Indesign CS problems
Out of context: Reply #9
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- Gorbie0
the problem comes from flattening transparency. I worked for a printer who used a PDF workflow (AGFA) and this happened all the time.
While there isn't any certain way to tell exactly how the conversion will react - it's best to stay away from transparency effects over spot colors, gradients, and complex vector artwork.
This is not your printer's "fault" really. As mentioned before - Adobe is ahead of technology again. the real reasons that these options are available is that 1) PDF 6 supports native transparency (doesn't need flattening even though postscript level 3 hardly supports this) which means 2) PostScript level 4 will support these kinds of layouts but has NOT been released yet, but is coming "soon".
there is one PDF workflow RIP software that will support native transparency but it is hardly standard and the name eludes me at the moment.
The common work around that prepress techs will use is to literally convert your layout into a flattened graphic in photoshop and print from that. most people wouldn't kow the difference anyway - but i found it unsettling that they would do that.... so try and keep it simple for now - and as always - wait for things to work as advertised.