Color Guide - Toshiba Technical

TOSHIBA GA-1120
COLOR GUIDE
About the
Documentation
This manual is part of a set of TOSHIBA GA-1120 documentation that includes the
following manuals for users and system administrators:
• The Quick Start Guide summarizes the steps for configuring the GA-1120 and
printing. It also describes how to access the online documentation.
• The User Software Installation Guide describes how to install software from the
User Software CD to enable users to print to the GA-1120, and also describes
setting up printing connections to the GA-1120.
• The Configuration Guide explains basic configuration and administration of the
GA-1120 for the supported platforms and network environments. It also includes
guidelines for setting up UNIX, Windows NT 4.0/2000, and Novell NetWare
servers to provide printing services to users.
• The Printing Guide describes the printing features of the GA-1120 for users who
send jobs from their computers.
• The Color Guide provides information on managing the color output of the
GA-1120. It explains how to calibrate your copier and take advantage of the
ColorWise® color management system, as well as features in ColorWise Pro Tools™.
• The Fiery Color Reference addresses concepts and issues associated with managing
color output of the GA-1120 and outlines key workflow scenarios. In addition, it
offers information on printing color documents from popular Microsoft Windows
and Apple Mac OS applications.
• The Job Management Guide explains the functions of the job management utilities,
including Command WorkStation™ and DocBuilder Pro™, and how you can use
them to monitor and control jobs on the GA-1120. This manual is intended for an
operator or administrator, or a user with the necessary access privileges, who needs to
monitor and manage job flow, perform color calibration, and troubleshoot problems
that may arise.
• Release Notes provide last-minute product information and workarounds for some of
the problems you may encounter.
Copyright © 2002 Electronics For Imaging, Inc. All rights reserved.
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The software described in this publication is furnished under license and may only be used or copied in accordance with the terms of such license.
This product may be covered by one of more of the following U.S. Patents: 4,500,919, 4,837,722, 5,212,546, 5,343,311, 5,424,754, 5,467,446, 5,506,946,
5,517,334, 5,537,516, 5,543,940, 5,553,200, 5,615,314, 5,619,624, 5,625,712, 5,666,436, 5,760,913, 5,818,645, 5,835,788, 5,867,179, 5,959,867,
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6,201,614, 6,215,562, 6,219,659, 6,222,641, 6,224,048, 6,225,974, 6,226,419, 6,238,105, 6,239,895, 6,256,108, 6,269,190, 6,289,122, 6,292,270,
6,310,697, 6,327,047, 6,327,050, 6,327,052, RE36,947, D406,117, D416,550, D417,864, D419,185, D426,206, D439,851, D444,793
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Contents
About the Documentation
Introduction
About this manual
xi
Key features of ColorWise
xii
Chapter 1: GA-1120 Color Management
Managing color on the GA-1120
1-1
Rendering styles
1-6
RGB Source Profile
1-7
RGB Separation
1-8
CMYK Simulation Profile
1-9
CMYK Simulation Method
1-10
Output profile
1-11
Pure Black Text/Graphics
1-12
Black Overprint
1-13
Spot Color Matching
1-14
Toner Reduction
1-15
PostScript printer driver for Windows and Mac OS
1-15
Setting color management print options for Windows 9x/Me and Windows NT
1-16
Adobe PostScript printer driver for Mac OS
1-18
Chapter 2: Color Calibration
An overview of calibration
2-1
Understanding calibration
2-2
How calibration works
2-3
Scheduling calibration
2-4
Checking calibration status
2-5
viii
Contents
Using Calibrator
2-5
Starting Calibrator
2-6
Expert Mode
2-8
Restoring default calibration measurements
2-10
Calibrating the GA-1120 with the DTP32
2-10
Using the EFI Densitometer ED-100
2-12
Setting up the ED-100
2-12
Calibrating the GA-1120 with the ED-100
2-13
Using AutoCal and ColorCal
2-17
Calibrating with ColorWise Pro Tools and AutoCal or ColorCal
2-17
Calibrating from the Control Panel with AutoCal or ColorCal
2-20
Chapter 3: ColorWise Pro Tools
Profile Manager
3-1
Setting the default profiles
3-3
Downloading profiles
3-4
Editing profiles
3-6
Managing profiles
3-6
Defining profiles
3-7
Color Editor
3-10
Editing profiles
3-10
Undoing simulation edits
3-17
Adjusting gray balance
3-17
Checking edited profiles
3-21
Color Setup
3-22
Setting default ColorWise options
3-22
ix
Contents
Appendix A: Color Measurement Instruments
Using the X-Rite DTP32 densitometer
A-1
Setting up the DTP32
A-1
Calibrating the DTP32
A-4
Appendix B: Importing density measurements
Simple ASCII Import File Format (SAIFF)
B-1
Example of 1D Status T density for EFI 34 patch page
B-2
Example of 1D Status T density for EFI 21 patch page
B-2
Example of 1D Status T density for an arbitrary page
B-3
Index
xi
Introduction
About this manual
This manual explains how to manage color output on the TOSHIBA GA-1120™, and
provides information on calibration and color profiles.
This manual is part of a set of documentation that includes manuals for users and
system administrators. The other manuals should be available at your site—refer to
them for a complete description of your TOSHIBA GA-1120.
N OTE : The term “GA-1120” is used in this manual to refer to the TOSHIBA
GA-1120. “Aero” is used in illustrations throughout this manual to represent the
GA-1120.
About this manual
This manual is organized to supply you with key information about managing
the color output of your GA-1120.
• Chapter 1 describes the GA-1120 print options and how to get the best color
results.
• Chapter 2 covers various methods of calibrating the GA-1120.
• Chapter 3 takes you through the features of ColorWise Pro Tools. ColorWise Pro
Tools include Profile Manager, used to manage color profiles on the GA-1120, and
Color Editor, which allows you to customize simulation and output profiles.
• Appendix A provides information about color measurement instruments, available
as separately purchased options.
• Appendix B describes the Simple ASCII File Format (SAIFF), which can be used to
import toner density measurements from measurement devices.
• The Fiery Color Reference Glossary defines words in bold—for example, output
profile—that appear throughout this manual. Color terms and concepts such as
“color space,” “spot color,” “gamut,” and “source profile” are used throughout this
manual. If you are new to desktop color, or if any terms are unfamiliar, check the
Glossary.
xii
Introduction
Key features of ColorWise
ColorWise is the color management system (CMS) designed and built into the
GA-1120 and designed to provide both casual and expert users with the best color
output for a variety of purposes. The ColorWise default settings provide great out-ofbox color from many Windows and Mac OS applications. This allows casual users to
achieve good quality output without knowing about or changing any color settings
on the GA-1120.
For consistent color, calibrate the GA-1120 on a regular basis. ColorWise Pro Tools
include a simple-to-use calibrator, which allows you to calibrate using either the
scanning unit that is part of the copier or an optional spectrophotometer or
densitometer (see Chapter 2).
ColorWise features let you modify printing results. Depending on your particular
needs, you can:
• Set the behavior of CMYK printing to emulate DIC, Euroscale, and SWOP offset
press standards.
• Match PANTONE and other spot colors for the best match when printed using
four-color press conditions or when printed using presses with extra, custom plates.
• Select a color rendering dictionary (CRD), also called a rendering style, for RGB
printing. CRDs allow for rich, saturated printing of presentation graphics; smooth,
accurate printing of photographs; and relative or absolute colorimetric rendering for
specialized needs.
• Define the source of incoming RGB color data for better screen matching and
provide for better color conversion of RGB data with no source information.
• Define whether RGB data is converted into the full gamut of the copier or whether
it is first converted into the gamut of another device, such as a press standard. This
feature is very helpful for making one device behave like another. It is also useful for
evaluating the appearance of the RGB file under different printing conditions
without having to reprocess the RGB data each time.
xiii
Key features of ColorWise
ColorWise color management (ColorWise) offers an open color architecture, letting
users customize the GA-1120 to meet new printing needs as they arise. ColorWise
supports ICC profiles, which are industry standard color profiles that describe the
color behavior of a device. Downloading ICC profiles to the GA-1120 enables the
GA-1120 to simulate a custom press (or another copier), as well as accurately print
colors from a particular monitor or a scanner. In addition, you can create customized
ICC profiles for the copier.
ColorWise also lets you use any Status T densitometer by importing data in a standard
file format (see Appendix B). In this case, it is important to note that the quality of the
instrument used will determine the quality of the calibration.
1
1-1
Chapter 1:
GA-1120 Color
Management
Managing color on the GA-1120
The first part of this chapter describes the options available from the ColorWise
color management system and explains how to customize the color settings for your
particular needs. It provides descriptions of the preset ColorWise default settings and
covers additional options for users who need to customize ColorWise.
Beginning on page 1-15 is a detailed explanation of what a PostScript Level 2 or 3
printer driver does, as well as information on the capabilities of various printer drivers
and instructions for setting color options with the PostScript drivers for Windows and
Mac OS computers.
Managing color on the GA-1120
To modify GA-1120 printing behavior, do any of the following:
• Select ColorWise options for an individual print job using menus that appear in the
printer driver.
• Select most ColorWise options as server defaults from the Color Setup application
in ColorWise Pro Tools (see page 3-22). Defaults can also be set from GA-1120
Setup or from the Control Panel, as described in the Configuration Guide. These
defaults will apply to all subsequent print jobs unless you override them.
• Select some ColorWise options, particularly default ICC profile settings and
calibration options, from ColorWise Pro Tools. These options include default
Simulation Profile (see page 1-9), Simulation Method (see page 1-10), Appear in
Driver as (see page 3-7), default Source Profile (see page 1-7), RGB Separation
(see page 1-8), and associated calibration set (see page 2-4).
Applications can generate color data for the GA-1120 in many different color spaces.
The most common type of color data produced from office applications is RGB,
while prepress applications generally produce CMYK data. Desktop applications can
also generate spot colors, such as PANTONE colors. To complicate matters, a single
page may contain a mix of RGB, CMYK, and spot colors. The GA-1120 lets users
control the printing of these mixed-color documents with features that apply
specifically to RGB, CMYK, or spot color data.
1
1-2
GA-1120 Color Management
GA-1120 color management generates CMYK data to be sent to the copier.
The following diagram illustrates the print options in the GA-1120 color management
process that affect color data conversions. You access these print options when you
send a print job to the GA-1120. Most of these options and settings are described in
subsequent sections of this chapter.
RGB data
RGB Source Profile
Gamma
Phosphors
White Point
Rendering Style (CRD)
Brightness
Pure Black Text/Graphics
RGB Separation
Output profile
CMYK data
CMYK Simulation Profile
CMYK Simulation Method
Brightness
Pure Black Text/Graphics
Output profile
Spot color data
GA-1120
color
processor
Color data sent
to copier
Spot Color Matching
RGB Source Profile is the only color option that applies strictly to RGB color data.
The other options that affect RGB color also affect the more rarely used Lab, XYZ,
and other calibrated color spaces.
1
1-3
Managing color on the GA-1120
N OTE : For users who are familiar with PostScript 3 color, RGB Source Profile affects
all CIEBasedABC color spaces (if the source space is RGB). If you send CMYK data
to the GA-1120 in CIEBasedDEFG format, for example, by choosing PostScript
Color Management in Adobe Photoshop, the GA-1120 Rendering Style selection—
which normally affects only RGB data—will also affect this CMYK data.
Settings for the following options can be specified via print options when you send
a job to the GA-1120. Some can also be set as defaults by the administrator during
GA-1120 Setup or using ColorWise Pro Tools. Settings specified via print options
override the defaults.
GA-1120 color print option
Color Mode
CMYK/Grayscale
or
What it does
Specifies the output color space of the job. Select CMYK, Standard Color, or
Expert Color for a full-color document.
Print Mode (Windows 98)
Standard Color/Expert Color/Grayscale
Rendering Style
Photographic/Presentation/Relative
Colorimetric/Absolute Colorimetric
(Default set at Setup)
Brightness
85% Lightest to 115% Darkest
RGB Source Profile
EFIRGB/sRGB
(PC)/Apple Standard/Other/
Source 1-10/None
(Default set at Setup or with ColorWise Pro
Tools)
(Other) Gamma
1.0/1.2/1.4/1.6/1.8/2.0/2.2/2.4/2.6/2.8/3.0
(Other) Phosphors
Hitachi EBU/Hitachi-Ikegami/NTSC/
Radius Pivot/SMPTE/Trinitron
Applies a GA-1120 color rendering dictionary (CRD) to RGB data (see
page 1-6), or to any incoming data with a PostScript source color space
definition, including CMYK.
Performs a color adjustment on all color channels to make the printed output
lighter or darker.
Applies an RGB source space definition to RGB data (see page 1-7). If you
choose the Other setting, you can specify particular settings for Gamma,
Phosphors, and White Point. See the corresponding options in this table.
This option, along with Gamma, Phosphors, and White Point, only affects
DeviceRGB or calibrated RGB color spaces.
Applies the specified gamma value to the RGB source space definition (see
page 1-7). To use this print option, you must choose Other as the RGB Source
setting.
Applies the specified phosphor (monitor type) information to the RGB source
space definition (see page 1-7). To use this print option, you must choose
Other as the RGB Source setting.
1
1-4
GA-1120 Color Management
GA-1120 color print option
(Other) White Point
5000 K (D50)/5500 K/6500 K (D65)/
7500 K/9300 K
RGB Separation
Output/Simulation
CMYK Simulation Profile
SWOP-Coated/DIC/Euroscale/
Simulation 1-10/Match Copy/None/
(Default set at Setup or in ColorWise Pro
Tools)
CMYK Simulation Method
Quick/Full (Source GCR)/Full (Output
GCR)
(Default in Setup or ColorWise Pro Tools)
Output Profile
Output 1-10
(Default set at Setup or in ColorWise Pro
Tools)
Pure Black Text/Graphics
On/Off
(Default in Setup)
Black Overprint
On/Off (Default in Setup)
What it does
Applies the specified white point value to the RGB source color space
definition (see page 1-7). To use this print option, you must choose Other
as the RGB Source setting.
Determines which CMYK color space your original RGB data will be
separated into—CMYK for the copier (Output) or CMYK for a specified
simulation (Simulation) (see page 1-8). It is important to note that when RGB
Separation is set to Simulation, RGB colors are affected by CMYK Simulation
Profile and CMYK Simulation Method.
Adjusts CMYK color data to simulate an offset press standard or a custom
color gamut defined at your site. Choosing None bypasses simulation (see
page 1-9).
N OTE : Some of the Simulation settings have slightly different names depending
on the model of copier.
Quick simulation applies one-dimensional transfer curves that adjust output
density only. The Full simulations apply colorimetric transformations that
adjust hue as well as output density (see page 1-10).
The output profile is applied to all data in the print job (see page 1-11).
User-defined output profiles can be downloaded to the GA-1120 using
ColorWise Pro Tools (see Chapter 3).
The On setting optimizes the quality of black text and line art output.
(see page 1-12).
The On setting overprints black text and text/graphics placed on colored
backgrounds. Overprinting colored backgrounds eliminates white gaps and
reduces halo effects or misregistration of colors. The On setting automatically
activates the Pure Black Text/Graphics option (see page 1-12).
1
1-5
Managing color on the GA-1120
GA-1120 color print option
Specifies whether black overprinting should apply to text only or to both text
and graphics. For this option to take effect, the Black Overprint option must
be set to On (see page 1-13).
Black Overprint Style
Text/Text & Graphics
Spot Color Matching
On/Off
(Default in Setup or ColorWise Pro Tools)
Sharpness
+4 Sharpest/+3/+2/+1/0 Normal/-1/-2/-3/
-4 Softest/None
Black Detection
On/Off
Toner Reduction
On/Off
Halftone
Auto/Detail/Smooth
What it does
The On setting enables GA-1120-defined matching of spot colors to their best
CMYK equivalents. Off instructs the GA-1120 to match color output to a
CMYK combination specified by the source application for the document (see
page 1-14).
This option enhances the sharpness and reduces jagged edges. To increase the
sharpness for printing image data such as photographs, select one of the
positive number settings. To print text or bitmap graphics, select None.
If your job consists of black-only text pages combined with a significant
number of color pages, set this option to Off.
This option minimizes the amount of toner used on a printed job. For more
information, see page 1-15.
This option specifies how to simulate a halftone screen for your job. If you
choose Auto, the appropriate screen is automatically selected, depending on
the image data. If you choose Detail, all objects are printed with high
resolution and a less jagged halftone screen. If you choose Smooth, all objects
are printed using a smooth and stable halftone screen.
Detailed explanations of how these and other settings affect your print jobs are
provided in subsequent sections of this chapter.
1
1-6
GA-1120 Color Management
Rendering styles
The Rendering Style option specifies a CRD for color conversions. You can modify the
Rendering Style option to control the appearance of images, such as prints from office
applications or RGB photographs from Adobe Photoshop. The GA-1120 lets you
select from the four rendering styles currently found in industry standard ICC profiles.
GA-1120 rendering style
Best used for
Equivalent ICC
rendering style
Photographs, including scans
and images from stock
photography CDs.
Image, Contrast, and
Perceptual
Presentation—Creates
saturated colors but does not
match printed colors precisely
to displayed colors.
In-gamut colors such as flesh
tones are rendered well; similar
to the Photographic rendering
style.
Artwork and graphs in
presentations. In many cases,
it can be used for mixed pages
that contain both presentation
graphics and photographs.
Saturation, Graphics
Relative Colorimetric—Provides
white-point transformation
between the source and
destination white points. For
example, the bluish gray of a
monitor will map to neutral
gray. You may prefer this style
to avoid visible borders when
not printing full-bleed.
Advanced use when color
matching is important but
you prefer white colors in the
document to print as paper
white. It may also be used with
PostScript color management to
affect CMYK data for
simulation purposes.
Relative Colorimetric
Absolute Colorimetric—
Provides no white point
transformation between the
source and destination white
points. For example, the bluish
gray of a monitor will map to a
bluish gray.
Situations when exact colors are
needed and visible borders are
not distracting. It may also be
used with PostScript color
management to affect CMYK
data for simulation purposes.
Absolute Colorimetric
Photographic—Typically results
in less saturated output than
presentation rendering when
printing out-of-gamut colors. It
preserves tonal relationships in
images.
1
1-7
Managing color on the GA-1120
RGB Source Profile
The RGB source profile setting allows you to define the characteristics of the RGB
data in your document so that the appropriate color conversion can occur on the
GA-1120. Commonly used monitor color spaces are available from the driver and
from the ColorWise Pro Tools Profile Manager. In addition, for special needs you can
use ColorWise Pro Tools to download custom monitor or scanner profiles.
When you specify a setting other than None for the RGB Source Profile, the GA-1120
overrides source color space definitions or profiles that other color management
systems may have specified. For example, if you specified a ColorSync System Profile
on your Mac OS computer, the RGB Source Profile setting overrides it. In cases where
you do not want this setting to override another specified source color space, choose
the None setting.
When you specify a setting other than None for the RGB Source Profile—since the
color space definitions are overridden—the prints from the GA-1120 will be consistent
across platforms. The GA-1120 RGB Source Profile options are:
• EFIRGB specifies an EFI-defined color space recommended for users who have no
detailed information about their RGB data.
• sRGB (PC) specifies the industry standard definition for a generic Windows PC
monitor.
• Apple Standard specifies the definition of all standard Mac OS computer monitors.
• Other allows you to specify custom RGB source settings. If you choose Other as the
RGB Source setting, you can choose settings for the Gamma, Phosphors, and White
Point options.
• Sources 1-10 specify the definitions you download as RGB source profiles. For more
information about downloading RGB source profiles, see page 3-4.
If you are printing with the PostScript driver from a Windows computer and have
two-way communication enabled, the name of each downloaded profile is
represented in the RGB Source Profile setting menu. If you are printing with the
AdobePS driver from a Mac OS computer, downloaded profiles appear as Source-1
through Source-10. For more information on two-way communication, see the User
Software Installation Guide.
1
1-8
GA-1120 Color Management
• None instructs the GA-1120 to allow the RGB sources you defined elsewhere,
such as in the application, to be used. When you set RGB Source to None, the
appearance of colors will not be independent of the file type. For example, RGB EPS
files will look different from RGB TIFF files.
With RGB Source set to None, PostScript RGB data that contains a source color
space definition is converted using the CRD specified by the Rendering Style option
(see page 1-6). Non-PostScript RGB data and PostScript RGB data that does not
contain a source color space definition are converted using a general undercolor
removal (UCR) conversion method.
RGB Separation
The RGB Separation option determines how RGB colors (as well as Lab and XYZ
colors) are converted to CMYK. The name of this option is meant to be descriptive,
since the option defines the color spaces that will be used by the GA-1120 to “separate”
the RGB data into CMYK values.
The two choices available for this option determine whether RGB data is converted
into the full gamut of the copier (output) or is first converted into the gamut of
another digital printer or press standard (simulation). This feature is helpful for
making one device behave like another for RGB data. For example, if a high-quality
ICC profile is available for another print device, the copier can simulate the behavior
of that device.
RGB Separation is also useful for prepress applications. For example, it lets you
experiment with the appearance of an RGB scan under different press printing
conditions, without having to convert the RGB data to CMYK data for each
condition. When the desired printing condition is found, you can then convert the
file to CMYK, using the same CMYK simulation profile you used during the
experimentation.
N OTE : The RGB Separation print option should be used in conjunction with the
Output Profile or CMYK Simulation Profile print options.
1
1-9
Managing color on the GA-1120
• Output converts all RGB colors into the CMYK color space of your copier (when set
to the printer’s default), or a customized CMYK color space for your copier (when
set to Output 1-10).
• Simulation converts all RGB colors into the CMYK color space for a specified
simulation (make sure to select the desired simulation with the CMYK Simulation
Profile print option).
CMYK Simulation Profile
The CMYK Simulation Profile print option allows you to print press proofs or
simulations. This setting specifies the offset press standard or other color printing
device that you want to simulate. This option affects CMYK data only.
With the Windows 9x/Me or Windows NT printer driver, you can also view an
unlimited number of custom Full simulations created using ColorWise Pro Tools.
On Windows 2000/XP and Mac OS computers, you can view up to 10 Full
custom simulations. The number of custom simulations is limited by the disk space
on the GA-1120.
If you are printing with the PostScript driver from a Windows computer and have
two-way communication enabled, the name of each downloaded or custom profile is
represented in the CMYK Simulation Profile setting menu. If you are printing with the
AdobePS driver from a Mac OS computer, downloaded or custom profiles appear as
Simulation-1 through Simulation-10. For more information on two-way
communication, see the User Software Installation Guide.
The None setting sends your original CMYK data to the copier in its calibrated
state, without conversions to simulate another printer. This setting is not generally
recommended, unless you want to bypass the conversion by ColorWise and use
another color management system.
1
1-10
GA-1120 Color Management
The CMYK Simulation Profile setting you specify depends on the press standard for
which the CMYK data was separated.
• For images that were separated using a custom separation (such as a separation
produced with an ICC profile), choose the corresponding profile on the GA-1120
with the CMYK Simulation Profile setting.
• For images that were separated for SWOP, choose SWOP as the CMYK Simulation
Profile setting.
N OTE : To properly simulate a printed image that was separated through the use of
an ICC profile, the same profile must be present on the GA-1120. For more
information about downloading ICC profiles to the GA-1120, see “Downloading
profiles” on page 3-4.
The ColorWise Off settings send unconverted CMYK data directly to one of the two
uncalibrated modes available on the copier. ColorWise Off-Gamma produces a density
curve similar to that of an offset printer. ColorWise Off-Linear yields a straight line
density curve. The ColorWise Off settings are designed for specific applications only.
For example, Calibrator (one of the ColorWise Pro Tools) prints its patch pages using
the Gamma mode. Avoid using uncalibrated modes for generic printing because other
color settings and printing overrides may be incompatible.
CMYK Simulation Method
The CMYK Simulation Method lets you define your preferred CMYK-to-CMYK
conversion technique.
• Quick applies one-dimensional transfer curves to adjust output densities in the cyan,
magenta, yellow, and black channels. This technique leads to pleasant color output
from your copier because pure primary colors are not “contaminated” by other
colorants. While it is the fastest simulation method and perfect for drafts, avoid
using it for final documents that will be used as press proofs. Other techniques offer
more color simulation accuracy, which is expected by proofing applications.
• Full (Source GCR) provides a complete and accurate simulation based on colorimetric
transformations. Hues are preserved, even for primary colors. The Gray
Component Replacement (GCR) level that was specified in the original (source)
document is also preserved. Full (Source GCR) is therefore an excellent simulation
technique for the highest quality press proofing applications.
1
1-11
Managing color on the GA-1120
• Full (Output GCR) is also a complete and accurate simulation method based on
colorimetric transformations. Hues are preserved, even for primary colors. With this
method, the Gray Component Replacement (GCR) level that was specified in the
original document is not preserved. Instead, all CMYK data is reseparated using the
GCR level specified by the Output Profile. This simulation technique is similar to
traditional ICC color matching methods and is appropriate for most documents
designed for the press, but reproduced on your copier.
Output profile
The output profile is applied to all data in the print job, so make sure the selected
profile is the right one for your job. The default output profile consists of both a profile
for your copier, describing its color characteristics, and a calibration target that
describes the expected behavior of the copier.
In certain cases, you may want to customize the default output profile using the
ColorWise Pro Tools Color Editor to achieve particular color effects (see page 3-10).
If you do so, the new customized output profile is applied to all data in the print job.
Changing the output profile only does not affect its associated calibration target
(since the target is based on a copier model). You can edit D-Max values of the
calibration target separately (see page 3-6).
You can use the ColorWise Pro Tools Profile Manager to download your own output
profile to the GA-1120 (see page 3-4). Downloaded output profiles are at first
associated with the calibration target that is tied to the default output profile.
As mentioned above, you can edit calibration target D-Max values separately.
If you are printing with the PostScript driver from a Windows computer and have
enabled two-way communication, the name of each downloaded or custom profile is
represented in the Output Profile setting menu. If you are printing with the AdobePS
driver from a Mac OS computer, downloaded or custom profiles appear as Output-1
through Output-10. For more information on two-way communication, see the User
Software Installation Guide.
1
1-12
GA-1120 Color Management
Pure Black Text/Graphics
The Pure Black Text/Graphics option affects the printout for black text and vector
graphics on a page. Under most circumstances, it is preferable to leave this option set
to On. When Pure Black Text/Graphics is on, black colors generated by applications
are printed using 100 percent black-only toner (for example, RGB = 0, 0, 0;
CMYK = 0%, 0%, 0%, 100%; or K = 100%). This means the black text and line art
will not exhibit halftone artifacts and will not be misregistered, since there is only one
toner used. In addition, this setting eliminates blasting. This option is automatically
set to On when the Black Overprint option is set to On.
For some jobs, it is preferable to clear this option, for example, if the page includes
gradient fills that use black. The following table describes the behavior of the Pure
Black Text/Graphics option with black data defined in different color spaces.
N OTE : The Pure Black Text/Graphics option can be used only when printing
composites, not when printing separations.
Input
black color
RGB
Pure Black Text/Graphics
On
Prints 100% black
Off
With the default profile, prints a rich black using
all toners.
CMYK
Prints only with black toner, because CMYK
simulations preserve the black channel. The actual
amount of toner used depends on the current
simulation and the calibration state of the copier.
Spot
Prints only with black toner, because spot color
simulations preserve the black channel. The actual
amount of toner used depends on the current
simulation and the calibration state of the copier.
1
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Managing color on the GA-1120
N OTE : PostScript applications, such as QuarkXPress, may convert elements defined as
RGB = 0, 0, 0 to four-color CMYK black before sending the job to the GA-1120.
These elements are not affected by the Pure Black Text/Graphics option. For details,
see the application notes. Also, black text and line art defined as RGB = 0, 0, 0 in
office applications (such as Microsoft Word) are converted to single-color black
(CMYK = 0%, 0%, 0%, 100%) by the Microsoft PostScript Level 3 driver for
Windows 2000/XP. To print this single-color black at the maximum toner density
of the copier, set the Pure Black Text/Graphics option to On.
Black Overprint
The Black Overprint option lets you specify whether black text—defined as
RGB = 0, 0, 0, or as CMYK = 0%, 0%, 0%, 100%—overprints colored backgrounds.
• On—Black text overprints colored backgrounds, eliminating white gaps and
reducing halo effects or misregistration of colors. Setting Black Overprint to On
automatically activates the Pure Black Text/Graphics option.
• Off—Black text knocks out colored backgrounds.
N OTE : PostScript applications may perform their own black overprint conversions
before sending the print job to the GA-1120.
One example of how you might use this setting is with a page that contains black text
on a light blue background. The background blue color is CMYK = 40%, 30%, 0%,
0% and the black text is CMYK = 0%, 0%, 0%, 100%.
• With Black Overprint On, the final text portions of the page are overprinted, or
combined with the underlying colors. This results in CMYK = 40%, 30%, 0%,
100% for the color used for the text. There is no transition in the cyan and magenta
toners, and the quality of the output is improved since it will not show artifacts near
the edges of the text. The option also works with text defined in the RGB color
space, that is RGB = 0, 0, 0.
• With Black Overprint Off, the border of the text is on an edge that has cyan and
magenta toners on one side (outside the text) and black toner on the other side
(inside the text). This transition may cause visible artifacts because of the practical
limitations of the copier.
N OTE : With the Black Overprint Style option, you can specify whether to overprint
only black text or both black text and graphics (see page 1-5).
1
1-14
GA-1120 Color Management
Spot Color Matching
The Spot Color Matching option provides automatic matching of spot colors with
their best CMYK equivalents.
• On—The GA-1120 uses a built-in table to generate the closest CMYK matches of
spot colors your copier can produce. (New tables are generated when you add new
output profiles.)
N OTE : Spot colors not included in the built-in table are treated as CMYK.
• Off—The GA-1120 uses CMYK equivalents defined by the spot color manufacturer,
such as PANTONE. These are the same CMYK equivalents used by applications
that include spot color libraries.
For jobs that include spot colors, set Spot Color Matching to On unless you are
printing press simulations. In that case, set Spot Color Matching to Off and choose the
appropriate CMYK Simulation setting (see page 1-9).
For PDF jobs that include spot colors and if spot colors are not included in the built-in
table, setting Spot Color Matching to On retains the spot color originally specified.
The GA-1120 makes reference to the built-in table to generate the closest CMYK
matches of the original spot color.
N OTE : You can use the Spot Color Matching option only when printing composites,
not when printing separations.
Spot Color Matching and the PANTONE Coated Color Reference
The PANTONE Coated Color Reference (described in the Fiery Color Reference)
prints differently depending on the Spot Color Matching setting.
• On—The GA-1120 uses a built-in table to generate the best matches of the
PANTONE colors that your copier can produce. The PANTONE number is
printed below each swatch.
• Off—The GA-1120 prints swatches using the CMYK values recommended by
Pantone, Inc. (and used by applications that provide PANTONE color libraries).
The CMYK values used to generate the color, as well as the PANTONE number of
the color, are printed below each swatch. These CMYK values are printed through
the selected CMYK Simulation and Output Profile settings.
1
1-15
PostScript printer driver for Windows and Mac OS
Toner Reduction
This option minimizes the total amount of toner and reduces effects of toner blasting,
offset, or flaking. With the On setting, the maximum combined amount of toner is
240%. The Off setting provides maximum toner coverage to 280% for Plain Paper and
Thin Paper, and 260% for Thick Paper. However, with the On setting, shadow density
in a print job may be lighter than that of a job printed with the Off setting.
PostScript printer driver for Windows and Mac OS
You can access the printer driver options described in this section by choosing
Start\Settings\Printers, right-clicking the appropriate PPD name, and choosing
Properties (Windows 9x/Me), Document Defaults (Windows NT), or Printing
Preferences (Windows 2000/XP). To access the Mac OS driver options, choose Print
from the File menu of your application. These settings are also accessible from the
Print Setup or Page Setup dialog boxes of most applications.
For Windows computers, the GA-1120 driver interface enables you to save
combinations of settings that you can later access. Additionally, you can choose
different settings for individual jobs from the applications you use.
The printer driver writes a PostScript file containing the instructions generated by your
application and the GA-1120 print options you chose. The printer driver sends the
PostScript file to the GA-1120. The GA-1120 then performs PostScript processing and
color conversions and sends raster color data to the print device.
N OTE : The following illustrations and instructions do not apply to all applications.
Many applications, such as Adobe PageMaker, Adobe Photoshop, Adobe Illustrator,
QuarkXPress, and CorelDRAW, have other color management options in addition to
those presented in the printer driver. For information on specific applications, see the
Fiery Color Reference.
1
1-16
GA-1120 Color Management
Setting color management print options for Windows 9x/Me and
Windows NT
This section explains how to set GA-1120 color print options with the Adobe
PostScript Printer Driver for Windows. This driver is a PostScript 3 printer driver that
takes full advantage of the color features of the GA-1120. Before you proceed, make
sure you have completed the following procedures:
• Install the Adobe PostScript Printer Driver and the GA-1120 PPD (see the User
Software Installation Guide).
• Set up the GA-1120 for printing (see the Configuration Guide).
• Install the ICC output profile for the GA-1120 on your Windows computer (see
page 3-4).
TO
Choose ColorWise
SET PRINT OPTIONS FOR
W INDOWS 9 X /M E /NT
1.
Access the printer driver options, as described on page 1-15.
2.
Click the Fiery Printing tab, and choose settings from the ColorWise menu for the
print options described on page 1-3.
1
1-17
3.
PostScript printer driver for Windows and Mac OS
Click Expert Settings.
Click Expert Settings to access
additional ColorWise options
The Expert Color Settings flowchart appears. This window displays additional color
settings for the GA-1120. Each option includes a menu from which you can select
settings for your specific job.
4.
Click Update to display the current GA-1120 settings.
If Update does not appear, make sure that two-way communication is set up as
described in the User Software Installation Guide.
5.
To specify custom RGB source settings, choose Other for the RGB Source Profile, and
then click Custom Setup.
The following dialog box allows you to specify custom RGB source settings
(see page 1-7).
For most users, the default settings provide the right level of color control. For more
information about individual print options, see page 1-3.
1
1-18
GA-1120 Color Management
Adobe PostScript printer driver for Mac OS
This section explains how to set color management print options with the AdobePS
printer driver for Mac OS, a PostScript 3 driver that takes full advantage of the color
features of the GA-1120 and lets you save a set of print option settings.
Before you continue, make sure you have completed the following procedures, as
described in the User Software Installation Guide:
• Install the AdobePS printer driver and the GA-1120 PPD.
• Select the GA-1120 in the Chooser and set it up with the GA-1120 PPD.
• Install the ICC output profile for the GA-1120 on your Mac OS computer (see
page 3-4).
N OTE : The following illustrations and instructions do not apply to all applications.
Many applications, such as PageMaker, Photoshop, Illustrator, QuarkXPress, and
CorelDRAW have other color management options in addition to those presented in
the printer driver. For information on specific applications, see the Fiery Color
Reference.
Setting color management print options
You can choose print options from the various panes of the AdobePS driver dialog box.
To access the initial AdobePS dialog box, choose Print from the File menu of your
application.
N OTE : The word “pane” is used to describe the different pages that appear in the driver
dialog box when you make selections from the menu at the upper left. Each pane
presents a particular set of print options.
The AdobePS driver includes the following Color Matching options.
• Color/Grayscale—When this setting is used to print to the GA-1120, ColorWise
provides all color conversions on the GA-1120. Typically, you should use this option
when printing to the GA-1120.
• PostScript Color Matching—Can be used with PostScript devices such as the
GA-1120. It provides for color conversion using a color rendering dictionary (CRD)
that is downloaded with the print job. This method requires that the file is saved as
an EPS with PostScript Color Management selected.
1
1-19
PostScript printer driver for Windows and Mac OS
N OTE : If you use the PostScript Color Matching option, the driver may, depending on
the application in use, attach a CMYK source definition to the CMYK data in your
document. In such a case, the CMYK data in the document is reseparated using a
GA-1120 CRD. The destination color space for the CRD is determined by the RGB
Separation print option. When RGB Separation is set to Simulation, CMYK data is
printed according to all specified CMYK Simulation Profile and CMYK Simulation
Method settings. When RGB Separation is set to Output, CMYK data is converted to
the selected output profile’s CMYK color space.
• ColorSync Color Matching—Provides for color conversion on the host computer.
This option can be used with PostScript devices such as the GA-1120, but it is
intended for use with PostScript Level 1 devices. If you use this option, be sure to
specify the GA-1120 ICC profile as the Printer Profile. ColorSync Color Matching
is not a suggested color matching method because it does not work in conjunction
with all applications and requires that you disable features of ColorWise on the
GA-1120.
TO
SET
GA-1120
1.
Choose Color Matching
from this menu
COLOR MANAGEMENT OPTIONS
In the AdobePS Print dialog box, choose Color Matching from the General menu.
1
1-20
2.
GA-1120 Color Management
Choose Color/Grayscale from the Print Color menu.
Choose Color/Grayscale
3.
In the Printer Specific Options menus, choose settings for the print options
described on page 1-3.
4.
If these settings are used regularly, click Save Settings to save them for
subsequent jobs.
2
2-1
Chapter 2:
Color Calibration
An overview of calibration
Calibrating the GA-1120 ensures consistent, reliable color output. You can calibrate
the GA-1120 using ColorWise Pro Tools in combination with any of the following
color measurement instruments, available as separately purchased options:
• X-Rite DTP32 automatic scanning densitometer
• EFI Densitometer ED-100 hand-held densitometer
By connecting the instrument to the serial port on your computer, you can quickly
measure calibration color patches and download measurements to the GA-1120.
For information on setting up and operating the DTP32, see Appendix A.
You can also obtain measurements from the copier’s built-in scanner and calibrate
using AutoCal™ or ColorCal™, which do not require the use of a measurement
instrument and can be run from ColorWise Pro Tools or the GA-1120 Control Panel.
This chapter explains how calibration works and provides instructions for all
calibration procedures.
For information on advanced calibration and simulation features available with
ColorWise Pro Tools, such as editing profiles and creating custom profiles, see
Chapter 3. A format for inputting color measurements from other densitometers
is described in Appendix B.
N OTE : The procedures described in this chapter are fundamentally the same for
Windows and Mac OS computers. The main differences are the interface cable and the
port used to connect to the measurement instrument. This chapter shows illustrations
for the Windows version.
N OTE : The term computer is used to refer to any computer running ColorWise Pro
Tools.
An overview of calibration
Calibration generates curves that adjust for the difference between the actual toner
densities (measurements) and the response expected by the output profile.
2
2-2
Color Calibration
• Measurements represent the actual color behavior of the copier.
• Calibration sets are sets of measurements.
• A calibration target that describes the expected behavior of the copier is contained
in each output profile.
Once you have calibrated the GA-1120, a calibration set is stored. This calibration set
will be used when it is associated with an output profile. Every output profile has an
associated calibration set. If you have not specified one, the calibration set associated
with the default output profile is used.
If you change the calibration after a saved job has been processed (RIPped), you do not
need to reprocess (reRIP) the job. The new calibration affects the job without needing
to be reprocessed.
N OTE : Changing calibration has the potential to affect all jobs for all users, so you
may want to limit the number of people authorized to perform calibration. You can set
an Administrator password in GA-1120 Setup to control access to calibration (see the
Configuration Guide).
Understanding calibration
Although most users’ needs are met by the default calibration set, the GA-1120 allows
you to choose a calibration set to customize calibration for specialized jobs.
Calibration allows you to:
• Maximize the color reproduction capabilities of the GA-1120.
• Ensure consistent color quality over time.
• Produce consistent output across GA-1120 servers.
• Achieve better color matches when reproducing spot colors such as PANTONE
colors or other named color systems.
• Optimize the GA-1120 for using ColorWise rendering styles (CRDs) and CMYK
simulations, and for using ICC profiles.
2
2-3
Understanding calibration
How calibration works
Success in obtaining satisfactory print quality from the GA-1120 depends on many
factors. Among the most important are establishing and maintaining optimal toner
densities. The density is the measure of the light absorbed by a surface. By carefully
regulating toner densities, you can obtain consistent printed color.
Even with a calibrated system, toner density is affected by service settings, humidity,
and temperature; density also tends to drift over time. Regular measurement detects
day-to-day variations in densities, and calibration corrects for them.
Calibration works by creating calibration curves on the GA-1120 that compensate for
the difference between actual (measured) and desired (target) density values. These
calibration curves are the graphic equivalent of transfer functions, which are
mathematical descriptions of changes that will be made to the data you start with.
Transfer functions are often graphed as input or output curves.
The GA-1120 generates calibration curves after comparing measured values to the
final target values for each of the four toner colors. The target values are based on the
output profile specified.
Measurements
Measurement files contain numerical values that correspond to the toner density
produced by the copier when it prints solid cyan, magenta, yellow, and black, and
graduated tints of those colors.
To create a measurement file, first print a page of color patches. Then measure the
patches using either a color measurement instrument connected to a computer on the
network or, if it is available, the print device’s scanner. The new measurements are
automatically downloaded to the GA-1120.
2
2-4
Color Calibration
Output profiles and calibration sets
Output profiles and calibration sets define desired calibration results. One or more
output profiles and one or more calibration sets are provided with the GA-1120. When
you calibrate the GA-1120, you can select the calibration set that corresponds to the
typical printing jobs at your site. This same calibration set can be associated with one
or more output profiles. (For more information on output profiles, see page 1-11.)
Scheduling calibration
In general, you should calibrate the GA-1120 at least once a day, depending on the
volume of print jobs. If it is very important to maintain consistent color, or if the
copier is subject to wide fluctuations in temperature or humidity, calibrate every few
hours. For the best performance, calibrate whenever there is a noticeable change in
print quality.
If you need to split a print job into two or more batches to be printed at different
times, it is especially important to calibrate before printing each batch. You should
also calibrate the GA-1120 after copier maintenance. However, because the copier may
be less stable immediately after maintenance, wait until you have printed
approximately 50 pages before you calibrate.
N OTE : Since printed output from the copier is very sensitive to changes in temperature
and humidity, the copier should not be installed near a window or in direct sunlight, or
near a heater or air conditioner. Paper is sensitive to climate changes, as well. It should
be stored in a cool, dry, stable environment, and reams should remain sealed until they
are needed.
Print color reference pages. You can print Color Charts from the Control Panel (see the
Configuration Guide) or Command WorkStation (see the Job Management Guide), and
the color reference pages included with the user software (see the User Software
Installation Guide ). All of these pages include fully saturated color patches and pale
tints of cyan, magenta, yellow, and black. Images with skin tones offer a very good
basis for comparison. You can save and compare pages you printed at different times.
If there is a noticeable change in appearance, calibrate the GA-1120.
2
2-5
Using Calibrator
When you examine the Test Page, keep in mind that all color patches should be visible,
even though they may be very faint in the five percent and two percent range. Each
color’s patch set should show uniform gradation from patch to patch as the color
lightens from 100 percent to zero percent.
If the solid density patches (100% cyan, magenta, yellow, or black) look less saturated
with time, show the pages to your copier service technician to find out whether
adjusting the copier can improve output.
Checking calibration status
You can check whether the GA-1120 is calibrated, which calibration set and output
profile were used, and when the copier was last calibrated:
• Print a Configuration page or Test Page from the Control Panel or
Command WorkStation.
• Select a calibration set in Calibrator—the last calibration and the user who
performed it are displayed.
Using Calibrator
ColorWise Pro Tools Calibrator lets you calibrate the GA-1120 using the measurement
method of your choice.
Changing the calibration has the potential to affect all jobs for all users, so you may
want to limit the number of people authorized to perform calibration. You can set an
Administrator password to control access to calibration (see the Configuration Guide).
N OTE : Multiple users can be connected to one GA-1120 with ColorWise Pro Tools,
but only one user at a time can use Calibrator. An error message appears if you try to
calibrate when another user is already using ColorWise Pro Tools to calibrate.
2
2-6
Color Calibration
Starting Calibrator
You start Calibrator from the ColorWise Pro Tools main window.
T O C ALIBRATE
1.
THE
GA-1120
USING
C ALIBRATOR
Start ColorWise Pro Tools and connect to the GA-1120.
For instructions on configuring the connection to the GA-1120, see the User Software
Installation Guide.
N OTE : If the connection to the GA-1120 from Command WorkStation (which also
allows for access to ColorWise Pro Tools) is not established, you can start
ColorWise Pro Tools independently of Command WorkStation.
2.
Click Calibrator.
2
2-7
Using Calibrator
The Calibrator window appears.
Calibration methods
appear here
You can use the Calibrator window to perform the calibration method of your choice.
Procedures for each calibration method are described later in this chapter.
2
2-8
Color Calibration
Expert Mode
You can set Calibrator to either Standard or Expert Mode. You can perform all essential
calibration tasks while in Standard Mode. Expert Mode offers two additional options:
Print Pages and View Measurements.
Calibration methods
appear here
With the Print Pages option, you can print a calibration Comparison Page showing the
results of the new measurements with any profile associated with the currently selected
calibration set. You can also create a custom comparison page and save it as a
PostScript or Encapsulated PostScript (EPS) file called CALIB.PS. You can then print
the file to the Hold Queue of the GA-1120 from your application or download it to
the Hold Queue with Fiery Downloader. An additional way to create the CALIB.PS
file is to rename any job in the Hold Queue using Command WorkStation (see the Job
Management Guide).
2
2-9
Using Calibrator
With the View Measurements option, you can view the current set of measurements as
a table or as a graph that shows both the measurements and the target curves.
Output profile name
appears here
When more than one profile uses the same target, an additional menu called Plot
Against appears in the upper-right corner of the dialog box. It lists all output profiles
that use that same calibration set. Selecting an output profile from this menu displays
the target curves associated with that profile. If each output profile contains a unique
calibration target, when you switch profiles, the curves displayed also change.
2
2-10
Color Calibration
Restoring default calibration measurements
Use the following procedure to return to default preset calibration measurements.
TO
RESTORE DEFAULT CALIBRATION MEASUREMENTS
1.
In the main Calibrator window, click Restore Device.
2.
Click OK to restore the preset default calibration set.
N OTE : Restore Device applies only to the currently selected calibration set.
Calibrating the GA-1120 with the DTP32
Using the DTP32, you can quickly measure color patches and download these
measurements to the GA-1120 using ColorWise Pro Tools Calibrator.
TO
CALIBRATE THE
1.
GA-1120
USING THE
DTP32
Start Calibrator.
For instructions on starting Calibrator, see page 2-6.
2.
In the Select Measurement Method pane, choose X-Rite DTP32.
3.
In the Check Print Settings pane, choose the desired calibration set.
If more than one option appears, choose the appropriate calibration set for the type of
media you will use most often.
N OTE : For this calibration to take effect, the calibration set must be associated with one
or more output profiles. The default calibration set is already associated with the
default output profile, so there is no need to make any new associations.
4.
In the Generate Measurement Page pane, click Print.
The Print Options dialog box appears.
2
2-11
5.
Using Calibrator
Choose the appropriate options, and click Print.
For Page Type, choose either 34 or 21 Sorted Patches.
In the Paper Size menu, the menu will automatically choose LTR/A4 for 21 Sorted
Patches or 11x17/A3 for 34 Sorted Patches.
For Input Tray, choose the paper source.
6.
Retrieve the measurement page from the copier.
7.
Click Measure in the Get Measurements pane.
The Measurement Options dialog box appears, displaying the specified Page Type and
Paper Size options.
8.
Click Measure.
In the dialog box that appears, follow the directions for feeding the measurement
page through the X-Rite DTP32.
2
2-12
Color Calibration
The Status field displays instructions for selecting the port and feeding the
measurement page through the DTP32 four times, once for each color strip.
9.
When the Status field indicates that the measurements were read successfully,
click Accept.
10.
Click OK in the Measure dialog box.
11.
Click Apply in the Calibrator window to implement the new calibration set.
12.
Click OK in the Information dialog box.
This completes the calibration process.
Using the EFI Densitometer ED-100
The EFI Densitometer ED-100 is a hand-held instrument that measures the density
of printed ink and toner. Like the DTP32, the ED-100 is a reflection densitometer
that you can use to calibrate the GA-1120.
The ED-100 is available as a separately purchased option.
Setting up the ED-100
To use the ED-100 for calibration purposes, you must first set it up for use with your
computer. For complete instructions on setting up the ED-100, see the documentation
that is included with the instrument.
The following illustration shows the different components of the ED-100.
Indicator light
Sample aperture
(underneath)
Measure button
2
2-13
Using the EFI Densitometer ED-100
Calibrating the GA-1120 with the ED-100
You can use ColorWise Pro Tools in conjunction with the ED-100 to calibrate the
GA-1120.
TO
CALIBRATE THE
1.
GA-1120
USING THE
ED-100
Start Calibrator.
For instructions on starting Calibrator, see page 2-6.
2.
Choose EFI Densitometer ED-100 as the measurement method.
3.
In the Check Print Settings pane, choose the desired calibration set.
Choose the appropriate calibration set for the type of media you will use most often.
N OTE : For this calibration to take effect, the calibration set must be associated with one
or more output profiles. There is no need to make any new associations for the default
calibration set, since it is already associated with the default output profile.
4.
In the Generate Measurement Page pane, click Print.
5.
Choose the appropriate options, and then click Print.
In the Page Type menu, choose either 34 or 21 Sorted Patches, or 34 or 21
Randomized Patches. Sorted patches are printed on the page in order of their hue and
saturation levels. Randomized patches are printed on the page in random order, to help
compensate for density inconsistencies on different areas of the page.
2
2-14
Color Calibration
In the Paper Size menu, the menu will automatically select LTR/A4 for 21 Patches or
11x17/A3 for 34 Patches.
In the Input Tray menu, specify the paper source for printing the measurement page.
6.
Retrieve the measurement page from the copier.
7.
Click Measure in the Get Measurements pane.
8.
Choose the appropriate options, and then click Start.
The Page Type menu automatically chooses the measurement page type that you
printed in step 6.
Use the arrow buttons next to the Clicks Per Patch field to choose the number of
measurements you want to take for each patch on the page. When you choose multiple
clicks, the average value of all measurements taken for the patch is returned to the
GA-1120. Multiple measurements are more accurate, but may take more time.
Select the Audio Feedback option if you want to hear a confirmation tone each time a
measurement is recorded. A single tone indicates a successful measurement; two tones
indicate a measurement error. If you have specified multiple clicks per patch, the tone
sounds after you take the final measurement.
If necessary, choose the appropriate COM port for the ED-100 from the Port menu.
2
2-15
Using the EFI Densitometer ED-100
When you click Start, the Measurements window appears. Directions for measuring
the patches appear in the Status area.
9.
Place the ED-100 over the specified patch on the Measurement Page, making sure to
center the sample aperture over the patch. Press Measure to take the measurement.
N OTE : For a more accurate measurement, place several plain sheets of paper beneath
the Measurement Page to block underlying colors from being read by the instrument.
If you have specified multiple clicks per patch, continue pressing Measure to take the
required number of measurements. We recommend that you move the ED-100
slightly after each measurement while keeping it within the patch circle.
2
2-16
Color Calibration
When the patch has been measured successfully, a check mark appears in the patch
preview in the Measurements window. The window identifies and highlights the next
patch to be measured.
10.
Repeat step 9 to measure each successive patch on the Measurement Page.
To retake a measurement, first select the desired patch preview in the Measurements
window. Then measure the patch on the page using the ED-100.
N OTE : You must take the measurements in the order outlined in the Measurements
window and on the measurement page.
11.
When all the patches have been read successfully, click Accept.
12.
Click Apply in the Calibrator window to implement the new calibration set.
13.
Click OK in the Information dialog box.
This completes the GA-1120 calibration process.
2
2-17
Using AutoCal and ColorCal
Using AutoCal and ColorCal
AutoCal and ColorCal let you calibrate the GA-1120 without the use of an additional
spectrophotometer or densitometer. Instead, these methods use the copier’s built-in
scanner to measure toner density values.
You can perform AutoCal and ColorCal calibration from either ColorWise Pro Tools
or the GA-1120 Control Panel. For troubleshooting during the AutoCal procedure,
see the Job Management Guide.
N OTE : To calibrate using AutoCal or ColorCal, you will need the Kodak Gray Scale
strip included in the customer media pack that came with your GA-1120.
Calibrating with ColorWise Pro Tools and AutoCal or ColorCal
When you run ColorCal from ColorWise Pro Tools, you have the option to calibrate
the copier’s scanner before calibrating the GA-1120 itself. This option is not available
for AutoCal.
TO
CALIBRATE WITH
1.
C OLOR W ISE P RO T OOLS
AND
A UTO C AL
OR
C OLOR C AL
Start Calibrator.
For instructions on starting Calibrator, see page 2-6.
2.
In the Select Measurement Method pane, choose AutoCal or ColorCal.
3.
In the Check Print Settings pane, choose the desired calibration set.
If more than one option appears, choose the appropriate calibration set for the type of
media you will use most often.
N OTE : For this calibration to take effect, the calibration set must be associated with one
or more output profiles. The default calibration set is already associated with the
default output profile, so there is no need to make any new associations.
4.
Click Print in the Generate Measurement Page pane.
2
2-18
5.
Color Calibration
Choose the Input Tray to use for the measurement page and click Print.
AutoCal
ColorCal
The Page Type is automatically set to AutoCal Page or ColorCal Measurement Page.
The Paper Size is automatically set to LTR/A4.
6.
Retrieve the Measurement Page from the copier.
7.
Click Measure in the Get Measurements pane.
If you chose the AutoCal method, skip to step 11.
If you chose the ColorCal method, an alert message appears, asking if you want to
calibrate the copier’s scanner.
8.
If you are using ColorCal and want to calibrate the scanner, click Yes in the
alert message.
9.
Choose the Input Tray to use for the scanner measurement page, and click Print.
Retrieve the scanner measurement page from the copier.
2
2-19
10.
Using AutoCal and ColorCal
Place the Gray Scale strip, Color Scale strip, and scanner measurement page in the
correct positions on the copier glass for scanner calibration.
Place the Gray Scale face down on the copier glass so that it will be centered along the
top edge of the scanner measurement page. Then place the Color Scale strip face down
on the copier glass so it is centered below the Gray Scale strip, keeping a distance of
0.25 inch to 0.5 inch between the two strips. Finally, place the scanner measurement
page face down over the strips.
To perform the scanner calibration, click Continue in the dialog box that appears.
After the scanner has been calibrated, another dialog box appears, prompting you to
calibrate the GA-1120.
11.
Follow the directions in the dialog box for placing the Gray Scale strip and the AutoCal
or ColorCal measurement page on the copier glass. Click Continue.
AutoCal
ColorCal
12.
Click Apply in the main Calibrator window to implement the new calibration set.
13.
Click OK in the Information dialog box.
This completes the calibration process.
2
2-20
Color Calibration
Calibrating from the Control Panel with AutoCal or ColorCal
If an Administrator password has been set, you will need it to perform calibration
from the Control Panel. For instructions on using the GA-1120 Control Panel, see the
Configuration Guide.
It is also possible to remove calibration measurements from the GA-1120. In general, it
is not necessary, because any new calibration replaces the existing one if the same
calibration set is selected.
TO
USE
A UTO C AL
OR
C OLOR C AL
FROM THE
C ONTROL P ANEL
1.
At the Idle screen, press Menu to enter the Functions menu.
2.
Using the Up and Down arrow buttons and the Line Selection buttons, choose
Calibration, and then choose Set Up Calibration.
If a password is set on the GA-1120, enter it and press OK.
3.
For Calibration Mode, choose Standard or Expert.
Expert Mode adds the option to print a Comparison Page (see page 2-8).
4.
For Tray, choose the paper source for the patch page and press OK.
Choose LTR/A4 from the GA-1120 Control Panel.
N OTE : If you print a measurement page from the Manual Feed tray, you must load the
appropriate paper in the tray and select the correct paper size from the copier touch
panel display.
5.
Choose Calibrate.
6.
Select the Calibration Set.
You can choose from the list of all calibration sets on the GA-1120. This screen appears
only if more than one calibration set is available.
7.
When prompted, choose Yes to print the measurement page.
This page is comprised of swatches of color that will be measured by the copier’s
scanner and then compared to the target color values. After the page is printed, the
Measure Page screen appears.
2
2-21
Using AutoCal and ColorCal
8.
Choose Yes in the Measure Page screen.
9.
When prompted on the Control Panel, place the Kodak Gray Scale strip face-down on
the copier glass.
Place the strip along the top edge of the copier so that it is centered between the paper
width marks on the copier.
Place grayscale strip face down
10.
Place color measurement page face
down over grayscale strip
Place the color measurement page face-down over the grayscale strip.
Make sure the patches on the grayscale strip do not overlap the color patches.
Close the platen glass cover, being careful not to move the grayscale strip and color
measurement page.
11.
On the Control Panel, choose OK.
Status messages display the progress of scanning and calculating measurements.
12.
When prompted to Print Comparison Page (Expert Mode only), choose Yes to print a
preview of the selected calibration.
Choose from a list of output profiles that use the same calibration set and press OK.
This option appears only in Expert Mode calibration.
13.
When prompted to apply or overwrite the calibration, choose Yes.
14.
Choose Yes to confirm.
Status messages display progress information. When calibration is complete, the
Control Panel display returns to the Functions menu.
2
2-22
TO
Color Calibration
REMOVE CALIBRATION FROM THE
CONTROL PANEL
1.
From the GA-1120 Control Panel, access the Calibration menu as described on
page 2-20.
2.
Choose Remove Calibration.
3.
When prompted, verify that you want to proceed with removing calibration.
The current measurements are removed and a default calibration is restored.
3
3-1
Chapter 3:
ColorWise
Pro Tools
Profile Manager
Designed to give you flexible control of color printing, ColorWise Pro Tools include
the following color management tools:
• Calibrator (see Chapter 2)
• Color Editor
• Profile Manager
• Color Setup
ColorWise Pro Tools for Windows and Mac OS computers are fundamentally the
same; differences are noted in this chapter. The windows and dialog boxes illustrated
are the Windows versions. For information on installing and configuring a connection
to ColorWise Pro Tools, see the User Software Installation Guide.
N OTE : If the connection to the GA-1120 from Command WorkStation (which also
allows for access to ColorWise Pro Tools) is not established, you can start
ColorWise Pro Tools independently of Command WorkStation.
Profile Manager
Profile Manager allows you to manage and edit ICC profiles. In the case of the
GA-1120, these profiles are divided into RGB Source, Simulation, and Output
profiles.
• RGB Source contains all monitor profiles resident on the GA-1120. RGB Source
profiles are used to define the source color space for RGB colors processed by the
GA-1120.
3
3-2
ColorWise Pro Tools
N OTE : If you use Photoshop 5.x or 6.x, you can upload the profile for your selected
working space to the GA-1120 and choose that as your RGB Source profile. For more
information, see the Fiery Color Reference.
• Simulation contains printer profiles used to simulate another device on the
GA-1120.
• Output contains copier profiles that describe the copier. For more information on
output profiles, see page 1-11.
N OTE : Changing the GA-1120 default profiles affects all jobs for all users. You may
want to limit the number of people authorized to use ColorWise Pro Tools by setting
an Administrator password.
The following profiles are provided with the GA-1120.
RGB Source:
• sRGB (PC)—source color space for a generic Windows computer monitor
• Apple Standard—standard source color space for Mac OS computer monitors with
older versions of ColorSync
• EFIRGB—preset default setting for a GA-1120
Simulation:
• SWOP-Coated—United States press standard
• Euroscale—European press standard
• DIC—Japanese press standard
In addition, one or more output profiles are provided with the GA-1120.
For more information on output profiles, see page 1-11.
3
3-3
Profile Manager
Setting the default profiles
The default profiles are applied to all print jobs sent to the GA-1120, unless you
override them using print options. Therefore, the defaults should be the most
commonly used profiles.
TO
SPECIFY A DEFAULT PROFILE
1.
Start ColorWise Pro Tools and click Profile Manager.
Output profiles
appear here
The left side of the main Profile Manager window lists the ICC profiles in the default
directory of your computer; the right side lists the three profiles on the GA-1120.
The Lock icon ( ) to the left of a profile name indicates that the profile cannot be
deleted and can be edited only if saved under a new name. Only Simulation and
Output profiles can be edited.
A small icon to the left of a profile name indicates the default profile for each category
(RGB Source, Simulation, and Output). If you designate a different profile as the
default, the icon appears next to your designated profile. The icon indicating the
default RGB Source and Output profiles looks like a target ( ). The icon indicating
the default Simulation profile changes in appearance depending on whether the default
RGB Separation setting is set to Simulation ( ) or Output ( ).
2.
Select the profile you want as the default for a profile type and click Profile Settings.
3.
In the Profile Settings dialog box, click Default and click Apply.
3
3-4
4.
ColorWise Pro Tools
Click OK.
In the main Profile Manager window, the target icon appears next to the new default
profile you specified.
5.
Repeat steps 2 through 4 for each type of profile.
If no default is set for RGB Source, the RGB Source print option is set to None. If no
default profile is set for Simulation, the CMYK Simulation print option is set to None.
For more information on print options, see Chapter 1.
The Output profile always has a default profile. You can change the Output default by
selecting a preset profile you want as the default and clicking Profile Settings. Or create
a new default under a new name by selecting a preset profile and specifying your choice
of the calibration set in the Use Calibration Set menu and a new name in the Profile
Description menu.
Downloading profiles
The GA-1120 comes with default profiles. You can download additional profiles from
any computer connected to the GA-1120.
TO
DOWNLOAD A PROFILE
1.
Start ColorWise Pro Tools and click the Profile Manager.
The left side of the main Profile Manager windows lists the ICC profiles in the default
directory of your workstation.
• Windows 9x/Me—Windows\System\Color
• Windows NT 4.0—Winnt\System32\Color
• Windows 2000—Winnt\System32\Spool\Drivers\Color
• Windows XP—Windows\System32\Spool\Drivers\Color
• Mac OS—System Folder:Preferences:ColorSync Profiles for ColorSync 2.0, and
System Folder:ColorSync Profiles for ColorSync 2.5 or later
2.
If the desired profile does not appear, click Browse to go to a different directory.
Browse to the directory containing the profile you want to download and click OK.
3
3-5
3.
Profile Manager
When the profile you want to download appears in the list in the main Profile Manager
window, select it.
If the profile is compatible with the GA-1120, a green arrow indicates that the profile
is available for downloading. Only output device profiles are downloadable to
Simulation and Output. Only input device profiles are downloadable to RGB Source.
N OTE : On Windows computers, the profiles must have an extension of .icc or .icm to
be listed. On Mac OS computers, the profiles must have a file type of “profile.”
All ICC profiles in the selected directory on your computer are displayed in the list in
the main Profile Manager window. However, because a profile is listed does not
necessarily mean it can be downloaded to the GA-1120.
Simulation profiles should be profiles only for those devices you want the GA-1120 to
match in terms of color output characteristics. Output profiles should be profiles only
for the copier to which you print. Although CMYK printer profiles can be downloaded
as Simulation or Output, consider how they will be used. If you want the GA-1120
prints to look like another printer, download that profile as a Simulation. If you have a
custom profile of the copier you print to, download that profile as an Output profile.
4.
Click the arrow to download the profile and click OK when the download is complete.
The new profile now appears in the list of profiles on the right side of the Profile
Manager main window.
For Windows 2000/XP and Mac OS computers, this profile must be associated with
one of the predefined names (Source-1 through Source-10 for RGB Source,
Simulation-1 through Simulation-10 for Simulation, or Output-1 through Output-10
for Output) or set as the default before it can be used. For Windows 9x/Me/NT, all
profiles can appear in the printer driver by their profile descriptions (see “Defining
profiles” on page 3-7).
N OTE : When an output profile is downloaded, it inherits the calibration target of the
current default output profile.
3
3-6
ColorWise Pro Tools
Editing profiles
The profiles on the GA-1120 can be customized to meet your specific needs and the
characteristics of your copier using Color Editor, either directly or through Profile
Manager. For more information on editing profiles, see “Color Editor” on page 3-10.
Managing profiles
Profile Manager lets you back up profiles to ensure that no custom profiles are lost
when the GA-1120 software is updated. You can also upload a copy of a built-in
GA-1120 profile to your workstation in order to use it with an ICC-aware application,
such as Photoshop. Profile Manager also lets you delete unwanted profiles.
N OTE : You can back up and delete only those profiles that appear in the main Profile
Manager window without a Lock icon next to them. Locked profiles cannot be deleted,
but most can be backed up.
TO
BACK UP PROFILES
1.
Start ColorWise Pro Tools and click Profile Manager.
2.
Select the profile on the GA-1120 to upload.
The arrow in the middle of the Profile Manager window turns green and points to the
left, indicating the profile is available for upload.
3.
Click the green arrow, choose a name and location for the profile, and click Save.
The name will be the file name of the profile, but the profile description will be the
original description, or the one you entered in the Profile Settings dialog box.
N OTE : When saving the profile on a Windows computer, be sure to include the
extension .icm. If the extension is not included, additional dialog boxes appear.
4.
Click OK when you are notified that the profile was successfully uploaded.
Delete profiles to make sure no one uses the wrong profile and to free up disk space on
the GA-1120 (although profiles are small and do not take up much space).
3
3-7
TO
Profile Manager
DELETE PROFILES FROM THE
GA-1120
HARD DISK
1.
Start ColorWise Pro Tools and click Profile Manager.
2.
Select the profile you want to delete and click Delete.
A Warning dialog box asks you to confirm the deletion.
N OTE : You cannot delete preset profiles, profiles that are currently set as default, or
profiles that are linked to any of the predefined custom names, for example
Simulation-1.
3.
Click Yes to delete the profile.
4.
To delete a profile currently set as the default or associated with a custom name,
click Profile Settings and clear the default option.
Defining profiles
For Windows 2000/XP and Mac OS computers, before you can apply any
downloaded or edited profile to a print job, that profile must be linked to one of the
predefined custom names, or you can set the profile as the default for all print jobs (see
setting default profiles, page 3-3). Ten names are available for custom profiles—
Source-1 through 10 for RGB Source, Simulation-1 through Simulation-10 for
Simulation, or Output-1 through Output-10 for Output. For Windows 9x/Me/NT,
all profiles appear by their actual names in the printer driver. These fixed names are
used in the printer driver so that you can select profiles per job even if your driver does
not have the capability to obtain an updated list from the GA-1120.
N OTE : A custom simulation profile is used to illustrate this procedure. The same steps
apply for defining custom or downloaded output profiles.
3
3-8
TO
ColorWise Pro Tools
DEFINE A PROFILE
1.
Start ColorWise Pro Tools and click Profile Manager.
Custom profile
created with
Color Editor
For the purposes of this example, assume DIC-new is a custom simulation profile
created with Color Editor and, as such, no information is displayed for DIC-new
under the heading “Appear in Driver as.”
2.
Select DIC-new in the Simulation list, and click Profile Settings or double-click
DIC-new.
3.
Select the “Appear in Driver as” option, choose one of the predefined custom
simulation names (Simulation-1 through Simulation-10) from the menu, and then
click Apply.
N OTE : Choose a name that is not already linked with another simulation. If you try to
define two profiles with the same name, you will get an error message.
For an output profile, the predefined custom names would be Output-1 through
Output-10.
3
3-9
Profile Manager
N OTE : While you cannot delete a preset profile, you can use the name of a preset
profile name for your edited profile when you select the “Appear in Driver as” option.
This replaces the preset profile with your own profile.
When you choose Profile Settings for an output profile, the Use Calibration Set
options also appear. You must calibrate the GA-1120 with this calibration set before
this option has any effect. If you have never measured for this calibration set, default
measurements will be used. For more information about calibration sets, see page 2-2.
In Profile Settings, you can also change profile descriptions for all non-locked profiles.
4.
Click OK.
DIC-new will appear
in driver as
Simulation-1
3
3-10
ColorWise Pro Tools
Simulation-1 now appears under the “Appear in Driver as” column for DIC-new.
Choosing Simulation-1 from the CMYK Simulation option of the printer driver
applies the DIC-new simulation to the print job.
If you do not define a custom simulation profile, your job will print with CMYK
Simulation Profile set to None. If you do not define a custom RGB Source or Output
profile, the default profile is used.
Color Editor
Color Editor allows you to customize simulation and output profiles. You can access
Color Editor directly by clicking its icon in the ColorWise Pro Tools main window, or
indirectly, through the Profile Manager.
Editing profiles
Color Editor allows you to create custom profiles by editing existing simulation or
output profiles and saving the changes as a new profile. With Color Editor, you can
fine-tune a profile on your GA-1120 to meet your exact specifications.
N OTE : You cannot edit source profiles; only simulation and output profiles can be
customized.
Color Editor has two Edit Modes for editing output profiles.
• Custom—Edit output profiles and save customized versions of them.
• % Density—View the calibration target, which is one component of the output
profile. You cannot make changes to the calibration target in this window, but you
can import a new target (see page 2-2).
Color Editor also has several Edit Modes for editing simulations.
• Master—Create a custom master simulation that affects all print jobs to which it is
applied, unless a linked simulation exists for the selected combination of simulation
profile, simulation method, and output profile.
• Quick, Full (Source GCR), or Full (Output GCR)—Create custom linked simulations.
Linked simulations affect the print job only if the corresponding simulation profile,
simulation method, and output profile are selected. If you choose an output profile
and simulation method for which you have created a custom linked simulation, that
3
3-11
Color Editor
simulation is applied automatically to the job. If you choose a simulation method or
output profile for which there is no custom linked simulation, the master simulation
is automatically applied. For detailed information about simulation methods, see
page 1-10.
N OTE : If you made edits to a master simulation after you created a linked simulation,
the edits are not applied to the linked simulation.
TO
EDIT A SIMULATION PROFILE IN
OUTPUT PROFILE IN C USTOM M ODE
M ASTER M ODE
OR AN
1.
Start ColorWise Pro Tools and click Color Editor.
2.
Choose Simulation or Output from the View menu.
Simulation lists the simulation profiles resident on the GA-1120, and Output lists the
output profiles resident on the GA-1120.
3.
Choose a profile to edit and click Select.
You can also open the Profile Manager, select a profile, and then click Edit.
3
3-12
4.
ColorWise Pro Tools
For a simulation profile, choose Master from the Edit Mode menu. For an output
profile, choose Custom from the Edit Mode menu.
For instructions for using Quick, Full (Source GCR), or Full (Output GCR) mode, see
page 3-16.
You can use this dialog box to view or edit profiles. The graph allows you to view and
manipulate color output values.
N OTE : When editing an output profile in Custom mode, clicking Import at the bottom
of the Color Editor window lets you import a calibration target file (.trg) created on
another GA-1120 using the previous version of ColorWise. The current version of
ColorWise does not allow you to save a target separately; rather, it saves the target in
conjunction with an output profile.
3
3-13
5.
Color Editor
Select the colors you want to edit by turning colors off and on.
The Eye icon to the left of each color indicates whether that color is visible on the
graph and will be affected by changes to the curves, brightness, and dot gain controls.
You can view and edit all four colors (cyan, magenta, yellow, and black) at once, or any
combination thereof. Working with only one or two colors at a time helps you finetune your adjustments. To turn off a color, click its Eye icon. In the following example,
cyan and magenta are visible and can be edited.
6.
To adjust the dot gain value for simulating press output, click Dot Gain.
You can choose either the North American or European standard. Use the sliders to
adjust to the desired Dot Gain:
• The range of values for North American at 50% input are from 0% to 50% gain
on output.
• The range of values for European at 40% input are from 0% to 59% gain on output;
the range of values for European at 80% input are from 0% to 20% gain on output.
3
3-14
ColorWise Pro Tools
If you use Dot Gain values, apply the settings first, so that the curves are deflected from
their straight-line positions. Then make edits to the new curves. When you adjust Dot
Gain values, all existing points on the curve are removed. A warning dialog box allows
you to cancel Dot Gain settings before they are applied.
7.
Use the plus and minus buttons to adjust brightness.
Changes to the brightness are reflected in the curve(s).
8.
To adjust the curves directly, click and drag points on the curve or enter numbers into
the input and output boxes.
The graph maps the input percentage to the output percentage. (These percentages
refer to the size of the CMYK halftone dots.) The curve you selected appears, and
points along the curve are marked so you can adjust them.
A curve with this shape
makes a color appear
lighter by reducing
density in the midtones.
A curve with this shape
makes a color appear
darker by adding density
in the midtones.
A curve with this shape
increases contrast.
N OTE : You should adjust points in this way only after you have entered the Dot Gain
and Brightness values.
3
3-15
Color Editor
For greater precision, you can type percentages in the Input and Output boxes or use
the arrow keys on the keyboard to adjust the curve. To use the arrow keys, you must
first click the curve to establish an anchor point that serves as a reference.
9.
For an output profile, you can set maximum densities of the C, M, Y, and K channels.
You can enter the maximum densities, called D-Max values, of individual colors for
profiles that support density settings. D-Max settings are not available when editing
Simulation profiles in Master mode.
10.
When you are finished, click Save and enter a name for the new profile.
The new custom profile is saved to the GA-1120 with the new name. If you edit one of
the press standard targets (for example, SWOP-Coated, DIC, or Euroscale), you may
want to include the original name as part of the new target name (for example, DICnew) to help you remember the source of the new target.
N OTE : Preset default profiles are locked and must be saved with a new name.
For Windows 2000/XP and Mac OS computers, custom profiles must be linked to one
of the 10 predefined custom profile names (Simulation-1 through Simulation-10 for
Simulation or Output-1 through Output-10 for Output) in order to be accessible from
the printer driver. You can create as many custom profiles as you want, but a maximum
of 10 are available from the printer driver at any one time. For information on linking
custom profiles to the predefined custom profile names, see “Defining profiles” on
page 3-7. If you are using the printer driver for Windows 9x/Me/NT, custom profiles
will appear in the driver window without being associated with a predefined profile
name.
If you set a custom profile as the default, you can access it from the printer driver
without linking it to one of the predefined custom names. Simply select “Printer’s
default” from the printer driver.
3
3-16
ColorWise Pro Tools
T O EDIT A SIMULATION IN Q UICK , F ULL (S OURCE GCR),
F ULL (O UTPUT GCR) MODE
OR
1.
Start ColorWise Pro Tools and click Color Editor.
2.
Choose Simulation from the View menu, select the simulation profile to edit, and then
click Select.
N OTE : You can also open the Profile Manager, select a simulation profile, and
click Edit.
3.
Choose Quick, Full (Source GCR), or Full (Output GCR) from the Edit Mode menu, and
choose an output profile with which your edited simulation will be linked from the
Link with menu.
The edited simulation will be linked with the output profile you choose from the
“Link with” menu.
N OTE : When editing a simulation profile in Quick mode, clicking Import at the
bottom of the Color Editor window lets you import a custom Quick Simulation
created on another GA-1120 using the previous version of ColorWise. The current
version of ColorWise does not allow you to save custom Quick or Full Simulations
independently; rather, they are saved as components of the same profile.
3
3-17
4.
Color Editor
Edit and save the simulation as described in steps 5 through 10 of the procedure
starting on page 3-13.
For this new simulation to be automatically applied to a print job, the CMYK
Simulation, Simulation Method, and Output Profile settings must be the same as those
used when you edited the profile. If the Simulation Method is different or a different
output profile is selected, the Master simulation is applied.
N OTE : A Simulation Profile can have a custom Master and one or more custom links—
up to three links (Quick mode and the two Full modes) for each output profile on the
system. (For the CMYK Simulation Profile option in the printer driver, note that if
you select a custom profile for which the output ink percentage is greater than 0 and
the input ink percentage is 0, the Use Master print option will have no effect.)
Undoing simulation edits
You can undo the changes you made to simulations (master and linked) in the
following ways:
• If you have not yet saved your edits, click Done on the Color Editor menu bar, and
do not save the changes.
• If you saved your edits under a new simulation name and want to delete all edits (in
Master, Quick, and Full modes) to the simulation, see page 3-7.
Adjusting gray balance
The AutoGray feature lets you use the copier’s built-in scanner as a measurement
device for adjusting the gray balance of output profiles. Gray balance refers to the
quality of neutral gray tones in a profile. In many cases, gray tones may contain a
bluish or reddish color cast. AutoGray helps shift these tones back toward
neutral grays. If you are satisfied with the gray balance of the copier, you do not need
to use AutoGray.
3
3-18
TO
ColorWise Pro Tools
CORRECT THE GRAY BALANCE OF AN OUTPUT PROFILE
1.
Start ColorWise Pro Tools and click Color Editor.
2.
Choose Output from the View menu.
3.
Select a profile to edit and click Select.
You can also open the Profile Manager, select a profile, and then click Edit.
4.
Choose Custom from the Edit Mode menu.
5.
Click AutoGray.
3
3-19
6.
Color Editor
If the output profile contains no edit points, continue to step 8.
If the output profile contains edit points from a previous AutoGray session, choose an
action from the following warning.
“Refine” reuses edits points from a previous session in an attempt to make them more
accurate. “Refine” is optional; use it only if the gray balance in your test document still
needs improvements after the first AutoGray session. If two “Refine” applications
cannot fix the situation, it is probably because your test document is not correctly
addressing the output profile, or because the output profile that you are editing does
not adequately describe the actual copier and printing conditions. Applying “Refine”
more than twice is not recommended.
“New” starts a fresh AutoGray session by first removing all edit points from a previous
session. “New” is recommended when you have performed more than two “Refine”
applications.
3
3-20
7.
ColorWise Pro Tools
If the output profile contains edit points that were entered by a user, choose Proceed
to remove the points and continue with the AutoGray adjustment.
“Proceed” starts a fresh AutoGray session by first removing all user edit points. This is
because AutoGray cannot modify user-entered points.
8.
In the Print Options dialog box that appears, choose the Input Tray to use for the
measurement page and click Print.
The Page Type is automatically set to AutoGray Measurement Page.
The Paper Size is automatically set to LTR/A4.
9.
Click OK to confirm printing of the measurement page.
3
3-21
Color Editor
10.
Retrieve the page from the copier.
11.
Follow the directions in the dialog box for placing the Gray Scale strip and the
AutoGray measurement page on the copier glass, and then click Continue.
Messages display the progress of the gray balance adjustment.
12.
When the adjustment is complete, click OK.
Color Editor displays the adjusted output profile curve. New edit points have been
inserted by AutoGray to modify the gray balance, in much the same way an expert user
would have done manually.
13.
To make edits to the output profile curve, click AutoGray again.
14.
Choose Refine to fine-tune the curve, or New to acquire a new curve for editing.
For more information on these actions, see step 6.
Checking edited profiles
You can view a printed sample of a profile before you save it to the GA-1120 by
printing one of the following:
• Comparison Page provided with ColorWise Pro Tools, which shows a comparison of
images and colored patches with and without edits
• User-defined CALIB.PS in the Hold Queue
You can create a custom comparison page and save it as a PostScript or Encapsulated
PostScript (EPS) file called CALIB.PS. Print the file to the Hold Queue of the
GA-1120 from your application, or download it to the Hold Queue with Fiery
Downloader (see page 2-8).
3
3-22
TO
ColorWise Pro Tools
CHECK A PROFILE
1.
Click Test Print from the Color Editor window.
2.
Select a page to print, specify the paper size and input tray (Comparison Page only),
and then click Print.
For Comparison Page, choose the paper size (LTR/A4 or 11 x 17/A3) from the Paper
Size menu. In the Input Tray menu, choose the paper source.
Color Setup
You can use Color Setup to set the default ColorWise settings for the GA-1120. To
access Color Setup, click its icon in the ColorWise Pro Tools main window.
Setting default ColorWise options
Color Setup allows you to configure the default color management settings for the
GA-1120. These settings are applied to all print jobs sent to the GA-1120, unless a
user overrides them for an individual job by changing settings in the printer driver.
These default settings can also be overridden using Command WorkStation or Fiery
WebSpooler™. Color Setup maintains a connection to the GA-1120, so changes made
in Profile Manager appear automatically. In addition, the defaults set in Color Setup
are automatically reflected in other GA-1120 tools that list default settings.
3
3-23
Color Setup
You can also reset the GA-1120 to its factory default settings by clicking Factory
Default in the lower-left corner of the Color Setup window.
The options in Color Setup are arranged in a pattern representing the flow of color
processing that takes place on the GA-1120.
For those color options that offer multiple choices, make your selection from the menu
that appears. For RGB Separation, make your selection by selecting the appropriate
radio button. Other options are selected simply by selecting a check box next to the
option name. Once you have made your changes, you must click OK or Apply for the
changes to take effect. Clicking OK sets the new defaults and closes the Color Setup
window. Clicking Apply sets the new defaults and keeps the Color Setup window
open. Clicking Cancel closes the Color Setup window without applying any changes
to the default settings.
For most users, the factory defaults result in optimal color output.
A
A-1
Color Measurement Instruments
This appendix explains how to set up and calibrate the X-Rite DTP32 automatic
scanning densitometer, available as a separately purchased option.
Appendix A:
Color
Measurement
Instruments
Using the X-Rite DTP32 densitometer
ColorWise Pro Tools are designed to work with the X-Rite DTP32 reflection
densitometer, which feeds color measurements to the GA-1120 automatically.
N OTE : Measurements from other densitometers can be input using a simple
ASCII file format (see Appendix B).
Setting up the DTP32
Before you calibrate the GA-1120 using the X-Rite DTP32, you need to connect,
configure, and calibrate the densitometer to prepare for measuring the printed patches
(see “Calibrating the DTP32” on page A-4). For additional information about setting
up and using the DTP32, see the separate documentation included with the
densitometer.
TO
CONNECT THE
X-R ITE DTP32
TO THE COMPUTER
1.
Turn off the computer.
2.
Plug the square end of the interface cable (looks like a modular phone plug) into the
I/O port on the side of the X-Rite DTP32.
Square connector
A
A-2
3.
Color Measurement Instruments
Attach the connector to the computer.
For a Windows computer, insert the 8-pin mini-DIN end of the interface cable into
the 9-pin DB9 Connector cable adapter. Insert the 9-pin end into the COM1 or
COM2 port on the computer and tighten the screws. If the available port on your
computer is 25-pin, you must use the 8-pin-to-25-pin adapter.
Unused connector
Square connector
Connect to computer
Connect to adapter
Interface cable
For a Mac OS computer, connect the 8-pin mini-DIN plug directly into the serial port
of the computer.
Unused connector
Connect to serial port
N OTE : For Mac OS computers with a USB port (for example, an iMac), you need an
adapter to connect the DTP32 to your computer. For information on supported
adapters, see the X-Rite, Inc. web site (www.x-rite.com).
A
A-3
Color Measurement Instruments
4.
Plug the small connector on the adapter cable into the side of the X-Rite DTP32 and
plug the AC adapter into a wall outlet.
5.
Turn on the computer.
6.
Calibrate the DTP32 (see the following section).
7.
Calibrate the GA-1120 using ColorWise Pro Tools (see page 2-17).
Small connector
AC adapter
A
A-4
Color Measurement Instruments
Calibrating the DTP32
You will need the black-and-white X-Rite Auto-Cal Strip included with the
densitometer. Calibrating the densitometer does not require ColorWise Pro Tools.
TO
CALIBRATE THE
X-R ITE DTP32
1.
Connect the densitometer to the computer and supply power (see page A-1).
2.
From the Main Menu on the X-Rite DTP32 display, press the p1 key once to reach p2.
3.
Press the cal key.
Calibrating motor speed is displayed, followed by the words INSERT CAL STRIP.
4.
Insert the arrow end of the X-Rite Auto-Cal Strip into the 35mm slot on the front of
the X-Rite DTP32 until it stops or the roller starts pulling the strip.
Reading appears momentarily, followed by the density values and CALIBRATION OK.
The densitometer automatically returns to the MAIN MENU.
If UNRECOGNIZABLE STRIP appears, repeat the process or try cleaning the strip (see the
X-Rite DTP32 Operating Manual).
5.
Start ColorWise Pro Tools and calibrate the GA-1120 (see the following section).
Recalibrate the DTP32 at least once per month. For critical color, calibrate the
densitometer every time you calibrate the GA-1120. The DTP32 may also warn
periodically that it requires calibration.
B
B-1
Appendix B:
Importing
density
measurements
Importing density measurements
This appendix describes Simple ASCII File Format, which can be used to import
density measurements from measurement devices. To use your own measurement data
from an alternate measurement instrument, record your individual readings in a text
file and structure it as follows.
Simple ASCII Import File Format (SAIFF)
This format describes Status T measurement data and is for import into the
ColorWise Pro Tools Calibrator. The three possible file formats are:
• 1D Status T density for EFI 34 patch page
• 1D Status T density for EFI 21 patch page
• 1D Status T density for other pages (maximum of 256 patches per ink)
The file format is ASCII and has no tabs. A single space or multiple spaces are used
as delimiters. Blank lines are not allowed. Each line in the file represents four patches
(C, M, Y, K) of a specific ink value. Comments may be on any line in the file, and
these lines start with a pound sign (#) followed by a space. A line with a pound sign
followed by any character other than a space has been reserved. Comments must be
on an entire line by themselves.
Each line of data contains five values. The first number is the sequential patch number
(for EFI 34 and EFI 21 pages) or the ink value percentage (for other pages). The four
values that follow are the density values of C, M, Y, and K of the corresponding patch.
Lines are ordered either by increasing sequential patch numbers or by increasing the
ink percentage.
For Windows computers, the file extension must be .cm1. For Mac OS computers, the
file type must be ‘TEXT’.
Measurement data in EFI 34 and EFI 21 are paper-relative. For other pages, if the first
line corresponds to zero ink value, the Calibrator assumes that the measurement data is
absolute and adjusts it to become paper-relative by subtracting the density values of the
first line from the remaining patches.
B
B-2
Importing density measurements
Example of 1D Status T density for EFI 34 patch page
This file format is used to specify the Status T density measurements of the EFI 34
patch page. The value in the first column is the patch number. The first patch must be
1 and the last must be 34.
#!EFI 3
# EFI ColorWise 2.0 Data
type: 1DST34
# Cyan
Magent Yellow Black
1 0.0300 0.0400 0.0200 0.0400
2 0.0600 0.0700 0.0800 0.0700
3 0.1000 0.1000 0.1000 0.1000
(…more data…)
33 1.6700 1.3400 0.8900 1.6700
34 1.7200 1.4300 0.9300 1.7500
Example of 1D Status T density for EFI 21 patch page
This file format is used to specify the Status T density measurements of the EFI 21
patch page. The value in the first column is the patch number. The first patch must be
1 and the last must be 21.
#!EFI 3
# EFI ColorWise 2.0 Data
type: 1DST21
# Cyan
Magent Yellow Black
1 0.0300 0.0400 0.0200 0.0400
2 0.0600 0.0700 0.0800 0.0700
3 0.1000 0.1000 0.1000 0.1000
(…more data…)
20 1.6700 1.3400 0.8900 1.6700
21 1.7200 1.4300 0.9300 1.7500
B
B-3
Importing density measurements
Example of 1D Status T density for an arbitrary page
This file format is used to specify the Status T density measurements of a user-defined
patch page. The value in the first column is the ink/toner percentage of the patch. The
first percentage must be 0 and the last percentage must be 100. The percentages must
increase in between.
#!EFI 3
# EFI ColorWise 2.0 Data
type: 1DST
# percnt Cyan Magent Yellow Black
0.0000 0.0300 0.0400 0.0200 0.0400
0.3922 0.0600 0.0700 0.0800 0.0700
1.1765 0.1000 0.1000 0.1000 0.1000
(…more data…)
98.0000 1.6700 1.3400 0.8900 1.6700
100.0000 1.7200 1.4300 0.9300 1.7500
Index
A
Absolute Colorimetric rendering style 1-6
Apple Standard setting, RGB Source Profile
option 3-2
Apple Standard setting, RGB Source profile
option 1-7
AutoCal calibration
from ColorWise Pro Tools 2-17
from Control Panel 2-20
B
Black Detection option 1-5
Black Overprint option 1-4, 1-13
Black Overprint Style option 1-5
black text and line art 1-4, 1-12 to 1-13
Brightness option 1-3
C
CALIB.PS file 3-21
calibration
AutoCal 2-17 to 2-21
checking status 2-5
ColorCal 2-17 to 2-21
Comparison Page 2-8
curves 2-3, 2-9
DTP32 2-10
ED-100 2-13
from Control Panel 2-20
from the Control Panel 2-5
importing density measurements B-1
to B-3
importing target file 3-12
measurement page 2-3
measurements 2-2
overview 2-1 to 2-5
patches 2-3
restoring defaults 2-10
scanner 2-18
scheduling 2-4
targets 2-1, 2-2, 2-3
viewing measurements 2-9
Calibrator
Expert Mode 2-8
printing Comparison Page 2-8
restoring defaults 2-10
using 2-5 to 2-10
viewing measurements 2-9
CMYK Simulation Method
option 1-4, 1-10
CMYK Simulation Profile option 1-4, 1-9
Color Charts 2-4
Color Editor
AutoGray 3-18
dot gain adjustment 3-13
Edit Modes 3-10
importing calibration target 3-12
undoing simulation edits 3-17
color management system (CMS) xii
Color Mode option 1-3
color profiles, see ICC profiles
Color Reference pages 2-4
color rendering dictionary
(CRD) xii, 1-3, 1-6, 1-18
color rendering styles, see rendering styles
Color Setup 3-22
color space 1-1, 1-3, 1-4
ColorCal calibration
from ColorWise Pro Tools 2-17
from Control Panel 2-20
ColorSync Color Matching option 1-19
ColorWise
key features xii, 3-22
print options 1-3 to 1-14, 3-22
workflow diagram 1-2
I-2
Index
ColorWise Pro Tools
Calibrator 2-5 to 2-10
checking calibration status 2-5
ColorWise Pro Tools
Color Editor 3-10 to 3-22
Color Setup 3-22
Profile Manager 3-1 to 3-10
Comparison Page 2-8, 3-21
composites, printing 1-12, 1-14
Configuration page 2-5
Contrast ICC rendering style 1-6
Control Panel
calibration from 2-5, 2-20
removing calibration 2-22
custom simulations 1-9
D
default color controls set in Setup 1-3
densitometer
DTP32 2-10 to 2-12, A-1 to A-4
ED-100 2-12 to 2-16
density values 2-3, 2-5
importing B-1 to B-3
DIC, CMYK Simulation option 3-2
dot gain values, adjusting 3-13
drivers, see printer drivers
DTP32
calibrating with 2-10
instrument calibration A-4
setup A-1
E
ED-100
calibrating with 2-13
overview 2-12
EFI Densitometer, see ED-100
EFIRGB, RGB Source Profile
option 1-7, 3-2
Euroscale, CMYK Simulation option 3-2
F
Full (Output GCR) setting, CMYK
Simulation Method option 1-11
Full (Source GCR) setting, CMYK
Simulation Method option 1-10
G
Gamma option 1-3
Graphics ICC rendering style 1-6
gray balance, correcting 3-18
I
ICC profiles
backing up 3-6
default directory 3-4
defined xiii
defining 3-8
deleting 3-7
descriptions 3-2
downloading 3-4
editing 3-10 to 3-22
gray balance, correcting 3-18
rendering styles 1-6
setting defaults 3-3
Image ICC rendering style 1-6
M
Mac OS color management options 1-18
to 1-20
measurements page 2-3
N
None setting, RGB Source Profile
option 1-8
O
Other setting, RGB Source Profile
option 1-7
Output Profile option 1-4, 1-11
output profiles
calibration sets for 2-3, 2-4, 3-9
I-3
Index
P
PANTONE Coated Color Reference 1-14
passwords
for calibration 2-2, 2-5
for profile management 3-2
patches page 2-3
Perceptual ICC rendering style 1-6
Phosphors option 1-3
Photographic rendering style 1-6
PostScript color issues 1-3, 1-8, 1-13
PostScript Color Management 1-18
PostScript Color Matching option 1-18
PPD 1-16, 1-18
Presentation rendering style 1-6
Print Mode option 1-3
print options 1-3 to 1-14
Mac OS 1-18 to 1-20
setting defaults 3-22
Windows 1-16 to 1-17
printer drivers
Mac OS 1-18 to 1-20
two-way communication 1-7, 1-9, 1-11
Windows 1-16 to 1-17
Profile Manager
backing up profiles 3-6
defining profiles 3-8
deleting profiles 3-7
downloading profiles 3-4
setting defaults 3-3
profiles, see ICC profiles
Pure Black Text/Graphics option 1-4, 1-12
Q
Quick setting, CMYK Simulation Method
option 1-10
R
Relative Colorimetric rendering style 1-6
Rendering Style option 1-3
rendering styles xii, 1-3, 1-6
RGB images
defining source profile for 1-7
defining source profiles for 3-1
PostScript and non-PostScript
conversion 1-8
RGB Separation option 1-4, 1-8
RGB Source Profile option 1-2, 1-3, 1-7
S
SAIFF format B-1 to B-3
Saturation ICC rendering style 1-6
scanner
calibrating 2-18
separations
printing 1-12, 1-14
target color space 1-4, 1-8
Setup, default color controls set in 1-3
Sharpness option 1-5
simulations, custom 1-9
Source 1–10 setting, RGB Source Profile
option 1-7
Spot Color Matching option 1-5, 1-14
spot colors, matching to CMYK
equivalents 1-14
sRGB, RGB Source Profile option 1-7, 3-2
Status T B-1
SWOP setting, CMYK Simulation Profile
option 1-10, 3-2
T
targets, for calibration 2-3
Test Page 2-5
transfer functions 2-3
two-way communication 1-7, 1-9, 1-11
U
undercolor removal (UCR) 1-8
W
White Point option 1-4
Windows color management options 1-16
to 1-17
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