Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

----- Original Message -----
From: "Marko Pavlin"

Here's one interesting article:

http://www.smtnet.com/adsystem/redir.cfm?adid=1611

I think it could be simplified for hombrew applications.

Marko

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They 're using a 9mW laser scanning at 1m/s. I assume it is single pass.
Laser printers are normally 0.3 to 0.5 mW but scan at a much higher speed.

They're scanning in both X and Y axis. Printers only scan in the X axis.

To do this with a laser printer you would have to use a huge laser or make
it multi pass.

Photo etching was an extension of existing photographic techniques of the
time. This project is trying to be an extension of existing photo etching
techniques.

I think it is time to re-think the design of the wheel.

Rather than substituting a new exposure technique we should be re-designing
the process chemicals so the direct laser printing is a part of the
development process and not just the exposure process.