Black and white photothermographic material and image...

Details Black and white photothermographic material and image... Black and white photothermographic material and image...

2006-10-03

2006-10-03

Letscher, Geraldine (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

C430S570000, C430S617000, C430S618000, C430S619000, C430S620000, C430S348000, C430S349000, C430S350000

Reexamination Certificate

active

07115358

ABSTRACT:
The present invention provides a black and white photothermographic material having, on at least one side of a support, an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions, and a binder, as well as an image forming method. The black and white photothermographic material is characterized in that 1) the non-photosensitive organic silver salt includes at least one compound selected from the group consisting of a silver salt of an azole compound and a silver salt of a mercapto compound, and 2) the photosensitive silver halide has a spectral sensitizing dye in the form of a multilayer adsorbed on its surface.According to the invention, an improved black and white photothermographic material and image forming method realizing high sensitivity, favorable gradation, and less dependence on developing process conditions are provided.

REFERENCES:
patent: 6576410 (2003-06-01), Zou et al.
patent: 6649337 (2003-11-01), Hioki et al.
patent: 2005/0208437 (2005-09-01), Ohzeki
patent: 2005/0214702 (2005-09-01), Ohzeki

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