Best Transperancy Film??? for artwork

by Hamradio2008 on Fri Dec 10, 2010 8:59 am

What is the best transperacy film for printing pcb artwork???
I got some from the art store and it isnt coming out full black, just seems like poor quality,
I have a new toner cartridge and a high quality HP laser printer.
Any recomendations please let me know. TNXs
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Re: Best Transperancy Film??? for artwork

by westfw on Fri Dec 10, 2010 11:12 am

I have heard that there are advantages to using semi-transparent paper (eg vellum) rather than transparency film. The claims were that it is more dimensionally stable when subjected to the fuser temperatures, and "transparent enough", better able to accept toner, and "transparent enough" for most photo-based PCB processes. (no direct experience, though.)
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Re: Best Transperancy Film??? for artwork

by mikeselectricstuff on Fri Dec 10, 2010 4:36 pm

Tracing paper. banned and good toner adhesion.
Use fairly heavy stuff (>=90gsm) to avoid crinkling in the fuser.
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Re: Best Transperancy Film??? for artwork

by Hamradio2008 on Mon Dec 13, 2010 10:10 am

TNX, toner adhesion seems to be the problem, I will try some vellum or tracing paper. 73
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Re: Best Transperancy Film??? for artwork

by Agent_24 on Mon May 14, 2012 4:14 am

Try wiping over it with a black whiteboard marker, leaving to dry and then carefully wiping off the marker residue.

Found that idea on the Homebrew PCBs Yahoo Group. Seems to work quite well, I tried it yesterday.

Apparently you can also buy "Toner Darkener" in spray bottles which is probably easier to use.
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