Xerox DocuColor 12 Printer with Fiery EX12 Folheto

Most applications used for illustration, pixel 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 process colors (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 

RGB, HSB, HSL, 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 the 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 can 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.