Protective overcoat comprising polyester ionomers for photographic elements
AssigneeEastman Kodak Company
InventorsMridula Nair, Tamara K. Jones, Joseph S. Sedita, David M. Teegarden, Bobbi A. Wohlschlegel
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Abstract
The present invention is directed to a photographic element comprising a support, at least one silver halide emulsion layer superposed on the support, and a processing-solution-permeable protective overcoat overlying the silver halide emulsion layer. The processing solution permeable overcoat is composed of a polyester ionomer. The present invention is also directed to a method of making a photographic print involving developing the photographic element. The imaged photographic element exhibits water, stain, and wet-abrasion resistance.
Claims17
A photographic imaging element comprising:
- a support;
- at least one light sensitive silver halide emulsion layer superposed on the support;
- and
- an overcoat layer overlying the at least one light sensitive silver halide emulsion layer, which overcoat comprises a polyester ionomer and a water-soluble polymer selected from the group consisting of a polyvinyl alcohol, n-vinyl amide, poly(ethylene oxide), and poly(ethyl oxazoline), wherein at least 30 weight percent of the water-soluble polymer is capable of being washed out during RA4 photographic processing.
A method of making a photographic print comprising:
- (a) providing a photographic element comprising a support, a silver-halide emulsion layer superposed on a side of said support, a processing-solution-permeable overcoat overlying the silver-halide emulsion layer, said protective overcoat comprising a polyester ionomer having ionic or ionizable functionalities, said overcoat further comprising a water-soluble or solubilizable hydrophilic polymer wherein at least 30 weight percent of the water-soluble polymer is washed out during photographic processing;
- (b) imagewise exposing the photographic element to light;
- (c) developing the photographic element in a developer solution having a pH greater than 7 to obtain the photographic print;
- and
- (d) optionally fusing the processing solution permeable overcoat.
Dependencies are inferred from the claim text.