Soojin,
I have found inkjet transparencies do not work all that well because
most inks do not absorb enough light. However, copying a printed paper
to a xerographic transparency works quite well for low-resolution work.
The toner absorbs UV and broadband radiation very well. A transparency
mask printed on a xerographic-process laser printer will also work well.
Edge raggedness can be a problem with these techniques, however. We
routinely use xerographic transparencies backed with a blank quartz
plate on our Karl Suss MA-150 mask aligner for low-resolution
applications.

Al Raisanen
Rochester Institute of Technology

-----Original Message-----
From: mems-talk-admin@memsnet.org [mailto:mems-talk-admin@memsnet.org]
On Behalf Of Soojin Oh
Sent: Tuesday, October 22, 2002 1:29 PM
To: mems-talk@memsnet.org
Subject: [mems-talk] low resolution photomask printer


When making low resolution photomask by printing on
transparency, do the printing companies use special
printers? Also are the transparent films special kind?

I am just wondering if I can print out my data myself
on regular overhead project transparency using high
dpi inkjet printer(such as Lexmark, or Epson). It
seems like they use very fancy kind of
printer(Heidelberg Quickmaster )in the company I use
to send my file to. Thier charge is over $100.00 for
one page print-out!

-Soojin in North Carolina

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