Abstract: A silver halide light-sensitive material is disclosed, comprising a support having thereon at least one light-sensitive silver halide emulsion layer comprising silver halide grains and a binder, at least about 50 wt % of said silver halide grains comprising a silver halide grain matrix having thereon from about 10 to 10,000 protrusions per square micrometer of grain matrix surface, said individual protrusions having an average projected area diameter of up to about 0.15 .mu.m, and a halogen composition of said protrusions differing from that of the grain matrix; said silver halide emulsion being chemically sensitized with at least one compound selected from the group consisting of a sulfur compound, a selenium compound, a reducing compound and a noble metal compound; and said silver halide emulsion being spectrally sensitized with a methine dye.

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: Dyes of the formula ##STR1## wherein Y completes a benzothiazole or benzoselenazole nucleus, R.sub.1 is alkyl, R.sub.2 and R.sub.3 are hydrogen, alkyl or phenyl and Z is alkylene, are suitable for sensitizing fine grain silver halide emulsions.

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 silver halide color photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide emulsion layer contains a silver halide emulsion which is spectrally sensitized by adding a spectral sensitizing dye prior to the completion of formation of silver halide particles and at least one kind of pyrazoloazole type magenta coupler represented by the following general formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a substituent; X represents a hydrogen atom or a group capable of being released upon a coupling reaction with an oxidation product of an aromatic primary amine developing agent; Za, Zb and Zc each represents a methine group, a substituted methine group, .dbd.N-- or --NH--, one of the Za--Zb bond and the Zb--Zc bond being a double bond and the other being a single bond, and when the Zb--Zc bond is a carbon-carbon double bond, it may form a part of an aromatic ring; R.sup.

Abstract: A silver halide photographic light-sensitive material and high contrast negative image forming process using them are disclosed. The material comprises a support having thereon at least one silver halide emulsion layer in which said silver halide emulsion layer or other hydrophilic colloid layer contains at least one hydrazine derivative, at least one cationic dye selected from a cyanine dye, a hemicyanine dye and a rhodacyanine dye, and L-ascorbic acid, and has photographic characteristics of giving very high contrast of over 10 in .gamma., giving high practical Dmax and sensitivity, and causing less black peppers using a stable developer and having optimum spectral sensitivity for spectral energy distributions of various light sources.

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: Imaging systems employing photosensitive microcapsules having improved film speed are disclosed wherein the microcapsules contain a photosensitive composition in which the photoinitiator system includes a photobleachable sensitizer such as a 3-substituted coumarin compound; the invention is particularly useful in providing self-contained imaging systems which are sensitive at 390-500 nm but which can be photobleached to reduce background yellow; an imaging process including a photobleaching step following exposure and development is also disclosed.

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 process for forming an image is provided, comprising imagewise exposing a photosensitive material comprising on a support a photosensitive silver halide, a sensitizing dye having general formula (I) and/or (II), and a compound which forms or releases a mobile dye in proportion or counter-proportion to the reduction of the photosensitive silver halide into silver by heating, and transferring the resulting mobile dye to a dye-fixing element in the presence of a hydrophilic solvent,wherein formulas (I) and (II) are: ##STR1## wherein Z.sup.1 and Z.sup.2 represent a group of non-metallic atoms necessary to form a 5- or 6-membered heterocyclic ring; R.sup.1 and R.sup.2 represent a substituted or unsubstituted alkyl group; L.sup.1, L.sup.2, and L.sup.3 represent a substituted or unsubstituted methine group; p and q are equal to 0 or 1; m is equal to 0, 1, 2, or 3; X1.sup..crclbar. represents an anion; k is equal to 0 or 1, with the proviso that the number of organic acid groups contained in the molecule except X1.

Abstract: A heat developable light-sensitive material comprising a support having thereon (1) a light-sensitive silver halide emulsion, (2) at least one of a base and a base precursor, and (3) a binder, wherein the silver halide emulsion is one which is chemically sensitized in the presence of a sensitizing dye. With the heat developable light-sensitive material, decrease in sensitivity and formation of fog during preservation thereof are prevented.

Abstract: A heat-developable photographic material having improved preservability, which comprises a support having thereon at least one heat-developable photgraphic layer, said photographic material containing a dye represented by formula (I) ##STR1## wherein R.sub.1 and R.sub.3 each represents an unsubstituted or substituted alkyl group or alkenyl group;R.sub.2 represents a hydrogen atom or an unsubstituted or substituted alkyl group, aryl group, alkenyl group, or aromatic heterocyclic group;R.sub.4 through R.sub.7 each represents a hydrogen atom or an unsubstituted or substituted alkyl group, aryl group, or alkenyl group; or R.sub.4 and R.sub.6 together form an unsubstituted or substituted alkylene group or alkenylene group;X.sub.1 represents an oxygen atom, a sulfur atom, or the group ##STR2## wherein R.sub.8 represents a hydrogen atom, an unsubstituted or substituted alkyl group, aryl group, or alkenyl group;Y.sub.

Abstract: A heat developable light-sensitive material is described, comprising a dye represented by formula (I) or (II) as described in claim 1.

Abstract: A previously unfogged internal latent image-type direct positive silver halide emulsion and a photographic material incorporating such emulsion are described, wherein the emulsion contains at least one sensitizing dye represented by formula (I): ##STR1## wherein one of R.sup.1 and R.sup.2 represents a sulfoalkyl group and the other thereof represents an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group, or a pyridyl group; X represents a sulfur atom or an oxygen atom; Y represents a sulfur atom, an oxygen atom, or ##STR2## wherein R represents a lower alkyl group or --CH.sub.2).sub.n.sbsb.1 O--CH.sub.2).sub.n.sbsb.2 OH, wherein n.sub.1 and n.sub.2 each represents an integer of 1 to 4; and W represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, or an unsubstituted or substituted phenyl group.

Abstract: A silver halide photographic light-sensitive material which comprises a support, a hydrophilic colloid layer or layers and a silver halide emulsion layer or layers, wherein at least one of said silver halide emulsion layers contains tabular silver halide grains having a diameter:thickness ratio of 5:1 or more and at least one compound represented by the following general formula (I) or general formula (II): ##STR1## wherein Z.sub.1 represents the non-metal atoms necessary to complete a 5- or 6-membered heterocyclic ring; R.sub.1 represents an unsubstituted or substituted alkyl group; R.sub.2 represents an unsubstituted or substituted aryl group with up to 2 aromatic fused rings, or an unsubstituted or substituted aralkyl group; R.sub.3 represents a hydrogen atom or with R.sub.1 an alkylene group forming a ring; R.sub.

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: Polymethine dyes are disclosed containing a tellurazolium nucleus which is substituted at its 2-position with methine chain which is in turn substituted at its .beta. position with a dye property modifier. These dyes can be used in photographic elements to facilitate image formation.

Abstract: Silver halide color light-sensitive materials which contain a compound having a repeating unit represented by general formula (I) and a compound represented by general formula (II): ##STR1## wherein R.sub.1 represents --OR, --SR or wherein R and R' each represents a hydrogen atom, or alkyl group, a hydroxyalkyl group, a sulfoalkyl group (or a salt thereof), a carboxyalkyl group (for a salt thereof), an aralkyl group, an aryl group, or a cycloalkyl group, or R and R' may form an alkylene group or an --O-- containing alkylene ring together; R.sub.2, R.sub.3, R.sub.4 and R.sub.5 each represents a hydrogen atom or an alkyl group; Y.sub.1, Y.sub.2, Y.sub.3 and Y.sub.4 each represents a polymethylene group, an arylene group, or a cycloalkylene group, Z represents --O--, --SO.sub.2 -- or --CH.sub.2 --; and l and m each represents 0 or 1; ##STR2## wherein R.sub.6 represents a hydrogen atom, an alkyl group; R.sub.7 and R.sub.

Abstract: An optical recording member having an organic coating film comprising a compound of the general formula: ##STR1## wherein; Z.sub.1 is an atomic group necessary to form a substituted or unsubstituted nitrogen-containing heterocyclic compound ring; Z.sub.2 is an atomic group necessary to form a substituted or unsubstituted pyrane, thiapyrane, selenapyrane, benzopyrane, benzothiapyrane, benzoselenapyrane, naphthopyrane, naphathiopyrane, or naphthoselenapyrane ring; X is a sulfur, oxygen, or selenium; Z.sub.3 is a divalent hydrocarbon residue necessary to form a 5- or 6-membered ring substituted or unsubstituted; R.sub.11 is a hydrogen atom or substituted or unsubstituted alkyl; R.sub.12 and R.sub.13 each are a hydrogen atom, halogen atom, alkyl, alkoxy, aryl, substituted aryl, styryl, substituted styryl, or substituted or unsubstituted heterocyclic residue; R.sub.14 is a hydrogen or halogen atom; A.sup..crclbar. is an anion; m and n each are 0 or 1; and l is 0, 1, or 2.

Abstract: A silver halide color light sensitive material with a silver iodobromide photographic emulsion layer is described. The silver iodobromide photographic emulsion contains at least one compound represented by the general formula (I): ##STR1## and at least one compound represented by the general formula (II): ##STR2## (in the general formulae (I) and (II), all symbols are as defined in the appended claims). The surface of silver iodobromide grains of the surface low iodine content type in the photographic emulsion is adsorbed from 10.sup.-7 to 10.sup.-3 mol of iodide ion per mol of silver halide. The silver iodobromide emulsion is spectrally sensitized in a red region without causing any undesirable problems.

Abstract: A silver halide photographic emulsion is described containing in combination at least one sensitizing dye represented by formula (I) and at least one cyan coupler represented by formula (II): ##STR1## wherein all the symbols are defined in the specification. In a preferred embodiment, in addition to the sensitizing dye (I) and the cyan coupler (II), there may also be included at least one compound represented by formula (III) ##STR2## wherein all the symbols are also defined in the specification.

Abstract: High aspect ratio tabular grain direct reversal silver halide emulsions are disclosed. The emulsions can be incorporated in photographic elements, such as multicolor photographic elements. Image transfer film units incorporating these direct reversal emulsions are specifically disclosed.

Abstract: A light-sensitive printing plate precursor is disclosed. The printing plate precursor is comprised of an aluminum support base having provided on a grained and anodized surface. The surface is coated with a layer which is comprised of a positive working light-sensitive composition and an oxonol dye. The printing plate has high printing durability, high water retention ability and high color stain resistance. When used the plate precursor provides an image having high contrast. The plate precursor forms less color stain than conventional plates whether used with a fresh developing solution or a fatigued developing solution. The plate precursor does not result in causing uneven development when using manual development methods.

Abstract: A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support having thereon a red-sensitive silver halide photographic emulsion layer comprising a tetramethine melocyanine dye represented by the general formula (I) and a compound represented by the general formula (II) ##STR1## the substituents within these structural formulae are defined within the specification. The material gives improved results with respect to preventing diffuse sensitization. The material also provides a red-sensitive silver halide photographic emulsion in which a decline of spectro-sensitivity in the lapse of dissolution is relatively small and which has a small amount of dye fog.

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: A narrow range of dinuclear spectral sensitizing dyes can be used in photothermographic silver halide emulsions without adversely affecting fog and speed levels with concentration variations.

Abstract: Photographic silver halide compositions and elements are provided which are spectrally sensitized with new methine dyes. The dyes are prepared from new intermediate compounds which have an acetylenically unsaturated hydrocarbon chain terminated with a nucleophilic group, the acetylenically unsaturated hydrocarbon chain being bonded to a nitrogen atom in a heterocyclic ring system of the type used in cyanine dyes. The new intermediates also provide alternative synthetic routes to known dyes.

Abstract: New merocyanines which have at least one water-solubilizing group are useful in photographic materials in antihalation and filter layers.

Abstract: A direct positive silver halide photographic light-sensitive material is described, comprising a support having coated thereon a light-sensitive silver halide photographic emulsion layer and a hydrophilic colloid layer, at least one of said layers containing a compound represented by the formula (I): ##STR1## wherein R.sup.1 represents R.sup.6 or R.sup.6 CO--; and R.sup.6 represents an aliphatic group, an aromatic group, a heterocyclic aromatic group or hydrogen; R.sup.2 and R.sup.4, which may be the same or different, each represents an aliphatic group, an aromatic group, a heterocyclic aromatic group or a hydrogen atom; or R.sup.1 and R.sup.2 together can form a ring; R.sup.3 represents hydrogen or an aliphatic group; R.sup.5 represents Y or X--A--Y wherein X and Y, which may be the same or different, each represents a divalent aromatic group; and A represents a divalent group selected from --CONH--, --NHCONH--, --SO.sub.2 NH--, --B--CONH-- and --B--SO.sub.

Abstract: A photographic silver halide material is provided which comprises in at least one layer a solid dispersion of at least one water-insoluble methine dye of the formula ##STR1## wherein L and L' each represent an optionally substituted methine group, n is O, 1 or 2, Z represents the atoms necessary to complete an optionally substituted acidic carbocyclic or heterocyclic ring, Y represents the atoms necessary to complete an optionally substituted basic carbocyclic or heterocyclic ring, at least one of the rings Z and Y being substituted by a --COOH group or being substituted by a group which comprises a --COOH group. The solid dispersion of the dye is finely divided in the binder material of said layer, which is normally a filter or anti-halation layer. A marked increase of sharpness of the images obtained from photographic material containing in at least one layer the solid dyestuff dispersion can be observed.

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: A light-sensitive silver halide photographic material comprising a support having thereon a layer containing a compound represented by the formula (I): ##STR1## wherein R.sub.1 represents an aliphatic or aromatic residue; R.sub.2 represents a hydrogen atom, an aliphatic or an aromatic residue; and X.sub.1 and X.sub.2, which may be the same or different, each represents a divalent aromatic group; and a method of forming a direct positive image which comprises processing a light-sensitive silver halide photographic material having a support carrying thereon an internal latent image type silver halide emulsion layer in the presence of the compound represented by the said formula (I). The compound is particularly effective in combination with diffusible dye releasing (DRR) compounds having o-hydroxyarylsulfamoyl groups.

Abstract: A photographic product comprising, in a package, a light-sensitive silver halide photographic material having a silver halide emulsion layer coated on a support, characterized in that said silver halide emulsion layer contains a sensitizing or desensitizing dye and that the oxygen permeability of the package is below 5.times.10.sup.2 cc/m.sup.2. 24 hrs. atm. under a condition at 20.degree. C. and 0% of relative humidity and further that the sealed package is under a condition that a partial pressure of an oxygen-gas in the package is not more than 1/6 atmospheres at an initial stage.

Abstract: A direct positive light-sensitive silver halide photographic material comprising a support having thereon a layer containing a compound represented by the formula (I): ##STR1## wherein R.sub.1 represents an aliphatic residue or an aromatic residue; R.sub.2 represents a hydrogen atom, an aliphatic residue, or an aromatic residue; X.sub.1 and X.sub.2, which may be the same or different, each represents a divalent aromatic residue; and Y represents --R--, --O--R or --S--R-- wherein R represents a divalent aliphatic residue and the O or S is bonded to X.sub.1. The compound is particularly effective in combination with a diffusible dye releasing dye image providing compound having an o-hydroxyarylsulfamoyl group.

Abstract: A photodevelopable silver halide photosensitive material wherein a visible image is formed by a latent image-forming step in which high illumination exposure is effected for a short time and a subsequent light development step in which low illumination exposure is effected, which comprises at least one compound of the formula: ##STR1## wherein R.sub.1 is hydrogen, lower alkyl or a substituted or unsubstituted aryl group and salts thereof.

Abstract: A direct positive light-sensitive silver halide photographic material comprising a support having thereon a layer containing a compound represented by the formula (I): ##STR1## wherein R.sub.1 represents an aliphatic residue or an aromatic residue; R.sub.2 represents a hydrogen atom, an aliphatic residue, or an aromatic residue; X.sub.1 and X.sub.2, which may be the same or different, each represents a divalent aromatic residue; and Y represents ##STR2## or a direct bond wherein the O or S is bonded to X.sub.1 ; R represents a divalent aliphatic residue and R.sub.3 represents an aliphatic residue or an aromatic residue. The compound is particularly effective in combination with a diffusible dye releasing dye image providing compound having an o-hydroxyarylsulfamoyl group.

Abstract: A novel group of photographic sensitizing dyes is prepared by reacting the 5,7-dimethyl-1,2-benzoxathian-4-one-2,2-dioxide sultone nucleus with other organic compounds capable of forming merocyanine, oxonol or styryl dyes therewith. The resulting dyes are particularly useful in the sensitization of silver halide emulsions and provide excellent speed and low after-processing dye stain.

Abstract: A multipart photosensitive element having a predetermined saturation density including at least two partial record portions for forming a full record, each partial record portion controlling a preselected density range of the full record; all of the partial record portions combining to produce the predetermined saturation density of the full record; at least one of the partial record portions including a fixed contrast emulsion and at least one of the partial record portions including a variable contrast emulsion for varying the contrast of that partial record portion over its preselected density range, each of the variable contrast emulsions being photoresponsive in a different spectral region from the other variable contrast emulsions in the other partial record portions for independently selectively varying the contrast in each of the partial record portions including a variable contrast emulsion.

Abstract: A method of precipitating silver halide is disclosed in which a methine spectral sensitizing dye is introduced into the reaction vessel in which precipitation of silver halide is performed after nucleation of the silver halide grains has occurred and before completion of silver halide precipitation. The silver halide grains spectrally sensitized in this manner exhibit relatively high minus blue speeds.

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.

Abstract: A method of spectrally sensitizing a photographic light-sensitive emulsion where a water-soluble solution, prepared by dissolving a methine dye having at least one water-soluble group in water in the presence of a "Red Shift Compound", as hereinafter defined, is added to a photographic light-sensitive emulsion to provide a photographic light-sensitive emulsion spectrally sensitized with increased sensitizing efficiency and with reduced fog. The disadvantages caused by the use of high organic solvent contents are avoided and photographic light-sensitive emulsions suitable for high-speed coating are obtained.