Oyvind Kaurstad 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.
> >I also had no lack using this special transparencies (TES or
> something else)
> >which you iron press on a copper board.
>
> I'm using a HP 820cxi inkjet printer and regular
> inkjet transparencies.
>
> I buy PCB's with photoresist, and this works out ok for me.
> Generally I don't use track widths less than 0.2 mm.
>
> On the HP printer it seems that more ink is applied if I set the
> output
> quality to maximum and specify "Premium paper" instead of
> "Transparency"
>
> -Oyvind

Hi Oyvind

I had a HP DeskJet 600 from Oct 96 till last month. I now have a HP 690
C+. From my experiance I can say that all HP's (and probably all
inkjets) use more ink to increase quality. When printing High Quality,
the heads make more passes on the paper's lenght, ie: smaller "pixels"
of ink are deposited. Thus there are more "pixels" and more ink is used.
The result is a page soaked in ink if you use normal (thin) photocopier
paper.

Cheers!
--
Eric van Es               | Cape Town, South Africa
mailto:vanes@ilink.nis.za | http://www.nis.za/~vanes
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