Xerox DocuColor 2045 Programming manual

May 2003
701P40210
Xerox Document Services Platform
Color Management
Guide

Xerox Corporation
Global Knowledge and Language Services
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Building 845-17S
Webster, New York 14580
USA
Copyright 2003
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This product includes software developed by the Apache Software Foundation (http://www.apache.org/).”
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While the information in this Guide is correct at the time of this publication, Xerox reserves the right at any
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and technical updates will be added in subsequent editions.

Color Management Guide i
Table of contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Multiple print engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Related documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2. DocuSP color management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Queue overrides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Color workflows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Color path charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
ICC standard path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Xerox enhanced path . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
CMYK Native path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Fast Reprint path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
PANTONE® path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Color Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Associations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
New Stock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Assign profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
New color group (stock group) . . . . . . . . . . . . . . . . . . . . . 2-6
Color profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
User TRCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Color tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Print engine specific mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Xerox consistent color mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Custom color mode (default) . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Color adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Image quality tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Expert color . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Print as grayscale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Spot color editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
OPI (Open PrePress Interface) . . . . . . . . . . . . . . . . . . . . . . . . 2-13
DRIs (Display Resolution Images) . . . . . . . . . . . . . . . . . . . . . . 2-13
3. Stock Management and Calibration. . . . . . . . . . . . . . . . . . . . . . . .3-1

Table of contents
ii Color Management Guide
Characterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Tips for use of Xerox Qualified Stocks . . . . . . . . . . . . . . . . . . . . 3-3
Calibration process overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Calibrating the DocuColor 2045/2060/6060 family . . . . . . . . . . . 3-4
Calibrating the DocuColor iGen3 . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Calibration target tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Stock Management hints and tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
General Stock Workflow Setups . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Unspecified Stock Name Model Setup . . . . . . . . . . . . . . 3-7
Three Stock Model Setup . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Custom and Colored Stock hints . . . . . . . . . . . . . . . . . . . . . . . 3-11
4. Using color tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Using Custom color mode (default) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Basic color tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Image quality tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
User Tonal Reproduction Curves (TRCs) . . . . . . . . . . . . . . . . . . 4-4
Expert color tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Spot Color Editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Understanding the Spot Color Editor window . . . . . . . . 4-10
Open PrePress Interface (OPI) . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Using Print Engine Specific mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Using XCC (Xerox Consistent Color) mode . . . . . . . . . . . . . . . . . . . . 4-13
5. Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Image paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Things to remember . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
A. System Specified defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
B. Glossary Of Color Management Terms . . . . . . . . . . . . . . . . . . . . .B-1

Color Management Guide 1-1
1. Introduction
This guide is a reference to the DocuSP controller color
management features. The DocuSP controller serves as the
digital front end for preparing and processing jobs to print on
Xerox color print engines.
The DocuSP operator uses the information in this guide to
enhance the use of the color management tools to achieve
quality color output.
Assumptions
This guide assumes that the DocuSP operator is familiar with the
DocuSP controller and the attached print engine, and is also
familiar with color printing.
Refer to the DocuSP on-line help system for procedures on how
to use the DocuSP color tools.
Multiple print engines
The DocuSP controller includes color management tools for the
DocuColor 2045/2060/6060 and iGen3 Digital Production
Presses.
This guide provides general color management information for
the DocuSP controller; also, printer-specific information is noted
where necessary.
About this guide
Before you read in this guide, become familiar with its contents
and conventions.

Introduction
1-2 Color Management Guide
Conventions
This guide includes the following conventions:
• Angle brackets: Variable information that is displayed on your
window or that can be entered as part of a command line is
enclosed within angle brackets. Examples include "Unable to
copy <filename>;" “set –p <printer>.”
• Square brackets: Square brackets are used for the following:
– Names of menu options that you select; for example,
[Printer Default]
– Names of buttons that you select; for example, [OK] and
[Cancel]
– Names of text boxes, list boxes, and fields; for example,
"the [From] text box," "the [Directories] list box," “the
[Color Source] field”
• Bold: Boldface type is used for the following:
– Directory paths; for example, “Browse to the Color
profiles directory.”
– Text that you enter; for example, "Enter purple or Xerox."
– Calling attention to text that is particularly important; for
example, “Select [Stop] on the user interface window. Do
not press the red stop button on the controller.”
– Introductory words or phrases that begin items in a list; for
example,
[Hold job]: The document is held at the printer...
[Cancel job]: The document is not printed...
• Note: Notes are hints that help you perform a task or
understand the text. Notes are presented in italics, in
separate paragraphs. Example:
NOTE: You cannot submit a job unless the printer is
connected to your workstation.
Related documentation
Further information on the specific Xerox print engines or the
DocuSP controller may be obtained by referring to the
documentation that was delivered with the elements of the
system.

Introduction
Color Management Guide 1-3
Customer Support
For service and software support, dial 1-800-821-2797. This
number is enabled for TTY bridges. To reach Xerox
Documentation and Software Services, dial 1-800-327-9753.

Introduction
1-4 Color Management Guide

Color Management Guide 2-1
2. DocuSP color management
Color management is a process of attempting to match colors
across input (scanners, digital cameras), display (computer
monitors), and output devices (color printers).
Hardware devices such as Spectrophotometers for calibration
and software tools such as color profiles, tone reproduction
curves (TRCs) and color tools are used to match or adjust color
to achieve a quality color image.
Spectrophotometers are used to calibrate data for the print
engine. Calibration data is used to adjust color balance for stock
by halftone.
Color management software converts RGB and CMYK input
color profiles to the color gamut of a specific output device.
DocuSP supports the traditional CMYK workflow as well as the
ICC Profile workflow.
TRCs and other color tools allow you to make custom color
adjustments, fine tuning the color image.
DocuSP provides the software color management tools you can
use to produce quality color output.
Refer to the DocuSP on-line help system for detailed information
and step-by-step usage procedures for all tools and processes
presented in this guide.
Queue overrides
An override can be set for many of the queue properties in
Queue Manager. A selected override property is applied to all
jobs submitted to that queue, regardless of job or job ticket
settings.

DocuSP color management
2-2 Color Management Guide
Color workflows
A color image follows a path as it is converted from an input color
profile to the output CMYK of the print engine. Factors that
determine the path are:
• the characteristics and type of the input profile
• conversions needed for the output profile of the print engine
• enhancements made by you, the user
Color path charts
Jobs take one of five paths through the DocuSP controller.
Whenever possible, you should use the Xerox Enhanced Path
which provides the highest quality color for incoming SWOP™
CMYK color and faster RIP speed.
The color path chart (see Figure 2-1. Simplified DocuSP Color
Workflow) displays the paths different documents take as they
move through the DocuSP color management system and are
processed for print.
The paths are:
• ICC Standard Path
• Xerox Enhanced Path
• CMYK Native Path
• Fast Reprint Path
• PANTONE® Path