Homebrew PCBs

Stefan,

I know that the same approach is used in HP (and others) Laserjet Printers,
meaning that for HP they 'cycle' the heater-bulb on-then-off to keep the
fuser at a certain temperature while idle, using a thermostat arrangement.
Some others just keep the light bulb at partial voltage to keep it warm.  A
partial-on bulb can last a very long time, but you use a lot of electricity
and give off a lot of heat.  HP (those engines are actually made by Cannon
for HP) cycles the bulb to keep the temperature, then turns it on full blast
during the fusing pass as the material "pulls the heat out of the fuser". 

Your process sounds exciting.  I will look forward to pictures if you can
share them.


Sincerely,

Larry Miner
larry.miner@...
Sandcarving / Glass Awards / Digital Photography



-----Original Message-----
From: Stefan Trethan [mailto:stefan_trethan@...] 
Sent: Sunday, February 08, 2004 12:31 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Fuser as Laminator - Result


Hi all,

Good news, the Fuser works perfectly.

<snip>

(does anyone know if it harms the quartz heater lamp running
on "orange" half power, because then i will add some hysteresis to get it
either full on of full off....??)


<snip>