In the fabs there's a system call LDI, laser direct imaging, it's
similar to the laser system of a laser printer but it's a uv laser
instead infrared, and instead focusing the laser in the roller it points
to the pcb dryfilm (a special more sensitive one). It's very fast and it
doesn't need masks.
On 06/28/2012 08:36 PM, DJ Delorie wrote:
> Is it time for someone to purpose-design a direct-to-pcb printer?
> Probably way too expensive to consider, but still...
>
> Maybe something that laminates UV film on, and has a linear array of
> high power UV LEDs to expose the film as it's being laminated, on both
> sides... Include an infeed tray with registration pins for pre-drilled
> PCBs... pre-drill, drop on pins, press button, when pcb comes out the
> other side you wait 15 minutes, peel off the outer protective film, and
> develop. Maybe it could laminate (or just use a sticky-backed film) on
> a UV-opaque film over the UV film after exposure, so you don't even need
> a darkroom :-) Add a tiny inkjet head on the way out to print timestamp
> and job information, and you're done!
>
> ok, blue-skying over :-)
>
>
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