Silver halide photosensitive material and method for forming image

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 binder and a colorant which releases or diffuses a diffusive dye in proportion or in reverse proportion of the silver development,

• 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 by removing part or all of the released or diffused diffusive dye through transfer thereof from the photosensitive material to the processing material, wherein
• said 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 wherein
• said 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.