Xerox DocuColor 12 Printer with Fiery EX12 产品宣传页

The Pure Black Text/Graphics option can be used only when printing 

composites, not when printing separations. 

PostScript applications, such as QuarkXPress, may convert elements defined as 

RGB = 0, 0, 0 to four-color CMYK black before sending the job to the Fiery. These 
elements are not affected by the Pure Black Text/Graphics option. For details, see 
the application notes. Also, black text and line art defined as RGB = 0, 0, 0 in office 
applications (such as Microsoft Word) are converted to single-color black 
(CMYK = 0%, 0%, 0%, 100%) by the Microsoft PostScript Level 3 driver for 
Windows 2000/XP. To print this single-color black at the maximum toner density of 
the copier/printer, set the Pure Black Text/Graphics option to On. 

The Black Overprint option lets you specify whether or not black text—defined as 
RGB = 0, 0, 0, or as CMYK = 0%, 0%, 0%, 100%—overprints colored backgrounds. 

•

—Black text overprints colored backgrounds, eliminating white gaps and 

reducing halo effects or misregistration of colors. Setting Black Overprint to On 
automatically activates the Pure Black Text/Graphics option.

•

—Black text knocks out colored backgrounds.

Prints 100% black

With the default profile, prints a rich black using all 
toners.

Prints only with black toner, because CMYK 
simulations preserve the black channel. The actual 
amount of toner used depends on the current 
simulation and the calibration state of the 
copier/printer.

Prints only with black toner, because spot color 
simulations preserve the black channel. The actual 
amount of toner used depends on the current 
simulation and the calibration state of the 
copier/printer.