Silver salt photothermographic material
AssigneeKonica Corporation
InventorKiyokazu Morita
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Abstract
A silver salt photothermographic material is disclosed, comprising on a support a light-sensitive layer comprising an organic silver salt, light-sensitive silver halide grains, a reducing agent and a binder, wherein after the photothermographic material having been developed at a temperature of not less than 100° C. is subjected to exposure to light of an illumination intensity of 300 lux at 45° C. for 24 hrs., the rate of variation in fog density between before and after exposure is not more than 30%, based on the fog density of the photothermographic material before exposure.
Claims13
A photothermographic material comprising on a support a light-sensitive layer comprising an organic silver salt, light-sensitive silver halide grains, a reducing agent and a binder, wherein the photothermographic material exhibits not more than 30% of a rate of variation in fog density defined below:
- Rate of variation in fog density=(DFog2−DFog1)/DFog1×100(%)
- wherein DFog1 is a minimum density of the photothermographic material that has been subjected to development at a temperature of not less than 100° C. and DFog2 is a minimum density of the photothermographic material that has been subjected to the development and then further subjected to exposure to light at an illumination intensity of 300 lux and a temperature of 45° C. for 24 hours,
- and wherein the light-sensitive layer comprises a binder having a glass transition point of 70 to 105° C.
A photothermographic material comprising on a support a light-sensitive layer comprising an organic silver salt, light-sensitive silver halide grains, a reducing agent and a binder, wherein the photothermographic material exhibits not more than 30% of a rate of variation in fog density defined below:
- Rate of variation in fog density=(DFog2−DFog1)/DFog1×100(%)
- wherein DFog1 is a minimum density of the photothermographic material that has been subjected to development at a temperature of not less than 100° C. and DFog2 is a minimum density of the photothermographic material that has been subjected to the development and then further subjected to exposure to light at an illumination intensity of 300 lux and a temperature of 45° C. for 24 hours,
- and wherein the light-sensitive layer comprises an organic gelling agent.
Dependencies are inferred from the claim text.