Homebrew PCBs

On Sat, 11 Nov 2006 19:06:50 +0100, Lez <lez.briddon@...> wrote:

>
> Well maybe its all in the printer, l may be lucky!
> I think problem will be the 'static' wont be able to work through the
> copper to pull the toner off the drum, possibly because the copper
> gets earthed out by the chassis somewhere, but if it can be insulated,
> maybe even carried on a plastic tray etc like a cd is in a cd printer,
> then it may 'charge up', problem I see is you may have to make the
> distance from the drum to the fuser at least the space of the largest
> board you intend to print, ie say 30cm for 12*8 boards.
> maybe instead of a tray, a belt, like a conveyor system, with it
> looped around the fuser roller back to the pressure roller under the
> drum.


The static does not charge the paper, it creates a field that pulls the  
toner against the paper.
So by charging the whole copper sheet you would probably get a blurry  
image, if you don't short to the drum that is.

The only method that seems promising is using a silicone coated roller in  
contact with the drum, that in turn contact the heated PCB running under  
it transferring the image.

One hell of a project.

ST