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Subject: Imaging PCB with LED

From: <eslavko@...>
Date: 2013-09-13

Hello...

Long time ago I remember that someone has UV laser mounted on inkjet printer and developing photoresist on pcb directly.
I'd like to know is someone has making some test with cheap 3W UV LED instead laser. I think the power from LED can be focused on pretty small spot to cure photoresist. But don't have any idea how long should take to.
My idea is to use focused LED to aprox 1mm spot and then to use some mask (like aperture whell) to do finer trace. And to use vector instead raster imaging.