I have a couple of PDF files here which are saved as PDF/X1a:2001. Those contain some outlined/curved text as well as an embedded background image.
In some of the PDFs there is a background picture which is tagged as "Transparent CMYK". Have a look at the attached image.
When printing those files on a large format printer (using a ripping software), I get awkward color results for all the files which contain a "Transparent CMYK" picture.
I tried Googling, Binging and DuckDuckGoing it, but I can not find any useful information about "Transparent CMYK".
Can you guys and girls help me out with some explaniation/links/sources that explain something about this?