Homebrew PCBs

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.
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.
Regards
John C

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

> -----Original Message-----
> From: Stefan Trethan [mailto:stefan_trethan@...]
> Sent: 19 September 2006 21:22
> To: Homebrew_PCBs@yahoogroups.com
> Subject: Re: [Homebrew_PCBs] Fuser Temperature

> 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.

Yes, I remember the canning you received about using the chicken grill motor. I have used a geared hobby motor. Just by chance the shaft is 5mm with a flat on it that fits one of the drive gears from a superfluous paper feed guide on the fuser unit. When I clean up the unit cosmetically I will post some photos etc. In the meantime details of the motor can be found here:
http://www.jaycar.com.au/productView.asp?ID=YG2734&CATID=&keywords=YG2734&SPECIAL=&form=KEYWORD&ProdCodeOnly=&Keyword1=&Keyword2=&pageNumber=&priceMin=&priceMax=&SUBCATID=

I am sure these motors can be found just about everywhere.
Regards
John C

On Tue, 19 Sep 2006 14:21:20 +0200, John Craddock  
<John.Craddock@xitech.com.au> wrote:

> Yes, I remember the canning you received about using the chicken grill  
> motor. I have used a geared hobby motor. Just by chance the shaft is 5mm  
> with a flat on it that fits one of the drive gears from a superfluous  
> paper feed guide on the fuser unit. When I clean up the unit  
> cosmetically I will post some photos etc. In the meantime details of the  
> motor can be found here:
> http://www.jaycar.com.au/productView.asp?ID=YG2734&CATID=&keywords=YG2734&SPECIAL=&form=KEYWORD&ProdCodeOnly=&Keyword1=&Keyword2=&pageNumber=&priceMin=&priceMax=&SUBCATID=
> I am sure these motors can be found just about everywhere.
> Regards
> John C

Yes, those are suitable too, but may be harder to get and one needs to  
make sure the speed is right, they come with all sorts of gear ratios.
I expect something like a battery screwdriver might work too, although  
they turn faster.
The chicken grill motor is a good solution, and i can recognize one of  
those when i see it, so i'm not worried about the people who took a  
peculiar interest in it.

ST