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	Mon, 19 Jun 2017 14:10:46 -0700 (PDT)
Subject:	Re: [geda-user] DIY PCBs --> UV laser printer
To:	geda-user AT delorie DOT com
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	<efa75d25-7cfd-49a8-cec5-7522a80ee010 AT ecosensory DOT com>
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	<e51a2d5d-f53b-9a77-5b75-fd7d86ea71fe AT ecosensory DOT com>
From:	"Sabin Iacob (iacobs AT m0n5t3r DOT info) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Date:	Tue, 20 Jun 2017 00:10:43 +0300
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From: Sabin Iacob <iacobs AT m0n5t3r DOT info>
To: geda-user AT delorie DOT com
Message-ID: <3bbb7765-f5b7-17ed-66e7-bcf00b6a667d AT m0n5t3r DOT info>
Subject: Re: [geda-user] DIY PCBs --> UV laser printer
References: <20170617081144 DOT 16928 DOT qmail AT rahul DOT net>
 <efa75d25-7cfd-49a8-cec5-7522a80ee010 AT ecosensory DOT com>
 <20170618153703 DOT D607D801F77A AT turkos DOT aspodata DOT se>
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 <e51a2d5d-f53b-9a77-5b75-fd7d86ea71fe AT ecosensory DOT com>
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On 06/19/2017 10:40 PM, John Griessen (john AT ecosensory DOT com) [via
geda-user AT delorie DOT com] wrote:
> On 06/18/2017 02:57 PM, Nicklas Karlsson
> (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com] wrote:
>> To print pattern with UV laser printer directly on PCB treated with
>> photo resist will probably produce a very good result but I
>> have not find printer for sale and guess they are very expensive.
>
> A raster printer with UV light would be a good product that would
> compete with the CNC mills for pcb
> production.  I don't hear anything about UV LED arrays, so probably
> swapping a UV laser diode might work in
> a normal laser printer design, but have not heard of UV laser diodes
> either.


The laser printers I've seen disassembled also had some collimating
lenses alongside the rotating mirrors that move the beam; those lenses
will need to be at least repositioned or possibly replaced due to the
wavelength difference (printers use NIR lasers, about twice the
wavelength); otherwise you'd end up with a wider beam (lower resolution)
and / or, worse, a conical beam (inconsistent resolution).



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