Homebrew PCBs

I'm prtetty sure its the temp relative to the toner.  I get excellent
adhesion after 20 passes - poor adhesion at 15 - no adhesion at 10. 
contamination would lead to no/poor adhesion no matter how many
passes.  If you have a thermocouple set up that would be great.  I
plan on measuring the temp of mine and having measurements of other
laminators would be helpful.

On the subject of the manual saying 183C.  I dont think this is a high
accuracy device so there could be quite a range swing between units. 
Having measurements is good.


--- In Homebrew_PCBs@yahoogroups.com, "Radra" <infositeus@y...> wrote:
> 
> I am using an HP LaserJet 2200d printer with an HP 96A toner 
> cartridge.  The printer is set for "Best Quality" printing and the 
> printing density is set to maximum, e.g. 5.
> 
> If there is sufficient interest, I can pass a thermocouple thru the 
> laminator and measure its temperature. It is likely the temperature 
> can be manually adjusted by doing some simple circuit modification to 
> the laminator.
> 
> Poor toner adhesion can also be caused by contamination of the paper 
> after printing or by contamination of the PCB surface prior to fusing 
> in the laminator.  Air borne contaminates such as dust or oil 
> (cooking, machine, etc.) can be a problem so keep paper and PCB 
> covered until fused together. I wonder if dirty rollers in the 
> printer fuser could contaminate the image. Improper surface 
> preparation of the PCB can also be a problem.
> 
> I am using double-sided 1-ounce-copper 0.062-inch FR4 PCB material.
> 
> Lyman
> 
> --- In Homebrew_PCBs@yahoogroups.com, "Phil" <phil1960us@y...> wrote:
> > 
> > what printer (actually, toner) are you using?  With my canon
> > copier/toner, I need 20 passes to get the toner to stick to 062 
> double
> > sided material.
> > 
> > There are 2 possible causes of this discrepency in the number of
> > passes: toner fusing point and variability in the heating of the
> > laminator.