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Duotone preview problem in PDF - Adobe Acrobat Macintosh

I am having trouble displaying a Duotone in its Pantone seperation. The Pantone 300C sep just appears black when viewed in Acrobat 6. If i knock it to process in the seperation preview it displays as it should in blue and black. Any one any clues? Thanks in advance. Johny...

  1. #1

    Default Duotone preview problem in PDF

    I am having trouble displaying a Duotone in its Pantone seperation. The Pantone 300C sep just appears black when viewed in Acrobat 6. If i knock it to process in the seperation preview it displays as it should in blue and black.

    Any one any clues?

    Thanks in advance.
    Johny
    Johny_Harris@adobeforums.com Guest

  2. #2

    Default Re: Duotone preview problem in PDF

    This is normal. A spot color is a single ink color and will only show its CMYK values if you convert it to process. Also if you only have a single ink turned on in the seps preview it will preview in black.
    Gary_A.@adobeforums.com Guest

  3. #3

    Default Re: Duotone preview problem in PDF

    Thanks Gary for your reply.

    I understand that a spot colour is single ink, seperate to process. But if I have a 5 colour job with, for example the 5th colour being some text coloured up in a spot blue, the text appears blue. But if I put the Duotone image in there the text appears black. Its as if the Duotone is overiding the colour preview.
    Johny_Harris@adobeforums.com Guest

  4. #4

    Default Re: Duotone preview problem in PDF

    Hmmm. I haven't seen that. Do you have someplace public you can post the file?
    Gary_A.@adobeforums.com Guest

  5. #5

    Default Re: Duotone preview problem in PDF

    I don't I'm afraid. I have just discovered something however. If I preview the PDF in Acrobat Reader or Preview in Max OS X it displays fine, in colour. Its just when I open it in Acrobat 6 that its decides to display it in black.

    We have Pitstop installed as a plug in on this machine, could that have something to do with it?
    Johny_Harris@adobeforums.com Guest

  6. #6

    Default Re: Duotone preview problem in PDF

    This would not have anything to do with Enfocus Pitstop.

    One question - do you create the PDF from InDesign? I only ask since the
    'simulate overprint' option can give the opposite effect when the
    'overprint preview' is turned ON in Acrobat 6 Professional ... and
    normal Readers can view the file OK ...

    Jon
    Jon_Bessant@adobeforums.com Guest

  7. #7

    Default Re: Duotone preview problem in PDF

    Jon many thanks!

    The postcript had come from Quark and then distilled, but all I had to do was knock overprint preview off in Acrobat 6 Pro and the whole seperation display in colour. Seems the overprint preview doesn't really work as it should?

    Thanks again guys for your help.

    Johny
    Johny_Harris@adobeforums.com Guest

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