I'm pretty new to screenprinting. The main problem i'm getting at the moment on my prints is a marbling where it should be blank. (i know it's a crappy photo, but you can just see it) It's as if the ink is bleeding right through, although my screens seem pretty crisp after I expose them.
ImageShack - Hosting :: dscf1715qv0.jpg
I'm using 120 mesh, and I know most you guys recomend 200 - 300. Could this be the problem. Also, i'm exposing on a UV light table with film - so my exposure time is something like 20 seconds.