[pure-silver] Re: Chromogenic toning?
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Fri, 21 Jan 2005 14:49:03 -0800
----- Original Message -----
From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Friday, January 21, 2005 2:02 PM
Subject: [pure-silver] Re: Chromogenic toning?
> Based solely on the two molecular weights CD-3 (436.52)
> and CD-4 (292.34) you
> should use 2/3 the given amount rather than half. Now,
> CD-3 might be faster
> acting accounting for the difference in amounts. You
> would have to do some
> testing.
>
> Jerry
>
I wonder what, if any, advantage chromogenic toning has
over simple dye toning of prints. Dye toning is an old
process where the image is bleached using a bleach that acts
as a mordant for the dye. The only special chemicals needed
are the dyes. Kodak has published at least two bleach
formulas over the years. Perhaps there is a more modern
bleach available.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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