Abstract: A heat developing photosensitive material is disclosed, comprising silver halide, a binder, a reducing agent and a heat solvent, wherein said heat solvent is at least one selected from the group consisting of compounds represented by Formulae I, II and III: ##STR1##

Abstract: A positive image forming method is disclosed. Said method comprises in sequence the steps of subjecting to imagewise exposure a silver halide photographic material having a silver halide emulsion layer containing a non-prefogged internal image forming silver halide, increasing the surface sensitivity of said silver halide in the substantial absence of water and performing development.

Abstract: A thermally developable light-sensitive material is disclosed that the said material has at least one light-sensitive silver halide containing layer on a support and which further contains a compound represented by the general formula (I):X (J.sub.m F).sub.n (I)wherein X is the residue of the development restrainer; J is a divalent linkage; F is an immobilizing group that is capable of reducing the diffusibility of the compound of formula (I) or a silver salt or silver complex thereof during thermal development; m is 0 or 1; and n is an integer of 1 to 3.

Abstract: A silver halide color photographic light-sensitive material has a support and at least one silver halide emulsion layer. At least one of the silver halide emulsion layers has a group of substantially monodisperse core/shell type silver halide grains having a value of not greater than 0.15. This value is obtained by dividing a standard deviation value by the average grain size value. The substantially monodisperse core/shell-type silver halide grains have shells from 0.01 to 0.1 in thickness. The silver halide grains include a silver iodide in the core in an amount of less than 8 mole % and a silver iodide in the shell of from 0.1 mole % to 6 mole %. A development inhibitor releasing compound having a relative development inhibitability of not less than 1 is also present in the emulsion layer.

Abstract: In a light-sensitive silver halide photographic material having blue-sensitive, green-sensitive and red-sensitive photosensitive layers on a support and being capable of forming a multi-color image, the improvement wherein at least one of said photosensitive layers comprises a high sensitivity layer and a low sensitivity layer; at least one of said high sensitivity layers contains flat plate silver halide grains with an average aspect ratio of 5:1 or higher; and at least one of said low sensitivity layer contains an emulsion comprising silver halide grains which are substantially mono-dispersed.

Abstract: Disclosed is a light-sensitive silver halide color photographic material comprising a support and a plurality of silver halide emulsion layers on the support, the emulsion layers being substantially identical in color sensitivity but different in sensitivity and containing at least one of a dye image-forming coupler, characterized in that silver halide grains contained in at least one layer of the plurality of silver halide emulsion layers consist substantially of monodispersed silver halide grains, a color concentration of the emulsion layer comprising the monodispersed silver halide grains being within the range of 60 to 98% of the total color concentration of the plurality of silver halide emulsion layers.The employment of the monodispersed silver halide grains of this invention and the increase in a concentration of the grains in the emulsion layers permit the improvement of graininess, the enlargment of exposure range and better of stability to processing and stability with time.

Abstract: A silver halide color photographic light-sensitive material comprises a support and at least one light-sensitive layer. This layer has a plurality of silver halide emulsion layers substantially identical in color sensitivity, but differing in speed. The light-sensitive layer is comprised substantially of monodispersed silver halide emulsions A and B, each containing silver halide particles of the core/shell-type. The silver halide particle sizes of emulsions B and A have a ratio, when multiplied by 100, of less than 70 and the silver halide particles of emulsion B have a silver iodide content in their core that is not less than 5 mole % smaller than that of the core of the silver halide particles of emulsion A.

Abstract: A silver halide color photographic light-sensitive material comprising a support having at least one silver halide emulsion layer in which there is provided a polymer coupler and a compound of the formulaAr--O--RO).sub.p H [I]wherein Ar is an aryl group, R is an alkylene group, and p is an integer from to 1 to 3.