Xerox Phaser EX7750 Reference Guide

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Understanding color management systems
 
To create successful color documents and presentations, you can take advantage of the 
features of color management software as they are implemented by the Color Server 
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
 
 
 
 is a “translator” between the 
 
 
 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 
 
 
 of the printer. This information is provided 
through 
 
 
, 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 Color Server color management system, 
 
 
, 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 Color Server or a host-based 
 
 
the process of converting color data for a printer is the same: the CMS interprets 
 
 
Chapter 1:
Overview 
of Color 
Management 
Concepts