Homebrew PCBs

On Tue, 19 Sep 2006 12:41:42 +0200, John Craddock  
<John.Craddock@...> wrote:

> Question to the printer fuser gang in the toner transfer camp.
> What temperature does one set the fuser to for good results. My LJ2100  
> manual says the fuser temperature is 200 deg C. I have calibrated mine  
> to 193 deg C. Is this OK. Also what feed rate is reasonable? I have  
> incorporated a variable speed drive into my design and I was wondering  
> what a good starting pc board feed rate is to commence experimentation.

I ran mine at 180C and the feedrate was about an a4 page per minute (a  
foot a minute).
Used a chicken grill motor and a belt, so i did not specially select the  
speed but it worked fine with one pass.


> BTW Stefan I used your circuit design to control the temperature through  
> a triac. I put a led in the primary circuit of the opto-triac driver  
> that turns off when the set temperature is reached then cycles on and  
> off as the temperature cycles around the set-point. Works a real treat.  
> Thanks very much for such a simple solution.

I'm glad it was of use to someone. The circuit has of course many  
drawbacks and weaknesses, but it's something i threw together to test the  
fuser and it worked well enough so i never changed it.

ST