hello
like says jonathan this process was often used by j-c sudre (died last
year)
and by the fact well known by him.
the mordancage is a sort of toning, in fact it' a real toning .
the first step is like a toning
put a print in the following solution:
water 800
copper sulfate 20g
potassium or sodium citrate 60 to 100 g
acetic acid 30 cmc
ammonium sulfocyannate 10g
water to make 1 l
look at the processing and when the picutre don't change any more
wash it water till there is no more color in the white border area
that's the mordancage
after that you must do the dying of the print
with a dye solution as this one
water 800ml
acetic acetic 2 to 10 ml(if white color add more acid)
dye 0.05g to 2 g
the dye you can use
methyl violet
cocceine orange
green sulfo 2 b
green naphtol
amarante for pink
violet acid 5 b
Nze christian