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Old 02-02-2007, 01:27 PM   #1
FlipSide
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Default Drop shadows come out as white squares

hi guys,

I've got some drop shadows on some photos that are on top of a green layer. but at print instead of being transparent as expected they are coming out as white squares (ie: the black gradient is coming out but the transparency is coming out white instead of see-through)

help please!

thanks for any advice.
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Old 02-02-2007, 02:45 PM   #2
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How did you do the drop shadows--in Photoshop or in Indesign?

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Old 02-02-2007, 03:38 PM   #3
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everything in indesign. (photos were placed jpegs saved as cmyk)

thanks
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Old 02-02-2007, 04:58 PM   #4
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Not sure without seeing the file, but I've often had problems with jpegs - particularly with CMYK jpegs: I tend to convert 'em to CMYK tiffs (no compression) and play safe. Mind you, this could be a red herring!

Did you print from InDesign, does the problem appear when you create a press PDF, and did you print inkjet (or laser) or send the job to a commercial printer?

If you could upload a file showing the problem, I'll have a shufti if you like.

   
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Old 02-02-2007, 09:44 PM   #5
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That is the key here.
If printing to a non-PostScript device the box will appear.
In InDesign - turn on "Separations preview" -
does the white box disappear?
Export or Distill at High Resolution Transparency Flattener settings
then optimize to Acrobat 1.3.
You should, then, be able to print to a non-PostScript device.
If you are printing to a PostScript 3 device and are still not having success
you are having a Flattening Settings problem.

MSD
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Old 02-03-2007, 10:10 AM   #6
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Hi guys, thanks for your help & feedback!! MUCH appreaciated!

Ok, workflow that I WAS using is (cause I know my printer uses acrobat pro 8):
Indesign CS2 > export as pdf (based on PDF/X-3:2002), compatibility acrobat 7 (PDF 1.6)

NEW method (based on Wharfrats suggestions, thanks!):
Indesign CS2 > export as pdf (based on PDF/X-3:2002), compatibility acrobat 4 (PDF 1.3) and now I also convert fonts to lines, etc.

in relation to the drop shadows with InDesign, I just created them from the object dropdown menu. they look great on screen but the problem of the white boxes only appears on the printed version. (NB: the same squares are seen when I use "flatner preview" set to "all rasterised regions")

Is there any additional settings apart from exporting as acrobat 1.3 & using high res transparency flatner settings to avoid this issue?

thanks for your help guys!!!!
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Old 02-03-2007, 01:41 PM   #7
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I would only suggest converting the fonts to curves as a "last resort".
I have custom Transparency Flattener Presets set to rasterize at the resolution of the imagesetters (2538 or 2540). Then when objects interacting with transparency are rasterized they rasterize at that resoultion and I have no problems with things getting "a bit fatter".
Also, watch your Illustrator "Raster Effects Settings" and "Transparency Flattener Settings".

MSD
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Old 02-03-2007, 01:58 PM   #8
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If you see the drop shadow problem in Acrobat (with overprint preview turned on of course). the issue is with the document. If the PDF is OK, I'd like to see it please: there might be an incompatibility with the printer's RIP.

   
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Old 02-03-2007, 02:54 PM   #9
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Quote:
flipside: everything in indesign. (photos were placed jpegs saved as cmyk)
You might try doing the drop shadow in Photoshop and then placing in ID--save as jpg after--and as Robin said, many people have problems with cymy jpgs--I've never used them so can't comment...

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Old 07-01-2007, 11:28 PM   #10
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Do not do the shadow in Photoshop. This will not work. It does not support the blending.

Is the green colour a "spot" colour. If it is, then the RIP that is being used to print the job is not supporting transparency over spot colours. This is typical of a non-PDF Extreme RIP.

If the RIP is the problem, supply a separated PDF.
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