초록 ▼

Disclosed is a silver halide photosensitive material comprising a support and a photosensitive layer formed thereon. The photosensitive layer comprises at least a photosensitive silver halide emulsion, a developing agent, a compound which forms a dye by a coupling reaction with an oxidized form of t

Disclosed is a silver halide photosensitive material comprising a support and a photosensitive layer formed thereon. The photosensitive layer comprises at least a photosensitive silver halide emulsion, a developing agent, a compound which forms a dye by a coupling reaction with an oxidized form of the developing agent, and a binder. The silver halide photosensitive material after the exposure thereof is put together with a processing material, which comprises a processing layer containing at least a base and/or a base precursor, in the presence of water supplied between the layer of the silver halide photosensitive material and the layer of the processing material in an amount ranging from 1/10 to the equivalent of an amount which is required for the maximum swelling of the total of the layers of these materials excluding back layers thereof, and these materials are heated to form a color image in the silver halide photosensitive material, in which the photosensitive layer comprises gelatin which is modified so that the interaction thereof with silver is reduced, and a silver halide emulsion in which tabular silver halide grains, each having an aspect ratio of 2 or more, account for 50% or more of the total projected area of the silver halide grains of the emulsion. Also disclosed is a method for forming an image by using this silver halide photosensitive material.

대표청구항 ▼

[ What is claimed is:] [1.] A silver halide photosensitive material comprising a support and at least one photosensitive layer formed thereon, said photosensitive layer comprising at least a photosensitive silver halide emulsion, a developing agent, a compound, which forms a dye by a coupling reacti

[ What is claimed is:] [1.] A silver halide photosensitive material comprising a support and at least one photosensitive layer formed thereon, said photosensitive layer comprising at least a photosensitive silver halide emulsion, a developing agent, a compound, which forms a dye by a coupling reaction with an oxidized form of the developing agent, and a binder,said silver halide photosensitive material after the exposure thereof being put together with a processing material, which comprises a support and a processing layer coated thereon containing at least a base and/or a base precursor, in the presence of water supplied between the layer of the silver halide photosensitive material and the layer of the processing material in an amount ranging from 1/10 to the equivalent of an amount which is required for the maximum swelling of the total of the layers of these materials excluding back layers thereof so that the layers face each other, and being heated to form a color image in the silver halide photosensitive material, whereinsaid photosensitive layer comprises gelatin which is modified so that the interaction thereof with silver is reduced, and a silver halide emulsion in which tabular silver halide grains, each having an aspect ratio of 2 or more where the aspect ratio is defined as a value obtained by dividing the projected grain diameter by the grain thickness, account for 50% or more of the total projected area of the silver halide grains of the emulsion, and whereinsaid gelatin is (i) a gelatin having an --NH.sub.2 group content of 720 .mu.mol or less per gram of gelatin and contains a --COOH group and a derivative thereof in an amount of 1,200 .mu.mol or more per gram of gelatin, or (ii) a gelatin having an --NH.sub.2 group content of 720 .mu.mol or less per gram of gelatin and contains an --SO.sub.3 H group and a derivative thereof in an amount of 5 .mu.mol or more per gram of gelatin.