Transparent Black

[Luiszvd]

Been having some problems with transparent blacks in illustrator cs5 files. I only pick it up once the pdf generated in illustrator, goes though the rip or in acrobat with overprint preview. Although in some cases the black artwork involved some whites, I did check for overprint white, which was not the case. These files come from outside customers which makes it all the more difficult to track down the problem.

 

[michaelejahn]

what PDF export are you using - ? Hopefully, PDF/X-1a would flatten any 'transparency settings' should you have an old outdated steam powered RIP, but assuming you are all ship shape and have a brand spanking new PDF RIP, you might try exporting to PDF/X-4 and see if this resolves you problem !

Good luck, and let us know if this helps !

 

[Luiszvd]

I had it set on exporting to PDF/X-3 and for some reason I was geting that transparency on my black, so I changed it to PDF/X-4 asyou sugested, and that sorted out the problem. So the thank you very much for the tip Michael.