Abstract: Disclosed is a method for the development of a silver halide light-sensitive black and white material, wherein a silver halide light-sensitive material is developed in the presence of at least one compound represented by the following general formula (I): ##STR1## wherein M represents a hydrogen atom, an alkali metal atom, an ammonium group or a group which is cleaved under alkaline conditions; L represents a bivalent organic group comprising an alkylene group, an alkenylene group, an ether group, a thioether group, --CO--, --CS-- or --NR-- (wherein R represents a hydrogen atom or an alkyl group) alone or a combination of two or more of them; X represents an amino group, an ammonio group, a hydroxyl group or a heterocyclic group; and n represents 0 or 1.

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 emulsion layer wherein the silver halide emulsion contains a salt of a metal ion of which the atomic number is at least 21 alone or together with a chelating agent and wherein the silver halide emulsion has been chemically sensitized in the presence of a chemical sensitization promoter comprising at least one of a silver halide solvent and an adsorbable compound.

Abstract: This invention provides a method of preparing a silver halide photographic emulsion which comprises adding to the silver halide emulsion before or during sensitization a non-labile chalcogen compound represented by Formula I:R.sup.1 --X.sup.1 --X.sup.2 --R.sup.2 (Formula I)It further provides a silver halide photographic emulsion prepared by the above method.

Abstract: A silver halide color photographic light-sensitive material is disclosed. The light-sensitive material comprises a support having thereon a silver halide emulsion layer containing silver halide grains each containing an iridium compound and a compound containing iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium or platinum; elemental sulfur; and two kinds of specified monomethine cyanine sensitizing dyes. The light sensitive material is improved in the reciprocity law failure property and the sensitivity fluctuation due to variation of atmosphere humidity.

Abstract: This invention provides a method of preparing a silver halide photographic emulsion which comprises adding to the silver halide emulsion a solid particle dispersion of a non-labile chalcogen compound represented by Formula I:R.sup.1 --X.sup.1 --X.sup.2 --R.sup.2 (Formula I)It further provides a silver halide photographic emulsion prepared by the above method.

Abstract: A multilayer silver halide color photographic element comprising at least one blue-sensitive silver halide emulsion layer comprising a blue spectral sensitizing dye and a supersensitizing amount of a disulfide compound of formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4, equal or different, each represents a hydrogen atom or a lower alkyl group, R.sub.5 represents a hydrogen atom, a formyl group or an acetyl group, R.sub.6 and R.sub.7, equal or different, each represents a hydrogen atom or a lower alkyl group, or R.sub.6 and R.sub.7 represent the elements needed to complete an unsaturated cyclic nucleus.The combination provides a blue-sensitive silver halide emulsion layer having high sensitivity, low fog and good resistance against fading of the latent image.

Abstract: Disclosed is a method of processing a light-sensitive silver halide color photographic material subjected to imagewise exposure, substantially through a color developing step, a bleach-fixing step and a stabilizing step in this order, wherein at least one layer of the light-sensitive silver halide color photographic material comprises a silver halide containing not less than 80 mol % of silver chloride, the washing-substitutive stabilizing step is carried out in a processing time of not more than 45 seconds, and a washing-substitutive stabilizing solution used in the washing-substitutive stabilizing step has a salt concentration of at least 1,000 ppm. Disclosed are also a washing-substitutive stabilizing solution and a kit of a stabilizer used for the method of this invention.

Abstract: Disclosed is a silver halide photographic material comprising a support, having thereon at least one silver halide emulsion layer, wherein there is contained in the silver halide emulsion layer or other hydrophilic colloid layer a compound of which an oxidized form is produced in accordance with development of the silver halide and is capable of releasing a photographically useful group by means of a conjugated addition-elimination mechanism due to an intramolecular nucleophilic group attack.

Abstract: The improved color photographic material has on a support at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one red-sensitive silver halide emulsion layer, each of those emulsion layers having a specified spectral response. This color photographic material has high chroma and insures faithful reproduction of color hues even under illumination with a fluorescent lamp.

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: The addition of 3-substituted-5-alkylthio-1,2,4-triazoles to silver halide photothermographic emulsions improves the post-processing stability of the emulsion.

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: Silver halide photographic elements which are capable of high contrast development and are especially useful in the field of graphic arts have incorporated therein a hydrazine compound which functions as a nucleator, an amino compound which functions as an incorporated booster, and a ballasted thioether isothiourea which functions to inhibit pepper fog and restrain image spread.

Abstract: A method for spectrally sensitizing silver halide emulsions is disclosed, comprising the step of adding a cyanine dye, which provides a J-band when added to silver halide emulsions, to a silver halide emulsion followed by ripening with such conditions that the relative quantum yield .phi..sub.r of spectral sensitization assumes a value of 1/2 or less of the .phi..sub.r of spectral sensitization obtained when the dye is added to the emulsion under ripening conditions of 40.degree. C. and 20 minutes from the time of addition of the dye to the emulsion until the time of coating the emulsion, and then ripening the silver halide emulsions. In one embodiment of the disclosed method, a heterocyclic compound which contains a mercapto group is added to the emulsion before the addition of the dye in an amount sufficient to increase the .phi..sub.r.

Abstract: A silver halide color photographic material is disclosed, which comprises a support having thereon a photographic layer containing at least one compound represented by formula (I): ##STR1## wherein each of R.sub.01, R.sub.02 and R.sub.03, which may be the same or different, represents a hydrogen atom, an aliphatic group, an aromatic group or a heterocyclic group; R.sub.01 and R.sub.02, R.sub.02 and R.sub.03, and R.sub.01 and R.sub.03 may be combined with each other, provided that all of R.sub.01, R.sub.02 and R.sub.03 are not hydrogen atoms at the same time; each of X.sub.01, X.sub.02 and X.sub.03, which may be the same or different, represents a mere bond, --O--, --S-- or ##STR2## and R.sub.04 has the same meaning as R.sub.01.

Abstract: A silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein the silver halide photographic material contains at least one photographic agent represented by the following formula (I): ##STR1## wherein X represents a hydrogen atom or a group capable of forming a hydrogen atom upon hydrolysis; Time represents a divalent linking group; PUG represents a photographically useful group; V represents ##STR2## wherein R.sub.0 represents n alkoxy group or an aryloxy group, ##STR3## an iminomethylene group or ##STR4## R.sub.1 represents a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an alkoxy group, an aryloxy group, an amino group or --CHR.sub.2 --(Time).sub.m PUG; R.sub.2 represents a hydrogen atom, an aliphatic group, an aromatic group or a heterocyclic group; m represents 0 or 1; and n represents 0 or 1.

Abstract: Disclosed is a direct positive photographic material comprising 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 formulae (I), (II) and (III) preferably along with at least one compound of formulae (IV), (V) and (VI), and that the internal latent image-type silver halide grains are silver bromide, silver chloride, silver iodobromide, silver chlorobromide or silver chloroiodobromide grains and contain at least one metal of manganese, copper, zinc, cadmium, rhenium, lead, bismuth, indium, thallium, zirconium, lanthanum, chromium, mercury and metals of Group VIII of the Periodic Table.M.sub.2 SO.sub.3 (I)MHSO.sub.3 (II)M.sub.2 S.sub.2 O.sub.5 (III)wherein M represents a hydrogen atom or a cation.R--SO.sub.2 S--M.sup.1 (IV)R--SO.sub.2 S--R.sup.1 (V)R--SO.sub.2 S--L.sub.m --S.O.sub.2 S--R.sup.2 (VI)wherein R, R.sup.1 and R.sup.

Abstract: A photosensitive silver halide photographic material having a support and provided thereon, photographic component layers including at least one silver halide emulsion layer is disclosed. At least one silver halide emulsion layer comprises silver halide grains having silver chloride content of not less than 90 mol %; at least one of the photographic component layers comprises a specific dye excellent in decolorization and capable of improving sharpness; at least one silver halide emulsion layer comprises a mercapto compound for improving aging stability of silver halide emulsions; a photographic component layer is hardened with cyanuric chloride series hardeners for improving fog.

Abstract: There is disclosed a silver halide photographic material comprising a photosensitive emulsion layer containing a nitrogen-containing heterocyclic compound and a silver halide emulsion of high-silver-chloride, which emulsion has been spectrally sensitized with a red-sensitive sensitizing dye having a definite reduction potential value, and which has been subjected to reduction sensitization. The disclosure as described provides a silver halide photographic material that is excellent in rapid processing and high in sensitivity and wherein there is little change of photographic performance.

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

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

Abstract: A new class of photographic stabilizers is prepared and their use in photographic materials is disclosed. These compounds are 1-phenyl-3-pyrazolidinone derivatives corresponding to following general formula: ##STR1## wherein: A represents a group capable of adsorbing at the surface of silver halides;L is a divalent linking group and r is 0 or 1;R1 and R2 each represent hydrogen, lower alkyl or substituted lower alkyl.The photographic materials containing the substances of the invention are preferably DTR mono-sheet elements which after processing can serve as planographic printing plates.

Abstract: A novel silver halide photographic material is described, comprising a compound represented by formula (I): ##STR1## wherein Q represents a nonmetallic atomic group required to be connected to carbon atom and nitrogen atom to form a monocyclic or condensed heterocyclic ring therewith; L represents a divalent group; n represents an integer of 0 to 2; M.sup.1 represents a hydrogen atom, ammonium ion or metallic ion; and R.sup.1 and R.sup.2 each represents a hydrogen atom, alkyl group, ammonium ion or metallic ion and may be the same or different or may be connected to each other to form a 5- or 6-membered ring. In a preferred embodiment, at least one of R.sup.2 and R.sup.1 represents a hydrogen atom, ammonium ion or metallic ion.

Abstract: The addition of certain 5-mercapto-1,2,4-triazoles to silver halide photothermographic emulsions improves the post-processing image stability of those emulsions.

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: Silver halide photographic elements which are capable of high contrast development, when processed in the presence of a hydrazine compound that functions as a nucleating agent, contain both an amino compound which functions as an incorporated booster and a ballasted hydrophobic isothiourea compound comprising a ballasting group, that is attached to the sulfur atom, which serves to restrict the mobility of the compound and thereby aid in retaining it in the photographic element during development. The ballasted hydrophobic isothiourea compound is highly effective in reducing pepper fog and also serves to restrain image spread.

Abstract: A silver halide photographic material composed of a support having thereon at least one silver halide photosensitive emulsion layer, at least one layer of the material containing a blocked photographic reagent precursor represented by formula (I): ##STR1## wherein X.sub.1 represents a divalent linking group containing a hetero atom bonded to the carbon atom, provided that X.sub.1 is linked to the carbon atom by a group other than ##STR2## PUG represents a photographically useful group containing a hetero atom bonded to X.sub.1 ; W represents .dbd.N-- or ##STR3## Y.sub.1 represents hydrogen or a group capable of being substituted; Z represents an atomic group necessary for forming a heterocyclic ring, provided that when W represents a ##STR4## the group adjacent to W in the heterocyclic ring is a group other than ##STR5## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.

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: A process for preparing a direct positive photosensitive material comprising providing on a support at least one silver halide light-sensitive emulsion layer containing the combination of (a) non-prefogged internal latent image silver halide grains; (b) a binder; (c) at least one compound represented by formulae (I), (II), or (III); and at least one compound represented by formula (IV):R--SO.sub.2 S--M (I)R--SO.sub.2 S--R.sup.1 (II)R--SO.sub.2 S--L.sub.m --S.O.sub.2 S--R.sup.2 (III)wherein R, R.sup.1 and R.sup.2 each represents a substituted or unsubstituted aliphatic group, a substituted or unsubstituted aromatic group or a substituted or unsubstituted heterocyclic group; M represents a cation; L represents a divalent linking group; and m is 0 or 1; andR.sup.3 --SO.sub.2 --M.sup.1 (IV)wherein R.sup.3 represents an aliphatic group, an aromatic group or a heterocyclic group; and M.sup.1 represents a cation. The material provides a direct positive image with high Dmax, low Dmin and high contrast.

Abstract: A novel direct positive photosensitive material is provided comprising a support having therein at least one photographic emulsion layer containing internal latent image type silver halide grains not having been previously fogged, wherein the photographic emulsion layer comprises:(1) at least one of compounds represented by the general formulae [I], [II] and [III]; and(2) at least one of compounds represented by the general formulae [IV], [V] and [VI]:R--SO.sub.2 S--M [I]R--SO.sub.2 S--R.sup.1 [II]R--SO.sub.2 S--Lm--S.O.sub.2 S--R.sup.2 [III]wherein R, R.sup.1 and R.sup.2 may be the same or different and each represents an aliphatic group, aromatic group or heterocyclic group; M represents a cation; L represents a divalent connecting group; and m represents an integer 0 or 1;M'.sub.2 SO.sub.3 [IV]M'HSO.sub.3 [V]M'.sub.2 S.sub.2 O.sub.5 [VI]wherein M' represents a hydrogen atom or cation.

Abstract: A photosensitive silver halide material comprising a support and at least one photosensitive silver halide emulsion layer, of which the emulsion contains an effective quantity of at least one compound from each of at least two classes A, B, C and D defined hereinafter:A) compounds corresponding to general formula I ##STR1## B) compounds corresponding to general formula II ##STR2## or tautomers thereof, C) compounds corresponding to general formula (III) ##STR3## D) compounds corresponding to general formula IV ##STR4## in which R.sub.1 -R.sub.3, R.sub.11 -R.sub.19, Y, Z, m and n are as defined in the specification,are distinguished by effective latent image stabilization for a minimum increase in fogging and loss of sensitivity.

Abstract: There is disclosed a heat-developable color light-sensitive material having an excellent preservability and capable of providing images having a superior discrimination and only a slight fluctuation of Dmin against that of the development conditions. The material comprises a support having thereon a light-sensitive silver halide, a dye donor and a compound represented by following Formula I: ##STR1## wherein X represents a group capable of splitting off in heat-development; Y represents the group of atoms necessary to form 5- or 6-membered heterocyclic ring; Z represents a substituent; and n represents an integer of 0 to 4.

Abstract: A heat developable photosensitive material comprising a support having thereon at least one photosensitive silver halide emulsion layer, which contains at least one compound selected from those represented by the following general formulae (I) and (II) to acquire a high S/N ratio and high sensitivity: ##STR1## wherein R represents an alkylene group, an alkenylene group, an aralkylene group or an arylene group, which each may be substituted; Y represents ##STR2## R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.

Abstract: A direct positive photosensitive material composed of a support having thereon at least one photosensitive emulsion layer comprising non-prefogged internal latent image silver halide grains and at least one compound represented by formulae (I), (II), (III) or (IV): ##STR1## wherein M.sub.1 represents hydrogen, a cation or a protective group capable of being cleaved by an alkali; and Z represents an atomic group necessary for forming a 5-membered or 6-membered substituted or unsubstituted ring selected from a heterocyclic ring and a condensed heterocyclic ring; ##STR2## wherein Z.sub.1 represents an alkyl group containing from 1 to 18 carbon atoms, an aryl group containing from 6 to 18 carbon atoms or a heterocyclic group; Y.sub.1 and Y.sub.2, which may be the same or different, each represents an atomic group necessary for forming an aromatic ring containing from 6 to 18 carbon atoms or a heterocyclic ring; M represents a metal atom or an organic cation; and n is an integer of 2 to 10.

Abstract: A silver halide photographic light-sensitive material includes a support and at least one layer of silver halide emulsion formed on the support. The emulsion layer contains silver halide grains which have been subjected both to reduction sensitization while growing and to at least one chemical sensitization selected from the group consisting of gold sensitization, sulfur sensitization, and noble-metal sensitization. Each of the silver halide grains has at least 5 mol % of silver iodide on a surface thereof.

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 emulsion manufactured by performing reduction sensitization and addition of at least one compound selected from the group consisting of compounds represented by formulas [I], [II], and [III] during the silver halide grain formation in a process of manufacturing silver halide emulsions:R--SO.sub.2 S--M [I]R--SO.sub.2 S-R.sup.1 [II]RSO.sub.2 S--L.sub.m --SSO.sub.2 --R.sup.2 [III]wherein R, R.sup.1, and R.sup.2 can be the same or different and represent an aliphatic group, an aromatic group, or a heterocyclic group, M represents a cation, L represents a divalent bonding group, m represents 0 or 1, compounds represented by formulas [I] to [III] can be polymers containing, as a repeating unit, divalent groups derived from compounds represented by formulas [I] to [III], and, if possible, R, R.sup.1, R.sup.2 and L can be bonded with each other to form a ring.

Abstract: A silver halide photographic material having at least one light-sensitive emulsion layer containing surface latent image type silver halide grains on a support, wherein the emulsion layer contains a silver halide emulsion, in an amount of 50% by weight or more, which is a substantially silver iodide-free silver chlorobromide comprising silver chloride in an amount of 70 mol % or more (as a mean value) of the total silver halide constituting the silver halide grains, which has a silver bromide-localized phase with a silver bromide content of less than 70 mol % in the inside or on the surface of the grains, and which further contains ions on in the grains.

Abstract: A silver halide photographic light-sensitive material having at least one light-sensitive emulsion layer containing surface latent image-type silver halide grains, coated on a reflective support, in which said at least one emulsion layer contains regular crystal grains of silver chloride or silver chlorobromide having a mean silver chloride content of 80 mol % or more on the basis of the total silver halide grains contained therein and substantially does not contain silver iodide, and in which a colloidal silver-containing layer is located adjacent to said emulsion layer, wherein at least one of said colloidal silver-containing layer, said emulsion layer and an interlayer therebetween contains at least one mercaptoazole compound. The material is, after having imagewise exposed, processed with a color developer within 90 seconds. The material forms an image with excellent sharpness and whiteness.

Abstract: A negative type silver halide photographic material is disclosed. The material comprises a support having provided thereon at least one silver halide emulsion layer containing silver halide grains sensitized with gold and sulfur sensitizers, the emulsion layer or at least one other hydrophilic colloid layer containing at least one high contrast-imparting hydrazine derivative and at least one compound represented by the following general formula (I): ##STR1## wherein Z represents N or C--X wherein X represents a substituted or unsubstituted alkyl or aryl group, Y represents a substituted or unsubstituted alkyl or aryl group, and M represents a hydrogen atom, a metallic atom, or ammonium which may be substituted.

Abstract: There is disclosed a direct positive silver halide light-sensitive material which can be processed in ultra-rapid processing and have a higher sensitivity, a lower Dmin, an excellent antistatic property and less flactuation of the properties in storing. The light-sensitive material contains an electron-accepting compound in a silver halide emulsion layer, and a fluorinated surfactant and/or at least one of the compounds represented by Formulas I-a to II-b in a photographic component layer: ##STR1## wherein R.sub.1 to R.sub.4 represent independently a hydrogen atom, a lower alkyl group, an alkoxy group, a carboxy group, an alkoxycarbonyl group, a sulfo group, a halogen atom, and a nitro group, provided that at least one of R.sub.1 and R.sub.2 is a carboxy group, an alkoxycarbonyl group or a sulfo group.

Abstract: A photographic recording material is provided which has enhanced photographic properties, such as sharpness values without substantial decrease in photographic speed.

Abstract: A method for forming a direct positive image having a high Dmax and a low Dmin, which comprises image-wise exposing a photographic light-sensitive material having on a support at least one photographic emulsion layer containing unprefogged internal latent image-type silver halide grains and developing the photographic light-sensitive material after or while fogging to form direct positive image, wherein the aforesaid development is performed in the existence of at least one compound selected from the group consisting of compounds represented by formula (I), (II), (III), (IV), (V) or (VI), acid salts of compounds represented by formula (I) to (IV) provided substituents thereof contain an amino group, and acid salts of compound represented by formula (V) or (VI); ##STR1## wherein symbols are defined as in claim 1.

Abstract: A silver halide photosensitive material comprising a support having thereon at least one silver halide emulsion layer containing silver halide grains. These silver halide grains are obtained by subjecting the surface of silver halide grains to halogen conversion. These silver halide grains are essentially silver iodide free silver chlorobromide. They have a plurality of internal layers of different halogen compositions and contain at least one bridged pentamethine cyanine dye compound represented by the general formula (I) or (I'): ##STR1## and one compound represented by general formula (II): ##STR2## The variables in the above formulas are defined in the instant specification.

Abstract: An improved, tabular grain radiographic element is described. This element contains a covering power enhancing amount of a thione and exhibits improved covering power and contrast over elements made without the thione.

Abstract: There is disclosed a thermal developing light-sensitive material comprising a support and, provided thereon, photographic structural layers comprising at least one layer containing light-sensitive silver halide, said photographic structural layer comprising a compound represented by general formula (1);Formula (1)X.sub.1 --L.sub.1 --Awherein X.sub.1 represents a residual group of a photographic restrainer, L.sub.1 is a mere bonding hand or a divalent group and A is selected from the group consisting of a hydrogen atom, an amino group, a hydroxyl group, a carboxyl group or a salt thereof, a sulfo group or a salt thereof and a sulfin group or a salt thereof;and a compound represented by general formula (2);Formula (2)X.sub.2 --L.sub.2 --Bwherein X.sub.2 represents a residual group of a photographic restrainer, L.sub.2 is a divalent group and B is a ballast group.

Abstract: Disclosed is a light-sensitive silver halide photographic material having a hydrophilic colloid layer containing at least one layer of a light-sensitive silver halide emulsion layer provided on a support, wherein a hydrazide derivative is contained in the light-sensitive silver halide emulsion layer, and the above hydrophilic colloid layer contains at least one of the compounds represented by Formulae [II] and [III] shown below: ##STR1## wherein R1, R2 and R3 are as defined in the specification, ##STR2## wherein R1 and R2 are as defined in the specification.

Abstract: There is disclosed a light-sensitive silver halide photographic material which comprises, in a light-sensitive silver halide photographic material provided by coating at least one layer of hydrophilic colloidal layer including light-sensitive silver halide photographic emulsion layer on a support, containing a specific hydrazide derivative in the light-sensitive silver halide emulsion layer and containing, in the hydrophilic colloidal layer, at least one compound selected from each of the groups A and B consisting of the compounds represented by the formulae (II) to (VII) as specified in the specification.

Abstract: A silver halide photographic light-sensitive material is disclosed. The silver halide emulsion layer of the light-sensitive material is sensitized in infrared region of the spectrum by a cationic di- or tri-carbocyanine sensitizing dye and a compound represented by formula I, II, or III; ##STR1## The light-sensitive material is improved in stability of the coating solution of the silver halide emulsion for standing during in its production process and also improved in stability for prolonged storage after production.