You can buy a printhead that is driven by a basic
stamp for about $100. It is theoretically possible to
adapt this print head to a CNC. Unfortunatey it is not
a piezo.
Based on Stefan's work, you need at printer with very
high resolution (many tiny holes) to adequately cover
the pcb. Remember the ink is not absorbed and does not
spread out on the pcb as it does on paper.
You do bring up a good point. Direct to pcb resist
printing may be technically possible, but is it going
to be practical for the average person? There are
always a few hardy souls with a CNC or wiliing to jump
in and tear apart a printer. But what about the
average joe?
He is looking for a simple reliable inexpensive
technique with off the shelf items.
Toner transfer was a step in that direction, but we
all know about the inconsistancies in printer / paper
/ pressing that have plagued many people and the many,
many posts about problems with TT.
I really hope direct to pcb resist printing will at
least approach the level of Toner Transfer, but have
my doubts.
Myc
--- Cristian <
bip@...> wrote:
> Here you are a stupid idea:
> what if Zoran will "duplicate" a piezo printing head
> with only one
> nozzle, to use the better
> MIS Pro ink? Or another etch-resistant ink.
>
> One reservoir, filled with ink, with a little hole
> on bottom and a
> piezo transducer (buzzer) near that hole,
> to act as a pump. Pulse driven.
> The ink on the upper side of the piezo will make
> some pressure to
> fill that hole after each spit.
> Its inertia will keep the ink the right way.
>
> All on a CNC machine (previously used to drill).
> One drop per step, let say.
> Cristian
>
>
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