Just recently I encounter one problem in Illustrator. Text in special pantone color applied on the background and used drop shadow. After I converted to PDF using print ps and distilled. But in the PDF, i saw some white parts came out on the text instead of pantone. So I tried another method using export PDF. The result looked fine but it came out again after went trough the RIP. (We used Fuji celebral workflow).
Anybody can help?
Sounds like a transparency issue. Here is an InDesign tip that also applies to Illustrator:
You could also set the shadow to multiply.
Thanks for the tips.