Abstract: Disclosed is a silver halide photographic material which comprises at least one methine dye represented by the following formula (I): wherein Y represents a furan ring or a pyrrole ring, and Y may further be condensed with other 5- or 6-membered carbocyclic ring or heterocyclic ring, or may have a substituent; the bond between two carbon atoms in which Y is condensed may be a single bond or a double bond; Z represents an atomic group necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring, and Z may further be condensed with other 5- or 6-membered carbocyclic ring or heterocyclic ring; R represents a substituted or unsubstituted alkyl group, aryl group, or heterocyclic group; D represents a group necessary to form a methine dye; L1 and L2 each represents a methine group; p represents 0 or 1; M represents a counter ion; and m represents a number of 0 or higher necessary to neutralize the charge in the molecule.

Abstract: A photothermographic material comprising a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for a silver ion and a binder on one surface of a support, wherein a silver behenate-content of the non-photosensitive organic silver salt is 40 to 70 mol %, and the photothermographic material comprises a compound that can be one-electron-oxidized to provide a one-electron oxidation product, which further releases at least 1 electron, one of during and after a subsequent reaction.

Abstract: A silver halide photographic material including at least one methine dye represented by the following general formula (I) and at least one coupler represented by the following general formula (XX): wherein X1 and X2 each represents an oxygen atom, a sulfur atom, a selenium atom, a tellurium atom, or a nitrogen atom; Y1 represents a furan, pyrrole or thiophene ring which may be condensed with another 5- or 6-membered carbon ring or heterocycle or may have a substituent group; Y2 represents an atomic group necessary for forming a benzene ring or a 5- or 6-membered unsaturated heterocycle, which may be further condensed with another 5- or 6-membered carbon ring or heterocycle or may have a substituent group; a bond between two carbon atoms by which Y1 and Y2 are each condensed with the carbon ring or the heterocycle may be a single bond or a double bond; R1 and R2 each represents a substituted or unsubstituted alkyl, aryl or heterocyclic group; L1, L2 and L3 each represents a methine group; n1 represents 0 o

Abstract: A silver halide photographic material comprising at least one methine dye of formula (I) and at least one coupler of formula (X): wherein X1 and X2 each represents O, S, Se, Te, N or C; Y1 represents a furan, pyrrole or thiophene ring which may be condensed and substituted with the specific ring; Y2 represents an atomic group necessary for forming a benzene ring or a 5- or 6-membered unsaturated heterocycle; R1 and R2 each represents a substituted or unsubstituted alkyl, aryl or heterocyclic group; L1, L2 and L3 each represents a methine group; n1 represents 0 or 1; M1 represents a counter ion; and m1 represents a number of 0 or more necessary for neutralizing a charge in a molecule; wherein Z1 and Z2 each represents —C(Q3)═ or —N═; Q1 and Q3 each represents a hydrogen atom or a monovalent substituent group; Q2 represents a hydrogen atom or a coupling release group.

Abstract: A high-sensitive silver halide photographic light-sensitive material is provided. A silver halide photographic light-sensitive material comprising a dye having a plurality of dye chromophores, which contains at least one dye where at least one of the dye chromophores is a methine dye chromophore containing a basic nucleus comprising a monocyclic heterocyclic ring.

Abstract: A silver halide emulsion comprises an electron-releasing compound of Types 1 to 4: (Type 1) a compound capable of undergoing a one-electron oxidation (1-EO) to form a one-electron oxidation product (1-EOP), the 1-EOP capable of releasing further two or more electrons accompanying a subsequent bond cleavage reaction, (Type 2) a compound capable of undergoing 1-EO to form 1-EOP, the 1-EOP capable of releasing further one electron accompanying a subsequent bond cleavage reaction, and having, in its molecule, two or more adsorptive groups acting on silver halides, (Type 3) a compound capable of undergoing 1-EO to thereby form 1-EOP, the 1-EOP capable of releasing further one or more electrons after going through a subsequent bond forming process, and (Type 4) a compound capable of undergoing 1-EO to form 1-EOP, the 1-EOP capable of releasing further one or more electrons after going through a subsequent intramolecular ring cleavage reaction.

Abstract: A heat-developable photosensitive material comprises: a support; a photosensitive silver halide; a non-photosensitive organic silver salt; a reducing agent for a silver ion; a binder; and a compound having specified structure.

Abstract: A silver halide photographic emulsion is disclosed, comprising a silver halide grain having a spectral absorption maximum wavelength of less than 500 nm and a light absorption intensity of 60 or more or having a spectral absorption maximum wavelength of 500 nm or more and a light absorption intensity of 100 or more, wherein assuming that a maximum value of the spectral absorption factor of said emulsion by a sensitizing dye is Amax, the distance between the shortest wavelength showing 80% of Amax and the longest wavelength showing 80% of Amax is 20 nm or more and the distance between the shortest wavelength showing 50% of Amax and the longest wavelength showing 50% of Amax is 120 nm or less.

Abstract: This invention comprises a silver halide photographic material comprising at least one silver halide emulsion comprising silver halide grains having associated therewith a combination of two or more dyes comprising: (a) a first dye which is a cyanine dye of formula Ia and has a net charge of zero or −1  wherein the substituents are as defined in the specification; (b) a second dye which has at least one substituent that has a positive charge, and is a cyanine dye a merocyanine dye, arylidene dye, complex cyanine dye, complex merocyanine dye, homopolar cyanine dye, hemicyanine dye, styryl dye, hemioxonol dye, oxonol dye, anthraquinone dye, triphenylmethane dye, azo dye type, azomethines, or a coumarin dye, with the proviso that if the second dye is a cyanine dye, it is of formula IIa:  wherein the substituents are as defined in the specification; and wherein (c) the wavelength of maximum light absorption, in nanometers (nm), of the first dye and the wavele

Abstract: This invention comprises a photographic element comprising a support and at least one blue sensitive silver halide emulsion layer containing a tabular grain silver halide emulsion, or an emulsion in which the halide content is at least 50% chloride and no more than 5% iodide, wherein the emulsion is spectrally sensitized with at least one dye providing a peak sensitization between 446 and 500 nm and at least one dye providing a peak sensitization between 400 and 445 nm and additionally sensitized with a fragmentable electron donor of the formula: X—Y′. or an electron donor which contains an —XY′ moiety; wherein X is an electron donor moiety, Y′ is a leaving proton H or a leaving group Y, with the proviso that if Y′ is H a base, &bgr;−, is covalently linked directly or indirectly to X. and wherein: 1) X—Y′ has an oxidation potential between 0 and about 1.

Abstract: A red or infrared sensitive silver halide emulsion is disclosed, comprising at least a compound represented by the following formula. A photographic material containing the emulsion is also disclosed.

Abstract: A method of processing a silver halide photographic material is disclosed, comprising on a support a light sensitive silver halide emulsion layer, wherein the light-sensitive layer contains a spectral-sensitizing dye represented by formula (1-a); a developer solution contains a developing agent represented by formula (A); and the replenishing rate of a processing solution is determined based on the proportion of an exposed area per unit area of the photographic material to perform replenishment.

Abstract: According to the present invention there is provided a class of IR-sensitizing dyes, comprising two benzoindol rings and at least two sulphonic acid groups corresponding to the general formula I:

Abstract: A black and white graphic arts film comprising a support having thereon at least one emulsion layer, said emulsion layer comprising: a trinuclear merocyanine spectral sensitising dye; 2-methylthio-4-hydroxy-6-methyl-1,3,3a,7-tetraazaindene (SMe-TAI); and a photosensitive silver halide.

Abstract: A black and white graphic arts film comprising a support having thereon at least one emulsion layer, said emulsion layer comprising:

Abstract: An object of the present invention is to provide a silver halide photographic light-sensitive material which exhibits a high sensitivity and less residual color.

Abstract: A silver halide light sensitive photographic material is disclosed, comprising a support and at least one hydrophilic colloid layer including a silver halide emulsion layer, wherein the hydrophilic colloid layer comprises a compound represented by the following formula. An image forming method by use thereof is also disclosed.

Abstract: Disclosed is a compound represented by the following formula (I): wherein Z1 represents an atomic group necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring; Z2 represents an atomic group necessary to form a 5- or 6-membered heterocyclic ring, Z2 may further be substituted, or may be condensed with a hetero ring or a benzene ring; R1 represents a hydrogen atom, a halogen atom, a mercapto group, an alkyl group, an alkenyl group, an aryl group, an alkylthio group, an alkenylthio group, or an arylthio group; L1 and L2 each represents a methine group; p1 represents 0 or 1; V1 represents a substituent; and n represents 0, 1 or 2, and when n represents 2, a plurality of V1 may be the same or different.

Abstract: A silver halide photothermographic material is disclosed, comprising a support having thereon a light-sensitive layer and light-insensitive layer, wherein the light-sensitive layer or the light-insensitive layer comprises a heteroatom-containing macrocyclic compound, and the light-sensitive layer comprising a sensitizing dye exhibiting maximum sensitivity at a wavelength of 600 nm or more.

Abstract: This invention comprises a silver halide photographic material comprising at least one silver halide emulsion comprising silver halide grains having associated therewith a combination of two or more dyes wherein (b) (a) a dye having at least one substituent that has a negative charge is present, a dye having at least one substituent that has a positive charge is present, wherein at least one of the dyes is further substituted with at least one hydrogen bonding donor substituent. In a preferred embodiment, at least one of the dyes is substituted with at least two hydrogen bonding donor substituents. In another preferred embodiment a silver halide photographic material comprises at least one silver halide emulsion comprising silver halide grains having associated therewith a dye substituted with at least one guanidinium, amidinium, or imine of urea substituent.

Abstract: This invention comprises a photographic element comprising a support and at least one silver halide emulsion layer in which the silver halide is sensitized with a compound of the formula:Q-XYwherein Q represents the atoms necessary to form a chromophore comprising an amidinium-ion, a carboxyl-ion or dipolar-amidic chromophoric system when conjugated with XY, and XY is a fragmentable electron donor moiety in which X is an electron donor group and Y is a leaving group other than hydrogen, and wherein:1) XY has an oxidation potential between 0 and about 1.4 V;2) the oxidized form of XY undergoes a bond cleavage reaction to give the radical X.sup..cndot. and the leaving fragment Y.In a preferred embodiment of the invention, the radical X.cndot. has an oxidation potential <-0.7V.

Abstract: A photographic element having a silver halide emulsion spectrally sensitized to blue light by a dye of formula (I) to have a maximum blue sensitivity at less than 485 nm. The dye allows the element to have good color reproduction while still providing good speed response despite the shorter blue sensitivity. Formula (I) is: ##STR1## wherein: X and X' each independently represent the atoms necessary to complete a thiazole, benzothiazole, naphthothiazole, oxazole, benzoxazole, naphthoxazole, selenazole, benzoselenazole, naphthoselenazole, imidazole, benzimidazole, or naphtho-imidazole, and X may be further substituted and X' substituted or unsubstituted;Z.sub.1 represents a pyrrole, furan or thiophene containing group;R.sub.1 and R.sub.2 each independently represent substituted or unsubstituted hydrocarbon containing 1 to 10 carbon atoms; andA represents a counter-ion as needed to balance a charge of the molecule.

Abstract: A silver halide photographic material which contains at least one methine compound represented by the following formula (I) or (II): wherein Z.sub.1, Z.sub.2 and Z.sub.3 each represents an atomic group necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring; R.sub.1 and R.sub.3 each represents an alkyl group; R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group; L.sub.1, L.sub.2, L.sub.3, L.sub.4, L.sub.5, L.sub.6, L.sub.7, L.sub.8 and L.sub.9 each represents a methine group; p.sub.1 and p.sub.2 each represents 0 or 1; n.sub.1 and n.sub.2 each represents 0, 1, 2, 3 or 4; M.sub.1 represents a counter ion to balance a charge; and m.sub.1 represents a number of 0 or more necessary for to neutralize a charge in the molecule; provided that at least one of R.sub.1, R.sub.2, R.sub.3, Z.sub.1, Z.sub.2, Z.sub.3, L.sub.1, L.sub.2, L.sub.3, L.sub.4, L.sub.5, L.sub.6, L.sub.7, L.sub.8 and L.sub.9 has a thioether group; ##STR1## wherein Z.sub.4, Z.sub.5 and Z.sub.

Abstract: A silver halide photosensitive material is described, which comprises at least one of the compounds represented by the following formula (I) ##STR1## wherein Z.sub.1 and Z.sub.2 each represents an atomic group necessary for forming a five- or six-membered nitrogen-containing heterocyclic ring, 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, Q represents a divalent linking group or a single bond, with the proviso that at least one of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and Q is substituted with a water-soluble group, L.sub.1, L.sub.2, L.sub.3, L.sub.4, L.sub.5, L.sub.6, L.sub.7 and L.sub.8 each represents a methine group, n.sub.1 and n.sub.2 each is 0, 1, 2, 3 or 4, p.sub.1 and p.sub.2 each is 0 or 1, M.sub.1 represents a charge equilibrium counter ion, and m.sub.1 is a number of from 0 to 10, which is necessary for neutralizing charge of the molecule.

Abstract: There is disclosed a silver halide light-sensitive material which contains a methine compound represented by general formula (1):General formula (1) ##STR1## wherein A1, A2, and A3 each represent a streptocyanine dye; L1, L2, L3, and L4 each represent a divalent linking group, and n1 represents an integer of not less than 0. The light-sensitive material exhibits high absorptivity.

Abstract: The present invention is directed to a dye suitable for spectral sensitization of a photographic element. Specifically, the dye is a compound having the structure: ##STR1## wherein: R.sup.1, R.sup.2, R.sup.3, and R.sup.4 each independently represents H; halogen; alkyl of 1-6 carbons; aryl of 6-24 carbons; alkoxy of 1-6 carbons; carbonyl; or sulfonate; or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, or R.sup.3 and R.sup.4 taken together represent the atoms necessary to complete a six-membered carbocylic ring;R.sup.5 represents hydrogen, alkyl of 1-6 carbons or aryl of 6-24 carbons;R.sup.6, R.sup.7, and R.sup.8 independently represent alkyl 1-6 carbons; aryl of 6-24 carbons; or any pair of R.sup.6, R.sup.7 and R.sup.8 taken together represent a five- or six-member heterocyclic ring;X represents O, S, CH.dbd.CH, Se, Te or N--R.sup.10 ;Y represents O, S, or N--R.sup.9 ;Z represents O, S or Se;R.sup.9 represents alkyl of 1-6 carbons; or an aryl of 6-24 carbons;R.sup.

Abstract: A silver halide photographic material is described, which contains at least one compound represented by the following formula (I): ##STR1## wherein Z represents an atomic group necessary for forming a 5- or 6-membered nitrogen-containing heterocyclic ring, R.sub.1 represents an alkyl group, R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group, R.sub.3 represents a nitrogen-containing 5-membered heterocyclic ring, L.sub.1 and L.sub.2 each represents a methine group and n represents 0 or an integer of 1 to 3.

Abstract: This invention relates to photographic light-sensitive silver halide emulsions wherein the silver grains are spectrally sensitized to near infrared radiation at wavelengths above 700 nm with a particular class of cyanine dyes and to photographic elements and film units employing such emulsions.

Abstract: Disclosed is silver halide photographic light-sensitive material comprising a support and thereon at least one light-sensitive silver halide emulsion layer, wherein at least one layer of said light-sensitive silver halide emulsion layer contains silver halide grains spectrally sensitized with a dye selected from the group consisting of Formula S-I and Formula S-II: ##STR1##

Abstract: A silver halide photographic material is described, which contains the methine compound represented by the following formula (I): ##STR1## wherein Z.sup.1 represents a nonmetal atomic group necessary for completing a 5- or 6-membered heterocyclic ring which may be condensed; R.sup.1 represents an aliphatic or aromatic group which may be substituted; G.sup.1 represents a hydroxyl group, an amino group, an aliphatic or aromatic primary amino group, a hydroxyamino group, an alkoxyamino group, an acylamino group, or an aliphatic or aromatic sulfonamido group; G.sup.2 is a group substituted at the position adjacent to G and is a group represented by T.sup.2 --C(.dbd.T.sup.1)--; .dbd.T.sup.1 represents .dbd.O, .dbd.NH, .dbd.NOH, an alkoxyimino group, an aliphatic or aromatic imino group, an acylimino group, or an aliphatic or aromatic sulfonylimino group; T.sup.

Abstract: A dry process silver salt photosensitive material has a support and provided thereon a photosensitive layer containing at least an organic silver salt, a reducing agent and a photosensitive silver halide or a photosensitive silver halide forming component. The photosensitive layer is incorporated with a compound selected from the compounds (i), (ii) and (iii).

Abstract: A silver halide color photographic material is disclosed, comrising a support provided thereon light-sensitive silver halide emulsion layers including a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer, and a non-image forming layer which is located farther from the support than the light-sensitive silver halide emulsion layers and adjacent to one of the light-sensitive silver halide emulsion layers, wherein a silver halide emulsion contained in the layer adjacent to the non-image forming layer is spectrally sensitized by adding a water-insoluble sensitizing dye in the form of solid particles dispersed in an aqueous medium; and the non-image forming layer contains a substantially light-insensitive silver halide fine grain emulsion having an average grain size of not more than 0.05 .mu.m and an average iodide content of 0.5 to 3.0 mol %.

Abstract: The improved silver halide photographic material has one or more silver halide emulsion layers on a support and at least one of said emulsion layers contains silver halide grains which are of normal crystal form having at least one concave crystal face. This photographic material has not only high sensitivity but also good keeping quality.

Abstract: A silver halide photographic photosensitive material comprises a silver halide photographic emulsion layer and a compound represented by general formula (I): ##STR1## wherein V.sub.1 and V.sub.2 each represents a hydrogen atom, an alkyl group or an alkoxy group; at least one of V.sub.1 and V.sub.2 is an alkyl group or an alkoxy group; Z.sub.1 represents a group of atoms which is required to form a five- or six-membered nitrogen-containing heterocyclic ring; Z.sub.2 represents a group of atoms which is required to form a five- or six-membered nitrogen-containing heterocyclic ring; Z.sub.3 represents an oxygen atom, a sulfur atom or a selenium atom; R.sub.1 and R.sub.3 each represents an alkyl group; R.sub.2 represents an alkyl group, an aryl group or a heterocyclic group; L.sub.1, L.sub.2 and L.sub.3 each represents a methine group; M.sub.1 represents a charge neutralizing counter-ion; and m.sub.1 is a number having a value zero or above which is required to neutralize the charge within the molecule.

Abstract: A pre-fogged direct reversal silver halide photographic material comprises on a support at least an emulsion layer comprising a previously fogged silver halide emulsion for forming a direct positive image.

Abstract: Disclosed is a silver halide emulsion having at least one methine compound of formula (I) (MET).sub.k1 --[(Q) --Ar].sub.k2, wherein MET represents an atomic group having a methine compound structure; Q represents a divalent linking group composed of atom(s) or atomic group(s) containing at least one carbon, nitrogen, sulfur or oxygen atom; Ar represents an aromatic group containing monocyclic compound(s) each composed of 5 or more atoms; k1 represents an integer of 1 or more; and k2 represents an integer of 2 or more. A photographic material containing the emulsion has high sensitivity and high storage stability.

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: A silver halide photographic light-sensitive material is disclosed which comprises a support and provided thereon, a light-sensitive silver halide emulsion layer containing silver halide grains, the silver halide grains are chemically sensitized by a selenium compound and spectrally sensitized by a dye represented by formula (S-1): ##STR1##

Abstract: Disclosed is a silver halide photographic material containing a compound of formula (1) or (2): ##STR1## where DYE represents a methine dye residue; G and G.sup.- each represent a substituent for the methine dye residue, and are represented by formulae (3) and (4), respectively; and n represents an integer of from 1 to 6.--T.sup.1 --G.sup.1 NHG.sup.2 (3)--T.sup.1 --G.sup.1 N.sup.- G.sup.2 (4)where T.sup.1 represents a divalent linking group; G.sup.1 represents a carbonyl group, a sulfinyl group, or a sulfonyl group; G.sup.2 represents --CO--T.sup.2 --, --SO--T.sup.2, --SO.sub.2 --T.sup.2, or a cyano group; and T.sup.2 represents a monovalent group. The spectral sensitivity of the material is high, and the material has few residual color after processed.

Abstract: A silver halide photographic material is disclosed which contains at least one methine dye represented by the following formula (I) or (II): ##STR1## wherein Z.sub.1 and Z.sub.2 each represents an atomic group for forming a five-membered or six-membered nitrogen-containing heterocyclic ring; R.sub.1, R.sub.2, R.sub.4 and R.sub.5 each represents an alkyl group; R.sub.3 and R.sub.6 each represents an alkyl group, an aryl group or a heterocyclic group; V.sub.1 to V.sub.12 each represents a hydrogen atom or a substituent; L.sub.1 to L.sub.10 each represents a methine group; M.sub.1 and M.sub.2 each represents an ion for neutralizing charge; m.sub.1 and m.sub.2 each represents a number of 0 or more which is required for neutralizing charge; and n.sub.1 and n.sub.2 each represents 0 or 1.

Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein at least one layer contains at least one metallocene compound.

Abstract: Disclosed is a silver halide photographic light-sensitive material comprising a support and thereon at least one light-sensitive silver halide emulsion layer, wherein said silver halide emulsion layer contains a compound represented by Formula S-I and a compound represented by Formulas S-II or S-III: ##STR1##

Abstract: A photographic element containing a dye of the structure (I) as a filter dye: ##STR1## wherein: G is oxygen, substituted nitrogen, or C(CN).sub.2 ;R.sup.1, R.sup.1 ', R.sup.2, R.sup.2 ' independently represent H or a substituent, or R.sup.1 and R.sup.2, R.sup.1 ' and R.sup.2 ' may form a ring;R.sup.3 is an alky, aryl, alkyloxy, aryloxy, amino, or heterocyclic, any of which may be substituted or unsubstituted;m is 0, 1, 2 or 3;all of the L together define a methine chain, each L representing a methine any of which may be substituted or unsubstituted; andM.sup.+ is a cation.

Abstract: Disclosed is a silver halide color photographic light-sensitive material which includes, on a support, at least one blue-sensitive silver halide emulsion layer containing a yellow coupler, at least one green-sensitive silver halide emulsion layer containing a magenta coupler, and at least one red-sensitive silver halide emulsion layer containing a cyan coupler, and in which a weight-averaged wavelength (.lambda..sub.-R) of a spectral sensitivity distribution of magnitude of an interimage effect which the silver halide emulsion layers except for all of the red-sensitive silver halide emulsion layers have on the red-sensitive layers over a range of 500 to 600 nm is 500 nm<.lambda..sub.-R <560 nm, and a difference between weight-averaged wavelength (.lambda..sub.G) of a spectral sensitivity distribution of at least one green-sensitive silver halide emulsion layer and .lambda..sub.-R is .lambda..sub.G -.lambda..sub.-R .ltoreq.

Abstract: The present invention refers to a silver halide photographic element containing a support having coated thereon at least a silver halide emulsion layer spectrally sensitized with a sensitizing dye according to the formula (I): ##STR1## wherein Z represents the atoms necessary to complete a 6-membered nitrogen-containing heterocyclic nucleus; at least 2 members of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 --but not R.sub.1 and R.sub.2 together--represent an organic group carrying a water-solubilizing group in free acid form, in salt form or in latent form, and are same or different, the members of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 that do not represent a said organic radical carrying a water-solubilizing group represent hydrogen, an alkyl group, an alkenyl group or an aryl group; and n is 0 or 1.The silver halide photographic material has the advantage to have a broad sensitivity in the red portion of the spectrum. It can be exposed to laser beam sources in the range of 600-700 nm.

Abstract: A silver halide photographic material has on a support at least one light-sensitive silver halide emulsion layer which comprises silver halide emulsion grains having a chloride content: of at least 50 mol % and containing a metal selected from rhodium, ruthenium and rhenium in an amount of at least 10.sup.-8 mole per mole of silver, said silver halide emulsion being spectrally sensitized with a compound of general formula (I) and being chemically sensitized with a selenium or tellurium compound: ##STR1## wherein Z and Z.sub.1 each represents a group of nonmetallic atoms necessary to complete a 5- or 6-membered nitrogen-containing heterocyclic nucleus; R and R.sub.1 each represents an unsubstituted or substituted alkyl group, or an unsubstituted aryl group; Q and Q.sub.1 each represents a group of atoms necessary to complete a 4-thiazolidinone, 5-thiazolidinone or 4-imidazolidinone nucleus; L, L.sub.1 and L.sub.2 each represents an unsubstituted or substituted methine group; n.sub.1 and n.sub.

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: A silver halide color photographic photosensitive material which has been spectrally sensitized to light of wavelengths greater than of about 670 nm in which are highly sensitive to light of wavelength greater than about 670 nm and sufficiently insensitive to visible light having a shorter wavelength. The photosensitive materials comprises a silver halide photosensitive layer containing the yellow coupler, a silver halide photosensitive layer containing a magenta coupler, a silver halide photosensitive layer containing a cyan coupler and at least one non-photosensitive hydrophilic layer. Each of the photosensitive layers are spectrally sensitized such that they have different peak spectral sensitivities at light wavelengths greater than about 670 nm.

Abstract: A silver halide photographic material comprising a support having provided thereon a silver halide emulsion layer, in which said silver halide emulsion layer contains at least one sensitizing dye selected from the group consisting of a compound represented by formula (I): ##STR1## and a compound represented by formula (II): ##STR2## and at least one of said silver halide emulsion layer and other hydrophilic colloidal layers contains a dye represented by formula (III): ##STR3## wherein the substituents of the formulas (I), (II) and (III) are as described in the specification. The photographic material exhibits excellent performance properties in terms of sensitivity to light emitted from an Hc-Ne laser or an LED, safety from safelight, and freedom from color remaining after processing.