Select
Saturation
to make sure colors are represented in a way
that preserves or emphasizes saturation during final output.
Retain CMYK Black
Preserves black in images and graphics that are defined in
CMYK or RGB color space. For ICC-based color matching
engines, CMYK images and graphics get transformed from
CMYK to L*a*b* and back to CMYK color in order to perform
color matching. In going from CMYK (four components) to
L*a*b* (three components) and back again, the black (K)
channel separation information (UCR/GCR) has in the past
been destroyed. Selecting this check box instructs the Color
Matcher to preserve the black generation information from the
source color space. As a result, the amount of black relative to
CMY in the images and graphics stays about the same. The
purpose of this feature is to help preserve the visual weight of
images and graphics.
Note: When you enable this feature, Color Matcher requires some
additional processing time because of the extra calculations involved.
Overprint Handling (CPU Intensive)
(See
on page
Select to prevent overprinting objects from generating
unintended knockouts.
If you are converting spots to process for a proof, or if you are
color-matching one CMYK space to another CMYK space for a
proof, you probably need to apply overprint handling, even if
you applied it during refine.
To use overprint handling, you must:
1. In the
ColorConvert
section, select:
●
The
Color Matcher
JTP
●
The
Match Colors in Page Content
check box
●
The
Overprint Handling
check box
2. Choose between raster and vector overprint handling in the
Methods
list.
Note: The raster option is available only when
Shades=256
is
selected in the
Render
section of the process template.
Method
Choose to use vector or raster overprint handling for this output
process.
680
Chapter 12—Outputs
