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I know someone'll say "where's the type?", but please indulge me, I'm sure there are plenty of InDy users here on these forums.
I receive PDFs of adverts that others have created in InDesign, for inclusion in black-and-white publications. I have the full version of Acrobat, so I can run some preflight checks before sending the files on, but I don't have any other Creative Suite apps so I can't do heavy-duty editing of the PDFs, nor can I work on the source files.
Two necessary features of what the PDFs should be, are (a) pure greyscale - so no CMYK-format objects floating around even if they are nominally black, and (b) all trnasparencies flattened.
My problem is, some of our designers don't seem to be able to fulfil BOTH these criteria. Often we'll get a file that's suitably greyscale (so it passes the preflight checks for "List non B/W objects" and "Document generates more than one plate" etc) but with un-flattened transparencies. But if I run Acrobat's transparency flattener, or get the designers to flatten the transparencies at source, things mysteriously change colour space, and we'll end up with CMYK drop shadows and so on.
Remember, I don't have/use InDesign. What I'm after is a (simple!) description that I can pass on to the designers, to say "you need to do this" so that the PDFs they output will be right.
Out of frustration, they're resorting to outputting as tiffs instead of PDFs, which works, but makes the files much bigger than they need to be, so I don't want to encourage that.
Can anyone help?