On Wed, 10 Sep 1997, WF AUTOMA=?iso-8859-1?Q?=C7=C3O ?= wrote:

> > BTW have you tried to make a layout mask using transparency, ink jet
> > printer and photoresist, is the quality and contrast acceptable?
> > I have tried using laser printer, but have found that the black areas were
> > slightly transparent to UV, so the resulting pcb was practicaly unusable.

        You had a problem with a laser printed transparency? We use that
technique to make boards in the lab I work at, and it works like a charm.
We use an Apple laser printer (don't remember the model off hand), and we
have had no problems with spotting or pinholes.

        Pierce Nichols