Fanatastic!
You are leaving a very thin film of a wetting agent on the surface of the
copper, very similar in concept to the brake fluid.
Accoding to the MSDS the only safety listed ingredient is butyl cellusove.
I'm sure there are other non-listed ingredients also.
For the record, the "cellusolves" are standard solvents used as grease
cutting / cleaning / wetting agents. As a matter of fact, they are the main
ingedient in "Fantastik" spray cleaner, one of the first to use them.
Myc
On 9/21/06, jam5411 <mardock@...> wrote:
>
> Yes, Steve I think Stefan is correct on the usage of the color inks on
> the later C8 series.
>
> Back to the PC boards and the inkjet process - I have struggled for
> two days trying to produce another PC board but to no avail until
> about an hour ago.
> A little history if what transpired first. I seems that everytime I
> fed a cleaned PC board into the inkjet I would get very small pools of
> ink - the ink was not dispersing on the PC board. (I remember
> distinctly not seeing that on the sample resolution board I had made,
> photographed and uploaded.) Upon etching the resultant board would,
> with magnification, have runs that looked like a childs connect the
> dots puzzle. In other words were ever there was one of these small
> pools there was enough ink that when cured would be a fine resist. But
> adjacent to these pools there was not enough ink remaining to form a
> resist. What had I done differently on that test board? I went back
> through the process over and over in my mind, yes old minds work a bit
> more slowly... I found the wipe that I had used in the trash, it had
> the consistancy of a lint free paper towel that I used as a final wipe
> (after dipping in iso alcohol) but seemed different. Well what I had
> done was grab a dried out "Simple Green All Purpose Wipe" that had
> been laying on the bench from who knows what. Quickly I prepared
> another test board and as a final wipe before inking the board used a
> new Simple Green wipe. Viola the deposited ink laid absolutely smooth
> on the PC bd stock. Cured it, etched and CNC'd, ready to stuff now. I
> can remember thinking at the time I was getting the small pools that
> some kind of surfactant was needed but what to use. I am not a chemist
> , so cannot explain why this works, just glad it does! I am also sure
> that this is not the best answer either but it sure a step in the
> right direction. Perhaps some of you that are more in the know can
> come up with a better solution?
> If any one wants pics let me know and I will take some and upload.
> John
>
> --- In Homebrew_PCBs@yahoogroups.com <Homebrew_PCBs%40yahoogroups.com>,
> "Steve" <alienrelics@...> wrote:
> >
> > --- In Homebrew_PCBs@yahoogroups.com <Homebrew_PCBs%40yahoogroups.com>,
> "Stefan Trethan"
> > <stefan_trethan@> wrote:
> > >
> > > On Tue, 19 Sep 2006 20:16:33 +0200, Steve <alienrelics@> wrote:
> > >
> > > > More info: Epson uses some kind of resin coating on the Durabrite
> > > > color inks. But not on the black. Since the resin coating is there
> > > > just so Durabrite pigmented ink will work on glossy paper, if you
> > > > specify Glossy paper it will not use any black ink at all, instead
> > > > mixing colors to get black. But if you use settings such as Matte or
> > > > plain paper, it will use all four colors.
> > > > Steve Greenfield
> > >
> > >
> > > I have not found that to be the case (no black used for glossy paper
> > > setting) although it will do that for transarency.
> >
> > I found the info on InkjetArt.com, looking at it again it was
> > specifically for the C80. Maybe Epson changed the ink used in later
> > C8x models.
> > http://www.inkjetart.com/c80/better_blacks.html
> >
> > Steve Greenfield
> >
>
>
>
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