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 ink or 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 (for pure black) to Text or Text/Graphics, Black text and graphics must be set to Pure Black
On.
Note: 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.
Color
Black text and graphics = Normal Black text and graphics = Pure Black On
or Rich Black On
RGB=0,0,0 (all other RGB
values are unaffected by Black
text and graphics)
Printed according to the definition for
RGB=0,0,0 in the output profile. This may
be a rich black (one that uses multiple
colorants) if the output profile specifies a
rich black, or K-only if the output profile
specifies K-only for RGB=0,0,0. The output
is affected by calibration.
Printed as 100% K (Pure Black On) or 100%
K plus 50% Cyan (Rich Black On) using
black and cyan.
CMYK=0%,0%,0%,100% (all
other CMYK values are
unaffected by Black text and
graphics)
Printed as K-only or as a rich black using all
colorants, depending on the CMYK source
and CMYK rendering intent settings.
If CMYK rendering intent is set to Pure
Primaries, or if CMYK source is set to Bypass
Conversion, CMYK=0%,0%,0%,100% prints
as 100% K and the amount of black is
limited by the CMYK source profile and
calibration.
If CMYK rendering intent is set to Relative
Colorimetric, CMYK=0%,0%,0%,100% is
printed as a rich black using all colorants
according to the output profile. The output
is affected by calibration.
Note: Setting CMYK source to ColorWise
OFF disables the CMYK Source profile and
calibration. In this case, the black is not
limited by calibration.
Printed as 100% K (Pure Black On) or 100%
K plus 50% Cyan (Rich Black On) using
black and cyan, regardless of the CMYK
source and CMYK rendering intent settings.
Color Printing
Color print options
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