Abstract: A silver halide photographic light-sensitive material having high sensitivity and having a desired spectral sensitivity distribution. A silver halide photographic light-sensitive material comprising at least one multichromophore dye compound having at least two dye chromophores connected by covalent bonding or coordinate bonding, at least two of the dye chromophores forming a dye chromophore group and the light absorption of the dye chromophore group differing from the sum of individual light absorptions of respective dye chromophores constituting said dye chromophore group.

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 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 Silver halide photographic material high in sensitivity and decreased in residual color is disclosed, which comprises at least one compound represented by the following formula (I): wherein Z1 represents an oxygen atom, a sulfur atom, a selenium atom, a tellurium atom, a carbon atom or a nitrogen atom; Q represents a group necessary for forming a methine dye; M1 represents a charge equilibrium counter ion; m1 represents the number necessary for neutralizing a charge of the molecule; Vp represents a group having a log P value lower than that of Cl; q1 represents 1, 2, 3 or 4; and R1 is represented by following: R1=(La)k1CONHSO2R11, R1=(Lb)k2SO2NHCOR12, R1=(Lc)k3CONHCOR13, R1=(Ld)k4SO2NHSO2R14 wherein R11, R12, R13 and R14 each represents an alkyl group, an aryl group, a heterocyclic group, an alkoxyl group, an aryloxy group, a heterocyclyloxy group or an amino group; La, Lb, Lc and Ld each represents a methylene group; and k1, k2, k3 a nd k4 each represents a

Abstract: A silver halide photographic emulsion is disclosed, which comprises at least one dye or sensitizing dye having at least one organic counter ion; and also a silver halide photographic emulsion layer containing the above dye or sensitizing dye and a method of producing the above silver halide photographic emulsion are 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: 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: A photographic element comprising at least one silver halide emulsion layer in which the silver halide is sensitized with a compound of the formula: wherein A is a silver halide adsorptive group that contains at least one atom of N, S, Se, or Te that promotes adsorption to silver halide, and Z is a light absorbing group including for example cyanine dyes, complex cyanine dyes, merocyanine dyes, complex merocyanine dyes, homopolar cyanine dyes, styryl dyes, oxonol dyes, hemioxonol dyes, and hemicyanine dyes, and XY is an 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; and 2) the oxidized form of XY undergoes a bond cleavage reaction to give the radical X• and the leaving fragment Y. In a preferred embodiment of the invention, the radical X• has an oxidation potential ≦−0.7 V.

Abstract: A photographic element is disclosed comprising a film support, at least one light-sensitive layer, a highly loaded layer which contains more than 30 volume percent of non-film forming particulate material, and upper and lower aqueous coated adjacent layers which are next to the highly loaded layer, the upper adjacent layer being further from the support and the lower adjacent layer being closer to the support relative to the highly loaded layer, each adjacent layer having a film forming binder content of greater than 70 volume percent, and the lower adjacent layer being at least 1.0 micron thick.

Abstract: A silver halide photographic material is disclosed, which contains a connected-dye compound having a fixed configuration in which one cyanine dye plane is in parallel with and lies over the other so that the connected-dye compound always shows an absorption assignable to a cyanine dye aggregate thereof. The silver halide photographic material has excellent storage stability.

Abstract: A silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide hydrophilic colloid emulsion layer, at least one light-insensitive hydrophilic colloid layer interposed between the support and at least one silver halide emulsion layer, and at least one hydrazine derivative selected from the group consisting of compounds represented by the general formula (1) and (2) contained in the at least one of hydrophilic colloid layers provided in the same side of the support as that coated with the light-sensitive silver halide hydrophilic colloid emulsion layer: ##STR1## wherein their substituents are defined in the specification.

Abstract: A silver halide photographic light-sensitive material is disclosed. The material comprises a substrate provided thereon with at least one silver halide emulsion layer comprising at least one compound represented by the following Formula (I): ##STR1## wherein Ra and Rb each represents a hydrogen atom, an alkyl group having at least two carbon atoms or an aryl or heterocyclic group, provided that Ra and Rb do not simultaneously represent hydrogen atoms; La and Lb each represents a methylene group; L.sub.1 and L.sub.2 each represents a methine group; p.sub.1 represents 0 or 1; Z.sub.1 represents an atomic group required for forming a 5- or 6-membered nitrogen atom-containing heterocyclic ring; M.sub.1 represents a counterion required for balancing the electrical charge; m.sub.1 represents a numerical value of not less than 0 required for neutralizing the molecule; and Q represents a methine or polymethine group required for forming a methine dye.

Abstract: A silver halide photographic material having good spectral-sensitivity to laser rays, and which forms a high-sensitivity and high-contrast image by short-time exposure with high-intensity light. When processed with a reduced amount of replenisher, there is little fluctuation of photographic properties of the processed photographic material. The present invention relates to a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer comprising a silver halide emulsion containing silver halide grains having a silver chloride content of 50 mol % or less, wherein the silver halide emulsion is spectrally sensitized with a spectral sensitizing dye selected from the group consisting of compounds represented by formulae (I), (II) and (III) and the silver halide emulsion is chemically sensitized with a selenium compound and a gold compound: ##STR1## where the substituent groups for formulae (I) to (III) are defined in the specification.

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: 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 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: 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: 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: 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: Methine compounds of formulas (I), (II) and (III) are disclosed: ##STR1## wherein R.sub.3, R.sub.5 and R.sub.5a each represents an alkyl group, an aryl group, or a heterocyclic group, and the remaining symbols are defined in the specification. A silver halide light-sensitive material containing at least one of the methine compounds is also disclosed.

Abstract: Disclosed is a silver halide photographic material containing at least one dye of formula (Ia), (Ib), (Ic), or (Id): ##STR1## wherein R.sup.1, R.sup.2, R.sup.9 and R.sup.10 may be the same or different and each represents an alkyl group; Z.sup.1, Z.sup.2, Z.sup.3 and Z.sup.4 each represents a non-metallic atomic group necessary for forming a nitrogen-containing hetero ring; R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.11, R.sup.12, R.sup.13 and R.sup.14 may be the same or different and each represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group; R.sup.7, R.sup.8, R.sup.15 and R.sup.16 may be the same or different and each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an amino group or a hydroxyl group; R.sup.3 and R.sup.4, R.sup.5 and R.sup.6, R.sup.11 and R.sup.12, R.sup.13 and R.sup.14, R.sup.3 and R.sup.7, R.sup.5 and R.sup.8, R.sup.11 and R.sup.15, or R.sup.13 and R.sup.

Abstract: Disclosed is a high-sensitive and super-high contrast silver halide photographic material suitable to use in photomechanical process. The material comprises a support having thereon having at least one light-sensitive silver halide emulsion layer and another hydrophilic colloid layer, wherein at least one of the emulsion layer or the other hydrophilic colloid layer contains a hydrazine derivative and a redox compound capable of releasing a development inhibitor by oxidation and further contains at least one hardening agent represented by formula (A): ##STR1## wherein R represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted aryl group; and n represents 0 or 1.

Abstract: A photographic element is described with improved speed in the blue and ultra-violet region of the electromagnetic spectrum. The spectral response of the photographic element is enhanced with at least one dye represented by ##STR1## wherein A.sub.1 and A.sub.2 are hydrogen or taken together represent X--CH.dbd., wherein X is hydrogen, alkyl or substituted alkyl, substituted or unsubstituted five-member heterocyclic ring, substituted or unsubstituted six-member heterocyclic ring, aryl or an aryl substituted by at least one element chosen from the group consisting of alkyl, halogen, aryl, carbonyl, alkoxy, sulfonate, carboxy or triflouralkyl; Y is alkyl, aryl or COR wherein R is OH, NR.sup.2 or OM.sup.+, wherein R2 is hydrogen, alkyl, substituted alkyl, aryl or substituted aryl; wherein M+ is HNR.sup.3.sub.3.sup.+ or a metal cation, wherein R3 is hydrogen, alkyl or substituted alkyl, aryl or substituted aryl; Z is hydrogen, alkyl, substituted alkyl, aryl or substituted aryl.

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

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

Abstract: Method of forming a silver image by exposing a silver halide emulsion spectrally sensitized with a trinuclear merocyanine dye to light of 600-690 nm and wet-processing the emulsion with aqueous developing or activating solution and fixing solution, thereby dissolving away said dye from the resulting silver-image-containing material, said trinuclear merocyanine dye comprising at least 2 water-solubilizing groups.

Abstract: Dyes according to formulas (I), (II), (III), (IV), and (V) below are described. The dyes are useful as low-staining sensitizing dyes for photographic materials. ##STR1## Z.sub.1, Z.sub.2, Z.sub.3, R.sub.1, R.sub.2, L, D, G, X, n, P, and q are defined herein.

Abstract: A silver halide photographic material having a hydrophilic colloidal layer containing a dispersion of fine solid particles of a dye is disclosed, said dye being represented by formula (I): ##STR1## wherein L represents a nitrogen atom or a group composed of 1, 3, 5 or 7 substituted or unsubstituted methine group(s) connected via a conjugated double bond(s); E represents O, S, or N--R.sup.9 ; and R.sup.0 through R.sup.9 are as defined in the specification. The dye of formula (I) colors a specific hydrophilic colloidal layer without being diffused to other layers and is rapidly decolorized or washed off on development processing.

Abstract: A method of forming a direct positive image comprising:(a) imagewise exposing a direct positive silver halide photographic material composed of a support having thereon at least one light-sensitive silver halide emulsion layer containing non-prefogged internal latent image silver halide grains, at least one hydrophilic colloidal layer of the material containing a nucleating agent, and at least one sensitizing dye represented by formulae (I), (Ia), (Ia'), or (Ib): ##STR1## wherein Z and Z.sub.1 each represents a non-metallic atomic group necessary for forming a 5-membered or 6-membered nitrogen-containing heterocyclic ring; R and R.sub.1 each represents a substituted or unsubstituted alkyl group or an aryl group; Q and Q.sub.1 represent a non-metallic atomic group necessary for forming together a 4-thiazolidinone group, a 5-thiazolidinone group or a 4-imidazolidinone group; L, L.sub.1 and L.sub.2 each represents a methine group or a substituted methine group; n.sub.1 and n.sub.

Abstract: A direct positive color image forming method which comprises processing an imagewise exposed photographic light-sensitive material with a surface color developing solution containing an aromatic primary amine color developing agent, after fogging treatment and/or during fogging treatment, wherein the photographic light-sensitive material comprises a support having thereon at least one internal latent image type silver halide emulsion layer that has not been previously fogged, a color image forming coupler, colloidal silver, and at least one compound represented by general formula (II): ##STR1## wherein Z represents an atomic group necessary for completing a 5-membered or 6-membered nitrogen-containing heterocyclic ring; D and D', which may be the same or different, each individually represents an atomic group necessary for completing an acidic nucleus and D and D' may be bonded to each other to form a cyclic structure; R.sup.

Abstract: A light-sensitive material comprising a dye containing two or more cyclodextrin groups or derivatives thereof wherein the dye may serve as a spectral sensitizer and optionally, a compound which fluoresces light of a wavelength which can be absorbed by the dye.

Abstract: A photographic material having an excellent rapid processability, a high sensitivity and a less sensitivity variation due to a change of standing of the silver halide emulsion in the course of preparation of the light-sensitive material, and its preparation process are disclosed. The silver halide photographic light-sensitive material comprises a support bearing at least one silver halide emulsion layer thereon, and at least one silver halide emulsion layer contains highly chloride-containing silver halide grains having a silver chloride content of not less than 90 mol %, a water-soluble bromide of from 0.05 mol % to 2 mol % per mol of silver halide and a high boiling organic solvent having a dielectric constant of not higher than 6.0.

Abstract: A silver halide photographic light-sensitive material containing at least one methine dye which consists of an azulene nucleus, at least one of 10 carbon atoms of which is replaced by chalcogen atom(s) or nitrogen atom(s), and further whose 7-membered ring part is substituted with a methine bond having at the terminal an auxochrome which forms a conjugated resonance chromophore together with 10.pi. electron system of the nucleus is provided.Silver halide photographic light-sensitive materials of the invention are spectrally sensitized in long wavelength region, and have improved photographic performances such as sharpness and color resolution.

Abstract: A silver halide photographic emulsion comprising at least one spectral sensitizing dye having the following general formula (I):Dye--J.sup.1 --CONH--J.sup.2 --NHNHG--R (I)wherein Dye represents a dye residue capable of becoming a spectral sensitizing dye; J.sup.1 represents a substituted or unsubstituted alkylene group, a substituted or unsubstituted arylene group, a substituted or unsubstituted aralkylene group, or a substituted or unsubstituted alkarylene group; J.sup.2 represents a substituted or unsubstituted arylene group; R represents hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, or a substituted or unsubstituted aryloxy group; and G represents a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, or a substituted or unsubstituted iminomethylene group.

Abstract: A restraining method for restraining the formation of a re-reversal negative image is described, comprising incorporating a cyanine dye or a merocyanine dye which is electron donative and is adsorbable on silver halide in at least one hydrophilic colloid layer of an internal latent image type direct positive silver halide photographic material as a re-reversal restrainer.

Abstract: A photoresponsive material containing a dye compound having a cyclodextrin or its derivative as a substituent. The photoresponsive material exhibits increased light absorptivity by increasing the amount of spectral sensitizer, the dye compound. The photoresponsive material is useful as a photographic emulsion and the like.

Abstract: A new group of cyanine and merocyanine spectral sensitizing dyes based on derivatives of 3-indolizine carboxaldehyde is particularly useful in sensitizing a direct positive silver halide emulsion to orange and red.

Abstract: A photographic element comprising a support and at least one silver halide emulsion layer. The photographic element contains at least one layer containing at least one of the dyes represented by the following formula (I), (II), (III), (IV), (V), (VI), (VII) or (VIII): ##STR1## wherein Z.sub.1 to Z.sub.10 ; R.sub.1 to R.sub.24 ; L.sub.1 to L.sub.18 ; Y.sub.1 to Y.sub.8 ; Q.sub.1 to Q.sub.4 ; X.sub.1 to X.sub.3 ; Ar; h, m, p and r; and t.sub.1 to t.sub.3 are described in the specification.

Abstract: Compounds containing an aromatic ring portion fused with a tellurazolium or derivative tellurazole, tellurazoline (including tellurazolinylidene), or tellurazolinium ring portion are disclosed together with processes and intermediates for their preparation. With properly selected pendant groups these tellurazolium and derivative compounds can be usefully employed as dyes, antifoggants or stabilizers, nucleating agents, latent image keeping addenda, or speed or contrast altering addenda in silver halide photographic systems.

Abstract: There is disclosed a light-sensitive silver halide photographic material having a white pigment containing layer and at least one silver halide emulsion layer provided successively on a support, being characterized in that there is provided a colorant containing layer capable of being made substantially colorless by a photographic treatment between said support and said white pigment containing layer. The present invention provides a light-sensitive silver halide photographic material having a reflective support improved to a great extent in sharpness substantially without bringing about lowering in sensitivity.

Abstract: Many photographic materials must be handled under special lighting conditions in order to prevent exposure of the material. The use of large concentrations of bleachable light absorbing layers over the photosensitive emulsion tends to leave an undesirable residual stain. The inclusion of a specific class of low intensity reciprocity failure inducers to silver halide emulsions enables the emulsions and their photographic articles to be safely handled under white light conditions.

Abstract: Novel cyanine dye salts having an alkoxyaryl function joined by a vinylene linkage to a heterocyclic nucleus are useful as desensitizers in fogged, direct positive type of silver halide emulsions.

Abstract: Photo-sensitive silver halide compositions and elements are spectrally sensitized with new mathine dyes having a trialkylsilylalkyl group attached to a nitrogen atom in a heterocyclic nucleus of the dye.

Abstract: A silver halide photographic emulsion which comprises at least one compound represented by the formula (I): ##STR1## where Z represents an atomic group necessary to complete an oxazole nucleus, a benzoxazole nucleus or a naphthoxazole nucleus, R.sub.1 represents a substituted or unsubstituted alkyl group, R.sub.2 represents an alkoxycarbonylalkyl group, a hydroxyalkyl group, a hydroxyalkoxyalkyl group, a carbamoylalkyl group, a hydroxyphenyl group or a hydroxyalkylphenyl group, and R.sub.3 and R.sub.4 which may be the same or different each represents a hydrogen atom, an alkyl group, an alkoxy group, a chlorine atom or a carboxyl group, and a lithographic silver halide material containing the same.

Abstract: Light-sensitive silver halide photographic materials to be treated with a hydroquinones-containing developing solution which material comprises a support and at least one hydrophilic colloidal layer coated thereon which contains silver halide grains having an average grain size of 0.05 to 1.5.mu., a tetrazolium compound and a sensitizing dye.