Homebrew PCBs

If you think about a while, you will realize that in the original 
"Xerox" process.......
and our "Toner Transfer" is merely a corruption of that basic process,
the PAPER is heated first, then it is exposed to the toner powder.
The toner "adheres" to the paper by virtue of the fact that the paper
is hot, and the toner can "fuse" to the paper.

I don't think one can be consistently successful with the toner transfer
gig unless the copper clad is heated prior to laying the image (glossy 
paper)
on its surface.

Roland F. Harriston, PD