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Color separation problems

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kristen weber

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Apr 30, 2003, 5:16:32 PM4/30/03
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I have a two-color InDesign job (black plus a spot color)that refuses to separate properly. My duotone images (which are EPS files developed in Photoshop and saved as multi-channel according to your previous postings) print to the black plate only. My charts (which were created in ID and are the spot color with a radial gradation) also print on the black plate only. The rest of the document separates beautifully. I'm a relatively new InDesign user, so I'm sure there's an easy answer, but I have no idea what it is! Thanks!

John Kallios

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Apr 30, 2003, 5:43:01 PM4/30/03
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My duotone images (which are EPS files developed in Photoshop and saved
as multi-channel according to your previous postings)


By duotone, I am asuming you mean a 2 channel image since the mode is multi-channel. This does not work unless saving as a dcs2 image.

Option 1: Convert to duotone and save as an eps file.

Option 2: convert to cmyk + spot colours and save as a photoshop pdf. Note: this solution requires the In-Rip separations function ONLY. you cannot output as a separated file.

Option 3: save as a dcs2 image. The option only works with separated workflow. You will not be able to output composite high res proofs of this without workarounds.

Option 4: save each spot image as a separate file. either bitmap or grayscale depending on the image. Place both into a new InDesign file centered on the page same size as the image. Colourize both to the desired spot colour with the direct select tool. Multiply in transparency the top image to the bottom image. Export as an eps (or pdf with no compression and leave colour as is). Place this new file into your document.

John

kristen weber

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May 1, 2003, 10:11:00 AM5/1/03
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Thank you for the suggestions. I did convert the original duotone files to multichannel, and saved as a dcs2 image. When I print these images directly from photoshop, they separate perfectly, so I'm not sure why I get this problem printing them from within ID. Any ideas? Not sure if this is related, but I ran the "build booklet" script on my original document, and am printing from the assembled version...

John Kallios

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May 1, 2003, 12:19:06 PM5/1/03
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Is that assembled version a pdf document embedded into an InDesign document?

If it is, then that is the problem. DCS2 images work with a separated workflow. The script the imposes by pdf works in a composite workflow to generate the pdf files.

There are other scripts you can use to impose the pages other than the pdf version. My swiss cheese memory is preventing me from recalling the names of the scripts. You can check the studio exchange, I believe one is in there.

But, did I mentioned, I hate the dcs2 format. I do all my images as option 4 personally.

John

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