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Currently Being Moderated

Pantone spot colour & Transparency don't work

Dec 19, 2012 4:41 PM

Using indesign CS5, I make a pantone solid spot colour background.

I import two of the same photos: one a greyscale circular pshop file with transparency surrounding the circle ( the file is not flattened).

The other is the same photo, but I make a clipping path around the circle and then flatten the file and save as a jpg.

Both photos are put on top of the pantone solid color background in Indesign.

I export the indesign file as pdfx 1a using pdf-presets under the file menu.

If I open the pdf in Acrobat and open the "output preview" panel and turn off the "simulate overprinting" box, the pshop photo disappears, but the jpg with the clipping path is fine. They print as they appear: one disappears (Pshop file)  and one is OK: the jpg.

If you import the pdfx 1a pdf back into Indesign, you will see that the pshop image has disappeared.

 

 

I understand this happens to others not just me. is there a fix?

Does it work with all a spot colours and transparency?

 

If I save as a higher version of acrobat (say 7). The pdf looks fine and imports back into indesign fine.

And if I send to the RIP the RIP seems to handle it fine. But if I take that Acrobat 7 file and put on a page and export as pdx-1a, I get the same problem

 
Replies
  • Currently Being Moderated
    Dec 19, 2012 6:17 PM   in reply to Bob Lag

    PDF  X/1-a is an archaic standard. Use X/4 and I assure you the results will be fine.

     

    Bob

     
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  • Rob Day
    3,123 posts
    Oct 16, 2007
    Currently Being Moderated
    Dec 20, 2012 6:48 AM   in reply to Bob Lag

    If I open the pdf in Acrobat and open the "output preview" panel and turn off the "simulate overprinting" box, the pshop photo disappears, but the jpg with the clipping path is fine. They print as they appear: one disappears (Pshop file)  and one is OK: the jpg.

     

    I assume your problem is proofing to a composite printer and not separations? I can replicate your display problem with overprint unchecked, but there's nothing wrong with separation output numbers. Do you have Simulate Overprint checked in the output tab when you print composite?

     
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  • Currently Being Moderated
    Dec 20, 2012 10:48 AM   in reply to Bob Lag

    Why are you specifying a Pantone spot color if you don't intend to use a spot plate?

     
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  • Rob Day
    3,123 posts
    Oct 16, 2007
    Currently Being Moderated
    Dec 20, 2012 11:19 AM   in reply to Bob Lag

    It looks like pdfx 4 doesn't convert rgb to cmyk, so I guess a person could begin with those settings and add "convert to destination preserve numbers" to convert RGB and keep existing cmyk the same???

     

    That would convert RGB or Lab objects to CMYK but not spot colors—you would still get a CMYK + spot document and the spot will need to be converted in the RIP.

     

    PDF/X-4 ensures all objects have a color profile, so your client could choose convert to destination and make the conversion on export, or you could convert RGB in the RIP. The results would be the same assuming you are both using the same destination CMYK profile.

     

    If for some reason you want to stay with PDF/X-1a, you could ask the client to check All Spots to Process in ID's Ink Manager before exporting X-1a.

     
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  • Currently Being Moderated
    Dec 20, 2012 2:08 PM   in reply to Bob Lag

    Instead of going through all of this hassle, may I respectfully suggest

    that you write up some strict file requirements for ad submission and if

    they aren't followed, reject the ad or charge to fix it?

     

    Bob

     
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  • Rob Day
    3,123 posts
    Oct 16, 2007
    Currently Being Moderated
    Dec 20, 2012 2:26 PM   in reply to Bob Lag

    Can you require PDF/X-4 instead of PDF/X-1a? X-4 would be better.

     
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