Abstract: A silver halide photographic material having at least one light-sensitive silver halide emulsion layer coated on a support, wherein the silver halide emulsion layer contains silver chlorobromide grains comprising silver chlorobromide containing 90 mol % or more of silver chloride, having at least one region in which the silver bromide content is high at the vicinity of the corner of the grains, and with not more than 15 mol % of average silver bromide content at the surface of the grains. A method producing the silver halide photographic materials is also disclosed.

Abstract: A color photographic material has on a support at least one blue-sensitive layer, at least one green-sensitive layer and at least one red-sensitive layer, and further has an emulsion layer capable of imparting an interlayer effect to the red-sensitive layer. The interlayer effect-donating layer is color-sensitized with both a sensitizing dye of formulae (I) and a sensitizing dye of formula (II): ##STR1## where R.sub.11, R.sub.12, R.sub.21 and R.sub.22 each represents an alkyl group; Z.sub.11 and Z.sub.21 each represents a group of atoms necessary for forming a benzene ring; Z.sub.12 represents a group of atoms necessary for forming a benzothiazzole nucleus or a benzoselenazole nucleus; Z.sub.22 represents a group of atoms necessary for forming a benzoxazole nucleus or a naphthoxazole nucleus; X.sub.11 and X.sub.21 each represents a charge-balancing pair ion; and m and n each represents 0 or 1. The material has an excellent color reproducibility and gives a color image with high chroma and graininess.

Abstract: Disclosed is a photographic silver halide emulsion comprising a tabular silver halide grains having at least two twin crystal planes, at least one of an unsymmetrical cyanine represented by Formula I, at least one of a symmetrical cyanine represented by Formula II-(a), and at least one of a symmetrical cyanine represented by Formula II-(b); ##STR1## wherein Z.sub.1 and Z.sub.2 each represents a group of atoms necessary to form a naphthoxazole ring, a naphthoimidazole ring, a naphthoselenazole ring, a benzoxazole ring, a benzothiazole ring, a benzimidazole ring, a benzselenazole ring, Z.sub.1 and Z.sub.2 are not the same as each other, a heterocyclic ring formed by Z.sub.1, Z.sub.2 may have a substituent; R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 each represents an unsubstituted alkyl group or a substituted alkyl group; m represents an integer of 0 to 2, L.sub.1 to L.sub.9 each represents a methine group or a substituted group; X.sub.1, X.sub.2 and X.sub.

Abstract: A process for controlling the silver halide grain-to-grain distribution of a variable contrast dye in a light sensitive silver halide emulsion layer of a variable contrast photographic element, and thereby adjusting the low contrast characteristic curve of the element, is disclosed comprising the process steps of adding a green variable contrast sensitizing dye of the following formula (I) to a silver halide emulsion for a variable contrast photographic element, adding a blue sensitizing dye of the following formula (II) to the same silver halide emulsion, and coating the emulsion on a support. In the process, the green and blue sensitizing dyes are added to the emulsion at substantially the same time, and the green dye is added in an amount less than that required to impart maximum sensitivity to all of the silver halide in the emulsion. ##STR1## In formula (I), R.sup.1, R.sup.2, R.sup.6 and R.sup.

Abstract: A silver halide photographic emulsion comprising a substantially water-insoluble, spectral sensitizing dye and a styryl compound represented by the following formula, wherein the sensitizing dye is dispersed in an aqueous solution substantially free from an organic solvent and the thus-dispersed dye is introduced into the silver halide emulsion.

Abstract: A silver halide photographic material comprising a support and at least one light-sensitive silver halide emulsion layer coated on at least one side of the support, wherein the silver halide grains contained in the silver halide emulsion layer have been subjected to reduction-sensitization, and the silver halide emulsion contains at least one spectral sensitizer represented by Formula (I), as defined in claim 1. At least one of the dyes represented by Formula (II), as defined in claim 1, is added to the silver halide emulsion after chemical sensitization or reduction sensitization, but before coating. The addition amount of the dye represented by Formula (I) is 5.times.10.sup.-4 to 3.times.10.sup.-3 mol per mol of silver halide and the addition amount of the dye represented by Formula (II) is 1.times.10.sup.-5 to 1.times.10.sup.-3 mol per mol of silver halide, provided that the addition amount of the dye of Formula (I) is more than that of the dye of Formula (II).

Abstract: A silver halide color photographic light-sensitive material is disclosed, which is excellent in color reproducibility and storability and has lowered color stain.

Abstract: Disclosed is a novel silver halide photographic material is provided comprising a support having thereon (a) a layer containing at least one methine compound represented by the following general formula (I) and (b) a layer containing at least one methine compound represented by the following general formula (II), (III), (IV) or (V): ##STR1## wherein the variables in the formulas are defined in the detailed description. In a preferred embodiment, the silver halide photographic material comprises at least one methine compound represented by general formula (I) and at least one methine compound represented by general formula (II) or (V) in the same layer.

Abstract: A silver halide photographic light-sensitive material comprising a support having thereon at least one light emulsion layer containing (A) at least one of the methine compounds represented by the following formula (I) and (B) at least one of the methine compounds represented by the following formula (II) or (III): ##STR1## wherein Z.sup.1, Z.sup.2, R.sup.1, R.sup.2, L.sub.1 -L.sub.8, p, q, k.sub.1 -k.sub.3, n.sub.1 -n.sub.3 and X.sub.1 -X .sub.3 are as defined in the specification.

Abstract: A silver halide photographic material is descloosed, comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide emulsion layer contains at least 1.times.10.sup.-4 mol of a compound represented by formula (I) per mol of silver halide and from 1.times.10.sup.-3 to 1.times.10.sup.-1 mol of compound represented by formula (II) per mol of the compound of formula (I) and the iodine content of the silver halide emulsion is 1 mol % or less: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, Z.sub.1, Z.sub.2, Z.sub.3, Z.sub.4, X.sup..crclbar. and n are defined in the specification. The photographic material is highly sensitive, can be processed rapidly, and does not fatigue the developer, yet it contains only a small percentage of iodine, if any. The photographic material is useful in photographic films including X-ray films.

Abstract: A silver halide black and white photographic light-sensitive material which is improved in pressure resistance and storage stability is disclosed comprising a support having thereon a silver halide emulsion layer comprising silver halide grains, wherein said silver halide grains contain rhodium in an amount of 10.sup.-8 to 10.sup.

Abstract: In a method of manufacturing a silver halide emulsion which comprises a silver chlorobromide having a silver chloride content of 90 mol% or more or silver chloride and said silver halide containing substantially no silver iodide, the improvement which comprises the steps of,(i) adding to a reactor a compound capable of spectrally sensitizing the silver halide emulsion in a wavelength range between 590 nm and 720 nm, and(ii) then adding to the reactor a compound capable of spectrally sensitizing the silver halide emulsion in a wavelength range between 390 nm and 590 nm,prior to the completion of chemical sensitization of the silver halide emulsion, and color photographic material having the emulsion manufactured by the 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: A silver halide color photographic light-sensitive material is provided which comprises a support having thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer, having a spectral sensitivity distribution such that a wavelength weight-averaged in spectral sensitivity distribution of the red-sensitive silver halide emulsion layer is within a range of 595 to 625 nm; a maximum sensitivity wavelength in spectral sensitivity distribution of the blue-sensitive silver halide emulsion layer is within a range of 415 to 470 nm; and a sensitivity of the blue-sensitive silver halide emulsion layer at 480 nm does not exceed 35% of the sensitivity at the maximum sensitivity wavelength. The color photographic material makes it possible to faithfully reproduce the hues such as purple colors and green colors.

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 silver halide color photographic light-sensitive material which offers high chroma and excellent hue reproduction comprises a support having thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer, wherein the maximum sensitivity wavelength .lambda..sub.B of a spectral sensitivity distribution of said blue-sensitive silver halide emulsion layer is in the range of 410 nm.ltoreq..lambda..sub.B .ltoreq.470 nm; and the sensitivity of said blue-sensitive silver halide emulsion layer at 480 nm is not more than half of the sensitivity at said wavelength .lambda..sub.B. Preferably, the maximum sensitivity wavelength .lambda..sub.G of said green-sensitive layer is in the range of 530 nm.ltoreq..lambda..sub.G .ltoreq.560 nm and the sensitivity of said green-sensitive layer at the wavelength of 500 nm is not less than one-fourth of the sensitivity at SG.sub.max ; the maximum sensitivity wavelength .lambda..sub.

Abstract: Silver halide photographic materials containing methine compounds of general formulas Ia, Ib, Ic, IIa, and IIb are disclosed. The variables are as defined in the present specification.

Abstract: There is disclosed a monochromatic silver halide light-sensitive photographic material for printing from a color negative, which has an excellent sensitivity, sharpness, graininess and background whiteness. The photographic material is characterized by that the surface of the support on which the emulsion layer is provided has the following reflection properties:L=90 or morea*=-0.5 to 1.0b*=-5.0 to -1.

Abstract: A negative silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, wherein said silver halide emulsion layer or another hydrophilic colloid layer provided on the support contains (i) a hydrazine derivative, (ii) at least one cationic dye selected from the group consisting of cyanine dyes, hemicyanine dyes and rhodacyanine dyes, and (iii) a compound represented by formula (I) and having substantially no absorption maximum at the visible region; ##STR1## wherein Z.sup.11, Z.sup.12, R.sup.11, R.sup.12, X and n are defined in the specification.

Abstract: 'A positive-positive silver halide color photographic material comprising at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, at least one blue-sensitive silver halide emulsion layer, at least one hydrophilic colloid layer, and at least one colloidal silver layer on a support wherein said silver halide emulsion layer, hydrophilic colloid layer, or colloidal silver layer contains at least one dye of formula (I): ##STR1## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different and each represents an alkyl group, an aryl gorup or a heterocyclic group; L.sub.1, L.sub.2 and L.sub.3 each represents a methine group; n.sub.1 represents 1 or 2; and any of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 has a sulfo group and the total of the groups is at least two or more. A method of forming a color image using the same is also disclosed.

Abstract: A silver halide photographic light-sensitive material comprising a support having thereon a yellow coupler-containing silver halide emulsion layer, a magenta coupler-containing silver halide emulsion layer and a cyan coupler-containing silver halide emulsion layer, wherein at least one of said silver halide emulsion layers contains silver halide grains having a silver chloride content of not less than 80 mol %, at least one of the sensitizing dyes represented by the following Formula [I] and at least one of the sensitizing dyes represented by the following Formula [II]; and said cyan coupler-containing silver halide emulsion layer contains at least one of the cyan couplers represented by the following Formula [III]: ##STR1##

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 panchromatic silver halide photographic emulsion for use in DTR process which exhibits a high sensitivity, especially to blue light, a high contrast and a high resolving power and a photographic element containing said silver halide emulsion layer. Said emulsion contains a blue-sensitizing dye represented by the general formula [I]: ##STR1## (wherein Z.sub.1, Z.sub.2, R.sub.1, R.sub.2, X.sub.1 and m are as defined before).Said emulsion may contain, as green- and red-sensitizing dyes, those represented by the general formula [II] and [III] to attain more effectively the objects: ##STR2## (wherein Z.sub.3, Z.sub.4, Z.sub.5, Z.sub.6, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, X.sub.2, X.sub.3 and m are as defined before).Said photographic element is an excellent ligtographic printing plate.

Abstract: A silver halide photographic material in which at least one silver halide emulsion layer coated onto a base support has been subjected to supersensitization by the combination of at least one symmetrical carbocyanine dye having two symmetrical heterocyclic structures, at least one other symmetrical carbocyanine dye having two symmetrical heterocyclic structures, and at least one asymmetrical carbocyanine dye having either one of the two heterocyclic structures in the first symmetrical carbocyanine dye and either one of the two heterocyclic structures in the second symmetrical carbocyanine dye. This photographic material has high spectral sensitivity and good storage stability since it is resistant to desensitization due to desorption of spectral sensitizers from silver halides.

Abstract: A photographic element is disclosed comprising a support having thereon a silver halide emulsion layer spectrally sensitized with(a) a first sensitizing dye according to the formula: ##STR1## Z.sub.1 and Z.sub.2 each independently represents the atoms necessary to complete a substituted or unsubstituted 5- or 6-membered heterocyclic nucleus,R.sub.1 and R.sub.2 each independently represents substituted or unsubstituted alkyl or substituted or unsubstituted aryl.R.sub.3, R.sub.4, R.sub.5, and R.sub.6 each independently represents hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, andX represents a counterion, and(b) a second sensitizing dye having a maximum sensitivity at a wavelength of about 5 to 100 nm less than the wavelength of maximum sensitivity of the first sensitizing dye.

Abstract: Compounds of the formula ##STR1## where A represents the atoms necessary to complete a benzoxazole or naphthoxazole ring which is optionally substituted, R.sub.1 and R.sub.2 are each alkyl, hydroxyalkyl or alkoxy alkyl groups wherein the alkyl moiety comprises 1 to 4 carbon atoms, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are each hydrogen atoms or alkyl groups having 1 to 4 carbon atoms or phenyl groups, and X is an anion.

Abstract: A silver halide photographic material is disclosed, which comprises at least one silver halide emulsion layer on a support, at least one of the emulson layer and other layers contains at least one hydrazine derivative and at least one of these layers contains at least one compound having both a silver halide adsorbing group and an acid group represented by the general formula (I):C-L-D (I)wherein C represents a group that enhances adsorption to silver halide, D represents an acid group, and L represents a divalent linking group,and possessing substantially no absorption maximum in the visible region. A method for forming superhigh contrast negative images is also disclosed, comprising imagewise exposing this silver halide photographic material, followed by developing with a developing solution containing sulfite ions in an amount of about 0.15 mol or more per liter and having a pH of about 10.5 to about 12.3.

Abstract: A silver halide photographic emulsion containing at least one of the compounds of formula (I) and at least one of the compounds of formula (III), or further containing at least one of the compounds of formula (II) besides the above at least two compounds: ##STR1## wherein R.sub.0, 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, R.sub.10 and R.sub.11 each represent various groups; X.sub.1.sup..crclbar., X.sub.2.sup..crclbar. and X.sub.3.sup..crclbar. each represent counter anions; l, m and n are each 0 or 1; Z.sub.1 and Z.sub.2 each represent nonmetal atomic groups necessary for forming unsubstituted or substituted benzene rings, or unsubstituted or substituted naphthalene rings; and Z.sub.3 and Z.sub.4 each represent nonmetal atomic groups necessary for forming unsubstituted or substituted naphthalene rings.

Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer containing at least 1.0.times.10.sup.-4 gram equivalent of an anionic surface active material as anion per gram of a hydrophilic dispersion medium in the emulsion layer, the material having dispersed in the emulsion layer a light-collecting dye that has an emission band overlapping at least partially with the optical absorption band of a spectral sensitizing dye on a silver halide grain present in the emulsion layer, the light-collecting dye having an emission quantum yield of at least 0.1 at a concentration of 10.sup.-4 mol/dm.sup.3 in dry gelatin at room temperature, with the proviso that the light-collecting dye and the spectral sensitizing dye may be the same compound.

Abstract: Dye polymers are disclosed that J-aggregate in solution and when adsorbed to silver halide. These polymers comprise polymer repeat units having covalently bonded thereto cyanine dye units comprising two benzimidazole nuclei, in an amount sufficient to J-aggregate.

Abstract: A direct positive type silver halide photographic material and developing method therefor are disclosed. The photographic material have blue-, green- and red-sensitive emulsion layers and each of these emulsion layer contains at least two kinds of silver halide emulsion being different from each other in average grain size. The average grain diameter S of the emulsion having the smallest average grain size and the average grain diameter of the emulsion having the largest average grain size in each emulsion layer have a proportional relation of 1.6.ltoreq.L/S. The emulsion having the smallest average grain size is contained in a ratio of from 2 to 50% in the blue-sensitive layer and 2 to 40% in green- and red-sensitive emulsion layer.

Abstract: A silver halide photographic material is disclosed containing at least one silver halide emulsion layer, in which (1) the silver halide grains constituting the emulsion layer have been spectrally sensitized by at least one adsorbable spectral sensitizing dye added thereto before the completion of chemical ripening of the grains, and (2) at least one luminous dye which has a quantum efficiency of 0.1 or more when the concentration thereof in dry gelatin at room temperature is 10.sup.-4 mol/dm.sup.3 and which can be substantially completely removed by development is added to a hydrophilic dispersion medium for the emulsion layer exclusive of the silver halide grains in a concentration of 2.0 mmol/dm.sup.3 in the dispersion medium. The addition of the spectral sensitizing dye is not limitative and can be either before the completion of the formation of the silver halide grains or during a stage from the completion of the formation of the grains to the completion of the chemical ripening thereof.

Abstract: A color image-forming process is disclosed, which comprises imagewise exposing a silver halide color photographic material comprising a support having thereon at least one light-sensitive layer containing at least one coupler capable of forming a dye upon a reaction with an oxidation product of an aromatic primary amine color developing agent and a silver halide emulsion spectrally sensitized with a dye represented by the following general formula (I), (II) or (II), substantially excluding silver iodide, and containing about 80 mol % or more silver chloride, processing the exposed photographic material with a color developer, then processing it with a solution having a pH of not more than about 6.5 and having a bleaching ability within about 75 seconds: ##STR1## wherein the symbols have the meanings described hereinafter. A silver halide color photographic material to be processed in accordance with the method described above is also disclosed.

Abstract: A silver halide photographic emulsion which contains at least one of the compounds represented by the following general formula (I), and at least one compound selected from the group consisting of the compounds represented by the general formula (II) and the compounds represented by the general formula (III): General formula (I) ##STR1## wherein R.sub.0 and R.sub.1 may be the same or different, and represent hydrogen atoms, alkyl, aryl, alkoxy, aryloxy groups, halogen atoms, alkoxycarbonyl, acylamino, acyl, cyano carbamoyl, sulfamoyl, carboxyl, or acyloxy groups under the condition that R.sub.0 and R.sub.1 do not represent hydrogen atoms at the same time; R.sub.2 represents a hydrogen atom, alkyl, or aryl, R.sub.3 represents alkyl, aryl, alkoxy, aryloxy, acyl, acyloxy, alkoxycarbonyl, or acylamino group and moreover R.sub.3 is required to be a substituent having such L and B that S value is 544 or less in the equation ofS=3.536L-2.661B+535.4wherein L (its unit is .ANG.

Abstract: A silver halide photosensitive material comprising a support having thereon at least one silver halide emulsion layer comprising tabular grains whose diameter of an average projected area/average thickness ratio is 5/1 or higher is provided. Said emulsion layer contains one or more luminescent dyes whose luminescence quantum yield is 0.3 or more when its concentration is dry gelatin is 10.sup.-4 mol/dm.sup.3 at room temperature and that can be substantially removed by development processing, and the content of said luminescent dye is 3.0 .mu.mol/m.sup.2 or more for the total surface area of the silver halide grains in said emulsion layer, or is 2.0 mmol/dm.sup.3 or more in a hydrophilic dispersion medium excluding the silver halide grain surfaces in said emulsion layer.

Abstract: A color image-forming process is disclosed, which comprises imagewise exposing a silver halide color photographic material comprising a support having thereon at least one light-sensitive layer containing at least one coupler capable of forming a dye upon a reaction with an oxidation product of an aromatic primary amine color developing agent and a silver halide emulsion spectrally sensitized with a dye represented by the following general formula (I), (II) or (III), substantially excluding silver iodide, and containing about 80 mol % or more silver chloride, processing the exposed photographic material with a color developer, then processing it with a solution having a pH of not more than about 6.5 and having a bleaching ability within about 75 seconds: ##STR1## wherein the symbols have the meanings described hereinafter. A silver halide color photographic material to be processed in accordance with the method described above is also disclosed.

Abstract: A method for forming color images and silver halide color photographic material for use therewith are provided by the present invention. The method comprises imagewise exposing a silver halide color photographic material processing with a color developer and then successively processing with a solution having a bleaching ability and having a pH of about 6.5 or less for a period of time of about 75 seconds or less, wherein the silver halide color photographic material contains at least one light-sensitive layer on a support, the light-sensitive layer containing at least one coupler capable of forming a dye by the coupling reaction with the oxidation product of an aromatic primary amine color developing agent and a silver halide emulsion which substantially excludes silver iodide but contains silver chloride in an amount of about 80 mol % or more and which has been spectrally-sensitized with a dye as represented by general formula (I), (II) or (III) described herein.

Abstract: A corner development type silver halide photographic emulsion is disclosed, wherein the silver halide crystals in the silver halide emulsion are cubic or tetradecahedral grains having at least substantial (100) planes and the emulsion is controlled so that at least 70% of developed silver halide crystals (grains), which are observed on applying a light exposure of 1/50 second to the emulsion under the light-exposure condition corresponding to (maximum density --minimum density).times.3/4 of the silver image in the characteristic curve of the emulsion obtained by the developer, developing under the development condition which are used for processing a photographic light-sensitive material formed by coating the emulsion on a support, and stopping the development with an aqueous solution of 5% glacial acetic acid just after the initiation of the development, are developed at the corners of the cubic or tetradecahedral crystals or at the vicinity of the corners.

Abstract: A silver halide photographic material having at least one silver halide emulsion layer having been spectrally sensitized with adsorbable spectral sensitizing dye is disclosed, wherein a hydrophilic dispersion medium contains a substantially non-adsorbable luminescent dye which is easily removable by development processing the satisfies the following conditions (1) to (3):(1) The luminescent dye has an equilibrium adsorption of not more than 5.times.10.sup.-7 mol per m.sup.2 of silver bromide grain surface in a 5% by weight gelatin aqueous solution containing silver bromide grains whose outer surface is composed substantially of a [111] face under conditions of 40.degree. C. in temperature, 6.5.+-.0.05 in pH, and 10.sup.-4 mol/l in dye concentration in the solution phase;(2) The luminescent dye has an emission quantium yield of not less than 0.1 at room temperature in dry gelatin at a concentration of 10.sup.-4 mol/dm.sup.

Abstract: Disclosed is a silver halide photographic emulsion supersensitized with at least two sensitizing dyes selected from those represented by the following general formula [I], [II] and [III]:General formula [I]: ##STR1## wherein R.sub.1 represents an unsubstituted or substituted alkyl group, R.sub.2 represents a sulfoalkyl group or a sulfoaralkyl group, and R.sub.3 represents an alkyl group, and W.sub.1 and W.sub.2 represent each an alkylene group;General formula [II]: ##STR2## wherein W.sub.3 to W.sub.6 represent each an alkyl group, an alkoxy group, or hydroxyl group, R.sub.4 represents an unsubstituted or substituted alkyl group, R.sub.5 represents a sulfoalkyl group or a sulfoaralkyl group, and R.sub.6 represents an alkyl group;General formula [III]: ##STR3## wherein R.sub.7 represents an unsubstituted or substituted alkyl group, R.sub.8 represents a sulfoalkyl group or a sulfoaralkyl group, R.sub.9 represents an alkyl group, and W.sub.7 and W.sub.

Abstract: There is disclosed a light-sensitive silver halide photographic material which has at least one silver halide emulsion layer on a support, the silver halide emulsion layer includes substantially monodispersed core/shell type silver halide grains, and the silver halide grains are those which have been sensitized with a combination of at least one of sensitizing dyes represented by the following formulae (I) and (II): ##STR1## wherein R.sub.1 to R.sub.8, Y.sub.1 to Y.sub.3, Z.sub.1 to Z.sub.8, X.sub.1.sup..crclbar., X.sub.2.sup..crclbar., m and n have the same meanings as defined in the specification.

Abstract: There is disclosed a light-sensitive silver halide photographic material which has at least one silver halide emulsion layer on a support, the silver halide emulsion layer includes substantially monodispersed core/shell type silver halide grains, and the silver halide grains are those which have been sensitized with a combination of at least one of sensitizing dyes represented by the following formulae (I) and (II): ##STR1## wherein R.sub.1 to R.sub.8, Y.sub.1 to Y.sub.8, X.sub.1.sup..crclbar., X.sub.2.sup..crclbar., m and n have the same meanings as defined in the specification.

Abstract: A silver halide photographic light-sensitive material is described, which comprises a support having thereon at least one layer comprising a silver halide emulsion containing tabular silver halide particles wherein at least 50% of the total projected area of silver halide particles contained in the silver halide emulsion in said at least one layer is occupied by the tabular silver halide particles having an average aspect ratio of 5:1 or more, and wherein said silver halide emulsion contains a compound represented by general formula (I) or (II): ##STR1## wherein a is an integer of 1 to 8;R.sub.1, R.sub.2 and R.sub.3, which are the same or different, each represents a group of the formula --CH.sub.2 (CF.sub.2).sub.b H or a substituted or unsubstituted alkyl group, with the proviso that at least one of R.sub.1, R.sub.2 and R.sub.

Abstract: Disclosed is a silver halide photographic emulsion made highly sensitive to white light by use of a combination of at least one sensitizing dye represented by the general formula: ##STR1## wherein R.sub.1 represents a hydrogen atom, an alkyl group, or an aralkyl group, R.sub.2 represents a sulfoalkyl group, or a sulfoaralkyl group, and R.sub.3 represents an unsubstituted or substituted alkyl group, and at least one sensitizing dye represented by the general formula: ##STR2## wherein W.sub.1 to W.sub.4 represent each an alkyl group, an alkoxy group, or a hydroxyl group, or a pair of W.sub.1 and W.sub.2 or a pair of W.sub.3 and W.sub.4 forms an alkylenedioxy group, provided that said pair of W.sub.1 and W.sub.2 and said pair of W.sub.3 and W.sub.4 have each at least one alkoxy or hydroxyl group or said alkylenedioxy group; R.sub.4 represents a hydrogen atom, an alkyl group, an aralkyl group, or an aryl group; R.sub.5 represents a sulfoalkyl group or a sulfoaralkyl group; and R.sub.

Abstract: A silver halide photographic emulsion comprising silver halide, binder, and sensitizing dyes of formulas (I), (II), (III): ##STR1## R.sub.1, R.sub.2 represent substituted or unsubstituted alkyl, one of R.sub.1 and R.sub.2 being sulfoalkyl or carboxyalkyl; R represents alkyl or aralkyl; W.sub.1, W.sub.2, W.sub.3, W.sub.4, being the same or different, represent hydrogen, halogen, aryl, alkyl, substituted alkyl, alkoxy, alkoxycarbonyl, carboxy, or hydroxy, provided W.sub.1 and W.sub.2 are not both a phenyl; X.sup..crclbar. represents an acid anion; n represents 1 or 2, n being 1 when the dye forms an intramolecular salt; ##STR2## R.sub.4, R.sub.5 represent substituted or unsubstituted alkyl; at least one of R.sub.4 and R.sub.5 being sulfoalkyl or carboxyalkyl; R.sub.3 represents ethyl, propyl, or aralkyl; V.sub.1, V.sub.2, V.sub.3, V.sub.4, V.sub.5, V.sub.6, V.sub.

Abstract: A silver halide photographic light-sensitive material comprising a support having provided thereon at least one silver halide emulsion layer in which at least 50% of the total projected surface area of the total silver halide grains comprises tabular silver halide grains having a means aspect ratio of 5:1 or more and which has been spectrally sensitized by a specific combination of sensitizing dyes. The material exhibits excellent stability on storage.

Abstract: An inner latent image type silver halide photographic emulsion which is spectrally sensitized by adding at least one cyanine dye represented by general formula (II) to a direct positive inner latent image type silver halide photographic emulsion and thereafter adding additionally at least one cyanine dye represented by general formula (I) to said emulsion ##STR1## (the symbols are as defined in the appended claims). A remarkable increase of spectral sensitivity, an increase of maximum density and a decrease of minimum density can be obtained by this silver halide photographic emulsion.

Abstract: A silver halide photographic emulsion is disclosed which contains at least one of benzimidazolocarbocyanine dyes represented by the general formula (I) or (II): ##STR1## wherein a represents an integer of 1 to 8, R.sub.1, R.sub.2 and which may be identical with or different from one another, represent each --CH.sub.2 (CF.sub.2).sub.b H or a substituted or unsubstituted alkyl group, but at least one of R.sub.1, R.sub.2 and R.sub.3 contains an acid group-containing alkyl group, wherein b, which may be identical with or different from a, represents an integer of 1 to 8, l represents 0 or an integer of 1 to 8, and m represents 0 or an integer of 1 to 8, but l+m>0; R.sub.4, R.sub.5 and R.sub.6, which may be identical or different from one another, represent each --(CH.sub.2).sub.j (CF.sub.2).sub.k F or a substituted or unsubstituted alkyl group, but at least one of R.sub.4, R.sub.5 and R.sub.6 represents an acid group (for example, sulfo group or carboxyl group, etc.

Abstract: A silver halide photographic emulsion is disclosed. The emulsion includes a silver halide emulsion which has dispersed therein at least three types of sensitizing dyes. The emulsion includes at least one dye represented by the formula (I), at least one dye represented by the formula (II) and at least one dye represented by the formula (III). Each of the structural formulae and their substituents are defined within the specification. The resulting silver halide photographic emulsion shows a small decrease in the inherent sensitivity of the silver halide due to the sensitizing dye used.

Abstract: A silver halide color photographic material having, on a support, at least one light-sensitive emulsion layer containing a silver chlorobromide emulsion (having a chloride content of 80 mol % or less) substantially free of iodide, with the silver chlorobromide emulsion being spectrally sensitized with a combination of at least two kinds of spectral sensitizing dyes having specified formulae, and with the silver chlorobromide emulsion layer being hardened with at least one 1,3,5-triazine derivative having specified formula, whereby achieving inhibition for increase in fog upon long-range preservation thereof as finished goods without attended by decrease in developing speed.