Option
Description
Version Layer Options
●
Force Overprint
check box
●
Blend Layers
check box
Use these options to quickly correct
knockout/overprint problems.
Force Overprint
check box—Select
this check box when an object on a
change layer creates a knockout in the
base layer, and where the knockout is
not the same on each version. This
check box sets all change objects to
overprint, where change objects are
objects on pages that are linked to
layers other than the base layer.
For example, if you have English and
French text printing in black over a
CMYK image on the base layer, the
text in each language must overprint;
otherwise, the base CMY plates will
have knockouts in both languages and
the black text will not fit.
Note: One hundred percent (100%)
white objects are treated differently
and may still create knockouts in some
separations.
Blend Layers
check box—Select this
check box when an “invisible” object
(an object colored with 0% ink sitting
on a blank area of the page) on a
change layer obscures or creates a
knockout in one or more of the base
layer's separations. This check box
uses the PDF Transparency feature to
blend layers and to simulate the
double burn technique of imaging data
on a plate by exposing it multiple
times. The check box makes the white
or clear areas of versioned objects
transparent, and ensures that the
colored/tinted versioned objects can
only make the area darker.
Note: If a page has text that is only
partially over an image, you may
notice, after selecting the
Blend Layers
check box, differences between
characters that are on the image and
those that are not on the image at low
resolutions such as 300 dpi. These
differences should not appear at
higher resolutions such as 1200 dpi or
if you choose the Adobe PDF Print
Engine as the RIP in the RIP Options
section of the Edit Jobs Attributes
dialog box.
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Chapter 19—Versions
