RE: bleach/etch mordancage

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From: Judy Seigel (jseigel@panix.com)
Date: 07/30/01-01:00:55 PM Z


On Mon, 30 Jul 2001, Jonathan Bailey wrote:

> Chris-
>
> FWIW: Tri-Ess Chemicals in Berkeley (my source) sells copper chloride in
> several weight divisions including one-pound lots for $29.50.
>
> As you will only be using something like 10 grams per liter it strikes me as
> reasonable enough to pay... but then I use alot of gold chloride and maybe
> am numbed to prices...
>

And it occurs to me that I've only done the "original" mordancage, that is
method in the early literature -- bleach out the developed silver before
fixing and re-expose and develop up the remaining silver halide for a
"negative" image (tho it will be a positive if you begin with a positive).

Therefore, although I assume the copper sulfate would work with the
current method of bleaching back & repositioning an already fixed
photograph, can't guarantee it. (Well, we can't guarantee any of these
things, needless to say, but you know what I mean.)

Judy

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