The additive must have a delicate balance of functions. Primarily,
it must not plug up the nozzles when sitting. It must also be easily
cleaned.
There has been some unsuccessful work done with "Future" polymer
floor wax. There also was some mention of using glycerine to slow
down the drying process.
Another issue is the type of printhead. The Epsons use a small piezo
pump, whereas the others actually vaporize a small amount to drive a
droplet out of the head.
Not an easy problem.
TANSTAAFL!
Myc
--- In
Homebrew_PCBs@yahoogroups.com, "Herbert E. Plett"
<cachureos@...> wrote:
>
> When I first made this post, I was it who made the mistake of
mixing
> (miscreating) threads. I apologize.
> As there was no reaction I am re-posting, or am I barking up the
wrong tree?
> ------
>
> I have not done any tests by myself yet, but what I have been
reading makes me
> think of certain points:
>
> -there are apparently two sorts of ink: dye and pigment based.
> -dye inks are essentially thin and leave (almost) no residue and
work by
> 'dirtying' the surface they are applied to.
> -pigment inks are thicker and leave some sort of 'residue' (aka
pigment) on the
> surface they are deposited on.
> -the 'curing' process applies heat until the 'residue' burns
(carbonizes)
> leaving something stuck on the surface that is not water (etchant)
soluble.
> -dark inks need very little residue to be visible, whereas light
inks (yellow)
> need a thicker residue to be visible, so after 'curing' more stuff
is available
> to protect the surface. This explains why black has proven useless
and yellow
> the best.
> -alternate reason may be that black is already carbon and does not
change by
> heating while yellow is some sort of delicate organic pigment that
nicely
> 'burns' and sticks during curing. Remember that those who report
success say
> the yellow has to turn brown to work.
>
> question to discuss:
> is there some chemical (surely organic) to be added to the ink
that:
> 1) is water soluble (or suspendable)
> 2) adheres well to metal
> 3) becomes inert when (over) heated?
>
> the yellow pigment of MIS ink is one answer, are there any others?
> some sort of water soluble varnish?
> one that could be used with non Epson printers?
>
>
>
>
>
>
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