Abstract: A photographic element with a silver halide emulsion having a maximum sensitivity in the visible region at less than 480 nm and being sensitized by a dye of formula (I): ##STR1## wherein: X.sub.1 and X.sub.2 each independently represent S, Se or O; R.sub.1 and R.sub.2 are, independently, an alkyl group; Z represents an aromatic group or heteroaromatic group that is directly appended to the benzene ring shown or is attached through a linking group provided that the atoms of the linking group are sp.sup.2 hybridized, or Z can be a fused aromatic ring group; the benzene rings shown can be further substituted or unsubstituted, and; A' is one or more ions as needed to balance the charge on the molecule.

Abstract: Improved photothermographic elements are spectrally sensitized with cyanine dyes that provide efficient sensitization together with excellent keeping stability and low dye stain. The photothermographic elements comprise a photosensitive silver halide, an organic silver salt, such as silver behenate, and a reducing agent. The cyanine dye utilized as a spectral sensitizer for the silver halide is an anionic cyanine dye comprising two thiazole nuclei each of which is substituted with an N-sulfoalkyl group wherein at least one of the thiazole nuclei is a 5,6-dihalobenzothiazole nucleus.

Abstract: Improved photothermographic elements are spectrally sensitized with a combination of cyanine dyes that provides efficient sensitization together with excellent keeping stability and low dye stain. The photothermographic elements comprise a photosensitive silver halide, an organic silver salt, such as silver behenate, and a reducing agent. The dye combination utilized as a spectral sensitizer for the silver halide is a combination of a first cyanine dye containing two thiazole nuclei and a second cyanine dye containing a thiazole nucleus and an oxazole nucleus.

Abstract: A silver halide photographic light-sensitive material is disclosed, which comprises a support and provided thereon, a silver halide emulsion layer containing a crown ether having a 18-membered ring condensed with at least one aromatic ring and silver halide grains having a (100) face and satisfying the following inequality:15.ltoreq.Kwherein K is defined to be (intensity of a diffraction line attributed to a (200) face)/(intensity of a diffraction line attributed to a (222) face).

Abstract: The present invention relates to polymethine spectral sensitising dyes comprising at least one intracyclic thioether function macrocycle.These special sensitising dyes may be used in silver halide photographic products.These spectral sensitising dyes improve the sensitivity of the photographic products whilst reducing the residual dye stain.

Abstract: A photosensitive element having a photosensitive medium comprising silver halide in reactive association with an organoborate salt and wherein said medium is selected from:(a) silver halide photographic emulsions comprising a cationic dye, and(b) photothermographic media comprising in one or more layers a reducible silver source, a reducing agent for silver ion and an antifoggant.

Abstract: A heat developing photosensitive member including: a photosensitive layer containing at least an organic silver salt, a reducing agent and a photosensitive silver halide or a photosensitive silver halide forming agent; and a supporting member for supporting the photosensitive layer thereon, wherein merocyanine dye having a structure in which a thiazole nucleus or selenazole nucleus and hydantoin nucleus, thiohydantoin nucleus or selenohydantoin nucleus are combined with each other by a combining group having a methine group is contained in the photosensitive layer.

Abstract: The present invention provides a high sensitivity silver halide photographic material which minimizes the formation of fog and exhibits a small sensitivity drop during storage. A silver halide photographic material is provided comprising a compound having a methine dye and a styryl base covalently connected to each other.

Abstract: Disclosed herein is a silver halide color photographic light-sensitive material which has a specific photographic sensitivity of 320 or more, and which comprises a support layer and silver halide emulsion layers formed thereon. The material has a film thickness of 22 .mu.m or less, measured from the light-sensitive layer closest to the support layer up to the surface of the material facing away from the support layer. At least one of the silver halide emulsion layers contains a spectral sensitizer represented by the following formula (I): ##STR1## In the formula, R.sup.1 and R.sup.2 are alkyl groups, at least one of which at least one carbon atom bonds together with at least three atoms other than hydrogen atoms, X is an anion, p is 0 or 1, k is 0, 1 or 2, L.sub.1 and L.sub.2 are a methyne group or a substituted methyne group, Z.sup.1 and Z.sup.2 are groups of atoms numerous enough to form a 5- or 6-membered nitrogen-containing heterocyclic ring.

Abstract: A photographic element having a silver halide emulsion sensitized by dye of the formula I: ##STR1## wherein: R.sup.1 represents a substituted or unsubstituted aromatic or heteroaromatic group, a substituted or unsubstituted alkyl or H;R.sup.2 represents a substituted or unsubstituted alkyl, alkenyl, aryl, aralkyl, or H;E.sup.1 represents an electron withdrawing group;Z represents the non-metallic atoms required to complete a substituted or unsubstituted ring system containing at least one 5- or 6-membered heterocyclic nucleus;L.sup.1, L.sup.2, L.sup.5 and L.sup.6 independently represent a substituted or unsubstituted methine;m may be 0, 1, 2 or 3;n may be 0 or 1.

Abstract: A color photographic element has a blue sensitive tabular grain silver halide emulsion layer the halide content of which is less than 80% chloride and which has a tabularity of at least 8. The foregoing emulsion is sensitized such that the wavelength of maximum sensitivity of the emulsion between 400-500 nm (".lambda..sub.Bmax "), the sensitivity at 485 nm ("S.sub.485 "), the sensitivity at 410 nm ("S.sub.410 "), and the sensitivity at .lambda..sub.Bmax (".lambda..sub.Bmax "), are defined by:430 nm.gtoreq..lambda..sub.Bmax .gtoreq.440 nm or 450 nm.gtoreq..lambda..sub.Bmax .gtoreq.480 nmandS.sub.485 .gtoreq.50% (S.sub.Bmax)S.sub.410 .gtoreq.60% (S.sub.Bmax)and the maximum sensitivity of the emulsion between 430-440 nm ("S.sub.(430-440)max "), and the maximum sensitivity between 450-480 nm ("S.sub.(450-480)max "), have the following relationship:90% (S.sub.(450-480)max).gtoreq.S.sub.(430-440)max .gtoreq.110%(S.sub.(450-480)max).

Abstract: There is disclosed a silver halide color photographic material having a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a blue-sensitive silver halide emulsion layer, which comprises a cyan dye-forming coupler represented by formula (Ia) and (a) a sensitizing dye containing a sulfonamide group, (b) negative-type internal latent image-type silver halide grains chemically sensitized to a defined depth from the surface, (c) grains each having a defined spectral sensitivity distribution and a DIR-hydroquinone, (d) a monodisperse silver halide emulsion, (e) non-photosensitive silver halide emulsion wherein the inside or the surface of grains is fogged, (f) a colloidal silver, or (g) a DIR-hydroquinone: ##STR1## wherein Za represents --NH-- or --CH(R.sub.3)--, Zb and Zc each represent --C(R.sub.4).dbd. or --N.dbd., R.sub.1, R.sub.2, and R.sub.3 each represent an electron-attracting group wherein the Hammett substituent constant .sigma..sub.p value is 0.

Abstract: A novel silver halide photographic material is provided, comprising at least one methine compound having a methine dye and hydrazine covalently bonded to each other, two nitrogen atoms in said hydrazine being substituted by four substituents. In a preferred embodiment, the methine compound is represented by formula (I): ##STR1## wherein MET represents an atomic group; Q represents a divalent bonding group consisting of atoms or atomic group containing at least one of carbon atom, nitrogen atom, sulfur atom and oxygen atom; Hy represents an atomic group having a hydrazine structure represented by formula (II); k.sub.1 represents 0 or an integer 1 to 4; and k.sub.2 represents 0 or 1, and k.sub.3 represents an integer 1 to 4. ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents an alkyl group, an aryl group or a heterocyclic group, with the proviso that Hy is substituted by at least one --(Q).sub.k2 -(MET).sub.k1. A novel methine compound is also provided represented by the general formula (I).

Abstract: There is disclosed a silver halide photographic material which is rapidly processable, high sensitive and small in variations in sensitivity between production lots of the photograhic material. The silver halide photographic material comprises a silver halide emulsion layer containing a cyan dye forming coupler, a silver halide emulsion layer containing a magenta dye forming coupler, and a silver halide emulsion layer containing a yellow dye forming coupler on a reflective support, wherein at least one layer of said silver halide emulsion layers comprises silver halide emulsion grains and compounds represented by the following general formulas (I) and (II), said emulsion grains being tabular silver halide emulsion grains having (100) planes as main planes and a silver chloride content of 90 mol % or more, and further the mean bromide ion content on surfaces of said emulsion grains is twice or more that of the whole emulsion grains: ##STR1## wherein the substituents are as defined herein the specification.

Abstract: A color photographic material comprising at least one cyan-coupling silver halide emulsion layer containing a red sensitizer, at least one magenta-coupling silver halide emulsion layer containing a green sensitizer and at least one yellow-coupling silver halide emulsion layer containing a blue sensitizer on a support, in which a silver halide emulsion is provided in a coupler-free layer sensitized with another spectral sensitizer (a gap sensitizer) of which the sensitization maximum lies between the sensitization maxima of the red- and green-sensitive layers or the green- and blue-sensitive layers, is distinguished by an extended gradation range towards the maximum densities and by distinctly improved detail reproduction in the region of high densities.

Abstract: Photothermographic elements of the photothermographic type may be sensitized to the infrared with sensitizing dyes of the formula: ##STR1## wherein: R.sup.1 represents a (CH.sub.2).sub.n --COO.sup.- group of from 1-20 carbon atoms, or an alkyl group of from 1 to 20 carbon atoms; andn is an integer from 1 to 20.

Abstract: A silver halide photographic material is disclosed which comprises at least one of methine compounds represented by the following formula (I) ##STR1## wherein R.sub.1 represents a substituted or unsubstituted alkyl group; V.sub.1, V.sub.2, V.sub.3, V.sub.4, V.sub.5, V.sub.6 and V.sub.7 are the same or different and each represents a hydrogen atom or a substituent; X.sub.1 represents a halogen atom; L.sub.1, L.sub.2 and L.sub.3 are the same or different and each represents a substituted or unsubstituted methine group; E represents an auxochrome; n represents a number of 0 or more; M.sub.1 represents an ion for neutralizing charge; and m.sub.1 represents a number of 0 or more necessary for neutralizing the molecular charge.

Abstract: A color photographic silver halide material having at least one silver halide emulsion layer which is cyan coupling and contains a red sensitizer, at least one magenta coupling silver halide emulsion layer containing a green sensitizer and at least one yellow coupling silver halide emulsion layer containing a blue sensitizer on a support, in which the at least one blue sensitive halide emulsion layer contains a further spectral sensitizer (gap sensitizer) whose sensitization maximum lies between the sensitization maxima of the red and green sensitive silver halide emulsion layer and/or the at least one red sensitive silver halide emulsion layer contains an additional spectral sensitizer (gap sensitizer) whose sensitization maximum lies between the sensitization maxima of the green sensitive and the blue sensitive silver halide emulsion layer is distinguished by an increased range of gradations in the region of the maximum densities and a markedly improved detail reproduction in the region of high densities.

Abstract: An improved image display material comprising a light sensitive tabular grain silver chloride emulsion spectrally sensitized to a peak wavelength of less than about 475 nm, and a method of use comprising the step of optically printing a color image onto the improved color photographic display material is provided. The material and method enable reduced printing times, improved color reproduction and lowered image granularity.

Abstract: A heat-developable color light-sensitive material comprising a support having thereon at least three silver halide emulsion layers each sensitive to a different spectral wavelength region, one silver halide emulsion layer or a light-insensitive layer adjacent thereto containing a yellow dye-providing compound, a second silver halide emulsion layer or a light-insensitive layer adjacent thereto containing a magenta dye-providing compound and a third silver halide emulsion layer or a light-insensitive layer adjacent thereto containing a cyan dye-providing compound; at least one of said silver halide emulsion layers having a maximum spectral sensitivity at a wavelength of at least 700 nm and a spectral sensitivity at a wavelength 20 nm longer than said maximum spectral sensitivity wavelength of at most 1/10 of said maximum spectral sensitivity.

Abstract: A methine compound having a benzoxazole nucleus substituted by a meta-substituted aryl group and the methine compound represented by the following formula ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each represents a substituted or unsubstituted alkyl group; Z.sub.1 represents an atomic group necessary for forming a five-membered or six-membered nitrogen-containing heterocyclic ring; R.sub.3 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aryloxy group, a halogen atom, a substituted or unsubstituted alkylthio group, or a substituted or unsubstituted heterocyclic group; L.sub.1, L.sub.2 and L.sub.3 are the same or different and each represents a substituted or unsubstituted methine group; n represents 0, 1, 2 or 3; M.sub.1 represents an ion for neutralizing charge; and m.sub.1 represents a number of 0 or more necessary for neutralizing the molecular charge.

Abstract: An image is formed in a color photosensitive material through scanning exposure by using at least one semiconductor laser excited solid laser including a semiconductor laser, a non-linear optical element and means for controlling the temperature thereof as a light source for producing a laser beam. The laser beam is modulated by an external modulator in accordance with the image to be formed. Among the combinations of photosensitive layers and laser beams, at least two laser beam light sources are such that a laser beam has a wavelength falling within .+-.20 nm from the maximum wavelength in the spectral sensitivity distribution of the corresponding photosensitive layer. Each photosensitive layer has a spectral sensitivity distribution with a peak width of up to 40 nm.

Abstract: A light-sensitive silver halide photographic material is disclosed. The light-sensitive material comprises a support having thereon a silver halide emulsion layer, and the silver halide emulsion layer comprises silver halide grains having a silver chloride content of not less than 95 mol %. The emulsion is optically sensitized by addition of a dispersion of an optical sensitizer comprising a medium and particles of the dye dispersed in the medium. The ratio of silver to gelatin (Ag/Gel) in the emulsion at the time of addition of the dispersion of the dye is 2 to 8.5.

Abstract: A silver halide photographic light-sensitive material contains a methine compound represented by the following formula: ##STR1## wherein Y.sup.1 is a group which is cleavable by a nucleophile; Z.sup.1 is --O--, --S--, or other; Z.sup.2 is --O--, --S--, --CR.sup.3 R.sup.4 (wherein each of R.sup.3 and R.sup.4 is alkyl or other), or other; A and B are each independently hydrogen, halogen, alkyl, aryl or a heterocyclic group; A and B may be linked to each other to form an unsaturated aliphatic ring, an aromatic ring or a heterocyclic ring; and Q.sup.1 is a methine or polymethine group which may have a heterocyclic group. A novel methine compound is also disclosed.

Abstract: Disclosed is a silver halide color photographic photosensitive material in which the spectral sensitivity in the green short wavelength region is increased and which has excellent storage stability. The photosensitive material is sensitized by a selenium sensitizer represented by formula (I). Also, a green light sensitive photosensitive silver halide emulsion layer has been spectrally sensitized with a sensitizing dye represented by formula (II).

Abstract: Disclosed is a method for forming color photographic images which comprises printing of color images obtained by use of a color photographic light-sensitive material, having on a support, a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer onto a printing color photographic light-sensitive material having on a support, a yellow color forming layer, a magenta color forming layer and a cyan color forming layer, wherein the following requirements (A) and (B) are fulfilled,(A) wavelength .lambda..sub.B.sup.max to give the maximum value in spectral sensitivity distribution of a blue-sensitive silver halide emulsion layer is within the limits of 415 nm to 470 nm, and the sensitivity of the blue-sensitive emulsion layer at 480 nm is not more than 35% of the sensitivity at .lambda..sub.B.sup.

Abstract: A silver halide photosensitive photographic material comprising a support and provided thereon, photographic component layers including at least one silver halide emulsion layer is disclosed, wherein the photosensitive silver halide grains contained in all the silver halide emulsion layers have an average silver iodide content ranging from 0 to 3 mol % and contain at least silver bromide; and at least one of the silver halide emulsion layers contain a diequivalent phenolic cyan dye-forming coupler having a ureido group in a 2-position of a phenolic nucleus.

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 light-sensitive material includes at least one light-sensitive silver halide emulsion layer on a support. A silver halide emulsion contained in at least one emulsion layer contains grains having an average grain diameter of 0.3 .mu.m or more, an average grain thickness of less than 0.5 .mu.m and an average grain diameter/average grain thickness ratio of 2 or more in a percentage of at least 50% of a total projected area of emulsion grains. The emulsion is chemically sensitized in the presence of at least one compound represented by the following formula (I): ##STR1## wherein X represents hydrogen or alkaline metal, and R represents hydrogen, halogen or alkyl having 1 to 5 carbons.

Abstract: An azomethine dye is disclosed, represented by the general formula (I), (II) or (III): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each independently represents a hydrogen atom or nonmetallic atom group; X represents --OH or --NR.sup.5 R.sup.6 ; R.sup.5 and R.sup.6 each independently represents a hydrogen atom, alkyl group, aryl group or heterocyclic group; R.sup.7, R.sup.8, R.sup.9, R.sup.10, R.sup.11, R.sup.12 and R.sup.13 each independently represents a hydrogen atom or nonmetallic atom group; and R.sup.1 and R.sup.2, and/or R.sup.2 and R.sup.5, and/or R.sup.5 and R.sup.6, and/or R.sup.6 and R.sup.3, and/or R.sup.3 and R.sup.4, and/or R.sup.7 and R.sup.8, and/or R.sup.9 and R.sup.10, and/or R.sup.11 and R.sup.12, and/or R.sup.12 and R.sup.13 may be connected to each other to form a cyclic structure.

Abstract: Disclosed is a silver halide photographic material containing at least one methine compound of formula (I) or (II): ##STR1## wherein A.sub.1 : ##STR2## and wherein Z.sub.1, Z.sub.2, Z.sub.3 and Z.sub.4 each is an atomic group of forming a 5- or 6-membered N-containing heterocyclic ring; R.sub.1, R.sub.2 and R.sub.4 each is an alkyl group; R.sub.3 is an alkyl, aryl or heterocyclic group; D.sub.1, D.sub.1a, D.sub.2 and D.sub.2a each is an atomic group of forming an acidic nucleus; V.sub.1 to V.sub.22 each is a hydrogen or a monovalent substituent; L.sub.1 to L.sub.12 each is a methine group; M.sub.1 and M.sub.2 each is a charge-neutralizing pair ion; m.sub.1 and m.sub.2 each is a number of 0 or more for neutralizing the charge in the molecule; n.sub.1, n.sub.2 and n.sub.4 each are 0 or 1; and n.sub.3 and n.sub.5 each is an integer of 0 or more. The material has a high sensitivity and storage stability.

Abstract: The improved silver halide photographic material is such that the silver halide grains contained in at least one light-sensitive silver halide emulsion layer are spectrally sensitized with a sensitizing dye represented by the following general formula: ##STR1## where R.sup.1 and R.sup.2 each represents an alkyl group having 1-10 carbon atoms or an alkenyl group having 3-10 carbon atoms; R.sup.3 represents a hydrogen atom, a heterocyclic group, an aryl group or an alkyl group; R.sup.4 and R.sup.5 each represents an alkyl group; Z.sup.1 represents the group of non-metallic atoms necessary to form a 5-membered monocyclic or condensed nitrogenous hetero ring; L.sup.1 and L.sup.2 each represents a methine group, provided that R.sup.1 or R.sup.2 may combine with L.sup.1 or L.sup.2, respectively, to form a 5- or 6- membered hereto ring; X.sup.1 represents an ion that cancels an electric charge in the molecule; .sup.1 represents the number of ions necessary to cancel electric charges in the molecule.

Abstract: This invention relates to photographic silver halide emulsions spectrally sensitized to infrared radiation above 800 nm and to a class of pentamethine cyanine dyes of 5-fluorobenzothiazole derivatives useful as the infrared sensitizing dyes.

Abstract: A silver halide photographic emulsion contains chemically sensitized silver halide grains each of which has at least one structure resulting from the difference in halogen compositions. The grains have been prepared in the presence of an oxidizing agent for silver. A silver halide photographic light-sensitive material has at least one layer of the silver halide emulsion on a support.

Abstract: Silver halide photographic elements which are capable of high-contrast development and are especially useful in the field of graphic arts comprise surface latent image forming high-chloride silver halide grains and have incorporated therein a hydrazine compound which functions as a nucleator, an amino compound which functions as an incorporated booster, and a benzimidazolocarbocyanine sensitizing dye that provides enhanced photographic sensitivity yet leaves substantially no sensitizing dye stain after rapid access processing.

Abstract: A method of processing a photographic element having a layer comprising a silver halide emulsion sensitized with a cyanine dye where the dye is present in the processing solution at a concentration sufficient to cause formation of solid dye particles. The method comprises contacting the element with at least one processing solution in the presence of an effective amount of a dye solubilizing compound of the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are each independently selected from the group consisting of ##STR2## halogen, hydrogen, hydroxy, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, substituted or unsubstituted alkoxy, and sulfo,R.sub.5 and R.sub.6 are each independently selected from the group consisting of hydrogen, substituted or unsubstituted alkyl, and substituted or unsubstituted aryl, with the proviso that the dye solubilizing compound comprises at least four solubilizing groups as substituents on R.sub.5 's or R.sub.

Abstract: Disclosed is a silver halide emulsion, which comprises at least one methine dye represented by the general formula (I): ##STR1## wherein MET represents an atomic group having a methine dye structure; Q represents a divalent linking group containing at least one carbon, nitrogen, sulfur or oxygen atom; l.sub.1 represents an integer 1 or 2; l.sub.2 represents an integer 0 or 1, l.sub.3 represents an integer from 1 to 4; and Ar represents an aromatic polycyclic group formed of 8 or more atoms containing at least one nitrogen atom, with the proviso that said nitrogen atom is in a form such that tautomerism does not produce ##STR2## A silver halide photographic material is also disclosed which comprises on a support a silver halide photographic emulsion layer comprising silver halide grains containing iron ions and having a localized phase with a high iron ion concentration and at least one methine dye represented by general formula (I') and which exhibits a blue sensitivity difference of 0.

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: 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: There is disclosed a silver halide photographic light-sensitive material comprising a support and provided thereon, at least one silver halide light-sensitive layer spectrally sensitized by adding a spectral sensitizing dye during at least one process selected from a grain formation process, a physical reopening process and a desalting process, wherein said light-sensitive material contains at least one selected from the compounds represented by following Formula A: ##STR1## wherein R.sub.1 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an alkoxy group, an aryl group, a heterocyclic group, a carbamoyl group, a thiocarbamoyl group, and a sulfamoyl group; R.sub.2 and R.sub.3 represent independently a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an aryl group, a cyano group, an alkylthio group, an arylthio group, an alkylsulfoxide group, an alkylsulfonyl group, and a heterocyclic group, provided that R.sub.2 and R.sub.

Abstract: A process for preparing a silver halide emulsion is disclosed, which comprises dissolving one or more substantially water-insoluble photographic additives in a solution of an organic solvent containing a surface active agent having a hydrophilic -SO.sub.3 or --OSO.sub.3 group wherein said organic solvent is an alcohol, and then adding the resulting solution to a silver halide emulsion. A small amount of a base, or small amounts of a base and an acid may optionally be present in the mixed solution of the organic solvent and the surface active agent prior to adding the one or more substantially water-insoluble photographic additives.

Abstract: Disclosed is a silver halide photographic light-sensitive material which has a hydrophilic colloid layer containing at least one of the dyes represented by the following formulas (I) and (II): ##STR1## wherein R.sup.1 and R.sup.2 may be identical or different and each represents an alkyl group; Y.sup.1 and Y.sup.2 may be identical or different and each represents a group of atoms necessary to form a hydrocarbon ring together with the carbon atom at 3-position of indole ring; L represents a methine group; the dye molecule has at least three acid substituents; X.sup..theta. represents an anion; and n is 1 or 2 and is 1 when the dye form an inner salt, ##STR2## wherein R.sub.1 and R.sub.2 may be identical or different and each represents a substituted or unsubstituted alkyl group; Z.sub.1 and Z.sub.2 each represents a group of non-metallic atoms necessary to form a substituted or unsubstituted benzo condensed ring or naphtho condensed ring, with a proviso that R.sub.1, R.sub.2, Z.sub.1 and Z.sub.

Abstract: Color photographic recording material having a layer support and at least one silver halide emulsion layer sensitive to blue light, in which the silver halide of the blue sensitive silver halide emulsion layer is sensitized with a blue sensitizer of the J-band type and contains at least 95 mol % of silver chloride is distinguished by high sensitivity with low fog.

Abstract: A photographic element is described comprising a support having thereon a silver halide emulsion layer where the silver halide is sensitized with a dye having the formula: ##STR1## wherein where Z.sub.1, Z.sub.2, Z.sub.3, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and X are as defined herein.

Abstract: Silver halide photographic material having a hydrophilic colloidal layer that contains at least one cyanine dye with a 3H-pyrolopyridine, 4H-thienopyrrole, 6H-thienopyrrole, 4H-furopyrrole or 6H-furopyrrole nucleus which has in its dye molecule at least two acid groups or at least two substituents each having at least one --CH.sub.2 CH.sub.2 OR group (where R is a hydrogen atom or an alkyl group).

Abstract: A process or the preparation of a silver halide photographic emulsion is provided which comprises the addition of at least one pendant type spectral sensitizing dye containing as a substituent a compound having the effect of inhibiting fog at any time after the formation of silver halide grains, but before the completion of the chemical ripening process. In a preferred embodiment, the addition of said pendant type spectral sensitizing dyes is effected at any time after the formation of silver halide grains, but before former one second of the total time of the chemical ripening process. The pendant type spectral sensitizing dyes are compounds represented by the general formula (III) or (IV): ##STR1## wherein SSD represents a sensitizing dye portion; AF represents a compound portion containing a saturated or unsaturated 5- to 7-membered ring containing at least one nitrogen atom; L.sup.1 represents a divalent connecting group containing at least one of C, N, S and O; L.sup.2 has the same meaning at L.sup.

Abstract: A process for preparing a silver halide emulsion is disclosed, which comprises dissolving one or more substantially water-insoluble photographic additives in a solution of an organic solvent containing a surface active agent having a hydrophilic --SO.sub.3 or --OSO.sub.3 group wherein said organic solvent is an alcohol, and then adding the resulting solution to a silver halide emulsion. A small amount of a base, or small amounts of a base and an acid may optionally be present in the mixed solution of the organic solvent and the surface active agent prior to adding the one or more substantially water-insoluble photographic additives.

Abstract: A silver halide photographic material is disclosed, comprising a support having thereon an emulsion layer comprising a dispersion medium, silver halide grains, and a pendant type sensitizing dye, wherein said pendant type sensitizing dye is a compound comprising a sensitizing dye and an antifoggant, each of which may have substituent groups and wherein said sensitizing dye and antifoggant are organochemically bonded.

Abstract: A photographic light-sensitive material comprising, on a support, at least one silver halide emulsion layer containing silver halide grains, wherein at least 50% of the total projected surface area of silver halide grains contained in the silver halide emulsion layer is occupied by tabular grains comprising at least about 50 mol% of silver chloride, the tabular grains having been precipitated in the presence of a dye and having an aspect ratio of at least 2.

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.