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<DIV><FONT face=Arial size=2>Hi Martin </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I used an HP 690c inkjet for more than 7 years
& generic Overhead Transparency Film. I used to print 2 copies & lay
them one over the other to create a double layer. I have recently replaced the
HP with a Lexmark Z45 & have the same good results. The 890c should work
fine.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>For exposure, I have 2 x 18watt Phillips UV
tubes & use the PCB suppliers suggested exposure time (30 secs) at about 15
cm distance. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Peter</FONT></DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=Martin.Czech@Micronas.com
href="mailto:Martin.Czech@Micronas.com">Czech Martin</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=jorgen.bergfors@idg.se
href="mailto:jorgen.bergfors@idg.se">jorgen.bergfors@idg.se</A> ; <A
title=synth-diy@dropmix.xs4all.nl
href="mailto:synth-diy@dropmix.xs4all.nl">synth-diy@dropmix.xs4all.nl</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, February 05, 2003 1:14
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: [sdiy] PCB making: how to
get a transparent foil with real black lines?</DIV>
<DIV><BR></DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff
size=2>Could you please write down the exact type number of the HP
foil?</FONT></SPAN></DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff
size=2>After my experiments, the foil type does really matter. Some foils show
</FONT></SPAN></DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff size=2>pin
holes after printing, others wrinkles or cracks.</FONT></SPAN></DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff
size=2>Using some OverHeadProjector foil or the other seems to be no
</FONT></SPAN></DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff
size=2>solution so far.</FONT></SPAN></DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff size=2>Some
people seem to suggest tracing paper.</FONT></SPAN></DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff size=2>I
will look at this.</FONT></SPAN></DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff size=2>And
Seno 4006 developer instead of NaOH, because of the
improved</FONT></SPAN></DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff
size=2>handling (less sensible to temperature, not exposed areas can withstand
longer).</FONT></SPAN></DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff size=2>I've
noticed these difficulties with NaOH, too.</FONT></SPAN></DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff size=2><A
href="http://www.electricstuff.co.uk/pcbs.html">http://www.electricstuff.co.uk/pcbs.html</A></FONT></SPAN></DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=887450711-05022003><FONT face=Arial color=#0000ff
size=2>m.c.</FONT></SPAN></DIV>
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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> jorgen.bergfors@idg.se
[mailto:jorgen.bergfors@idg.se]<BR><B>Sent:</B> Mittwoch, 5. Februar 2003
10:43<BR><B>To:</B> Czech Martin;
synth-diy@dropmix.xs4all.nl<BR><B>Subject:</B> Re: [sdiy] PCB making: how to
get a transparent foil with real black lines?<BR><BR></FONT></DIV>
<P><TT>>Is there someone out there how can propose a better
method<BR>>to get a layout on film?</TT><BR><BR><TT>I use the HP Deskjet
1220C. I think that most of the modern HP inkjets should work, as long as
you use HP's tranparency film. The result is not totally perfect, but it is
good enough, I think. You can have a look at my results here:</TT><BR><TT><A
href="http://hem.bredband.net/bersyn/workshop.htm">http://hem.bredband.net/bersyn/workshop.htm</A></TT><BR><BR><TT>Jorgen</TT></P></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>