images, the trapper must trace the outline of all of the
nonwhite pixels to create vectors to use as traps.
Ignore Complex Bitmaps
Converts and traps colorized bitmap images except for
too-complex bitmaps. Complexity is determined by an
estimate of how long it would take to create vector
outlines for a given bitmap.
Ignore All Bitmaps
Does not trap any bitmap images. Tags all bitmaps and
masked images as complex bitmaps.
Any bitmaps tagged as complex bitmaps can be trapped
manually using the Prinergy PDF Trap Editor software.
Copydot images are ignored for trapping.
Trap Resolution
Reduces file size by resampling any image data in the trap area
to a lower resolution.
Range: 10 to 10,000 dpi
Recommended setting:
100 dpi
Trap
Prinergy can create a trap when the file meets all of the following
conditions:
●
The difference between two separations, relative to the lower of the
two, exceeds the value in the
Relative Step Limit
box in opposite
directions.
●
The sum of common neutral densities for all separations is less than
the value in the
Common Density Limit
box.
●
The absolute difference in the amount of colorants between two
objects is greater than the
Minimum Absolute Step Limit
.
Step Limit
Determines whether a trap will be generated between adjacent
colors (objects) depending on the relative difference (in %) in
their amounts of colorants (inks). If the relative difference in
amounts of colorants between two objects is less than the
relative step limit specified, then no traps are generated.
The
Color Settings
section lets you override this setting for
specific colors.
A setting of 100 disables trapping.
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Chapter 10—Refining
