Abstract: A silver halide color photographic light-sensitive material, having photographic constituting layers including, on a support, at least one blue-sensitive layer containing a silver halide emulsion, at least one green-sensitive layer containing a silver halide emulsion, at least one red-sensitive layer containing a silver halide emulsion, and at least one hydrophilic colloidal layer, in which a silver chloride content is 95 mol % or more and a silver iodide content is from 0.05 to 0.3 mol % in the silver halide emulsion of the red-sensitive layer, and in which the difference between spectral sensitivities at wavelength of 685 nm and 590 nm is from 1.2 to 2.5 log E or the difference between spectral sensitivities at wavelength of 660 nm and 590 nm is 0.8 to 2.0 log E, for a distribution of the spectral sensitivities when the material is exposed to lights equal in energy at each wavelength.

Abstract: A silver halide color photographic light-sensitive material, having photographic constituting layers including, on a support, at least one blue-sensitive layer containing a silver halide emulsion, at least one green-sensitive layer containing a silver halide emulsion, at least one red-sensitive layer containing a silver halide emulsion, and at least one hydrophilic colloidal layer, in which a silver chloride content is 95 mol % or more and a silver iodide content is from 0.05 to 0.3 mol % in the silver halide emulsion of the red-sensitive layer, and in which the difference between spectral sensitivities at wavelength of 685 nm and 590 nm is from 1.2 to 2.5 log E or the difference between spectral sensitivities at wavelength of 660 nm and 590 nm is 0.8 to 2.0 log E, for a distribution of the spectral sensitivities when the material is exposed to lights equal in energy at each wavelength.

Abstract: A process for producing a photosensitive silver halide emulsion is disclosed, comprising silver halide grains and a dispersion medium, said process comprising steps of adding a water-soluble silver solution, an aqueous alkali halide solution and an aqueous solution of gelatin having a molecular weight of 5,000 to 30,000 or less to a mixing vessel different from a reactor for the production of emulsion to prepare silver halide fine grains, adding the silver halide fine grains to the reactor for the production of emulsion to grow silver halide grains, and ultrafiltering the silver halide grains during the addition of silver halide fine grains, wherein 50% or more of the entire projected area of said emulsion grains is occupied by silver halide tabular grains having an aspect ratio of 10 or more and a thickness of 0.15 &mgr;m or less.

Abstract: A process for producing a photosensitive silver halide emulsion is disclosed, comprising silver halide grains and a dispersion medium, said process comprising steps of adding a water-soluble silver solution, an aqueous alkali halide solution and an aqueous solution of gelatin having a molecular weight of 5,000 to 30,000 or less to a mixing vessel different from a reactor for the production of emulsion to prepare silver halide fine grains, adding the silver halide fine grains to the reactor for the production of emulsion to grow silver halide grains, and ultrafiltering the silver halide grains during the addition of silver halide fine grains, wherein 50% or more of the entire projected area of said emulsion grains is occupied by silver halide tabular grains having an aspect ratio of 10 or more and a thickness of 0.15 &mgr;m or less.

Abstract: A silver halide emulsion is described, comprising at least a dispersion medium and silver halide grains, wherein said silver halide grains have an average grain size of from 0.005 to 0.1 &mgr;m and a hexacyano metal complex represented by formula (I) is present on the outermost surface of the silver halide grain: [M(CN)6]n−  (I) wherein M represents Fe, Ru, Os, Co, Rh, Ir, Cr or Re, and n represents 3 or 4. Also described are a method for producing the emulsion, and a silver halide light-sensitive material and a photothermographic material using the emulsion.

Abstract: A process for producing a photosensitive silver halide emulsion is disclosed, comprising silver halide grains and a dispersion medium, said process comprising steps of adding a water-soluble silver solution, an aqueous alkali halide solution and an aqueous solution of gelatin having a molecular weight of 5,000 to 30,000 or less to a mixing vessel different from a reactor for the production of emulsion to prepare silver halide fine grains, adding the silver halide fine grains to the reactor for the production of emulsion to grow silver halide grains, and ultrafiltering the silver halide grains during the addition of silver halide fine grains, wherein 50% or more of the entire projected area of said emulsion grains is occupied by silver halide tabular grains having an aspect ratio of 10 or more and a thickness of 0.15 &mgr;m or less.

Abstract: Provided is a photothermographic material having, on one surface of its support, at least one type of photosensitive silver halide grains, a non-photosensitive silver salt of an organic acid, a reducing agent for silver ions, and a binder; which contains an organic polyhalogen compound of the following general formula (I) and in which the silver halide grains have a hexacyano-metal complex of the following general formula (II) in their outermost surfaces: wherein Q represents an alkyl group optionally having one or more substituents, an aryl group optionally having one or more substituents, or a heterocyclic group optionally having one or more substituents; X1 and X2 each independently represent a halogen atom; Z represents a hydrogen atom or an electron-attracting group; Y represents —C(═O)—, —SO— or —SO2—; and n indicates 0 or 1; [M(CN)6]n−  (II) wherein M represents Fe, Ru, Os, Co, Rh, Ir, Cr or Re; and n indicates 3 or

Abstract: Provided is a photothermographic material having, on one surface of its support, at least one type of photosensitive silver halide grains, a non-photosensitive silver salt of an organic acid, a reducing agent for silver ions, and a binder; which contains a compound of the following general formula (I) and in which the silver halide grains have a hexacyano-metal complex of the following general formula (II) in their outermost surfaces: wherein R11, R12, R13 and R14 may be the same or different, and each independently represents a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a nitro group, a cyano group, a carboxyl group or its salt, a sulfo group or its salt, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heterocyclic group, or a group of R15—D—; where R15 represents a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a nitro group, a cyano group a carboxyl group or its salt, a sulfo group or its salt, an alkyl group, an alk

Abstract: A surface latent image type silver halide photographic material comprises a support and at least one surface latent image type silver halide emulsion layer provided thereon. Surface latent image type silver halide grains of the emulsion layer contain a cyano-chromium-complex ion represented by the formula (I):?Cr(CN).sub.6-n L.sub.n !.sup.m- (I)wherein L is H.sub.2 O or OH; n is 0 or 1; and m is 3 or 4.

Abstract: A silver halide photographic material comprising a support and a silver halide emulsion layer provided thereon. The silver halide emulsion is prepared by nuclear formation, crystal growth and chemical sensitization. All or a part of the nuclear formation or the crystal growth is conducted in the presence of a hexa-coordinated cyano-complex to introduce the complex into crystal lattice of the silver halide. The density of the hexa-coordinated cyano-complex contained in surface parts of silver halide grains is in the range of 10.sup.-4 to 10.sup.-2 mol per 1 mol of silver. The surface parts of silver halide grains has a thickness of not more than 20.ANG. from the surfaces of the grains. The chemical sensitization is conducted using a gold sensitizer. The silver halide emulsion is prepared using a synthetic polymer as a protective colloid in place of gelatin. In the cases in which gelatin is used, it is present in an amount of not more than 10 g per 1 mol of silver.