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

previous by date index next by date
previous in topic topic list next in topic

Subject: Re: [Homebrew_PCBs] Re: TONER

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2008-01-15

It is easy to figure out, pull the fuser unit, attach some slow drive
motor of your choice, attach a thermostat, preferrably electronic not
electromechanic, and you are all set.
There is a thermistor already in place on all fuser units i have ever
seen, they have already figured out how to keep it in contact with the
rotating roller for you. In can be used as an input for a thermostat,
mine is just a plain npn transistor, a pot, a transformer and a solid
state relay i had sitting around. Might not be terribly accurate or
pretty (i hid it in a junction box) but more than enough to do what is
required.

ST

On Jan 15, 2008 6:39 PM, peripherin <peripherin@...> wrote:
> I have ordered a selection of thermostats from Radio Spares. I did
> not know which temperature would work best with the HP toner but
> guessing points me to around 200deg C. I will modify the laminator
> when they arrive. If it does not work then no loss old laser printers
> are easy to come buy and strip apart.
> Does anyone know of any good threads or sites for laser printers that
> have been modified to do this ?
> Just as a note I am in no way responsible for people who decide to
> carry out this modfication. You do so at your own risk.