<The difficulty with this approach is that the potrassium ferricyanide in
the cyanotype solution is a silver bleach.
The silver in your BW print would oxidise to a salt a disappear !
Cyanotype over a gumprint, or vice versa, works fine though.
Terry King >
.the idea is to use a largly unexposed (that is around the edges a few
exposed areas)B&W print, keeping the centre white. I want to use this
white area for the cyanotype. As I understand from Jack Fulton this
should work. Any thoughts on effects of a strong UV exposure onto a
processed silver print?
Cor Breukel
http://ruly70.medfac.leidenuniv.nl/~cor/cor.html
"The Infrared Gallery"
http://ruly70.medfac.leidenuniv.nl/~cor/ir-gallery.html