instead of transfers from laser printer to copper.
how about just buying a thin copper sheet say 3mil or so.
then run the copper through the laser printer and print your art work.
just tested this and it dosent work so well
I used 'Slug & Snail' tape its an adhesive backed copper foil
sold in the garden dept at some stores (Seattle area)
placed a small strip on a sheet of regular paper and ran a
test page on an HP laserjet 1200 (nice printer for toner transfers BTW)
got some of the letters,but many dropouts and the toner lifted off onto
the rolls and re-deposited itself further down the page (smear)
a second test page without the tape came
out clean and sharp ,so no damage done :-)
Brian