RE: Polymer Plate 80% screen Weirdness

Jon,

I reread your post and perhaps replied in haste.

Are you actually developing these plates or just looking at them after
pre-exposure?

Darryl

-----Original Message-----
From: Jon Lybrook [mailto:jon@terabear.com]
Sent: Sun 2/15/2004 7:05 PM
To: alt-photo-process-l@sask.usask.ca
Subject: Polymer Plate 80% screen Weirdness
 
Hi All,

I'm starting to get set up at home to burn photopolymer plates with my
blacklight box built from Dick Sullivan's fabulous directions in his
book
on PT/PD printing.

What I'm finding is the 80% density, 300lpi screen I'm using to
pre-expose the plate is resulting in a kind of mottling effect. Looks

like water spots directly on the plate.

Has anyone else come across this?

Thanks,
Jon