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jaysapathy`
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InDesign 5.5: Strange Printing Transparency Issues

Aug 20, 2012 2:39 PM

Tags: #problem #cs5 #error #transparency #indesign #printing

Hi guys, long time reader, first time poster. This forum has helped with a lot of problems, so thanks, and hopefully you can help with this one.

 

I'm working on a multiple-spread page for a client that is giving me some strange issues when it's printed. The document has an image as a background for the entire page, and then a black box over the image with some text on top of it. For some reason, the black box with text is letting the image underneath show through, almost as if the box is 99% transparent or something. I've checked each box individually, and there's nothing in the transparency/attributes boxes. I'm not sure how, exactly, to solve this issue -- is there some sort of universal transparent image setting (for instance, set black to 99% opacity always or something similar)?. It's the only thing I can think of.

 

InDesign CS5.5, OSX Lion. The files are a combination of TIFF and JPG images, and I get the same issue no matter what image format is underneath.

 

Any feedback is welcome here.

 
Replies
  • Currently Being Moderated
    Aug 20, 2012 2:46 PM   in reply to jaysapathy`
     
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    Aug 20, 2012 2:52 PM   in reply to jaysapathy`

    100% black overprints by default. Create a new black swatch and call it knockout black.

     

     

     

    Use that one for this purpose.

     

     

     

    Bob

     
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  • Currently Being Moderated
    Aug 20, 2012 4:19 PM   in reply to jaysapathy`

    That would be a mistake.

     

     

     

    Bob

     
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  • Currently Being Moderated
    Aug 21, 2012 9:15 AM   in reply to jaysapathy`

    Where are you seeing this? In print? On screen?

     

    If it's in print, how is being printed?

     

    Bob

     
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  • Currently Being Moderated
    Aug 21, 2012 9:54 AM   in reply to jaysapathy`

    Can you show us a screen shot of the black frame selected and the swatches and effects panels?

     
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    Aug 21, 2012 10:30 AM   in reply to jaysapathy`

    Doesn't make sense to me either.

     

    Do you see CMY values in the empty black areas when you run the cursor around in Separations Preview?

     
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  • Currently Being Moderated
    Aug 21, 2012 11:01 AM   in reply to Peter Spier

    My only thought is that the RIP is set to automatically overprint 100% black. I would have a talk with the printer about this since it shouldn't be happening.

     

    Bob

     
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    Aug 21, 2012 11:04 AM   in reply to Bob Levine

    And another thought. I would never use 100% black in that situation.

     

    I'd create a rich black since black only is likely to be rather dull when used in a large area like that.

     

    Bob

     
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  • Currently Being Moderated
    Aug 21, 2012 3:25 PM   in reply to jaysapathy`

    If seps preview is showing only 100% k it's hard to imagine this is anything but a profile conversion issue, but that doesn't make a lot of sense, either, if the density is varying with what's behind it.

     

    Any effects applied to the background image?

     
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  • Currently Being Moderated
    Aug 22, 2012 9:48 AM   in reply to jaysapathy`

    I'd love to see this file in the flesh. Are you willing to share it?

     

    I'm sending an upload link to you by private message.

     

    I have a feeling that Bob's thought about overprint setings inthe RIP might be on target...

     
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  • Currently Being Moderated
    Aug 22, 2012 10:22 AM   in reply to Peter Spier

    I’m sticking with that one for now.

     

     

     

    There’s no other option that I can think of at this point and I really think using a rich black would cure this since that wouldn’t set off the overprint setting anywhere.

     

     

     

    Bob

     
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  • Currently Being Moderated
    Aug 22, 2012 10:29 AM   in reply to jaysapathy`

    Can you make a copy with just one page?

     
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    Aug 22, 2012 10:55 AM   in reply to Peter Spier

    Then it really sounds like that frame is set to overprint. Can’t remember if you showed up a screenshot with the frame selected. I recall seeing one with the text frame but not the background.

     

     

     

    Bob

     
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  • Rob Day
    3,123 posts
    Oct 16, 2007
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    Aug 22, 2012 1:47 PM   in reply to jaysapathy`

    I tried the rich black path once more, only to have it have the same issue. It's almost like the black is being told to be slightly transparent, and I can't find the setting for that particular box.

     

    What's your rich black mix? Something like 40|0|0|100 wouldn't work– you need at least 1% in all 3 CMY channels. Here's 40|0|0|100 set to overprint top, and KO bottom:

     

    Screen shot 2012-08-22 at 4.42.59 PM.png

     
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