Abstract: Disclosed is a silver halide photographic light-sensitive material wherein a silver halide emulsion layer and/or a hydrophilic colloid layer contains at least one hydrazine derivative, and a silver halide emulsion is spectrally sensitized with a particular dye, and which contains a benzotriazol compound. There is provided a silver halide photographic light-sensitive material that exhibits superior residual color property and can provide stable photographic performance even after a long term running with a reduced silver amount.

Abstract: Disclosed is a silver halide photographic light-sensitive material comprising at least one silver halide emulsion layer on a support, wherein 40 mol % or more of silver halide contained in the silver halide emulsion layer is silver bromide and the silver halide contains 1×10−6 mole or more per mole of silver of a metal complex containing one or more cyanide ligands, and the silver halide photographic light-sensitive material has a characteristic curve drawn in orthogonal coordinates of logarithm of light exposure (x-axis) and optical density (y-axis) using equal unit lengths for the both axes, on which gamma is 4.0 or more for the optical density range of 0.1-1.5. There is provided a silver halide photographic light-sensitive material showing high contrast and high sensitivity.

Abstract: Disclosed are a silver halide photographic light-sensitive material comprising silver halide containing a metal complex having a cyanide ligand in a silver halide emulsion layer and comprising a hydrazine compound having an onium group in the molecule, and a method of developing the silver halide photographic light-sensitive material with a developer having a pH of 9.0-11.0. The silver halide photographic light-sensitive material of the present invention can provide high sensitivity, high processing stability and high contrast images.

Abstract: Disclosed is a photothermographic material containing a photosensitive silver halide, a non-photosensitive silver salt of an organic acid, a reducing agent for silver ions and a binder on one surface of a support, wherein a ratio of twin crystal grains of the photosensitive silver halide is 1.0% or less with respect to the total grain number of the photosensitive silver halide. This photothermographic material shows high sensitivity, low fog, high Dmax (maximum density) and little increase of fog during storage.

Abstract: Disclosed is a photothermographic material containing at least a photosensitive silver halide, a non-photosensitive silver salt of an organic acid, a reducing agent for silver ions and a binder on one surface of a support, wherein the material contains a compound producing imagewise a chemical species that can form development initiation points on and in the vicinity of the non-photosensitive silver salt of an organic acid or the like and an organic gold compound and the photosensitive silver halide has a mean grain size of 0.12 &mgr;m or less. This photothermographic material shows high sensitivity, low fog, high Dmax (maximum density), little increase of fog during storage and low temperature and humidity dependency during development.

Abstract: A silver halide photographic material is described, which comprises a support having provided thereon at least one light-sensitive silver halide emulsion layer and at least one light-insensitive hydrophilic colloid layer, wherein the at least one light-sensitive silver halide emulsion layer contains at least two kinds of silver halide emulsions having different speeds, the light-insensitive hydrophilic colloid layer contains at least one kind of light-insensitive silver halide grains, the silver halide emulsion layer or the light-insensitive hydrophilic colloid layer contains at least one kind of hydrazine derivative as a nucleating agent, and at least one kind of compound selected from the group consisting of an amine derivative, an onium salt, a disulfide derivative and a hydroxymethyl derivative as a nucleation accelerator. A method for processing the silver halide photographic material is also described.

Abstract: In a photothermographic material having an image-forming layer and a protective layer on a support, (A) a nucleating agent having a particular structure is added to at least one of the layers formed on the image-forming layer side of the support and NH4+ content in all the layers formed on the image-forming layer side is controlled to be 0.06 mmol/m2 or less, or (B) a nucleating agent and an organic acid compound having a particular structure are added to at least one of the layers formed on the image-forming layer side so that film surface pH is substantially unchanged. This photothermographic material is characterized by low fog, high Dmax, little increase of fog during storage and little temperature and humidity dependency upon heat development.

Abstract: There is disclosed a silver halide photographic light-sensitive material, which comprises a support having thereon at least one spectrally sensitized light-sensitive silver halide emulsion layer, wherein the silver halide emulsion layer contains at least two kinds of silver halide emulsions, which are different in the concentration of at least one nitrogen-containing heterocyclic compound capable of forming a complex with silver, and wherein the emulsion layer or another hydrophilic colloid layer contains at least one hydrazine derivative, as a nucleating agent, and at least one of amine derivatives, onium salts, disulfide derivatives, or hydroxymethyl derivatives, as a nucleating accelerator. The light-sensitive material is high in sensitivity, extremely high in contrast, and high in blackening density; it makes both saving of a sensitizing dye and low dye stain possible; and the change in sensitivity is small in the production thereof.

Abstract: There is disclosed a silver halide photographic light-sensitive material comprising a support having thereon at least one of spectrally sensitized light-sensitive silver halide emulsion layers, wherein at least one of the silver halide emulsion layers contains at least two kinds of silver halide emulsions, at least one kind of the emulsions being one in which silver halide grains have been formed and grown in the presence of at least one of nitrogen-containing heterocyclic compounds that are capable of forming a complex with silver; and at least one kind of the emulsions being one in which silver halide grains have been formed and grown in the absence of nitrogen-containing heterocyclic compounds that are capable of forming a complex with silver, and wherein at least one of the said emulsion layers or another hydrophilic colloid layer contains at least one hydrazine derivative nucleating agent, and also at least one nucleating accelerator selected from a group consisting of amine derivatives, onium salts, dis

Abstract: A method for producing a silver halide emulsion comprising tabular silver halide grains having a silver chloride content of 80% or more, the tabular silver halide grains having {100} planes as the main planes and an aspect ratio of 1.5 or more accounting for 10% or more of the total projected area of the grains, with the main planes in the form of a right-angled parallelogram having defects in at least one corner thereof, and with the grains being produced in the presence of a grain growth modifier.