Abstract: Photothermographic compositions comprising a photographic silver halide, an organic silver salt, and a reducing agent for the organic silver salt, display improved stability in the presence of a compound having a nucleus of the formula:A--(CH.sub.2).sub.n --X--(CH.sub.2).sub.n --Awherein:A represents any monovalent group for which the corresponding compound AH functions as a post-processing stabilizer,X is S, SO, or SO.sub.2, and n is 1 to 10.

Abstract: Disclosed is a silver halide color photographic material having at least one light-sensitive emulsion layer on a support, in which at least 50%, as the total projected area, of all the silver halide grains in at least one light-sensitive emulsion layer are tabular grains having a mean aspect ratio of 2 or more and at least one layer constituting the material contains a coupler of the following formula (I) and/or a coupler of the following formula (II): ##STR1## where X.sup.1 and X.sup.2 each represents an alkyl group, an aryl group, or a heterocyclic group; X.sup.3 represents an organic residue forming a nitrogen-containing heterocyclic group along with >N-- in the formula; Y represents an aryl group or a heterocyclic group; and Z represents a group capable of being released from the formula when the coupler of the formula reacts with an oxidation product of a developing agent. The material preferably contains a compound of formula (A):Q--SM.sup.

Abstract: A silver halide photographic material is disclosed, comprising at least one sensitizing dye represented by formula (I): ##STR1## wherein V.sub.1, V.sub.2, V.sub.3, V.sub.4, V.sub.5 and V.sub.6 each represents a substituent with the total of the Hammett's constants of all the substituents being less than -0.27, R.sub.1 and R.sub.2 each represents an alkyl group, L.sub.1, L.sub.2, L.sub.3, L.sub.4, L.sub.5, L.sub.6 and L.sub.7 each represents a methine group, m represents 0 or 1, Z represents an atomic group necessary for forming a 5-membered or 6-membered nitrogen-containing hetero ring, X.sub.n represents a charge balancing counter ion(s), n has a value of at least 0 which is necessary for neutralizing the charge of the compound. The material has a high sensitivity to infrared rays and gives an image of high quality with little remaining color. Also disclosed is a method for processing such a silver halide photographic material.

Abstract: The invention is generally accomplished when a heavy metal compound and a substituted thiourea sensitizer are used together as chemical sensitizers. There is a surprising increase in photographic efficiency and, therefore, in photographic sensitivity. This effect does not depend on the presence of a dye. The preferred heavy metal compound is potassium hexachloroiridate (IV), and the preferred thiourea is 3-acetamidophenyl thiourea.

Abstract: Thermal recording material containing a suitable substrate coated with an image forming layer. The image forming layer contains a thermally reducible source of silver, a 3-indazolinone or urea compound; a polymeric binder; and optionally, an auxiliary reducing agent and toner. Preferably, an anti-stick layer is coated on top of the imaging layer.The 3-indazolinone and urea compounds have been found to enhance the thermal image forming capability of thermal recording material.

Abstract: A silver halide photographic material comprises a silver halide emulsion layer provided on a support. In the photographic material of the present invention, the silver halide emulsion is sensitized with a new tellurium sensitizer. The tellurium sensitizer is represented by the formula (I) or (II): ##STR1## in which each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently is an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group, a heterocyclic group or an acyl group; at least two of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are combined with each other to form a heterocyclic ring; R.sup.5 is an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group or a heterocyclic group; R.sup.6 is --NR.sup.7 R.sup.8, --NR.sup.9 --NR.sup.10 R.sup.11 or --OR.sup.12 ; R.sup.5 and R.sup.6 may be combined with each other to form a heterocyclic ring; each of R.sup.7, R.sup.8, R.sup.9, R.sup.10, R.sup.11 and R.sup.

Abstract: A silver halide photographic material having at least one light-sensitive emulsion layer on a support, wherein at least one light-sensitive emulsion layer has an emulsion containing silver halide grains of silver chlorobromide, silver chloroiodide, silver chloroiodobromide or silver chloride having a silver chloride content of 90 mol % or more, and incorporated with the silver halide grains are an iron compound of from 10.sup.-7 to 10.sup.-3 mol per mol of silver halide, and a tellurium compound of from 10.sup.-7 to 10.sup.-4 mol per mol of silver halide, before completion of physical ripening of the grains. The photographic material of the present invention is exposed for a short time period of 10.sup.-3 second or less and then color-developed to form a photographic image. The material has high sensitivity and high contrast and has excellent rapid processability.

Abstract: A method of preparing a superfine grain emulsion with a grain size of 0.05 .mu.m or less is provided, which includes mixing aqueous solutions of a water-soluble silver salt and a water-soluble halide with vigorous stirring inside a closed mixing device furnished with an agitator, where the solutions are fed into the device simultaneously and continuously, in the presence of at least one of a high molecular compound and a substance capable of adsorbing to silver halide, each of which has a physical retardance value of at least 40 as determined by PAGI method, and immediately expelling the newly-formed grains from the mixing device. Another method includes mixing the aqueous solutions in a mixing device as described above, immediately expelling the newly-formed grains from the device, and mixing the expelled grains with at least one of the above-described high molecular compound and substance.

Abstract: A light-sensitive silver halide photographic material that can give an improved blackness of the silver-formed image by the development, having a high sensitivity with a high covering power, is disclosed. The material comprises a silver halide emulsion layer containing silver halide tabular grains which have an aspect ratio of not less than 3, covering not less than 50% of the total sum of projected areas, and the layer comprises a compound represented formula I, ##STR1## wherein Rs and Ms represent as specified in the claims.

Abstract: A photographic direct positive material is disclosed comprising a support and one or more radiation sensitive emulsion layers containing internal latent image-forming silver halide grains characterized in that at least one of said emulsion layers further contains a masked stabilizer corresponding to general formula (I): ##STR1## wherein Z represents a lower alkyl group, a nitro group or a halogen atom, n=0 to 4, and M represents a positive counterion.Preferred compounds are 1-(2-sulphonatobenzoyl)-5-methyl-benzotriazole, 1-(2-sulphonatobenzoyl)-6-methyl-benzotriazole or a mixture of both.The masked stabilizer is preferably incorporated in the emulsion layer(s). The material preferably further contains a nucleating agent. Improved direct positive sensitometric properties and wider exposure latitude before encountering rereversal are obtained.

Abstract: This invention provides gold(I) complexes comprising sulfur- and selenium-substituted macrocyclic polyether ligands, photographic elements containing the compounds, and emulsions containing the compounds. The compounds include monomers and dimers having the following formulas, respectively:[AuL].sup.+ X.sup.- or [AuL].sub.2.sup.2+ 2X.sup.-wherein X.sup.- is any suitable anion such as tetrafluoroborate, nitrate, etc., and wherein L is a macrocyclic ligand containing at least two thioether and/or selenoether linkages and comprising from about 12 to about 30 members in the ring. The general structural formula for the macrocyclic compounds L may be represented as follows: ##STR1## wherein Q.sub.1 and Q.sub.2 are each independently sulfur or selenium, and R.sub.1 and R.sub.

Abstract: The improved silver halide color photographic material having as photographic constituent layers a blue-sensitive, a green-sensitive and a red-sensitive silver halide emulsion layer, as well as at least one non-light-sensitive hydrophilic colloidal layer on a support is characterized in that at least one of said photographic constituent layers contains at least one of the compounds represented by the following formula: ##STR1## (where R.sub.1 is a hydrogen atom or a monovaluent substituent; and R.sub.2 is a group having a Hammett's value .sigma..sub.p of at least 0.2). This color photographic material is satisfactorily protected against deterioration in photographic performance such as reduced color or gamma, color contamination or increased fog even if it is exposed to formaldehyde and other deleterious gases for a long time of storage before it is subjected to color development and subsequent photographic processing.

Abstract: Disclosed is a light-sensitive silver halide photographic material having at least one silver halide emulsion layer on a support, wherein (1) the silver halide emulsion is spectrally sensitized by a red-sensitive sensitizing dye and contains a macrocyclic compound having at least one hetero atom, (2) a number of aliphatic rings forming the macrocyclic compound is 4 or less, and (3) the macrocyclic compound has an aromatic ring, which has good aging storage stability and excellent safelight safety characteristics, and can provide high sensitivity stably.

Abstract: The present invention is directed to hollow rod-shaped silver halide grains for use in photography and a process for preparation of hollow, rod-shaped grains. The rods have a hexagonal outer periphery, and a hexagonal hollow portion extending longitudinally within the grains.

Abstract: A silver halide color photographic material comprising on a reflective support at least three light-sensitive emulsion layers having different color sensitivities. At least one of the light-sensitive emulsion layers comprises a silver halide emulsion spectrally sensitized with at least one compound represented by the formula (I) in a red sensitive layer. At least one of the light-sensitive emulsion layers or light-insensitive layers comprises on the support at least one compound represented by the formula (II), (III) or (IV). The total amount of silver halide emulsion on the support is 0.65 g/m.sup.2 or less as calculated in terms of coated amount of silver. The formulas are shown and defined in the specification.

Abstract: A silver halide photographic material composed of a support having thereon at least one silver halide emulsion layer containing substantially normal silver halide grains having a (111) plane and a (100) plane and capable of preferentially forming a latent image on the (100) plane; the (111) plane occupying at least about 40% of the surface of the grains or the (100) plane occupying more than about 60% of the surface of the grains; provided that when the (111) plane occupies at least about 40% of the surface of the grains, the grains are spectrally sensitized with (a) at least one spectral sensitizing dye selectively adsorbed more on the (100) plane than on the (111) plane, or (b) at least one spectral sensitizing dye selectively adsorbed more on the (111) plane than on the (100) plane.

Abstract: In a silver halide photographic light-sensitive material having at least one silver halide emulsion layer on a support, light-sensitive silver halide grains contained in the silver halide emulsion layer have been subjected to selenium sensitization, and the silver halide emulsion layer or another hydrophilic colloid layer which is in a water-permeable relationship with the silver halide emulsion layer contains at least one compound represented by formula (I) (wherein Z represents a heterocyclic ring directly or indirectly having at least one substituent group selected from the group consisting of --SO.sub.3 M, --COOR.sub.1, --OH, and --NHR.sub.2, M represents hydrogen, alkali metal, quaternary ammonium, or quaternary phosphonium, R.sub.1 represents hydrogen, alkali metal, or alkyl having 1 to 6 carbon atoms, R.sub.2 represents hydrogen, alkyl having 1 to 6 carbon atoms, --COR.sub.3, --COOR.sub.3, or --SO.sub.2 R.sub.3, and R.sub.

Abstract: A novel silver halide photographic light-sensitive material having at least one silver halide photographic emulsion layer coated on at least one side of a support, wherein said photographic emulsion layer comprises a light-sensitive silver halide emulsion and said photographic emulsion or other layer(s) comprises a substantially light-insensitive, unfogged silver halide fine grain emulsion, with a heterocyclic mercapto compound represented by the following general formula (I) being adsorbed on the fine grains in said emulsion: general formula (I) ##STR1## wherein X represents --O--, --NH--, or --S--; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are a hydrogen atom or a substituent group; at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is a substituted or unsubstituted alkyl or aryl group having up to 13 carbon atoms, such alkyl or aryl being bonded directly or through a divalent linkage group to the aromatic nucleus; X.sub.

Abstract: A silver halide photographic material low in fogging generation and high in sensitivity comprising a silver halide emulsion selenium sensitized with at least one compound selected from the group consisting of compounds represented by general formulae (I) and (III): ##STR1## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group, a heterocyclic group, an acyl group, a carboxyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group or a sulfamoyl group, provided that a tetramethylselenourea is excluded; ##STR2## wherein each of R.sub.8, R.sub.9, R.sub.10 and R.sub.

Abstract: There is disclosed a silver halide photographic material which is sensitized with a novel selenium sensitizer. It provides less fog and markedly little sensitivity degradation during storage under a high temperature and humidity conditions, while providing the same level of a sensitivity. The silver halide photographic material contains at least one compound represented by the following Formula (I): ##STR1## Wherein R.sub.1 represents a substituted phenyl or condensed aryl group, an aliphatic group, a heterocyclic group, OR.sub.4, --NR.sub.5 (R.sub.6), SR.sub.7, SeR.sub.8, X.sub.1, or a hydrogen atom; R.sub.2 and R.sub.3 each represents an aliphatic group, an aromatic group, a heterocyclic group, OR.sub.9, --NR.sub.10 (R.sub.11), SR.sub.12, SeR.sub.13, X.sub.2, or a hydrogen atom; R.sub.5, R.sub.6, R.sub.10 and R.sub.11 each represents an aliphatic group, an aromatic group, a heterocyclic group, or a hydrogen atom; R.sub.4, R.sub.7, R.sub.8, R.sub.9, R.sub.12 and R.sub.

Abstract: Stabilized photographic recording materials are described which comprise ammonium salts of inorganic acids or of organic acids and preferably those that contain polyhydroxyalkyl residues. Use of these stabilizing compounds in combination with recognized antifogging agents provides enhanced storage stability of coated photographic compositions.

Abstract: An infrared sensitive silver halide photographic element is disclosed comprising a support and at least one silver halide emulsion layer spectrally sensitized to the infrared portion of the electromagnetic spectrum. In particular, an infrared sensitive silver halide color photographic element, capable of providing full color images without exposure to corresponding visible radiation, is disclosed, said element comprising at least three silver halide emulsion layers on a substrate, each associated with different photographic color image forming materials, such as color couplers capable of forming dyes of different colors upon reaction with an oxidized color photographic developer, diffusing dyes, bleachable dyes, or oxidable leuco dyes. The three emulsion layers are sensitized to three different portions of the electromagnetic spectrum with at least one layer sensitized to radiation within the infrared region of the electromagnetic spectrum.

Abstract: A silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer containing silver halide grains, wherein said silver halide grains have a silver chloride content of 30 mol% or more and contain (i) and iridium compound in an amount of 10.sup.-6 mol or less per mol of silver halide, (ii) at least one compound selected from the group consisting of iron, rhenium, ruthenium and osmium compounds in an amount of 10.sup.-3 mol or less per mol of silver halide, and (iii) (a) at least one compound selected from the group consisting of compounds represented by general formula (1-a), (1-b) and (1-c): ##STR1## wherein Z represents a C.sub.1-18 alkyl group, a C.sub.6-18 aryl group or a heterocyclic group; Y represents an atomic group required for the formation of a C.sub.

Abstract: A quick-developing highly sensitive silver halide emulsion distinguished by steep gradation, a minimal increase in fog during storage, improved threshold gradation and low sensitivity to below-threshold pre-exposure is obtained by the addition of a diindoyl disulfide during preparation of the emulsion.

Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide photographic emulsion layer containing at least one sensitizing dye represented by formula (I) and at least one compound represented by formula (II). ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represent an alkyl group which may be substituted and at least one of R.sub.1 and R.sub.2 is an acetylaminoalkyl group or an N-alkylcarbamoylaminoalkyl group; and V.sub.1 and V.sub.2, which may be the same or different, each represent a hydrogen atom, an alkyl group, an alkoxy group or a trifluoromethyl group. ##STR2## wherein Z represents a non-metallic atomic group required for forming a heterocyclic ring; M represents a hydrogen atom, an --NH.sub.

Abstract: A silver halide photographic light-sensitive material of this invention is a silver halide photographic light-sensitive material having at least one silver halide emulsion layer on a support, wherein at least one of the silver halide emulsion layers contain at least one compound represented by formula (I): formula (I) ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represent an aliphatic group, an aromatic group, a heterocyclic group, OR.sub.4, NR.sub.5 (R.sub.6), SR.sub.7, OSiR.sub.8 (R.sub.9)(R.sub.10), TeR.sub.11, X, or a hydrogen atom, R.sub.4, R.sub.7, and R.sub.11 each represent an aliphatic group, an aromatic group, a heterocyclic group, a hydrogen atom, or a cation, R.sub.5 and R.sub.6 each represent an aliphatic group, an aromatic group, a heterocyclic group, or a hydrogen atom, R.sub.8, R.sub.9, and R.sub.10 each represent an aliphatic group, and X represents a halogen atom.

Abstract: A method of forming a direct positive color image by imagewise exposing a photographic material having at least one emulsion layer which contains previously non-fogged internal latent image-type silver halide grains, on a support, followed by color-developing the exposed material during or after fogging thereof, wherein the photographic material contains a color sensitizing dye and at least one compound or salt thereof which satisfies the condition-1 as defined in the specification. With the image formed by the method having an elevated maximum image density with a lowered minimum image density, and with the iamge-forming method displaying extremely excellent color reproducibility.

Abstract: A new class of electron-accepting compounds for photographic emulsions is disclosed represented by following general formula (I): ##STR1## wherein: each of Z and Q which may be the same or different represents the atoms necessary to complete an unsubstituted or substituted nitrogen-containing heterocyclic ring;each of T.sub.1 and T.sub.2 which may be the same or different represents alkyl, cycloalkyl, alkoxy, aryl, aryloxy, halogen, cyano, hydroxy, carboxyl, sulfo, carbamoyl, acyl, acylamino, sulfamoyl, sulfonamido or a benzocondensed ring, each of which can be further substituted or not;q=1, 2 or 3, and p and r=0, 1 or 2.In this formula the nitro containing heterocyclic nucleus is preferably nitropyridine or nitrothiazole.In a preferred embodiment of the invention electron-accepting compounds are incorporated in negative or direct positive roomlight emulsions. In the latter case the emulsion layer preferably contains in addition a nitroindazole or nitrobenzimidazole derivative.

Abstract: A method for preparing a silver halide emulsion containing silver halide grains comprising(i) preparing a mixture by mixing a compound represented by the following Formula (1) or (2), and a gold compound; and(ii) performing chemical ripening of the emulsion by adding said mixture thereto: ##STR1## wherein M, R, V and W independently represent a hydrogen atom or a substituent group; V and W may combine with each other to form a ring.

Abstract: A method of preparing a superfine grain emulsion with a grain size of 0.05 .mu.m or less is provided, which includes mixing aqueous solutions of a water-soluble silver salt and a water-soluble halide with vigorous stirring inside a closed mixing device furnished with an agitator, where the solutions are fed into the device simultaneously and continuously, in the presence of at least one of a high molecular compound and a substance capable of adsorbing to silver halide, each of which has a physical retardance value of at least 40 as determined by PAGI method, and immediately expelling the newly-formed grains from the mixing device. Another method includes mixing the aqueous solutions in a mixing device as described above, immediately expelling the newly-formed grains from the device, and mixing the expelled grains with at least one of the above-described high molecular compound and substance.

Abstract: A silver halide photographic material which comprises a support having provided thereon at least one light-sensitive emulsion layer, and which contains in said emulsion layer, or at least one other layer, at least one hydrazine derivative, at least one contrast enhancing agent and at least one redox compound capable of releasing a development inhibitor upon being oxidized. The hydrazine derivative is exemplified by compounds represented by the following formula: ##STR1## wherein R.sub.1 represents an aliphatic group or an aromatic group; R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a carbamoyl group or an oxycarbonyl group; G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, ##STR2## or an iminomethylene group; and A.sub.1 and A.sub.2 both represent a hydrogen atom, or, alternatively, one of them represents a hydrogen atom and the other represents an alkylsulfonyl group, an arylsulfonyl group, or an acyl group.

Abstract: Substituted diaminedithio-containing compounds useful for improving the speed of a silver halide emulsion are described. These compounds can be added in small amounts to the emulsion preferably after the emulsion has been chemically sensitized and just prior to coating. Fog levels are not greatly affected which is surprising since conventional sensitizers generally do increase the fog level.

Abstract: A silver halide photographic emulsion including a spectrally sensitizing dye and at least one compound represented by general formula [I] or general formula [II] are disclosed. ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.4 ', R.sub.5, R.sub.5 ', R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10, R.sub.11 and R.sub.12 represent hydrogen atoms or univalent organic residual groups.

Abstract: A light-sensitive silver halide photographic material comprising a support and provided thereon at least one silver halide emulsion layer containing a pyrazolo azole magenta dye-forming coupler represented by general formula M-I; ##STR1## (wherein Z represents a group of non-metallic atoms necessary to complete a nitrogen-containing heterocyclic ring which may have a substituent; X represents a hydrogen atom or a substituent capable of being split off upon reaction with an oxidation product of a color developing agent; and R represents a hydrogen atom or a substituent), to said silver halide emulsion layer an elementary sulfur having been added at an arbitrary timing before the formation of said silver halide emulsion layer on said support.

Abstract: A photographic laser recording material is disclosed comprising a transparent base and at least one emulsion layer containing a silver halide emulsion which is sensitized to the near infra-red by the combination of a heptamethine chain containing dye according to general formula (I) and a supersensitizer characterized in that said emulsion layer further contains a compound according to general formula (II): ##STR1## wherein, Z.sup.1 and Z.sup.2 represent a non metallic atomic group necessary to complete a benzothiazole, benzoxazole, naphtothiazole or naphtoxazole nucleus; R.sub.5 and R.sub.6 each represent an alkyl or substituted alkyl group;R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each represent a hydrogen atom, a substituted or unsubstituted alkyl, alkoxy, amino, phenyl or benzyl group; R.sub.1 and R.sub.3, or R.sub.2 and R.sub.4 respectively may combine with each other to form a substituted or unsubstituted 5- or 6-membered ring;X-.sub.n is an anion of the type commonly present in sensitizing dyes, e.g.

Abstract: A silver halide light-sensitive material comprising a support having thereon at least one negative silver halide emulsion layer is disclosed, in which a coating weight of the total binder on one side of the support is not more than 4.2 g/m.sup.2 and silver halide grains in the emulsion layer have been subjected to reduction sensitization. The light-sensitive material has improved pressure resistance while exhibiting high sensitivity and suitability for ultra-rapid processing.

Abstract: A silver halide color photographic material comprising a support having thereon at least three silver halide emulsion layers which have different color sensitivities from each other, wherein at least one of the silver halide emulsion layers contains at least one magenta coupler represented by general formula (I) shown below, at least one of the silver halide emulsion layers contains at least one compound represented by general formula (II) shown below, at least one of the silver halide emulsion layers contains at least one compound represented by general formula (III) shown below and the pH of the layers of the silver halide color photographic material is from 5.0 to 6.5: ##STR1## wherein R.sup.1, X, Za, Zb, Zc, Q, M, Z, R.sub.4, R.sub.5, V.sub.1, V.sub.2, V.sub.3, V.sub.4, V.sub.5, V.sub.6, B.sub.7, V.sub.8, and X.sub.n are defined in the specification.

Abstract: A silver halide photographic material comprising a support having thereon at least one sensitive silver halide emulsion layer, wherein said emulsion layer comprises a monodisperse emulsion and said emulsion layer or other hydrophilic colloid layer contains at least one hydrazine derivative and at least one redox compound capable of releasing a development inhibitor when oxidized.

Abstract: The post-processing stability of silver halide photothermographic emulsions is enhanced by the presence of stabilizing amounts of certain azlactones.

Abstract: The invention relates to a novel process for the chemical sensitization of silver halide photographic emulsions.The process according to the invention comprises adding as additional sensitizing agents a 40-260 .mu. moles/mole of a cyclic polyether containing 1 nitrogen and 5 oxygen atoms, or 2 nitrogen and 4 oxygen atoms, or 3 nitrogen and 3 oxygen atoms, or 4 nitrogen and 2 oxygen atoms as well as 12 carbon atoms and/or their complexes formed with gold and/or palladium and optionally 40-260 .mu. moles/mole of silver halide) of gold (I) or gold (III) sulfide to the sulfur-sensitized emulsion, and employing the cyclic polyether in relation to the noble metal salt in a molar ratio of 0.5:1-5:1 for the complex formation.

Abstract: A silver halide photographic light-sensitive material having a support and provided thereon, at least one silver halide emulsion layer containing Compound [I] or Compound [II] represented by Formula [I] or [II] is disclosed; ##STR1##

Abstract: A silver halide photographic emulsion is disclosed, comprising a combination of at least one infrared sensitizing dye represented by formula (Ia) or (Ib) and at least one compound represented by formula (IIa) or (IIb): ##STR1## wherein each of the variables is as defined in the specification.

Abstract: Disclosed is a silver halide photographic material. The material comprises a support and at least one emulsion layer, wherein the emulsion layer includes a silver chlorobromide emulsion. The silver chlorobromide emulsion has been obtained by chemically sensitizing de-salted silver chlorobromide grains in the presence of a nucleic acid or degradation product thereof at a pAg value ranging from about 6.5 to 7.5. The silver chlorobromide grains have been obtained by subjecting the surface of silver halide grains to halogen conversion, which silver halide grains are essentially silver iodide free and have a plurality of phases of which the halogen compositions substanially differ from each other.

Abstract: A silver halide photographic emulsion containing silver halide grains having a silver chloride content of not less than 90 mol % and a method for preparing thereof are disclosed, wherein the silver halide grains are obtained by forming said silver halide grains in the presence of a water-soluble iridium compound and a nitrogen-containing heterocyclic compound capable of forming sparingly-soluble silver salt; and by controlling the addition of said iridium compound, whereby the photographic emulsion is improved in the dependence of gradation on exposure intensity.

Abstract: A silver halide photographic light-sensitive material suitable for rapid processing is disclosed which is prevented in fogging and improved in raw stock storage stability. The photographic material comprises photographic component layers including a silver halide emulsion layer, and the silver halide emulsion layer contains silver halide grains having a silver chloride content of not less than 90 mol %, and at least one of the photographic component layers contain a nitrogen-containing heterocyclic compound capable of forming a compound with silver ion having a solubility product of not more than 1.times.10.sup.-10 and a sulfur- containing compound selected from the group consisting of organic compounds having a polysulfer linkage comprised of three or more sulfer atoms, and organic compounds having a heterocyclic ring having at least two thioether linkages or at least one disulfer linkage.

Abstract: Light-sensitive silver halide photographic materials are disclosed comprising a support and silver halide emulsion layer or layers, wherein at least one of said silver halide emulsion layers contains tabular silver halide grains having an average diameter:thickness ratio of at least 3:1 and at least one resorcinol.The light-sensitive materials can be advantageously used in high temperature processing without causing serious fog problems.

Abstract: A silver halide color photographic material is described, comprising a support having thereon at least one of a silver halide emulsion layer and other hydrophilic colloid layer, wherein the silver halide emulsion layer or a hydrophilic colloid layer contains at least one compound represented by formula (II): ##STR1## wherein R.sub.2 represents a hydrogen atom or a group that can be substituted, Y.sub.1 represents ##STR2## R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8, which may be the same or different, each represents a hydrogen atom or a group that can be substituted; X.sub.1 represents a divalent linking group containing a hetero atom connected to the carbon atom; m is 0 or 1; A represents a bleach accelerating agent moiety represented by ##STR3## wherein R.sub.9, L, X.sub.2 R.sub.10 B, l.sub.1 and L.sub.2 are defined in the specification.The compound represented by formula (II) is a bleach accelerating agent having an active group of adsorptive group.

Abstract: A silver halide photographic material which comprises a support having thereon at least one hydrophilic colloid layer being a silver halide photographic emulsion layer, and at least one hydrophilic colloid layer containing a compound represented by the following general formula (I): ##STR1## wherein A.sub.1 and A.sub.2 both represent a hydrogen atom, or one of A.sub.1 and A.sub.2 is a hydrogen atom and the other is a sulfonyl group or an acyl group; R.sub.1 represents an aliphatic group or an aromatic group; G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfinyl group, a sulfoxy group, a group of ##STR2## wherein R.sub.2 is an alkoxy group or an aryloxy group, a group of ##STR3## or an iminomethylene group; X.sub.1 represents a residue of a nitrogen-containing heterocyclic ring; and at least one of R.sub.1 and X.sub.1 having an adsorption-accelerating group on silver halide.

Abstract: A silver halide photographic material that contains at least one compound represented by the general formula (2) shown below and at least one compound selected from the group consisting of the compounds represented by the general formulas (3) and (4) shown below: ##STR1## The constituents in the above formulas are clearly defined in the instant specification and claims.

Abstract: Disclosed is a direct positive photographic material having an improved time-dependent storage stability. The material comprises a support having thereon at least one photographic emulsion layer containing previously non-fogged internal latent image type silver halide grains wherein the photographic emulsion layer contains at least one compound of formula (I): ##STR1## where R.sup.11 is an aryl group, R.sup.12 to R.sup.15 each are a hydrogen atom, or an aliphatic or aromatic group, and R.sup.11 to F.sup.15 may have substituent(s) and may form ring(s).