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Subject: Re: Etch resist Ink with Ink Jet printer Direct on PCB ?
X-Newsreader: Microsoft Outlook Express 5.50.4807.1700
Date: Wed, 11 Sep 2002 07:42:58 -0400
NNTP-Posting-Date: Wed, 11 Sep 2002 07:32:44 EDT
Organization: Bell Sympatico
I saw that injet refill supply houses sell cleaning liquid.
"Bill Sloman" wrote in message
> Jim Yanik wrote in message
> > "Coolkits" wrote in
> > news:firstname.lastname@example.org:
> > >
> > >
> > > Has anyone every tried putting Etch resist Ink in a BubbleJet or
> > > InkJet printer and printing a PCB design directy onto the copper side
> > > of a PCB. In this way one could skip the UV lighting and developing
> > > stage. I've seen that some Epson printers can print directy onto thick
> > > hard materials, but thats only been used to print directly onto CD's.
> > >
> > > Has anybody tried this ? would normal ink work or should a special
> > > ink be made ?
> > >
> > > Greezt,
> > >
> > >
> > >
> > >
> > I suspect most ink-jet inks are water-soluble,and thus would dissolve in
> > etching solution. The performance of other inks would be
> > are the printhead seals and gaskets going to tolerate the solvents?
> Most ink-jet printers use the Canon/HP BubbleJet technology, where a
> little heater warms up a water based ink to produce a bubble of steam,
> which shoots a droplet of ink at the paper.
> Because the print-head runs hot, and in water, it corrodes pretty
> fast, so these printers build the print-head into the ink cartridge,
> and limit the volume of ink to make sure that the print-head gets
> replaced before the corrosion is too bad.
> They don't sound too suitable for dispensing etch resistant inks.
> Epson uses a piezo-electric print-head, which squirts droplets of
> alcohol-based ink (don't try to drink it - the alcohol isn't ethanol
> but something less volatile, possibly iso-propyl alcohol or something
> heavier). The print head runs cool and doesn't corrode, so your
> ink-cartridge just contains ink (and a good deal more ink than the
> BubbleJet ink cartridges).
> These sorts of printers may be able to dispense etch resistant inks,
> but my old Epson Stylus Color 800 spends ages (and gallons of ink)
> rinsing the print head whenever I turn it on after it has been off for
> more than a day or two, and if your etch-resistant ink doesn't behave
> in much the same way as their regular inks, it will clog the print
> head, after which you can more or less throw the printer away.
> Tony Williams has worked out how to get into one of the Epson Stylus
> print-heads (not a procedure supported by Epson) and rinse it clean
> with cheaper solvents than their ink, but I lost his instructions
> (embarrassing mistake)and ended up buying an end-of-line bargain
> colour printer rather than cleaning the old print-head in my by then
> five-year-old b/w printer.
> Bill Sloman, Nijmegen
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