That is very interesting. Running a sheet of copper through a laser
printer is not likely to work because a copier/laser printer
operates by electrostatically charging the surface of the media, then
passing it over the toner powder (which sticks to the charged parts
of the paper).
You probably could transfer a toner based circuit layout to the
copper by printing it out onto a piece of regular paper, then laying
it upon the copper sheet and fusing the toner to the copper with a
hot iron.
There an issue with the adhesive breaking down in the presence of
high heat though..
~Rolan
--- In Homebrew_PCBs@yahoogroups.com, Brian Pitt <bfp@e...> wrote:
> I tried a crude test that didn't work out too well so I can tell ya
one
> way that wont do it :)
>
> I used 'slug tape' its an adhesive backed copper foil the critters
don't
> like to crawl over and stuck a strip of it down on a sheet of paper
thinking
> I could laser print the traces directly and etch , I would have
used overhead
> transparency film for the backing if it worked
> unfortunately the toner doesn't stick well to the copper so it
would get
> layed down in the right place then either stick to the hot roller
and get
> redeposited further down the page or just barely stick to the copper
> and peal off once it came out
>
> it might have worked better if I had roughed up the copper surface
a bit
> but I had a feeling it wasnt going to do that much better
>
> it was worth a shot anyway ,maybe if you used a photo resist
instead?
>
> Brian
> --
> "Nemo me impune lacesset"
>
> On Wednesday 16 July 2003 09:03 am, Ron Amundson wrote:
> > Has anyone ever tried to homebrew a flex circuit. It would seem
to be a
> > similiar process except for finding copper coated kapton film. I
wonder if
> > one could get prelaminated kapton, or if one has to do it
themselves. The
> > copper bonding is probably a real pain due to the slipperiness of
kapton.
> > I'd like to give it a try, but any pointers would be appreciated.
> >
> > Thanks
> > Ron