You said:
>What I would like to ask: are a "normal" processed B/W silver print and a
>cyanotype chemically compatible. I would like to coat finished B/W print
>for cyanotype (shouldn't be a problem I think) and expose (maybe a
>problem, a lot of UV exposure on the B/W print?).
>Any thoughts on this, or experiences with this?
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