MOTTLING SENSOR
MOTTLING MEASUREMENT SENSOR
The Kheops is a laboratory sensor designed to easily provide accurate and
repeatable evaluations on:
» Quality of offset impressions, print mottling, and the quality/precision of coating application
» Paper, Board or other flat material surface roughness
The Kheops has been specifically designed for papermakers, board makers, ink
manufacturers, coating suppliers and printing operations.
User Friendly Software
The Windows software has been developed by
CTP and TECHPAP engineers in conjunction
with industrial users to be efficient in
operation, easy to use and versatile. To make
a test, the operator simply places the sample
in the system, enters the sample reference
and clicks on the area to be tested.
Kheops ­ Practical, Repeatable and Responsive
The Kheops sensor is essentially a CCD camera and two specially
designed light sources (a diffused light for print mottle analysis and a
low angle LED lamp for surface smoothness evaluations). The housing
has a small hinged door on its front side to introduce samples for testing.
The camera and lighting system is automatically adjusted to maintain a
stable sample illumination during the image capture measurement
process. The Kheops uses a PC to automatically set the camera, analyze
the images, make calculates, display the results, memorize the results
and send the results to the DCS or Data Historian.
The Kheops sensor is very sensitive to mottle or smoothness changes in
the paper. The repeatability of the system is exceptional and the results
have been closely correlated with visual tests. The final mottling index is
the result of the combination of 5 individual class size categories. These
5 class sizes can be pre­set by the operator depending on the application
requirements.
RESULTS
» Excellent correlation with human eye evaluation and sensitivity
» Excellent linearity
» Excellent repeatability
» One single number index between O (ideal sample) and > 100
» Index number is the result of 5 individual categories of class size
Minimum class: 0.5 to 1 mm
» Size and highlight of each class are selected by the operator in order of
importance
TECHPAP SAS
CS 90251 ­ 38044 Grenoble cedex 9
Tél. +33 (0)4 76 51 74 75 ­ Fax +33 (0)4 76 42 05 04
wwww.techpap.com ­ techinfo@techpap.com
» The result output includes the average print
mottle or surface smoothness plus deviation
between measurements, tolerance threshold,
class distribution and class distribution
standard deviation.
» All results are stored on the PC and can be transferred to any spreadsheet or data
historian.
» Operational icons are easy to understand and there are 6 test reference windows
plus a window for comments.
» All class size parameters, luminosity levels and formula parameters can be
adjusted and set.
MOTTLING SENSOR
Sensor
Dimensions: 14.5"x14.5"x15.75" (37x37x40 cm)
Weight: 26.5 lbs. (12 kg)
Hinged door width: 8.7" (22 cm)
Light sources:
* Diffuse light for mottle measurement
* Low angle LED light for smoothness measurement
PASSWORD PROTECTION FOR FOR USER AND ADMINISTRATOR ENTRY
INDIVIDUAL MEASUREMENT TIME IS LESS THAN 1 SECOND
Connections Supply: 220v / 50Hz or 110v / 60Hz
Power: 50 watts
Video output and regulation input
(cables delivered)
Vacuum connection and porus stone to maintain the
sample flatness for smoothness measurements.
Sample
Measurement area: 1"x1" (25x25mm)
or 0.5"x0.5" (12.5x12.5mm)
Maximum thickness of sample: 0.15" (4mm)
PC Needed
Windows 2000 or XP Pro with 1394 Cards
Kheops with Feeder
The Kheops print mottle analyzer can be combined with the 2D Lab
Formation Sensor to give a complete picture of your paper quality.
Using an auto feed, the system performs automatic control of your
paper Surface & Formation.
Special Applications:
» The New Kheops is a perfect tool to evaluate and classify the
covering quality of the bleached layer of White top board.
» Cigarette paper opacity should be high enough to prevent the
transparency, or look­through, of the sheet allowing the tobacco to
be seen through the paper. The Techpap Mottling Sensor is a
perfect tool to evaluate and classify the covering quality or look­
through of tobacco for cigarette paper.
Interpretation and Correlation of Results:
» The results provide an excellent correlation with visual inspection. In fact, the
camera is much more sensitive than what can be seen by the human eye.
» Excellent result linearity
» The repeatability of the measurement algorithm is superb.
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