Oki C9800hdn User manual

2Copyright
Color Reference Guide for C9800 - 2
C OPYRIGHT
C9800 Color Reference Guide
P/N 59374601, Revision 1.0
May 13, 2005
Every effort has been made to ensure that the information in this document is complete, accurate, and up-to-date. Oki assumes
no responsibility for the results of errors beyond its control. Oki also cannot guarantee that changes in software and equipment
made by other manufacturers and referred to in this guide will not affect the applicability of the information in it. Mention of
software products manufactured by other companies does not necessarily constitute endorsement by Oki.
While all reasonable efforts have been made to make this document as accurate and helpful as possible, we make no warranty
of any kind, expressed or implied, as to the accuracy or completeness of the information contained herein.
The most up-to-date drivers and manuals are available from the Oki web site:
http://www.okidata.com and http://my.okidata.com
Copyright © 2005 Oki Data Americas, Inc.

Contents
Color Reference Guide for C9800 - 3
Introduction
About this guide 11
For additional information 11
Chapter 1: Overview of Color Management Concepts
Understanding color management systems 1-12
How color management works 1-12
Using ColorWise and application color management 1-14
Using ColorWise color management tools 1-15
Chapter 2: Using Color Management Workflows
Understanding workflows 2-16
Standard recommended workflow 2-18
Choosing colors 2-19
Understanding color models 2-20
Optimizing for output type 2-21
Maintaining color accuracy 2-22
Chapter 3: Managing Color in Office Applications
Using office applications 3-23
Using color matching tools with office applications 3-24
Working with office applications 3-24
Defining color 3-24
Working with imported files 3-25
Selecting options when printing 3-25
Output profiles 3-26
Ensuring color accuracy when you save a file 3-26

4Contents
Color Reference Guide for C9800 - 4
Chapter 4: Managing Color in PostScript Applications
Working with PostScript applications 4-27
Using color matching tools with PostScript applications 4-28
Using swatch color matching tools 4-28
Using the CMYK Color Reference 4-29
Using the PANTONE reference 4-29
Defining colors 4-31
Working with imported images 4-33
Using CMYK simulations 4-34
Using application-defined halftone screens 4-34
Ensuring color accuracy when you save a file 4-35
Chapter 5: Managing Color in Adobe Photoshop
Specifying color settings 5-36
Configuring Photoshop color settings 5-36
Saving files from Photoshop 5-40
Choosing a file format 5-40
Selecting options when printing 5-43
Advanced tips for using PostScript color management 5-46
Chapter 6: Managing Color in Page Layout Applications
Adobe InDesign 2.0.1 and 1.5.2 6-49
InDesign color settings 6-49
Importing images 6-51
Selecting options when printing 6-53
Adobe PageMaker 7.x and 6.5 for Mac OS and Windows 6-58
Windows version requirement 6-58
PageMaker color settings 6-58
Importing images 6-59
Selecting options when printing 6-59
Using optional Color Management from PageMaker 6-60

5Contents
Color Reference Guide for C9800 - 5
QuarkXPress 5.x and 4.x for Mac OS 6-60
Importing images 6-60
Selecting options when printing 6-61
Optional Color Management from QuarkXPress 6-61
Windows version requirement 6-62
Importing images 6-62
Selecting options when printing 6-62
Chapter 7: Managing Color in Illustration Applications
Adobe Illustrator for Windows and Mac OS 7-64
Note about color models in Adobe Illustrator 7-64
Illustrator color settings 7-64
Specifying print options 7-65
Saving files for importing into other documents 7-67
Specifying print options 7-67
Using Illustrator color management 7-71
FreeHand 10.x, 9.x, and 8.x for Windows and Mac OS 7-71
Setting FreeHand color settings 7-71
Defining colors 7-72
Importing images 7-73
Saving files for importing into other documents 7-73
Selecting options when printing 7-74
Optional color management in FreeHand 7-75
CorelDRAW for Windows and Mac OS 7-76
Defining colors 7-76
Importing images 7-76
Saving files for importing into other documents 7-76
Specifying print options 7-77
Optional color management in CorelDRAW 7-78
Appendix 8: Desktop Color Primer
The properties of color 8-79
The physics of color 8-79

6Contents
Color Reference Guide for C9800 - 6
CIE color model 8-81
Hue, saturation, and brightness 8-82
Additive and subtractive color systems 8-83
Understanding color gamut 8-86
Printing techniques 8-87
Halftone and continuous tone devices 8-87
Using color effectively 8-88
A few rules of thumb 8-88
Color wheel 8-89
Color and text 8-92
Raster images and vector graphics 8-93
Optimizing files for processing and printing 8-94
Resolution of raster images 8-94
Scaling 8-96
Glossary 97
Bibliography 105
Index 106

Color Reference Guide for C9800 - 7
Copyright © 2004 Electronics for Imaging, Inc. All rights reserved.
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.
This publication is provided in conjunction with an EFI product (the “Product”) which contains EFI software (the “Software”). The Software is furnished under
license and may only be used or copied in accordance with the terms of the Software license set forth below.
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.
Trademarks
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.
AutoCal, Digital StoreFront, DocStream, Fiery Link, FreeForm, Hagen, Intelligent Device Management, Logic, OneFlow, PrintFlow, PrintMe, PrintSmith Site,
PrintSmith, PSI Flexo, PSI, SendMe, Splash, VisualCal, the EFI logo, Essential to Print are trademarks of Electronics for Imaging, Inc. Best, the Best logo,
Colorproof, PhotoXposure, Remoteproof, and Screenproof are trademarks of Best GmbH.
All other terms and product names may be trademarks or registered trademarks of their respective owners, and are hereby acknowledged.
Legal Notices
APPLE COMPUTER, INC. (“APPLE”) MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE. APPLE DOES
NOT WARRANT, GUARANTEE, OR MAKE ANY REPRESENTATIONS REGARDING THE USE OR THE RESULTS OF THE USE OF THE APPLE
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PANTONE® Colors displayed in the software application or in the user documentation may not match PANTONE-identified standards.þ Consult current
PANTONE Color Publications for accurate color. PANTONE® and other Pantone, Inc. trademarks are the property of Pantone, Inc.þ © Pantone, Inc., 2004.
Pantone, Inc. is the copyright owner of color data and/or software which are licensed to Electronics for Imaging, Inc.,þto distribute for use only in combination
with the products, or software of Electronics for Imaging, Inc. þPANTONE Color Data and/or Software shall not be copied onto another disk or into memory
except as part of the delivery of the Electronics for Imaging, Inc., products or software.

Color Reference Guide for C9800 - 8
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
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Reorient or relocate the receiving antenna.
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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 - 9
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Color Reference Guide for C9800 - 10
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11 About this guide
Color Reference Guide for C9800 - 11
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.
Introduction

1
1-12 Understanding color management systems
Color Reference Guide for C9800 - 12
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
Chapter 1:
Overview
of Color
Management
Concepts

1
1-13 Understanding color management systems
Color Reference Guide for C9800 - 13
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.
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.
Input data Printed data or file
Colormanagementsystem
Device-independent
color space
Source
profile
Output
profile

1
1-14 Overview of Color Management Concepts
Color Reference Guide for C9800 - 14
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.

1
1-15 Using ColorWise and application color management
Color Reference Guide for C9800 - 15
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.

2
2-16 Understanding workflows
Color Reference Guide for C9800 - 16
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.
NOTE: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.
Chapter 2:
Using Color
Management
Workflows

2
2-17 Understanding workflows
Color Reference Guide for C9800 - 17
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).
Select file format based on the desired output. EPS data is
not manipulated.
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.
Calibration
Device maintenance
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.
R
GB
CM
YK
DOCUMENT
Spot
SAVE AS (File Format)
EPS recommended
PRINT
Set ColorWise print options
Color Server
Best output

2
2-18 Using Color Management Workflows
Color Reference Guide for C9800 - 18
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.

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2-19 Choosing colors
Color Reference Guide for C9800 - 19
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.

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2-20 Using Color Management Workflows
Color Reference Guide for C9800 - 20
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.
•CMYK colors are what most printers use.
•Spot colors, such as PANTONE, are special inks manufactured to run on an offset
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 or 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.