Xerox Phaser EX7750 Reference Guide

This chapter provides guidelines for using applications that have the ability to write 
their own 

, such as some page layout, illustration, and pixel-editing 

applications. For information about using specific applications, see 

Most applications used for illustration, 

 editing, and page layout can create the 

PostScript information they send to a PostScript printer or save in PostScript files. 
Illustrator, Photoshop, PageMaker, QuarkXPress, and Macromedia FreeHand are 
all PostScript applications.

PostScript applications work with color in many different ways. Most allow you to 
choose 

 (by entering percentages for cyan, magenta, yellow, and black), 

as well as 

 from a spot color system, such as PANTONE. When you 

print composites, these applications send process-color equivalents for named 

 to the Color Server. In some applications, you can also choose colors using the 

, or other color models.

Generally, PostScript applications send color information to the Color Server as 
CMYK data. An exception to this is an RGB image placed in a document, which is 
sent directly to the Color Server (unless you specify special color management settings 
in the application). In addition, some PostScript applications that allow you to define 
colors in RGB or other color models also send data to the Color Server in those color 
spaces.

Color controls in PostScript applications are typically designed for printing on an 
offset press, and some adjustments are required for printing to the Color Server. 
Displayed versions of colors you choose in these applications may not match Color 
Server output exactly, and named colors may not print accurately on the Color Server, 
since these colors typically require custom inks. 

Chapter 4:
Managing Color 
in PostScript 
Applications