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Subject: Re: Direct inkjet resist printing using MIS pigmented inks

From: "lcdpublishing" <lcdpublishing@...>
Date: 2006-04-28

Steve, If the puddling stays within the boundries of the area you
want printed, why worry about it?

Chris





> --- In Homebrew_PCBs@yahoogroups.com, "Steve" <alienrelics@>
wrote:
> > >
> > > Sorry.... first test not fully successful. Details here:
> > > http://www.polyphoto.com/tutorials/DirectInkjetPCBs/index.html
>
> Updated! Gist: Still way more ink that is probably needed, as it
still
> puddles, but it no longer strays outside the lines.
>
> I've got this cooking in my food dryer at 145F right now. If it is
> still looking wet after a few hours, I may stick it in the toaster
> oven at a higher temp.
>
> I should put something like a layer of Future on the back so I
don't
> waste etchant. Plus I can still use the back for the next test.
>
> Next to try:
> Whichever ink color/combo works best, use successively lighter
prints
> to vary the amount of ink. At some point the puddling should become
> more acceptible before the ink dots get so far apart that traces
get
> holes.
>
> Then thinner traces. It may turn out that wide areas and thin
traces
> require different amounts of ink, if so that should be a simple
matter
> of varying the shade of the trace. Naturally it would be much
better
> to find a setting that works for both!
>
> Then the next experiment may be to load nothing but that color into
> all 4 heads of another Epson. The reason being that the printer can
> print at higher resolutions when using all heads, as compared to
using
> only one color or loading the selected color into the black head
and
> using "black ink only" settings.
>
> Steve Greenfield
>