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I cannot reproduce your issue. I've got Acrobat X and Acrobat Reader X displaying the overprinted square as green as expected. In case this may help you, Acrobat Reader use overprint preview only with PDF/X by default. You can change the default so as to enable overprint preview for all PDF versions in Acrobat display preferences. |
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overprint-screenshot-acrobat.gif (16,974 bytes) |
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Hello jghali, here you get the PDF out of my system and what Acrobat 8 says about the output. Scriber |
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Your PDF shows the overprinted square as green as expected: - in Acrobat Reader 7 provided overprint preview is enabled in prefs - in Acrobat Reader X provided overprint preview is enabled in prefs for all PDF versions - in Acrobat X Pro if overprint preview is enabled for all PDF versions or in Output Preview mode if overprint preview is enabled in the dialog. According to your screenshot, Acrobat 8 does not seem to have that overprint preview button Acrobat X has in its Output Preview dialog. So I suspect the activation of overprint preview in Acrobat 8 depends on display preferences and PDF version. So please check Acrobat display preferences and set use of overprint preview option to "always" or "automatically". |
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Overprint preview is activated in Reader 8 and Acrobat 8, and other PDF files with overprinting are displayed correctly (same file, not exported by Scribus but printed via FreePDF shows green). So the function is on. And: the Acrobat output preview says the same (only 100% yellow). When I export as PDF 1.3, I get the same error, no green, in both programs. |
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Could you upload the FreePDF output so I can look how FreePDF does it? From my tests, it looks like an Acrobat 8 issue. In all other versions, the overprinted square is displayed green. |
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"overprint-from-freepdf-4.14.pdf" ist made with the "High Quality" profile (Ghostscript PDF quality "prepress"). |
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Confirming this is a bug a Acrobat 8. It fails to use "extended graphic state" resources at the top of the page tree, resources which contains the overprinting information: - this is a failure to respect point 3.7.2 of PDF 1.7 specifications : "(Since a page’s Resources attribute is inheritable, as described under “Inheritance of Page Attributes” on page 149, it may actually reside in some ancestor node of the page object.) - this is a regression vs Acrobat 7 which was fixed in Acrobat 9. [Edit] : the same wording exists also in point 3.7.2 of PDF 1.3 and PDF 1.4 specs. |
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Ha! Adobe ignored its own standards? So if I don't want to buy a newer Acrobat, I could simply ignore the wrong values? Thank you! |
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jghali, then we should bill this as a known issue to avoid future reports? |
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Closing as the problem originates from Acrobat 8. |
- Anonymous
