so i know this is an old topic but...
i just discovered a new paper for the toner transfer method.
the backing paper from sticky labels.
it's actually quicker and better than all the other papers i have tried. cheaper too.
so, to create a PCB,
1. get some sticky labels.
cut a square a little bigger than your PCB and peel the label off so you are left with the just the non stick backing.
2. in Eagle (or whatever PCB software you use) print the PCB onto a sheet of regular paper.
stick the square of label backing over where the PCB printed with sticky tape.
re-feed the paper (with the label backing taped to it) into the printer and re-print.
trim the printed label backing to the same size as the copper board you will be using.
3. iron the printed label backing onto the copper board.
be careful to only use straight down pressure. if you move the iron about the toner will get smudged.
there are some steam vents in the bottom of my iron so it is necessary to lift the iron off and reapply pressure a few times to make sure the toner has been stuck everywhere.
if you are doing a double sided board just quickly stick one side with your iron before turning over and positioning the other side then apply pressure to both sides at the same time.
4. cool the PCB under the cold tap and peel the paper off.
(no soaking of the paper is required like with many inkjet photo papers.)
some slight touching up is usually required with a permanent marker.
5. etch as normal.