Photothermographic material and image forming method
AssigneeFuji Photo Film Co., Ltd.
InventorTakayoshi Mori
Life of this patent
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Abstract
A 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, and a binder, and an X-ray image forming method using the same, wherein 50% or more of a total projected area of the photosensitive silver halide is occupied by tabular grains having an aspect ratio of 2 or more, and the grains have at least one epitaxial junction portion having a multifold structure. A photothermographic material with high sensitivity and excellent storage stability, and an image forming method using the material are provided.
Claims17
A photothermographic material comprising, on at least one side of a support, an image forming layer comprising at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, wherein 50% or more of the total projected area of the photosensitive silver halide is occupied by tabular grains having an aspect ratio of 2 or more, and the grains have at least one epitaxial junction portion having a multifold structure.
An image forming method using a photothermographic material comprising, on both sides of a support, an image forming layer comprising at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, wherein 50% or more of a total projected area of the photosensitive silver halide is occupied by tabular grains having an aspect ratio of 2 or more, and the grains have at least one epitaxial junction portion having a multifold structure, wherein the method comprises:
- (a) providing an assembly for forming an image by placing the photothermographic material between a pair of fluorescent intensifying screens;
- (b) putting an analyte between the assembly and an X-ray source;
- (c) irradiating the analyte with X-rays having an energy level in a range of from 25 kVp to 125 kVp;
- (d) taking the photothermographic material out of the assembly;
- and
- (e) heating the removed photothermographic material in a temperature range of from 90° C. to 180° C.
Dependencies are inferred from the claim text.