Thanks! but where can i get this ink? is it available at DIY shops?
How do I ask o it when buying? I just sa "Epoxy paint"? Is this the
same ink that has a pot life of only 5 hours?
--- In Homebrew_PCBs@yahoogroups.com, "gregben" <gregben@y...> wrote:
> --- In Homebrew_PCBs@yahoogroups.com, "lanz_24" <lanz_24@y...> wrote:
> > Hello!
> >
> > Does anyone have an idea what kind of ink is used to make
> silkscreen
> > prints on PCB's and how to use them?
>
> Epoxy. Requires mixing two parts (ink and catalyst). Heat cured.
> Screened through a tensioned polyester mesh. Photoemulsion is
> applied to screen to form image. Emulsion up positive film artwork
> is used to make the screen. Lines and text on the final PCB appear
> as black lines on a clear background on the film artwork.
> Developed screen is blocked everywhere except those areas that were
> black on the artwork. Ink is squeeged across the screen to transfer
> the image onto the PCB. Basically the screen printing process is
> the same as used for textile (t-shirt) printing, but the ink is
> tougher when cured and messier to clean-up.