Method for improving the conservation of a photographic product with a cellulose ester type support
AssigneeEastman Kodak Company
InventorsOlivier J. Poncelet, Jeannine Rigola, Boualem Mekki
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Abstract
The present invention improves the conservation of a photographic product with a cellulose ester type support. The present invention involves coating on the support or the photographic product with a transparent film-forming aqueous composition. The composition is a fibrous alumino-silicate polymer of formula Al.sub.x Si.sub.y O.sub.z in which x:y is between 1 and 3, and z is between 2 and 6. The support can be treated before the application of the photographic layers (as a substratum or under-layer) or after the application of the photographic layers (as a top layer). It is also possible to treat an exposed, developed film by applying a top layer of the said composition.
Claims3
A photographic element comprising
- a cellulose ester support;
- at least one silver halide light-sensitive layer superposed on said support;
- a transparent top layer superposed on said light-sensitive layer comprising a fibrous alumino-silicate polymer of the formula Al.sub.x Si.sub.y O.sub.z wherein x is between 1 and 3, y is between 1 and 3 and z is between 2 and 6 and a water-soluble binder selected from the group consisting of proteinaceous hydrophilic polymers, cellulose derivatives, polyalkylene glycols and polyvinyl alcohols.
Dependencies are inferred from the claim text.