Radiation imagery chemistry: process – composition – or product th – Silver halide colloid tanning process – composition – or product
Patent
1996-04-25
1997-03-11
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Silver halide colloid tanning process, composition, or product
430628, 430640, 430599, 430602, G03C 104, G03C 1295
Patent
active
056099860
ABSTRACT:
The present invention relates to a process for improving the ageing properties of a silver halide photographic element, free of photolytically generated latent images, comprising a support bearing at least one light-sensitive silver halide emulsion layer and at least one light-insensitive layer, the silver halide light-sensitive emulsion layer including negative acting surface latent image-type silver halide grain in association with a contrast promoting agent and a hydrazine compound, by adding a total amount of at least 0.40 grams per square meter of dextran to at least said light-sensitive silver halide emulsion layer and/or to at least said light-insensitive layer.
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Celada Antonella
Feduzi Rino
Selvaggio Salvatore
Soncini Cristina
Zullo Ivo
Evearitt Gregory A.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing
Schilling Richard L.
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