Ryan,

Printing on transparencies can be problematic because the black area can
have little holes in it.

An intermediate solution is to use a mylar photoplot.  The resolution is
typically about 25 microns (0.001" for the Americans).  If you can send them
gerber files, and array many plots on a 12" X 24" sheet, it can be very fast
and inexpensive. (With a gerber file they won't charge you for data
conversion.)

Google "mylar photoplot" to find vendors.

David Nemeth

-----Original Message-----
From: mems-talk-bounces@memsnet.org [mailto:mems-talk-bounces@memsnet.org]
On Behalf Of Ryan Saunders
Sent: Wednesday, February 13, 2008 12:09 PM
To: mems-talk@memsnet.org
Subject: [mems-talk] Printer for transparency masks?

Hello all,

Our group was thinking of printing our own masks on transparencies instead
of using expensive chrome-glass masks.

Has anybody had success using printing for creating masks?

If so, what type of printer was used?  and what was your minimum feature
size?

Thanks in advance,

J. Ryan Saunders
PhD Student
Mechanical Engineering
University of Alberta