Those are stitching artifacts and that is a fact of life with flattening transparency. There should be no reason to do that in 2016.
What exactly is the end game here?
Produce a print and web PDF that can be used by my client that includes transparency and overprint simulation. Multiply blend mode is not an acceptable color rendering where I'm using it. I've also tried exporting to > Acrobat 4 and then I lose my overprint simulation. What are my alternatives?
The only way to include simulate overprint is to flatten the transparency which will give you the stitching artifacts.
If you can’t use multiply I can’t really think of an alternative but you will absolutely need two separate PDFs for this.
That was my concern. I realize I need separate PDFs. I knew there was a reason I hated overprint...
Thanks anyway! =)
When you say 'print' PDF, do you mean for commercial printing, or so that people can print a single copy on their home/office devices? If it's the latter, simulate overprint ought to be avoided.
Since moving to unflattened proof PDFs, I do miss the ability to simulate overprint. I have to rely on the viewer's PDF reader and their settings. For instance, if I miss an overprinting white logo on some supplied artwork (it would never happen in mine!), and it disappears on press, if they aren't previewing the overprints they can still say it was there on the proof they approved.
Multiply blend mode is not an acceptable color rendering where I'm using it.
Why can't you use Multiply, is it a total ink problem?