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Subject: Re: [Homebrew_PCBs] Inkjet PCB: Curing or Oxidizing

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2006-08-11

On Fri, 11 Aug 2006 18:29:19 +0200, javaguy11111 <javaguy11111@...>
wrote:

> I have been following the inkjet process with great interest. I am
> curious though if the curing process is some kind of oxidation of the
> pigment or some other process.
> Perhaps some kind of enclosure for the hot plate (an upside down pan)
> and using something like helium to displace the oxygen might provide
> some intersting results.


At first i was certain it is just a matter of boiling off all water, but
now i know i was wrong because the effect starts at above 200C. Maybe it
is some other component boiling off - some glycol?

Apart from acting as a etch resist the curing will also make the ink much
more resistant to Acetone. But also air-dried ink will be much more
resistant to acetone after several days then when fresh.

As far as i know we do not know the composition of MISPRO ink. Maybe
someone could request a MSDS?

ST