U of S | Mailing List Archive | alt-photo-process-l | Re: archivalness of gum

Re: archivalness of gum

From: Yves Gauvreau <gauvreau-yves@cgocable.ca>
Subject: Re: archivalness of gum
Date: Fri, 21 Dec 2007 12:12:58 -0500

> Out of curiosity, wouldn't it be appropriate to also
> consider the gelatin and/or whatever else is used with the
> pigment(s) in the archivalness equation?

At least in the case of silver image, metallic silver in
gelatin is significantly more stable than binderless silver.
One can interpret this to mean that, if both are untoned,
silver gelatin image is more stable than binderless silver
processees, due to the use of gelatin in the former.

However, the image protection from sulfiding toning is much
more powerful than gelatin alone.

Ryuji Suzuki
"Patriotism is the last refuge to which a scoundrel clings."
(Bob Dylan, Sweetheart Like You, 1983)