well - some have asked for this..
this is an acetone print - one of the most easy - fastest - and most poisonous techniques I know of....
first a normal print is made - then a colour copy on a copying maschine.(sp?)
this copy is laid on a piece of thick copper printing paper, and then soaked with acetone....
another piece of paper is put on top, and the whole thing pulled through a etching press, under high pressure...
voila - the image has been transferred to the copper printing paper..
this is later slightly hand coloured.
the acetone is the tricky part. you can make beautiful prints in two minutes, but each print will take ten years of your sane life......;-)