Hi, all. I'm pretty new to the world of screen printing, and I'm wondering about xeroxs on transparencies. Between Kinko's and an HP Laserjet, I couldn't seem to make the positive opaque enough to get a good exposure. The image is washing out, but not 100%, which leads me to believe that light is burning through the positive. I'd prefer to use transparencies or some kind of acetate above anything else. I would rather not double up transparencies because I like doing details and subtractive work with an X-Acto. Any advice would be appreciated.
Also, for what it's worth, I'm using Diazo emulsion and burning screens with a 500 watt halogen work lamp. The exposure times have been between 7 and 11 minutes.
Again, any suggestions or advice would be awesome. Thanks.