I have searched low and high on this forum and the internet for a solution, with no luck so far. I'm hoping that you InDesign gurus can help!
Whenever I use the 'Print Booklet' feature to generate a booklet from my InDesign CS5 brochure, the output has thin white lines in various areas that should NOT be there. The lines mostly show up in areas where I am using transparent PNG files, but there are no effects on the layers for these images.
This is an odd problem because:
The lines ONLY appear when I use the "Print Booklet" function. I have tried many things that have not worked:
I've put up an example showing you two different outputs. The one on the left is a regular JPG export, the one on the right is the Print Booklet export. Click on the images to see a larger example:
I've seen other people post about this problem elsewhere going as far back as CS3, but have never found a cause or a way to fix this. Some people have said 'it's just a rendering issue in Adobe Reader, and the lines will not actually appear when you have it printed'. However, when I go to print from my PDF file to my printer the lines are there in the output. They are also there when I print to a XPS document and view the image on the screen.
It's a transparency flattening artifact called Stitiching and basically, becasue youare printing to PDF you're up the creek. It only happens when transparency is flattened, but printing to PDF is a distiller function, and distiller doesn't support live transparency.
The best way around this, I think, would probably be to use an imposition script to impose a copy of the file, then export spreads from that using Acrobat 5 or higher compatibility, or, if you need to do this a lot, look into a PDF imposing plugin -- Quite Imposing gets good reviews here.