Silver salt photothermographic dry imaging material

Details Silver salt photothermographic dry imaging material Silver salt photothermographic dry imaging material

2006-08-29

2006-08-29

Letscher, Geraldine (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

C430S618000, C430S619000, C430S620000, C430S567000

Reexamination Certificate

active

07097962

ABSTRACT:
A photothermographic imaging material containing a support having thereon light-insensitive organic silver salt grains, photosensitive silver halide grains, a reducing agent for silver ions and a binder, wherein, (i) each of the organic silver salt grains has a structure having different silver ion dissociation constants at a surface portion and at an inner portion of the grain; (ii) each of the silver halide grains produces a larger number of latent images in a surface portion than in an inner portion of the grain by exposure to light; (iii) each of the silver halide grains produces a larger number of latent images in the inner portion than in the surface portion of the grain after being subjected to a thermal development; and (iv) a surface photographic speed of each of the silver halide grains decreases after being subjected to the thermal development.

REFERENCES:
patent: 2003/0203323 (2003-10-01), Takiguchi et al.
patent: 2005/0064352 (2005-03-01), Suzuki et al.
patent: 1 168 069 (2002-01-01), None
patent: 1 345 075 (2003-09-01), None
patent: 63-60446 (1988-03-01), None
European Search Report for Application No. 04024855.1-1217-Dated Dec. 9, 2004.
JP63060446 English Abstract for JP 63-60446.

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