Photothermographic, composition using a phenolic leuco dye as a reducing agent
AssigneeEastman Kodak Company
InventorsRolf S. Gabrielsen, Felice M. Cerquone
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Abstract
In a photothermographic element, composition or process for producing developed images employing processing with heat, a combination comprising (a) photographic silver halide in association with (b) a silver salt of a long-chain fatty acid and (c) a phenolic leuco dye reducing agent for the silver salt of a long-chain fatty acid provides an image in color. After imagewise exposure of the photothermographic element or composition, a color image can be obtained by heating the photothermographic element or composition containing this combination. This combination can be in a diffusion transfer, photothermographic element.
Claims12
A photothermographic element for producing developed, color images consisting essentially of a support having coated thereon
- a. photographic silver halide in association with
- b. a silver salt of a long-chain fatty acid containing 10 to 30 carbon atoms,
- c. a phenolic leuco dye reducing agent for said silver salt of a long-chain fatty acid, and
- d. a synthetic polymeric binder, said leuco dye reducing agent being oxidizable imagewise.
A photothermographic element consisting essentially of a support having coated thereon
- a. photographic silver halide in association with
- b. silver behenate,
- c. a phenolic reducing agent for said silver behenate,
- d. a development modifier comprising phthalazinone, succinimide, or N-hydroxy-1,8-naphthalimide,
- e. a poly(vinyl butyral) binder, and
- f. a phenolic leuco dye reducing agent for said silver behenate, said dye reducing agent being oxidizable imagewise.
A photothermographic composition consisting essentially of
- a. photographic silver halide in association with
- b. a silver salt of a long-chain fatty acid containing 10 to 30 carbon atoms,
- c. a phenolic leuco dye reducing agent for said silver salt of a long-chain fatty acid, and
- d. a synthetic, polymeric binder.
A photothermographic composition comprising
- a. photographic silver halide in association with
- b. silver behenate,
- c. 2-(3,5-di-tert-butyl-4-hydroxyphenyl)-4,5-diphenylimidazole, and
- d. a poly(vinyl butyral) binder.
A photothermographic composition comprising
- a. photographic silver halide in association with
- b. silver behenate,
- c. 2-(4-hydroxy-3,5-dimethoxy)-4,5-bis(p-methoxyphenyl)imidazole, and
- d. a poly(vinyl buryral) binder.
A photothermographic composition comprising
- a. photographic silver halide in association with
- b. silver behenate,
- c. bis-(3,5-di-tert-butyl-4-hydroxyphenyl)phenylmethane, and
- d. a poly(vinyl butyral) binder.
Dependencies are inferred from the claim text.