See Through Transparency Problems

Adobe proides an excellent guide to transparency for print designers

Many designers and printers especially fear the transparency options in InDesign and Illustrator. They may not RIP properly, strange outlines around graphics appear, dark backgrounds magically materialize in place of drop shadows and so on.

InDesign transparency isn’t that evil. You just need to know how to deal with it—like many people, transparency is not to bad once you get to know it. There are ways to use transparency without compromising print quality, so you can obtain the result you are looking for without compromosing your design.

Adobe has a great guide about how to deal with transparency when producing design work for print output: A Designer’s Guide to Transparecy for Print Output. You can download it here.

And may you never have a transparency problem again.