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Subject: Re: [Homebrew_PCBs] Direct laser printer to PCB?

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2006-07-24

On Mon, 24 Jul 2006 07:21:18 +0200, Herbert E. Plett <cachureos@...>
wrote:

> nd from
> there it transfers by sticking to the carrier.


by _electrostatic sticking_!!
There's a pickup corona wire that charges the paper stronger than the drum
to pick up the toner.
This means you will only get "by chance" transfer if you remove this
charge. Which experimentally turns out to be maybe 50% on the metal 50% on
the drum. Not enough to form a resist.

And that's not even talking about the edges of the PCB killing the drum.



The most reasonable i've heard of so far is a silicone roller that
contacts the drum. This roller can be charged nicely, and on the
bottom of the roller a PCB passes which is heated to fusing temperature.
This transfers the toner to the PCB.

Still way more complicated than an inkjet.

ST