The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: Jim Yanik
Subject: Re: Etch resist Ink with Ink Jet printer Direct on PCB ?
Date: Thu, 12 Sep 2002 02:58:11 +0000 (UTC)
Organization: Friends of Lummox
References: <firstname.lastname@example.org> <email@example.com>
NNTP-Posting-Date: Thu, 12 Sep 2002 02:58:11 +0000 (UTC)
firstname.lastname@example.org (Bill Sloman) wrote in
> Jim Yanik wrote in message
>> "Coolkits" wrote in
>> > 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 an etching solution. The performance of other inks would be
>> questionable.How 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
One other thing to consider is that ink-jet inks soak into paper,but will
not on a copperclad surface,perhaps getting smeared from moving printhead
Would dot coverage be good enough to prevent pinholes? It would not be a
true solid line or polygon.
Maybe a thermal-wax printer would be better.
Jim Yanik,NRA member
remove X to contact me
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup