Oki C9800hdn, C9800hn Reference Manual

Ensuring color accuracy when you save a file

Output profiles

Color Reference Guide for C9800 - 3

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1-14

1-15

2-16

2-18

2-19

2-20

2-21

2-22

3-23

3-24

3-25

3-26

4 Contents

Chapter 4: Managing Color in PostScript Applications

Working with PostScript applications

Using color matching tools with PostScript applications

Using swatch color matching tools

Using the CMYK Color Reference

Using the PANTONE reference

Defining colors

Working with imported images

Using CMYK simulations

Using application-defined halftone screens

Ensuring color accuracy when you save a file

Chapter 5: Managing Color in Adobe Photoshop

Specifying color settings

Configuring Photoshop color settings

Saving files from Photoshop

Choosing a file format

Selecting options when printing

Advanced tips for using PostScript color management

Chapter 6: Managing Color in Page Layout Applications

Adobe InDesign 2.0.1 and 1.5.2

InDesign color settings

Adobe PageMaker 7.x and 6.5 for Mac OS and Windows

Windows version requirement

PageMaker color settings

Using optional Color Management from PageMaker

Color Reference Guide for C9800 - 4

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6-53

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6-59

6-60

5 Contents

QuarkXPress 5.x and 4.x for Mac OS

Optional Color Management from QuarkXPress

Windows version requirement

Adobe Illustrator for Windows and Mac OS

Chapter 7: Managing Color in Illustration Applications

Note about color models in Adobe Illustrator

Illustrator color settings

Specifying print options

Saving files for importing into other documents

Specifying print options

Using Illustrator color management

FreeHand 10.x, 9.x, and 8.x for Windows and Mac OS

Setting FreeHand color settings

Defining colors

Saving files for importing into other documents

Optional color management in FreeHand

CorelDRAW for Windows and Mac OS

Defining colors

Saving files for importing into other documents

Specifying print options

Optional color management in CorelDRAW

Appendix 8: Desktop Color Primer

The properties of color

The physics of color

Color Reference Guide for C9800 - 5

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6 Contents

CIE color model

Hue, saturation, and brightness

Additive and subtractive color systems

Understanding color gamut

Printing techniques

Halftone and continuous tone devices

Using color effectively

A few rules of thumb

Color wheel

Color and text

Raster images and vector graphics

Optimizing files for processing and printing

Resolution of raster images

Scaling

Glossary

Bibliography

Index

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97

105

106

Color Reference Guide for C9800 - 6

This publication is protected by copyright, and all rights are reserved. No part of it may be reproduced or transmitted in any form or by any means for any purpose without express prior written consent from Electronics for Imaging, Inc. Information in this document is subject to change without notice and does not represent a commitment on the part of Electronics for Imaging, Inc.

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This product may be covered by one or more of the following U.S. Patents:þ 4,716,978, 4,828,056, 4,917,488, 4,941,038, 5,109,241, 5,170,182, 5,212,546,

5,260,878, 5,276,490, 5,278,599, 5,335,040, 5,343,311, 5,398,107, 5,424,754, 5,442,429, 5,459,560, 5,467,446, 5,506,946, 5,517,334, 5,537,516,

5,543,940, 5,553,200, 5,563,689, 5,565,960, 5,583,623, 5,596,416, 5,615,314, 5,619,624, 5,625,712, 5,640,228, 5,666,436, 5,745,657, 5,760,913,

5,799,232, 5,818,645, 5,835,788, 5,859,711, 5,867,179, 5,940,186, 5,959,867, 5,970,174, 5,982,937, 5,995,724, 6,002,795, 6,025,922, 6,035,103,

6,041,200, 6,065,041, 6,112,665, 6,116,707, 6,122,407, 6,134,018, 6,141,120, 6,166,821, 6,173,286, 6,185,335, 6,201,614, 6,215,562, 6,219,155,

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, 6,271,937, 6,278,901, 6,279,009, 6,289,122,

6,292,270, 6,299,063, 6,310,697, 6,321,133, 6,327,047, 6,327,050, 6,327,052, 6,330,071, 6,330,363, 6,331,899, 6,340,975, 6,341,017, 6,341,018,

6,341,307, 6,347,256, 6,348,978, 6,356,359, 6,366,918, 6,369,895, 6,381,036, 6,400,443, 6,429,949, 6,449,393, 6,476,927, 6,490,696, 6,501,565,

6,519,053, 6,539,323, 6,543,871, 6,546,364, 6,549,294, 6,549,300, 6,550,991, 6,552,815, 6,559,958, 6,572,293, 6,590,676, 6,606,165, 6,633,396,

6,636,326, 6,643,317, 6,647,149, 6,657,741, 6,662,199, 6,678,068, RE33,973, RE36,947, D341,131, D406,117, D416,550, D417,864, D419,185,

D426,206, D439,851, D444,793.

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Auto-Count, ColorCal, ColorWise, Command WorkStation, EDOX, EFI, Fiery, the Fiery logo, MicroPress, Printcafe, PrinterSite, Prograph, Proteus, and

Spot-On are registered trademarks of Electronics for Imaging, Inc., in the U.S. Patent and Trademark Office and/or certain other foreign jurisdictions. Bestcolor is a registered trademark of Best GmbH in the U.S. Patent and Trademark Office.

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Color Reference Guide for C9800 - 7

This product includes software developed by the Apache Software Foundation (http://www.apache.org/).

FCC Information

WARNING: FCC Regulations state that any unauthorized changes or modifications to this equipment not expressly approved by the manufacturer could void the user’s authority to operate this equipment.

Class A Compliance

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, and uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause interference in which case the user will be required to correct the interference at his own expense.

Industry Canada Class A Notice

This Class A digital apparatus complies with Canadian ICES-003.

Avis de Conformation Classe A de l’Industrie Canada

Cet appareil numérique de la Classe A est conforme à la norme NMB-003 du Canada.

Class B Declaration of Conformity

This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

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Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

Consult the dealer or an experienced radio/TV technician for help.

In order to maintain compliance with FCC regulations, shielded cables must be used with this equipment. Operation with non-approved equipment or unshielded cables is likely to result in interference to radio and TV reception. The user is cautioned that changes and modifications made to the equipment without the approval of manufacturer could void the user’s authority to operate this equipment.

Industry Canada Class B Notice

This Class B digital apparatus complies with Canadian ICES-003.

Avis de Conformation Classe B de l’Industrie Canada

Cet appareil numérique de la Classe B est conforme à la norme NMB-003 du Canada.

RFI Compliance Notice

This equipment has been tested concerning compliance with the relevant RFI protection requirements both individually and on system level (to simulate normal operation conditions). However, it is possible that these RFI Requirements are not met under certain unfavorable conditions in other installations. It is the user who is responsible for compliance of his particular installation.

Dieses Gerät wurde sowohl einzeln als auch in einer Anlage, die einen normalen Anwendungsfall nachbildet, auf die Einhaltung der Funkentstörbestimmungen geprüft. Es ist jedoch möglich, dass die Funkentstörbestimmungen unter ungünstigen Umständen bei anderen Gerätekombinationen nicht eingehalten werden.

Für die Einhaltung der Funkentstörbestimmungen einer gesamten Anlage, in der dieses Gerät betrieben wird, ist der Betreiber verantwortlich.

Compliance with applicable regulations depends on the use of shielded cables. It is the user who is responsible for procuring the appropriate cables.

Die Einhaltung zutreffender Bestimmungen hängt davon ab, dass geschirmte Ausführungen benützt werden. Für die Beschaffung richtiger Ausführungen ist der

Betreiber verantwortlich.

Color Reference Guide for C9800 - 8

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Color Reference Guide for C9800 - 9

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Color Reference Guide for C9800 - 10

11 About this guide

Introduction

This guide provides a reference for information about optimizing color printing with the C9800 and improving color quality and performance for all printer models.

Specific features and options may vary, depending on the C9800 model at your site.

About this guide

This guide provides an overview of general color concepts, with a specific focus on color management for print output. It describes multiple scenarios (called workflows) during which color information can be specified, and makes recommendations about when to use each type of workflow. It also provides application notes that explain how to print to the Fiery from popular Microsoft Windows and Apple Mac OS applications.

The Glossary at the back of this guide defines terms and concepts—for example, output profile—that appear throughout this manual. Color terms and concepts such as

“RGB data,” “color space,” “spot color,” “gamut,” and “source profile” are used throughout this guide. If you are new to desktop color, or if any terms are unfamiliar, consult the

Glossary

near the end of this guide.

For additional information

For additional information about the topics discussed in this guide, see:

• Color Guide —for detailed information about the color printing options and settings available with your Fiery, as well as the ColorWise ® color management system built into your Fiery.

• Printing Guide —for information about how to set the ColorWise print options.

• User Software Installation Guide —for information about the software provided with your Fiery, including sample color reference pages used to verify print results.

• Job Management Guide —for information about performing color management tasks and using ColorWise Pro Tools

™

For general information about printing in color, see

Appendix 8 and the sources in

the Bibliography .

Color Reference Guide for C9800 - 11

1-12 Understanding color management systems

Chapter 1:

Overview of Color

Management

Concepts

To create successful color documents and presentations, you can take advantage of the features of color management software as they are implemented by the Fiery and on your desktop computer. This chapter is devoted to various elements of color management that contribute to predictable color results.

Understanding color management systems

A color management system (CMS) is a “translator” between the color space of the source device (for example, the monitor or a scanner) and the color space of the destination device (for example, the printer). It compares the color space in which the source image was created to the color space in which the job will be output, and adjusts the colors in the document to maintain consistency across different devices. A CMS typically uses a device-independent color space, such as CIELAB, as its intermediate color space. To perform its translation, a CMS needs information about the color space

of the source image and the gamut of the printer. This information is provided

through profiles , often created by the makers of the computer monitor or printer.

The end product of a CMS conversion is a printed document or an image file in the gamut of a particular printer.

There has been progress toward standardization in the field of digital color management systems. Both the Windows and Mac OS operating systems support an industry standard format developed by the International Color Consortium (ICC).

This ICC format is implemented on Windows computers as Image Color Matching

(ICM) and on Mac OS computers in ColorSync. More and more software developers are also incorporating color management systems into high-end applications.

The Fiery color management system,

ColorWise

, supports this standard profile format.

How color management works

Before you can print a color document, the color data in it must be converted to the

gamut of the printer. Whether performed by the Fiery or a host-based CMS , the

process of converting color data for a printer is the same: the CMS interprets RGB

Color Reference Guide for C9800 - 12

1-13 Understanding color management systems

image data according to a specified source profile

and adjusts both RGB and CMYK

data according to a specified output profile , also called a destination profile by some

color management systems.

Color management system

Source profile

Device-independent color space

Output profile

Input data Printed data or file

The source profile defines the RGB color space of the image’s source—characteristics such as the

white point ,

gamma

, and the type of phosphors used. The output profile

defines the gamut of an output device, such as a printer. The Fiery (or the host-based

CMS) uses a device-independent color space to translate between the source color

space and the color space of the output device.

The Fiery allows you to specify default and override settings for the source color space information and the output profile information (see the Color Guide Chapter 1 ). When you use these settings, you do not need to use the features of other color management systems. Your Fiery software includes

ICC profiles for use with other color

management systems, although conflicts may arise when the Fiery CMS is used in conjunction with a host CMS.

You can also use color management systems to adjust color data to the gamut of an output device other than the one to which you are printing. This process of simulating another output device is commonly used for proofing jobs that will be printed on an offset press. The Fiery simulation feature is described in detail in Chapter 1 of the

Color Guide .

The type of print job and the final output device—Fiery or offset press—determines the workflow that allows you to achieve the best results. For information about

choosing workflows, see “Using Color Management Workflows” on page 2-16.

Color Reference Guide for C9800 - 13

1-14 Overview of Color Management Concepts

Using ColorWise and application color management

The Fiery color management system,

ColorWise

is designed to provide both casual and expert users the best color output for a variety of purposes. Several applications also provide their own color management system. This guide describes how to optimize print output using both ColorWise color management and application color management.

The Fiery can intelligently manage the printed appearance of RGB ,

CMYK , and

spot colors

. You can allow the Fiery to manage color for most color printing jobs without adjusting any settings.

A desktop (host-based) color management system uses ICC profiles

to convert colors from one device gamut to another (see

Appendix 8

). The color data is converted when it passes from one application to another or when the job is sent to the printer; thus, the processing occurs on your computer, as opposed to the Fiery.

Conventional color management systems typically address only color conversions, and they occupy your computer processor. When you use ColorWise, jobs leave your computer faster, and are processed more quickly on the Fiery.

The advantages to ColorWise color management versus desktop (application) color management include:

• Relieving your computer from performing additional processing. Delaying color conversions until the color data reaches the Fiery frees your computer so that you can continue working, and color conversions on the Fiery are, in most cases, much faster than similar conversions on a host computer.

• Eliminating the potential for undesirable color management-related conflicts, such as iterative color conversions and inconsistent color. The Fiery applies global corrections to specific groups of RGB, CMYK, and spot colors to avoid such conflicts.

• Accepting RGB files in addition to larger CMYK files from applications, which minimizes network traffic and enables jobs to print faster.

Color Reference Guide for C9800 - 14

1-15 Using ColorWise and application color management

ColorWise uses ICC profiles to convert colors to the device gamut or simulate other devices, such as an offset printing press. ColorWise manages color conversions for all users printing to the Fiery from Windows and Mac OS computers. It allows users to follow a simple workflow with minimal intervention using robust default settings, while giving advanced users the control and precision they need.

Using ColorWise color management tools

Your Fiery user software includes several types of color reference pages that allow you to see the range of colors that can be printed on your printer. For predictable color, use the color reference pages when defining the color in your document.

The resources available are:

• RGB Color Reference—a Microsoft Word file and a Microsoft PowerPoint file that allow you to view the colors available in the standard palettes of office applications

and to see how those colors print on the Fiery (see “Using color matching tools with office applications” on page 3-24).

• CMYK Color Reference—an 11-page downloadable PostScript file of CMYK color

patches (see “Using the CMYK Color Reference” on page 4-29).

• Process Simulation of PANTONE Solid Coated Colors—a 19-page downloadable

PostScript file of color patches showing CMYK equivalents of PANTONE Coated colors. This file prints differently depending on the setting of the Spot Color

Matching option (see

“Using the PANTONE reference” on page 4-29).

In addition, you can print RGB, CMY, and PANTONE color charts from the Fiery.

Color Reference Guide for C9800 - 15

2-16 Understanding workflows

Chapter 2:

Using Color

Management

Workflows

A workflow is the path a print job follows from creation to destination. In the workflow of any job, there are various points at which decisions are made about how to define, use, and translate color. The choices made, and the point at which they are made, impact the color output produced.

This chapter introduces issues with color management in specific desktop

applications and discusses the interaction between those applications and ColorWise

color management.

Understanding workflows

The term “workflow” is used to describe the path a job follows from its creation in a desktop application to final printed output. The Fiery supports a variety of workflows with different levels of complexity. There are several points at which color management

can be performed on a job (see the illustration on page 2-17 ). The information

provided at each step (for example, the type of color used) impacts the workflow of the job.

N OTE : Always consider the complexity of the workflow. Every time colors are converted, performance and color accuracy are affected. A workflow with a minimum number of steps minimizes the risk of error.

Color Reference Guide for C9800 - 16

2-17 Understanding workflows

DOCUMENT

C M

Y K

Spot

G B

Application CMS: Off

Disable the color management options provided by the application to ensure that the Fiery receives color data properly and prints it accurately. For information, see the documentation provided with your application.

Select colors based on the desired output (see “Choosing colors” on page 2-19).

Calibration

Device maintenance

SAVE AS (File Format)

EPS recommended

Select file format based on the desired output. EPS data is not manipulated.

PRINT

Set ColorWise print options

Color Server

Use ColorWise Color Management as described in this guide and the Color Guide Chapter 1 .

Printer driver color options: Off

Do not use the color management options provided by the printer driver. For more information, see the Printing Guide

Appendix A .

Calibrate as described in the Color Guide . Perform regular maintenance as recommended by the printer manufacturer.

Use the paper stock, toner, and other materials recommended by the printer manufacturer.

Best output

Color Reference Guide for C9800 - 17

2-18 Using Color Management Workflows

Standard recommended workflow

The Fiery controller is highly optimized for the C9800. ColorWise addresses issues unique to your printer, including screens, individual toner response, interactions among toners, natural smoothness of blends, and the capability to render spot and custom colors. The Fiery distinguishes text and graphics from image elements, so that

black channel information is preserved while parameters used for CMYK color separations are maintained.

The recommended standard color workflow uses ColorWise calibration and color management. The Fiery comes into play near the end of the color workflow.

For this workflow:

• Bypass any color management in the applications and printer drivers.

This ensures that the colors you selected reach the Fiery and ColorWise in a usable form. Keep in mind, however, that ColorWise fully supports color

management from applications and printer drivers (see “Using ColorWise and application color management” on page 1-14).

• Set the CMYK Simulation Profile option in ColorWise to match the CMYK color space used in the application to select the colors. Any CMYK Simulation setting

(except Match Copy, if available) applies calibration, so the response of the printer will appear to be stable.

The recommended values for CMYK Simulation are

SWOP

in the U.S., Euroscale

in Europe, and

DIC in Japan—choices that reflect the color standard for each

region. If colors have been selected specifically for your calibrated Fiery, set CMYK

Simulation to None.

• Set other ColorWise print options as appropriate. For a list and descriptions of

ColorWise print options that affect CMYK, RGB, spot, and other colors, see the

Color Guide Chapter 1 .

Color Reference Guide for C9800 - 18

2-19 Choosing colors

Choosing colors

When working with color materials, whether they are presentations, illustrations, or complicated page designs, you make aesthetic decisions about the colors you use.

After you set a goal, you must make the best use of the capabilities of your Fiery to realize your design in print. Your color printing system becomes an ally in this creative process to the extent that results are predictable :

• If you designed a poster to print on the Fiery, you want the printed colors to match the design specification.

• If you are printing presentations on the Fiery, you want to preserve the vivid colors you see on your monitor.

• If you are working with color that is to be printed on an offset press, you want the C9800 output to match other

prepress proofs

or PANTONE color swatch books.

The colors that you define when creating a file in an application, and the color management tools within the application that you use, impact how the file is processed

(workflow) and the final output you can expect.

Use color management to control color output by:

• Selecting a color model—different types of applications use different color models.

The color model you select, and whether or when data is converted from one color model to another, influences the final color output.

• Optimizing for output type—the type of final output influences your color and application choices.

• Using color matching tools—the Fiery provides several tools to preview colors available on a device and define them within an application.

Color Reference Guide for C9800 - 19

2-20 Using Color Management Workflows

Understanding color models

Colors can be defined in several different color models, the most common being RGB,

CMYK, and the spot color matching system (such as PANTONE). Depending on the application you use, you may or may not have a choice of the color model.

•

RGB colors are used when you take output from an RGB device such as a digital

camera or a scanner. Another use of the RGB color model is for displaying colors on a monitor.

•

Spot colors , such as PANTONE, are special inks manufactured to run on an offset

colors are what most printers use.

•

printing press. Spot colors can be simulated using CMYK toners (also known as

process color inks). With the Spot Color Matching print option, you can determine

how spot colors are printed at the Fiery:

Spot Color Matching On uses color tables built in the Fiery to simulate the spot color with the closest equivalent available using the CMYK toners of the C9800.

Spot Color Matching Off instructs the Fiery to simulate the spot color using CMYK equivalents defined by the spot color manufacturer. These are the same CMYK values used by applications that include spot color libraries. This CMYK combination is then printed with the CMYK Simulation setting you choose, such as

SWOP

DIC

The color model used by your application determines the methods available for choosing colors, as well as the way color data is transmitted to the Fiery:

• Office applications , such as presentation software, spreadsheets, and word processing programs, use the RGB color model. They typically transmit only RGB data to the

Fiery.

• Illustration applications use both the RGB and CMYK color models, but typically transmit only CMYK data to the Fiery.

• Pixel-editing applications use both the RGB and CMYK color models. They can transmit either RGB or CMYK data to the Fiery.

Color Reference Guide for C9800 - 20

2-21 Choosing colors

Optimizing for output type

The Fiery can be used for on-demand color printing and for color proofing.

On-demand color printing refers to those jobs for which the C9800 is the final print device. Printing jobs to the Fiery in preparation for printing on an offset press is referred to as color proofing. Both types of Fiery print jobs can use RGB, CMYK, and spot colors.

Characteristics of on-demand jobs

Bright, saturated colors are often desirable.

Colors are achieved using the full range of colors available, referred to as the full

gamut

of the printer or, more simply, device CMYK.

Characteristics of offset proofs

Require the printed colors to match those from another set of CMYK printing conditions.

Colors that are specified for an offset press require

The Fiery allows you to use RGB or

simulation that is optimized for proofing on the printer.

N OTE : The term on-demand applies to producing printed output when it is needed.

You may be familiar with the term short-run , which usually applies to the volume of a printing task. Although these terms do not mean exactly the same thing, the term on-demand in this manual applies also to short-run printing scenarios. Because you can print as many pages as you need and can reprint jobs quickly, the Fiery performs equally well in either environment.

The type of printing you plan for the document—on-demand color printing on the

C9800 versus color proofing for eventual printing on an offset press—determines the way you define colors, as well as the print option settings you choose.

• For on-demand color printing on the C9800, use any application and define colors in either RGB or CMYK. If your application supports it, you can also choose colors from the PANTONE color library. Choose the appropriate settings for print options affecting color output (for descriptions of the print options, see the Color Guide

Chapter 1 ).

• For color proofing, use a PostScript-defined color in CMYK or choose colors from color libraries such as the PANTONE color library. Placed images can also be defined in RGB or CMYK. Choose the appropriate settings for print options affecting color output (see the Color Guide Chapter 1 ).

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2-22 Using Color Management Workflows

N OTE :

an offset press run. However, sending data to an imagesetter

data when printing proofs for

usually requires

CMYK data.

Maintaining color accuracy

For the colors you see on your monitor to match those on your printed output, they

must go through color management, including precise calibration of your monitor and

Fiery. If viewing colors on the monitor is critical, consider using a professional profiling software package and instrument, such as the EFI Color Profiler, to create a monitor profile. A monitor profile enables application to compensate for the color behavior of the monitor when displaying images. As a result, colors previewed on the monitor more closely match colors in your printed output.

If you are not equipped or inclined to maintain accurate monitor color management, you can opt for an easier approach. Determine which is more important to you— printed colors or on-screen colors.

• If displayed colors are more important, trust your eyes and your monitor. Visually select colors on your monitor, but be aware that colors will be optimized only for your monitor. When the document is opened on other monitors, the colors may look different. And even though printed colors may not match those on your monitor, they will still print to the Fiery with good results.

• If printed colors are your priority, choose colors from printed samples. By using sample colors, you ensure your printed output remains consistent, regardless of how the colors appear on different monitors. Print the palette of available colors from business applications and select colors from the printed samples. Color reference

files are included on the User Software CD. (For more information, see “Using color matching tools with office applications”

on page 3-24 and “Using color matching tools with PostScript applications” on page 4-28.) You can also print color charts

from the Fiery and select colors by name or number from the printed samples.

Advanced applications allow you to define colors in the easier-to-control spot and

CMYK color spaces. For more advice on color selection, see

“Choosing colors” on page 2-19.

Color Reference Guide for C9800 - 22

3-23 Using office applications

Chapter 3:

Managing Color

in Office

Applications

The ColorWise color management system provides complete color management for jobs printed from office applications and other applications that do not generate

PostScript. This chapter provides instructions for printing color documents from

Graphics Device Interface (GDI)

and QuickDraw

applications, such as presentation, spreadsheet, and word processing applications. Use these instructions with the

Microsoft Office applications.

Using office applications

The Fiery must receive PostScript instructions to print an image or a document. Many applications do not create these PostScript instructions, relying on the printer driver to create them. Included in this category are most word processing, spreadsheet, and

presentation graphics applications. These applications use Windows

GDI to display

and print when running Windows, and Apple

QuickDraw to display and print when

running Mac OS. We refer to these GDI and QuickDraw applications as “ office applications

.”

All office applications handle color similarly, using the same RGB color model used for the color monitor. Most office applications allow you to choose colors from a palette of preselected colors; some allow you to add new colors to the palette using a color picker.

Although some applications allow you to specify color using the CMY, HSL, and HSV color models, these applications always send RGB color data to the Fiery.

(An exception to this is a CMYK EPS file placed in the document, which is sent as

CMYK data.)

When working with color in office applications, consider the following:

• The range of colors that can be displayed in RGB on your monitor is much larger than the range of colors that can be printed on your printer. When you print the document, out-of-gamut RGB colors are mapped to the colors your printer can produce.

• Office applications send only RGB data to the Fiery. You control the rendering style of the color conversion with your selection of a

CRD .

Each CRD uses a different color rendering style and has a different way of mapping unprintable colors to the color gamut of your printer. For more information on color rendering styles, see the Color Guide Chapter 1 .

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3-24 Managing Color in Office Applications

Using color matching tools with office applications

Your Fiery user software includes two RGB color reference pages, a Microsoft Word file and a Microsoft PowerPoint file. You can print these files using different CRDs to see how the colors appear when printed to the Fiery. For best results, print the color reference page using the same print options you plan to use for your final document.

Select the colors you want to use from the printed version of the RGB color reference page and use those colors in your document.

RGB Color Reference (Microsoft PowerPoint)

Working with office applications

Before printing from these applications, make sure the appropriate printer driver and the Fiery PPD are installed on your computer, as described in the User Software

Installation Guide .

Defining color

Office applications use the RGB color model. The only way to use CMYK or

PANTONE colors is to define them in

EPS

format files with an illustration or page layout application, and then place these files in Microsoft Office documents. Colors in

EPS files are preserved until they reach the Fiery (assuming no PostScript Color

Management information was included).

Color Reference Guide for C9800 - 24

3-25 Working with office applications

Office applications use low resolution to display EPS files, but the EPS images are printed at full resolution. In general, use EPS files only when RGB colors are impractical in your specific workflow. EPS files are useful when using large or complex

images that must be printed at full resolution

or exceed the memory allocation of some

Microsoft Office applications.

Working with imported files

Your application may allow you to import a variety of file formats. If you encounter

printing problems when using other imported file formats such as TIFF and PICT,

EPS files are recommended.

N OTE : If you are unable to import EPS elements, it may be necessary to perform a

“custom install” of your Microsoft Office applications.

Even when there are no user-defined color management options within office applications, color conversions do occur when you import images or page elements that were not defined in RGB. To avoid such conversions with imported files, use the

EPS file format for non-RGB artwork that is to be imported into office applications.

All RGB images placed in a document are affected by the settings you choose for the

RGB Source and Rendering Style print options.

Mixing imported image types (Advanced color management)

If you place multiple RGB images—mixed non-photographic and photographic—into

an office application file, a single CRD may not optimize output for all the images.

In this case, you may want the photographic images to bypass the CRD altogether.

To accomplish this, open the photographic image in

“Managing Color in Adobe Photoshop” on page 5-36,

mode with a pixel-editing application, such as Photoshop, and perform color correction. Save the image as a

Photoshop EPS and import it into the document.

Selecting options when printing

There are few differences among office applications with regard to Fiery printing. To specify print options and color management settings, follow the instructions in the

Color Guide Chapter 1 . To specify these options, you must use a PostScript Level 2 (or later) printer driver, such as an Adobe PostScript Printer Driver.

Color Reference Guide for C9800 - 25

3-26 Managing Color in Office Applications

Because office applications send RGB data to the Fiery, your choice of RGB Source and Rendering Style settings are important. Specify the appropriate CRD for the desired color effect (see the Color Guide Chapter 1 ).

Output profiles

All color data in the job is affected by the output profile on the Fiery. This profile may be the one designed for your device and shipped with the Fiery, or it may be a custom profile created at your site (see the Color Guide Chapter 1 ). If necessary, print the Test

Page to see which profile is the active default on the Fiery.

Ensuring color accuracy when you save a file

Take the following steps to ensure color accuracy:

• When saving EPS files, do not include PostScript Color Management information.

This minimizes the risk of conflicting data and multiple color conversions.

PostScript Color Management causes your CMYK and RGB colors to be interpreted by the Fiery as though they were supplied in the Lab color space and, as a result, processed by CRDs, rather than your simulation settings.

• Include ICC color information in files. ColorWise does not conflict with this information, and such data is useful for identifying the specific color space used by your files.

• Do not include halftone and transfer functions.

• Turn off color management in the printer driver.

On Windows computers, if the printer driver offers Image Color Matching options, select Printer Image Color Matching.

On Mac OS computers, set the printer driver to include no color management commands at print time (see the Color Guide Chapter 1 ).

Color Reference Guide for C9800 - 26

4-27 Working with PostScript applications

Chapter 4:

Managing Color

in PostScript

Applications

This chapter provides guidelines for using applications that have the ability to write their own PostScript , such as some page layout, illustration, and pixel-editing applications. For information about using specific applications, see

“Managing Color in Page Layout Applications” on page 6-49, or

“Managing Color in Illustration Applications” on page 7-64.

Working with PostScript applications

Most applications used for illustration,

pixel editing, and page layout can create the

PostScript information they send to a PostScript printer or save in PostScript files.

Illustrator, Photoshop, PageMaker, QuarkXPress, and Macromedia FreeHand are all PostScript applications.

PostScript applications work with color in many different ways. Most allow you to choose

process colors

(by entering percentages for cyan, magenta, yellow, and black), as well as

named colors from a spot color system, such as PANTONE. When you print

composites, these applications send process-color equivalents for named spot colors

to the Fiery. In some applications, you can also choose colors using the

RGB

, HSB , HSL

, or other color models.

Generally, PostScript applications send color information to the Fiery as CMYK data.

An exception to this is an RGB image placed in a document, which is sent directly to the Fiery (unless you specify special color management settings in the application).

In addition, some PostScript applications that allow you to define colors in RGB or other color models also send data to the Fiery in those color spaces.

Color controls in PostScript applications are typically designed for printing on an offset press, and some adjustments are required for printing to the Fiery. Displayed versions of colors you choose in these applications may not match C9800 output exactly, and named colors may not print accurately on the C9800, since these colors typically require custom inks.

Color Reference Guide for C9800 - 27

4-28 Managing Color in PostScript Applications

Using color matching tools with PostScript applications

With PostScript applications, you can work with colors created with any of the color models supported by the application. All PostScript applications support CMYK; some also support RGB and other color models based on monitor display values. PostScript applications also allow you to choose named colors using one or more color libraries,

such as PANTONE (see page 4-29 ).

Using swatch color matching tools

Your Fiery user software includes several color reference pages (see

page 1-15

). By choosing colors from these reference pages, you ensure that you get the same color from your C9800. For best results, calibrate the Fiery before printing the reference pages.

N OTE : We highly recommend that you use swatch color matching to ensure predictable color printing results with the C9800 or match your C9800 output to colors produced by other printers.

N OTE : Swatch color matching does not match monitor colors to printed colors.

For this, you must use a color management system and calibrate your monitor.

Color Reference Guide for C9800 - 28

4-29 Using color matching tools with PostScript applications

Using the CMYK Color Reference

Use the CMYK Color Reference included with your Fiery user software to see how various cyan, magenta, yellow, and black combinations look when printed on your

C9800.

To print the CMYK Color Reference, download the file to the Fiery. The printed pages display groups of color patches in graduated combinations of yellow, magenta, and cyan, and smaller patches that include 25%, 50%, and 75% black. Refer to these pages to pick colors and specify process color values in your application. For the location of the file on the EFI Utilities CD, see the User Software Installation Guide .

Using the PANTONE reference

Use this reference (Process Simulation of PANTONE Solid Coated Colors) included with your Fiery user software to help ensure predictable results with colors chosen from the PANTONE color library.

The information printed by this reference depends on the Spot Color Matching setting.

• Spot Color Matching On —Prints swatches that simulate the spot color with the closest equivalent available using the CMYK toners of the C9800. The equivalent

PANTONE color name/number is printed below each swatch.

Color Reference Guide for C9800 - 29

4-30 Managing Color in PostScript Applications

• Spot Color Matching Off —Prints swatches of the CMYK equivalents of PANTONE colors as defined by PANTONE. (These are the same CMYK values defined in applications that include PANTONE libraries.) The CMYK values used to produce the color, as well as the PANTONE color name/number, are printed below each swatch.

To print the reference, download the file to the Fiery. For the location of the file on the

User Software CD, see the User Software Installation Guide . If the default Spot Color

Matching setting on the Fiery is not the setting you want to use for printing the

PANTONE colors, download the file to the Hold queue, and then override the Spot

Color Matching setting using a job management utility, such as Command

WorkStation (see the Job Management Guide ).

Color Reference Guide for C9800 - 30

4-31 Defining colors

Defining colors

The methods and options available for defining colors depend on the type of

PostScript application that you are using.

Color model

CYMK

Application type

Photoshop

Page layout application

Illustration application

Color definition notes

In Photoshop you can choose colors with various color models, including HSB, CIE Lab, RGB, and CMYK.

Page layout applications generally use the CMYK color model.

Some allow you to define colors with other color models and may be able to send that data to the Fiery in those other color models. Generally, however, CRDs (which affect only RGB data) do not affect colors defined in page layout applications.

For predictable results with CMYK colors, use the CMYK

Color Reference when defining colors in page layout applications (see

“Using color matching tools with PostScript applications” on page 4-28).

All illustration applications use the CMYK color model.

Although you may be allowed to define colors using other color models, these applications generally send only CMYK data to the Fiery.

For predictable results with CMYK colors, use the CMYK

Color Reference pages when defining colors (see “Using color matching tools with PostScript applications” on page 4-28).

Different versions of Illustrator support color models slightly

differently (see “Note about color models in Adobe Illustrator” on page 7-64).

Color Reference Guide for C9800 - 31

4-32 Managing Color in PostScript Applications

Color model

Application type

Color definition notes

RGB

Photoshop

Page layout application

Illustration application

Choose colors in Photoshop with various color models, including HSB, CIE Lab, RGB, and CMYK.

If the application allows you to define colors in RGB, determine whether it converts the RGB data to CMYK before sending it to the Fiery. If it does, this will determine which ColorWise print options affect your job.

For example, if the application converts RGB black (defined in the document as R0%, G0%, B0%) to four-color CMYK black when it sends the job to the Fiery, the option you select for the

Pure Black Text/Graphics print option has no effect when you print the job.

If you define colors in RGB and print directly from the application, the application converts the RGB data to CMYK before sending it to the Fiery. This conversion by the application determines which ColorWise print options affect your job.

For example, if the application converts RGB black (defined in the document as R0%, G0%, B0%) to four-color CMYK black when it sends the job to the Fiery, the option you select for the

Pure Black Text/Graphics print option has no effect when you print the job.

Choose named colors

from the PANTONE color library (see

“Using the PANTONE reference” on page 4-29). For best

results, use the color definition methods described in “Using swatch color matching tools” on page 4-28.

Spot

Colors

Photoshop

Page layout application

Illustration application

Color Reference Guide for C9800 - 32

4-33 Working with imported images

Working with imported images

You can import images into documents created in illustration applications (such as

Illustrator) and page layout applications (such as QuarkXPress). The recommended

formats for images imported into page layout documents are EPS

(or EPSF) and TIFF .

If you encounter a problem using a TIFF format image, use the EPS file format.

Support for importing other file formats may be provided by individual applications.

All RGB images placed in a document are affected by the RGB Source and

Rendering Style settings. The ColorWise color management system applies the specified RGB Source setting to all RGB data and then uses the specified Rendering

Style ( CRD

) to perform a color conversion. An exception to this occurs if you assign

ICC profiles

to RGB images using the application’s color management tools (see the following section). In this case, the application performs the color conversion of the image and sends CMYK data to the Fiery.

N OTE : To take advantage of RGB Source and Rendering Style settings for images imported into QuarkXPress, save images in the EPS format or use the Quark

PrintRGB XTension, which outputs RGB TIFF image files without converting them to CMYK.

Mixing image types (Advanced color management)

If you place multiple RGB images—mixed non-photographic and photographic—into a file, a single CRD may not optimize output for all the images. In this case, you may want the photographic images to bypass the CRD altogether. To accomplish this, separate the image to CMYK data with a pixel-editing application, such as Photoshop, and perform color correction. Save the file as EPS or TIFF format and import it into the document.

If your application supports this feature, you can save the RGB image in TIFF format and assign it an

ICC profile

and rendering intent

when you import it into the document.

Color Reference Guide for C9800 - 33

4-34 Managing Color in PostScript Applications

Using CMYK simulations

You can specify a CMYK Simulation profile and a CMYK simulation method for a job using the CMYK Simulation Profile and CMYK Simulation Method print options

(see the Color Guide Chapter 1 ). The CMYK Simulation setting affects all CMYK color data sent by the page layout or illustration application. It can also affect RGB data sent to a page layout application if RGB Separation is set to Simulation.

• If the document contains CMYK graphics that were separated for an offset press standard, apply the corresponding CMYK Simulation setting. For example, for graphics separated for

SWOP , choose SWOP as the CMYK Simulation setting.

If you print separations to the Fiery and choose to use the Combine Separations feature in conjunction with Full Simulation, the result may not match that of the same page printed as composite.

• If the document contains CMYK graphics that were separated according to the color characteristics of a custom

ICC profile (not a press standard profile), specify the

corresponding profile as the CMYK Simulation Profile setting on the Fiery.

For more information on downloading CMYK Simulation profiles to the Fiery with

ColorWise Pro Tools, see the Color Guide Chapter 3 .

Using application-defined halftone screens

If your site has installed the Fiery Graphic Arts Package (not available for all Fiery models), you can define halftone screens from several PostScript applications and use them when printing. The results vary depending on the application.

To define a halftone screen, use the application to adjust the Frequency and Angle values of the halftone screen. For applications that use the Fiery default (InDesign,

FreeHand, QuarkXPress, and Illustrator 10), the ink dots are round; for applications that define their own shape and do not use the Fiery default (PageMaker, Photoshop, and Illustrator 9),the halftone dots may be a different shape. When you print the job, choose Application Defined for the Halftone Screen print option.

Color Reference Guide for C9800 - 34

4-35 Ensuring color accuracy when you save a file

The Frequency and Angle settings in the Application Defined halftone screen are used regardless of whether the setting for Combine Separations is set to On or Off. For

special instructions for printing separations with Photoshop, see “Selecting options when printing” on page 5-43,

N OTE : In general, using halftone screens is not recommended because the print output will have visible dots of toner rather than smooth blends. Use halftone screens only when necessary to achieve a specific style of print output.

Ensuring color accuracy when you save a file

You can take the following steps to ensure color accuracy:

• When saving EPS files, do not include PostScript Color Management information.

This minimizes the risk of conflicting data and multiple color conversions.

• Include ICC color information in files. ColorWise does not conflict with this information, and such data is useful for identifying the specific color space used by your files.

• Do not include halftone and transfer functions.

• Turn off color management in the printer driver.

On Windows computers, if the printer driver offers Image Color Matching options, select Printer Image Color Matching.

On Mac OS computers, set the printer driver to include no color management commands at print time (see the Color Guide Chapter 1 ).

Color Reference Guide for C9800 - 35

5-36 Specifying color settings

Chapter 5:

Managing Color in Adobe

Photoshop

This chapter covers features of Adobe Photoshop versions 7.x and 6.x for Windows and Mac OS. The illustrations show Mac OS dialog boxes, but the information and instructions apply equally to the Windows version of Photoshop.

Because Photoshop uses a sophisticated color management system, you should perform some color management tasks before you use Photoshop.

Specifying color settings

The following sections outline the recommended color settings for Photoshop in a

Fiery workflow. These color settings include:

Working Spaces

—Default color spaces to use when working with RGB and

documents. ICC color profiles

describe the gamut and color characteristics of these working spaces.

Color Management Policies —Instructions that tell Photoshop what to do when it encounters color data from a color space other than the specified working space.

Configuring Photoshop color settings

Photoshop uses a sophisticated color management system that handles document colors for a variety of color-managed workflows. By customizing color settings, you specify the amount of color management you want to use while working in Photoshop.

T O SPECIFY COLOR SETTINGS FOR P HOTOSHOP

Choose Color Settings from the Edit menu.

The Color Settings dialog box appears.

Select Advanced Mode.

Color Reference Guide for C9800 - 36

5-37 Specifying color settings

In Advanced Mode, a more extensive list of options is displayed.

Choose the desired working space profile for each color mode in the

Working Spaces area.

A working space specifies the color profile for documents that have no color profile associations or for documents that are newly created. It also defines color space of a document converted to RGB, CMYK, or Grayscale color modes, and for spot colors in a document.

Color Reference Guide for C9800 - 37

5-38 Managing Color in Adobe Photoshop

Choose an appropriate ICC profile

to embed when saving a file for each color space.

Use the following guidelines for specifying working spaces:

• For RGB, choose the profile for the default RGB color space used by the Fiery. In most cases, this is EFIRGB. (For information about installing the EFIRGB profile, see the User Software Installation Guide .) Consider sRGB if you usually view images on a generic PC monitor or rely on a Windows operating system to manage color on your monitor. If you choose sRGB as a working space, you must print with the

ColorWise RGB Source option set to sRGB. New RGB documents you create in

Photoshop will use this working space.

N OTE :

EFIRGB is set as the default RGB source color space

on the Fiery. No matter what RGB space you select, make sure it is available on the Fiery. For more

information on downloading RGB source profiles to the Fiery, see the

Color Guide

Chapter 3 .

• For CMYK, choose a profile that describes your target press (such as SWOP ) if you

are a prepress user. If you are an office user printing final output, choose an output profile that describes the C9800. To use a device-specific output profile, you must first upload the profile from the Fiery to your computer (see the Color Guide

Chapter 3 ). New CMYK documents you create in Photoshop will use the specified working space.

• For guidelines on specifying Gray and Spot working spaces, see your Photoshop documentation.

In the Color Management Policies area, choose policies for handling documents without embedded profiles or with embedded profiles that differ from the working space.

Unless you are an advanced color user, choose Off from the RGB, CMYK, and

Gray menus. If you specify a color management policy and open a document in an environment with a different working space than the one in which it was created, you may encounter problems. The profile embedded in a document may be overwritten if it differs from the specified working space (although the numeric color values in the document are preserved).

Color Reference Guide for C9800 - 38

5-39 Specifying color settings

If you do not choose Off for the Color Management Policies, select Profile Mismatches:

Ask When Opening, Ask When Pasting, and Missing Profiles: Ask When Opening.

This option displays an alert message that allows you to override the specified policy behavior (Off ) when opening documents or importing color data.

This is recommended so that you will be notified before any application color management is applied.

In the Conversion Options area, specify settings for converting between color spaces.

Choose Adobe (ACE) from the Engine menu to use the built-in color management engine for Photoshop.

Choose a rendering intent from the Intent menu that will optimize the color quality of

the conversion. For guidelines on choosing the rendering intent, see your Photoshop documentation.

Select Use Black Point Compensation and Use Dither (8-bit/channel images) to optimize the quality of color conversions.

Clear the Desaturate Monitor Colors By and Blend RGB Colors Using Gamma options in the Advanced Controls area.

Clearing these options helps ensure a match between your monitor display and the printed output.

Click Save to save the current group of color settings.

The Save dialog box appears.

Name the settings file, accept the default saved location, and click Save.

You can switch to your saved settings at any time by choosing the group name from the

Settings menu at the top of the Color Settings dialog box.

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5-40 Managing Color in Adobe Photoshop

Saving files from Photoshop

Before saving a file from Photoshop, perform any necessary rotating, cropping, and resizing. This speeds processing when printing from the application in which the image is placed.

When saving a document from Photoshop 6.x, you have the option to embed a color profile in the document. We recommend that you disable this option if you are sending the document to the Fiery.

Choosing a file format

We recommend that you use EPS

TIFF

file formats to save RGB images that will be

imported into other documents and printed to the Fiery. You can import EPS and

TIFF files into virtually all page layout applications.

N OTE : Although TIFF files generally display better when imported into other applications, their color and resolution characteristics may be altered by the application into which they are imported. EPS files are not modified by the application into which they are imported.

N OTE : In the following procedures, only Photoshop 7.x (Mac OS version) dialog boxes are shown. When applicable, differences between versions 7.x and 6.x, and the

Windows and Mac OS versions of Photoshop are noted.

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5-41 Saving files from Photoshop

O SAVE A DOCUMENT FROM

HOTOSHOP

Choose Save As from the File menu.

The Save As dialog box appears.

Specify settings in the Save As dialog box.

• Specify a name, file format, and location for the document.

• Clear the Embed Color Profile option (Mac OS) or ICC Profile option (Windows).

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5-42 Managing Color in Adobe Photoshop

Click Save.

If you chose Photoshop EPS as the format, the EPS Options dialog box appears.

Specify EPS options and click OK.

• Choose a

TIFF preview option. A TIFF preview is compatible with both Windows

and Mac OS computers.

• Do not select the PostScript Color Management option. For more information about PostScript Color Management, see the following section.

• Do not select Include Transfer Function or Include Halftone Screen.

N OTE : If you choose

JPEG

encoding, save a backup of the original image saved with binary encoding until you see the printed results of the JPEG file. Occasionally, the compression used for JPEG encoding produces unwanted

artifacts

. If you see unexpected results in the printed output of a JPEG file, revert to a binary version.

If you experience problems printing the document in which you placed the image, substitute an ASCII version of the same image and reprint the document. Binary encoding is much more compact than ASCII encoding, but occasionally causes printing problems with some system configurations.

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5-43 Selecting options when printing

Selecting options when printing

You can print RGB or