Oki CX3641 MFP Use and care manual

EFI Fiery Color Printing Technical Reference
Part Number: 59308806, Rev. 1.0
15 March 2008

CONTENTS 3
CONTENTS
INTRODUCTION 7
Terminology and conventions 7
About this document 8
Key features of ColorWise 8
COLORWISE PRO TOOLS 10
About this chapter 10
Setting up ColorWise Pro Tools on a Windows computer 11
Installing ColorWise Pro Tools 11
Installing the ICC profiles 11
Configuring the connection 13
Editing the configuration 14
Setting up ColorWise Pro Tools on a Mac OS computer 16
Installing ColorWise Pro Tools on a Mac OS computer 16
Installing the ColorSync profiles 16
Configuring the connection 17
Editing the configuration 19
Using ColorWise Pro Tools 20
Using Calibrator 20
Using Color Editor 20
Using Profile Manager 25
Using Spot-On 30
Using Color Setup 30
CALIBRATION 33
About this chapter 33
CONTENTS

CONTENTS 4
Calibrating with ColorWise Pro Tools Calibrator 34
Starting Calibrator 34
Expert mode 36
Applying measurements to multiple calibration sets 37
Restoring default calibration measurements 37
Calibrating with ColorCal 38
Calibrating with the DTP32 or DTP32 Series II 41
Calibrating with the DTP41 43
Calibrating with the ED-100 46
Calibrating with the ES-1000 49
Calibrating from the copier/printer touch panel 51
Calibrating with ColorCal 52
Calibrating with VisualCal 54
Understanding calibration 56
An overview of calibration 56
How calibration works 56
Scheduling calibration 58
Checking calibration status 58
SPOT-ON59
Using Spot-On 59
Starting Spot-On 60
Spot-On main window 61
Working with existing colors 62
Creating custom colors 63
Downloading custom color groups 64
Uploading custom color groups 65
Editing color values 65
Using a measurement instrument to target colors 70
Reverting default colors to factory settings 71
Saving changes and exiting Spot-On 71

CONTENTS 5
Spot-On with Substitute Colors 72
Creating a color for substitution 72
Defining the color values for a substitute color 74
Printing a job with a substitute color 76
Substitute Color dialog box 77
Principles for Substitute Colors 78
Uploading and downloading a substitute color group 81
COLORWISE PRINT OPTIONS 82
About this chapter 82
Managing color on the CX3641MFP 83
ColorWise print options 84
Auto Trapping 84
Black Detection 84
Black Overprint 85
Black Text/Graphics 86
CMYK Simulation Profile 87
CMYK Simulation Method 88
Combine Separations 89
Composite Overprint 90
Output Profile 91
Print Gray using Black Only 91
Rendering Styles 92
RGB Separation 92
RGB Source Profile 93
Spot Color Matching 94
Substitute Colors 95
Printer drivers and print options 96
Setting print options for Windows 96
Setting color management print options for Mac OS 97
Using Expert Color Settings to enable Device Link Profiles 99

CONTENTS 6
IMPORTING DENSITY MEASUREMENTS 101
Simple ASCII Import File Format 101
Example of 1D Status T density for EFI 21 patch page 102
Example of 1D Status T density for EFI 34 patch page 102
Example of 1D Status T density for an arbitrary page 103
INDEX 104

INTRODUCTION 7
INTRODUCTION
This document explains how to manage color output on the CX3641MFP and provides
information about calibration and color profiles.
This document is part of a set of documentation that includes documentation for users
and system administrators. For a complete description of your CX3641MFP, see the other
documentation available at your site.
Terminology and conventions
This document uses the following terminology and conventions.
Term or convention Refers to
Command WorkStation Command WorkStation, Windows Edition and
Command WorkStation, Macintosh Edition
Mac OS Apple Mac OS X
Titles in italics Other documents in this set
Windows Microsoft Windows 2000, Windows XP, Windows Server 2003
Topics for which additional information is available by starting
Help in the software
Tips and information
Important information
Important information about issues that can result in physical
harm to you or others

INTRODUCTION 8
About this document
This document is organized to supply you with key information about managing the color
output of your CX3641MFP.
This document covers the following topics:
• Installing and configuring ColorWise Pro Tools
• Using Color Editor, Profile Manager, and Color Setup
• Overview of calibration and description of how to calibrate the CX3641MFP using
various ColorWise Pro Tools Calibrator methods
• Using Spot-On to manage spot colors
• Setting ColorWise print options from Windows and Mac OS computers
• Descriptions of Simple ASCII File Format (SAIFF), which can be used to import toner
density measurements from measurement devices
NOTE: The Glossary defines words in bold, for example, output profile, that appear
throughout this document. Color terms and concepts, such as “color space,” “spot color,”
“gamut,” and “source profile,” are used throughout this document. If you are new to
desktop color, or if any terms are unfamiliar, see the Glossary.
Key features of ColorWise
ColorWise is the color management system (CMS) built into the CX3641MFP and
designed to provide both casual and expert users with the best color output for a variety
of purposes. The ColorWise default settings provide high-quality, out-of-box color from
many Windows and Mac OS applications. This allows casual users to achieve quality
output without knowing about or changing any color settings on the CX3641MFP.
For consistent color, calibrate the CX3641MFP on a regular basis. ColorWise Pro Tools
includes an easy-to-use calibrator, which allows you to calibrate using either the scanning
unit that is part of the copier/printer or an optional spectrophotometer or densitometer
(see “Calibration” on page 33).
ColorWise features allow you to modify printing results. Depending on your particular
needs, you can:
• Set the behavior of CMYK printing to emulate DIC, Euroscale, SWOP, and other
offset press standards.
• Match PANTONE and other spot colors for the best match when printing using
four-color press conditions or presses with extra, custom plates.

INTRODUCTION 9
• Select a color rendering dictionary (CRD), also called a rendering style, for RGB
printing. CRDs allow for rich, saturated printing of presentation graphics, smooth,
accurate printing of photographs, and relative or absolute colorimetric rendering for
specialized needs.
• Define the source of incoming RGB color data for better color conversion of RGB data
with no source information.
• Determine whether RGB data is converted into the full gamut of the copier/printer or is
first converted into the gamut of another device, such as a press standard. This feature
is useful for making one device behave like another for RGB data. It also allows you to
evaluate the appearance of an RGB file under different printing conditions without
having to convert the RGB file to CMYK first.
ColorWise color management (ColorWise) offers an open color architecture, allowing
users to customize the CX3641MFP to meet new printing needs as they arise. ColorWise
supports ICC profiles, which are industry standard color profiles that describe the color
behavior of a device. Note that ICC specification version 4 profiles (profile version
4.2.0.0) are supported as well as version 2. Downloading ICC profiles to the CX3641MFP
enables the CX3641MFP to simulate a custom press (or another copier/printer), as well as
accurately print colors from a particular monitor or scanner. In addition, you can create
customized ICC profiles for the copier/printer.
ColorWise also allows you to use any Status T densitometer by importing data in a
standard file format (see “Importing Density Measurements” on page 101). In this case, it
is important to note that the quality of the instrument used determines the quality of the
calibration.

COLORWISE PRO TOOLS 10
COLORWISE PRO TOOLS
The ColorWise default settings provide high-quality out-of-box color from many
Windows and Mac OS applications. This allows casual users to achieve quality output
without knowing about or changing color settings on the CX3641MFP. The ColorWise
color management system (CMS) also allows expert users to obtain the best color output.
ColorWise Pro Tools allows users to customize settings to achieve the best output for a
variety of purposes.
Designed to give flexible control of color printing, ColorWise Pro Tools includes the
following color management tools:
• Calibrator (calibrate the CX3641MFP in various ways)
• Color Editor (customize simulation and output profiles)
• Profile Manager (manage profiles)
• Spot-On (define CMYK equivalents for spot colors)
Spot-On is offered as an option.
• Color Setup (set defaults for ColorWise print options)
About this chapter
This chapter describes the procedures for installing, configuring, and using ColorWise Pro
Tools on Windows and Mac OS computers.
Platform To do this See
Windows Install ColorWise Pro Tools page 11
Install the ICC profiles page 11
Configure the connection page 13
Modify the configuration page 14
Mac OS Install ColorWise Pro Tools page 16
Install the ColorSync profiles page 16
Configure the connection page 17
Modify the configuration page 19