System information

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If Separate RGB/Lab to CMYK Source is turned on, Gray (RGB) is turned off. Likewise, if Gray (RGB) is
turned on, you cannot turn on Separate RGB/Lab to CMYK Source.
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If Black Text and Graphics is set to Pure Black On or Rich Black On, it takes precedence over Gray (RGB)
and Gray (CMYK) for 100% black text and graphics.
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If a gray is specified as a spot color, Gray (RGB) and Gray (CMYK) do not affect that gray.
Black Text and Graphics
The Black Text and Graphics option affects black text and vector graphics. When you set this option to Pure
Black On, the black generated by applications (RGB=0, 0, 0 or CMYK=0%, 0%, 0%, 100%) is printed using black
only.
With Black Text and Graphics set to Pure Black On, black text and line art are not misregistered, since only one
colorant is used. This setting also eliminates blasting, which is an undesirable effect that occurs when excess
amounts of toner, combined with certain types of paper stock, cause objects to spread beyond their defined
boundaries.
For some jobs, we recommend setting Black Text and Graphics to Normal. For example, if a job includes
gradient fills that use black, the Normal setting gives the best result.
If you set Black Overprint to Text or Text/Graphics, Black Text and Graphics must be set to Pure Black On.
Important: Use Black Text and Graphics only when printing composites, not separations.
The following table describes the behavior of Black Text and Graphics with black defined in different color
spaces.
Note: 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 Server. These elements are not affected by the Black Text and
Graphics option.
For more information, see Fiery Color Reference, which is part of the user documentation set.
Black Overprint
The Black Overprint option specifies whether black text, or black text and vector graphics (where black is defined
as RGB=0, 0, 0, or as CMYK=0%, 0%, 0%, 100%) print over colored backgrounds. If you turn off this option, black
text, or black text and graphics knock out colored backgrounds. Knocking out can create a white edge around
objects, or a "halo," caused by the misalignment of color plates.
The Black Overprint option has the following settings:
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Text - Black text overprints colored backgrounds, eliminating white gaps and reducing the halo effect from
misregistration of colors. You can select this setting only if the Black Text and Graphics option is set to Pure
Black On.
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Text/Graphics - Black text and graphics overprint colored backgrounds, eliminating white gaps and the halo
effect from misregistration of colors. You can select this setting only if the Black Text and Graphics option is
set to Pure Black On.
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Off - Black text and graphics knock out colored backgrounds.
Note: PostScript applications may perform their own black overprint conversions before printing.
Fiery Command WorkStation
Managing color
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