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.
Select
Raster
when outputting to low-resolution contone
proofers (for example, Veris digital proofer or Matchprint Inkjet
proofer).
Note: To use raster overprint handling, you must select, in the
Render
section of the process template,
Shades=256
.
Additional factors to consider:
●
Raster overprint handling can be applied only to continuous
tone data
●
Raster overprint handling occurs after the RIP
●
Raster processing time increases exponentially as the
resolution increases
●
Raster overprint handling eliminates all overprints
Select
Vector
when outputting to halftone (screen) proofers
(for example, the Spectrum device), or to high-resolution
contone proofers.
Additional factors to consider:
●
Vector overprint handling occurs before the RIP
●
Depending on the complexity of the file, vector overprint
handling could take longer than raster overprint handling.
●
Vector overprint handling does not eliminate all overprints.
In objects where overprinting does not have an effect on the
output, the objects retain an overprint status. For example, if
598
Chapter 12—Outputs
