ORIS PDF Tuner Version 4.4.8 User Manual - image2output - Support

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Set grayscale images to overprint
Importing PDF and PostScript Files
‘Check’ Tab
Enable this option to set all grayscale images to transparent in cyan,
magenta and yellow so that all background colors except black show
through. This includes images which were not set to overprint in the DTP
program that created the PS/PDF file and is independent of whether or
not you have enabled the USE OVERPRINT COMMANDS option.
Note:
The background black will be added to all grayscale images if this option
and the COMPLEX TRANSPARENCY FOR OVERPRINTING GRAYSCALE IMAGES
option are both enabled.
‘Check’ Tab
Apply overprint also to grayscale tints
Enable this option if grayscale tints in a PDF or PS file which are defined
in the so-called devicegray color space should overprint, if they are set
to overprint in the PDF/PS file.
According to the PDF/PS specification, transparency for tints defined in
the grayscale color space is not allowed. Adobe RIPs comply with this
specification and do not overprint in this case. Harlequin RIP does not
comply with this specification and overprints. By enabling this parameter
you simulate the behavior of a Harlequin RIP.
Ignore overprint for process colors in PS files
If this option is enabled, overprint settings made to process colors in
PostScript files will be ignored, i.e. the process colors will knock out.
Apply overprint to ICC-based CMYK tints
Usually overprinting in PDF files is restricted to elements defined in the
CMYK color space. If this option is enabled, however, tints defined by
ICC profiles can also be set to overprint, provided that this does not
produce any significant color change. Thus the results will be identical to
those achieved with Adobe Acrobat.
Use this tab to specify criteria for inspecting the PDF/EPS/PS files being
processed (see page 2-14). There are additional options in a dialog that
can be opened by clicking the MORE button.
Depending on the software product used, the following occurs if a document
fails to meet one or more of the specified requirements:
ORIS PDF Tuner Version 4.4.8 User Manual 2-13
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