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

----- Original Message -----
From: "Stefan Trethan" <stefan_trethan@...>
To: <homebrew_pcbs@yahoogroups.com>
Sent: Friday, January 02, 2004 9:05 PM
Subject: Re: [Homebrew_PCBs] Re: Toner Transfer Method, comments on Mike's
pcb photo


>
> >
> > It can cause problems, as toner generally contains carbon black which
> > is conductive. In most circuits this may not cause a problem, but in
> > high impedance and RF circuits it can very well cause problems.
> >
>
> You can repair potentiometers with toner.
> I thought it is the iron powder acting as "developer"
> (transfers toner to photo drum)
>
> I didn't know that is carbon black?

In a previous existence I worked for Rank-Xerox (UK) and Xerox Research
(UK). Toner is basically a combination of carbon black and a thermo-plastic.

Leon
--
Leon Heller, G1HSM
Email: aqzf13@...
My low-cost Philips LPC210x ARM development system:
http://www.geocities.com/leon_heller/lpc2104.html