Homebrew PCBs

----- Original Message ----- 
From: "Russell Shaw" <rjshaw@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Thursday, November 17, 2005 2:30 AM
Subject: Re: [Homebrew_PCBs] Re: A $500.00 "UV" non-trivial exposure 
box.....


> It doesn't matter how expensive it is, if it's not compatible with the
> transparency. I've seen replacement ink that's supposed to give equal
> results on photo quality inkjet paper, but it doesn't work on the
> epson transparency.
>
> Unlike other transparencies that are just a rough sandpapery surface,
> the epson stuff has a gelatine absorbing coating. Print heavy in epson
> ink and you'll see the droplets absorb and sink into it. Other ink just
> sits on top.
>
> Certain combinations of refill ink and transparency can give adequate
> resolution, but take longer to dry, and may not be as dark (still dark
> enough tho).

Mega sells sheets of film specifically made for PCB transparencies in both 
laser and ink-jet printers. The laser printer stuff works very well, but is 
expensive, so I usually use tracing paper. I keep meaning to buy some of the 
ink-jet film to try in my Epson.

http://www.megauk.com/

Look for JetStar and LaserStar under Artwork Aids. There is a new JetStar 
Premium film for high res.

I'll get some JetStar film when I get back from a short holiday, and try it. 
I'll ask them what the best printer is, for it.

Leon 

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