February 2013
6-106
ColorQube® 9303 Family
GP 40
General Procedures/Information
CIE L*C*H* L* = lightness, a* = red/green, b*= yellow blue value - based on theory
that a colour cannot be red and green or yellow and blue at the same
time (most widely used colour model).
CIE XYZ Basic CIE 3 dimensional colour space. X = Red, Y = Green, Z = Blue
(based on human capabilities.)
CIG Calling Subscriber Identification
CIS Contact Image Sensor
CL Copy Lighter. A copy density setting
CLD Closed Loop Drift (CLD). CLD makes a baseline measurement each time
dc972 Option 3 Manual is run. CLD runs automatically on a schedule in
extended Idle time. The measurement is similar to Y Dot position and is
dependent on head to drum and drum size and docking of the heads.
Cleaning Page See Mud Page
Click Charge Charge by copy/print rate
CMM Colour Management Module - Software application. That performs the
conversions from one colour space to another
CMS Colour Management Systems - helps provide colour consistency via cali-
bration and colour characterization - utilizes profiles (characterizations)
for various devices (scanner, monitor and printer)
CMY Cyan / Magenta / Yellow - subtractive primary colours from RGB CMY
used by printers since they are dependant upon reflective light. Two
overlapping subtractive primary colours = R,G or B i.e. M+Y = R;
M+C=B; C+Y=G. (CMY are process primaries.) C is opposite R; M is
opposite G, Y is opposite B. Vary spot size, balance and angle to create
appearance of colours.
CMYK Cyan Magenta Yellow and Black
Cohesive Failure Ink fractures or disintegrates during deformation and heating in the trans-
fixing process. This results in part of the pixel remaining on the drum and
part transferring to the media. Cohesive failure is the loss of the internal
strength of the ink above a critical (drum) temperature.
Colour Results from interaction between light, object and viewer perception.
Consists of Hue, Saturation and Lightness.
Colour Manage-
ment
Calibration: Measure and adjust the performance of a device
Conversion: Accomplished via SW (i.e. convert RGB to CMYK)
Characterization: How the colour gamut of a devices described
Colourmeters Measure colour by imitating the eye to calculate level or RGB. Tristimulus
device. Breaks light down into its RGB components. Using one of the CIE
standards - used on monitors / light emitters.
Contone Image Format (short for continuous tone) - during RIP contones are con-
verted to halftone dots in each of the four separations.
CP Cold Purge (normal power up from cold purge)
CPM Copies per minute
CPQD Customer perceived Print Quality Defect
CPSR Capture / Print, Save and Reprint
CQ Copy Quality
Table 1 Terms, Acronyms and Abbreviations
Term Description
CRD Colour Rendering Dictionary - used to convert RGB to CMYK data during
RIP
CRU Customer Replaceable Unit
CRUM Customer Replaceable Unit Monitor
CSE Customer Service Engineer
CSMS Customer Satisfaction Management System
Customer Drivers Customer drivers are specially developed generally made with a driver
toolkit. These drivers can provide a full set of features for Xerox printers.
In the past, customers drivers have been provided for all major operating
systems. A customer print driver is costly to develop, and does not used
standard operating system components. For this reason, PPD / GPD
solutions will be used in future whenever possible.
CTC Continue To Correct
CTF Contrast Transfer Function
CTO Change Try Out - testing of changes on machine
CTR Response For Continue To Correct
CTS Clear To Send
CU Slime The accumulation of ink in the drum maintenance unit. This can build up
on the wiper blade or in the reclaim path.
CU Cleaning Unit - presently expected to last ~ 240K - DMU is most likely to
casual for side 1 gloss (low gloss = high oil) (high gloss = low oil). Clean
-
ing unit is part of the FSMA contract as a CRU. Customer has option to
return or trash it. Also known as the Drum Maintenance Unit (DMU).
CVT Constant Velocity Transport
CVU Check Valve Unit - on lower end of umbilicals - keeps air & ink from flow-
ing back into ink reservoir - but only functions fully after being primed.
Failure to prime may lead to ink in air system and reservoir r/r
CW CentreWare
CWM Continuously Weak or Missing Jet/s
CWW CentreWare Web
DAC Digital to Analog converter
DADF Duplex Automatic Document Feeder (feeds documents to a different
stack)
DADH Duplex Automatic Document Handler (feeds documents to bottom of
existing feed stack)
dB Decibel (applies to sound pressure level units)
DDB Drum Driver Board
dC Diagnostic code
DC Digital Copier
DC Device Controller, generic term for any module that acts as a image han-
dling device e.g., SIP. Digital Copier
DC Direct Current
DC + Fax Digital Copier with embedded Fax card
DCN Disconnect
Table 1 Terms, Acronyms and Abbreviations
Term Description
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