Re: why harden gelatin sizing?


Carl Weese (cjweese@wtco.net)
Tue, 02 Nov 1999 16:25:56 -0500


Wayde,

The really interesting part is that the water isn't even "soft": it's
"moderately hard." This is why my speculation is that some trace mineral
in there is nullifying whatever the built-in hardening agent is rather
than directly softening the gelatin, because any standard hardening
fixer works just fine. Even long silver-gelatin fiber-base wash times do
not cause any trouble to the hardened prints. You can use Kodak Rapid
Fix with 1/2 the maximum hardening agent in it and do long washes with
impunity. But with no hardening agent, even the shortest soak time (a la
Ilford quick wash method) leaves prints so soft they stick to or emboss
from the drying screen.---Carl



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