Imageable articles having dye selective interlayers
AssigneeMinnesota Mining and Manufacturing Company
InventorsGlenn S. Prementine, Takuzo Ishida
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Abstract
Imageable articles having dye selective interlayers comprising copolymers of styrene and vinylidene chloride are disclosed. The interlayers have sufficient permeability to be useful for constructions in which cationic dyes must be prevented from diffusing away from an image receiving layer. Additionally, the selective interlayers allow unoxidized leuco dye to be diffused away from an image receiving layer, thereby increasing print stability. Use of these interlayers in multicolor dye-diffusive imaging constructions increases image stability and color density in the final image.
Claims14
An imageable article comprising:
- (a) an image-forming layer;
- (b) adjacent to said image-receiving layer, an image-forming layer comprising a light-insensitive, reducible silver source;
- a light-sensitive silver halide;
- a polymeric binder;
- a sensitizer, and a leuco dye which generates a cationic dye upon oxidization;
- and (c) adjacent to said image-forming layer, a polymeric interlayer comprising a styrene-vinylidene chloride copolymer.
A dry silver photothermographic element comprising a substrate coated on one side thereof with an image-receiving layer, said image-receiving layer having coated thereon at least one image-forming layer which is adjacent to a polymeric interlayer, said polymeric interlayer comprising a styrene-vinylidene chloride copolymer and said image-forming layer comprising a light-insensitive, reducible silver source;
- a light-sensitive silver halide;
- a polymeric binder;
- a sensitizer;
- and a leuco dye which generates a cationic dye upon oxidation.
Dependencies are inferred from the claim text.