Abstract: A silver halide emulsion containing at least one member of methine dyes represented by the following general formula (I): ##STR1## wherein MET represents an atomic group having a methine dye structure; Q represents a bivalent bonding group comprising at least one atom of carbon atom, nitrogen atom, sulfur atom and oxygen atom or an atomic group having at least one atom of carbon atom, nitrogen atom, sulfur atom and oxygen atom; Ar represents a group which has an aromatic character and derives from a polycyclic compound composed of 8 or more atoms excluding nitrogen atom; l.sub.1 represents 1 or 2; l.sub.2 represents 0 or 1; and l.sub.3 represents 1, 2, 3 or 4.

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: The synthesis and the application of new dyes is described, said new dyes being incorporated in non-migratory state in hydrophilic colloid layers of photographic materials wherefrom they can be rapidly removed after being quickly decolourized in alkaline aqueous liquids used in the processing of said materials. The filter dyes have an ester function or a derivative therefrom as a substituent at the mono- or trimethine chain.

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: A novel silver halide photographic material is disclosed, which comprises at least one methine dye represented by the following formula (I): ##STR1## wherein R.sup.1 represents an alkyl, aryl or heterocyclic group; R.sup.2 and R.sup.3 each represents an alkyl group; R.sup.4 and R.sup.5 each independently represents an alkyl group, an alkoxy group, an aryloxy group, a hydrogen atom, a halogen atom, or a hydroxyl group, provided that at least one of R.sup.4 and R.sup.5 represents an alkyl, alkoxy, or aryloxy group; V.sup.1 and V.sup.2 each independently represents a hydrogen atom, a halogen atom, or an atomic group; L.sup.1, L.sup.2, and L.sup.3 each represents a methine group; M represents a charge neutralizing ion; and m represents 0 or a higher number required for the neutralization of electric charge in the dye.

Abstract: There is disclosed a silver halide photographic light-sensitive material which has a high sensitivity and is less susceptible to an increase in fog and fluctuation of sensitivity during storage at a high temperature and/or a high humidity. The light-sensitive material contains at least one methine compound represented by Formula (I): ##STR1## wherein R.sub.1 represents an alkyl group; R.sub.2 represents an alkyl group, an aryl group or a heterocyclic group; L.sub.1, L.sub.2, L.sub.3 and L.sub.4 each represents a methine group; Z.sub.1 represents a group of atoms necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring; n.sub.1 represents 0 or 1; n.sub.2 represents 0 or an integer of 1 to 4; n.sub.3 represents an integer of 1 to 10; D represents a group of atoms necessary to form an acidic nucleus; M.sub.1 represents a charge-neutralizing ion; and m.sub.1 represents a number of 0 or more which is necessary to neutralize a charge contained in the compound.

Abstract: A method for forming an image is disclosed, comprising imagewise exposing a negatively working silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer with light having a wavelength of from 460 to 600 nm and containing substantially no light having a wavelength of 360 nm or less, said emulsion layer containing at least one sensitizing dye having an absorption maximum (.lambda..sub.max) at a wavelength of form 450 nm to 580 nm, and said emulsion layer or other hydrophilic colloidal layer containing at least one hydrazine derivative. The method provides an image having excellent image quality either in enlargement or reduction work without causing reduction in sensitivity or inducing black pepper.

Abstract: A high resolution radiography system is presented utilizing a an intensifying screen incorporating a UV emitting phosphor. The photographic element exhibits enhanced sensitivity to the emission of the phosphor and further comprises at least one compound selected from the group comprising: ##STR1## wherein R.sub.1 =substituted or unsubstituted aromatic ring; R.sub.2 =H, substituted or unsubstituted alkyl or substituted or unsubstituted aryl; R.sub.3 =an alkyl group, an aryl group, a COOR group wherein R is hydrogen, alkyl, aryl or an alkali metal cation, HNR4+ wherein R.sub.4 is alkyl, substituted alkyl or alkyaryl.

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: A special group of zeromethine dyess which are desensitizers for sherical grain emulsions but which J-aggregate on tabular grains is described. Tabular emulsions containing these dyes are particularly useful as X-ray elements since the maximum emission peak of the dyes present therein closely matches the ouput of intensifying screens used therewith.

Abstract: Zeromethine blue spectral sensitizing dyes have found utility in emulsions made without tabular grains. These emulsions are particularly useful for exposure to a light source rich in blue emission and are especially useful in radiographic elements designed for exposure to intensifying screens having such emission.

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: Dyes are described having the formula: ##STR1## n is 0, 1, or 2, m is 0 or 1,R.sub.1 and R.sub.2 are each independently substituted or unsubstituted alkyl or aryl,R.sub.3 and R.sub.4 are each independently substituted or unsubstituted alkyl or aryl, or together with the nitrogen to which they are attached, form a substituted or unsubstituted heterocyclic ring,R.sub.5 is H, lower alkyl, or substituted or unsubstituted or aryl when n is 1, and H when n is 2,Z represents the atoms necessary to complete a substituted or unsubstituted 5- or 6-membered heterocyclic ring,Y represents S or N-R.sub.6 wherein R.sub.6 is substituted or unsubstituted alkyl or aryl, andX is a counterion as needed to balance the charge of the molecule.the dyes are useful as sensitizing dyes for photographic materials.

Abstract: Sensitizing dyes for photographic materials are disclosed. The dyes have the formula: ##STR1## R.sub.2 is substituted or unsubstituted alkyl or substituted or unsubstituted aryl, andR.sub.1 and R.sub.3 are each independently substituted or unsubstituted alkyl, at least one of R.sub.1 and R.sub.3 having at least about 5 carbon atoms.

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 presensitized plate from which a lithographic printing plate is to be prepared, comprising a support having provided thereon a non-silver light-sensitive layer comprising an O-quinonediazide compound and a silver halide light-sensitive layer in this order, said silver halide light-sensitive layer containing a specific sensitizing dye. The presensitized plate is specifically high in sensitivity to a light of the wavelength in the range of 480 nm to 520 nm, and therefore it can be handled even under the lighter safe light.

Abstract: A silver halide photographic emulsion containing at least one compound represented by following formula (I):Dye--L--Hyd (I)wherein Dye represents a chromophore-containing dye residue shown by following formula (II); Hyd represents a hydrazine residue one of the two nitrogen atoms of which is substituted by a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, or an alkilydene group and L represents a divalent linkage group of bonding Dye and Hyd; ##STR1## wherein R and R.sub.1, which may be the same or different, each represents an alkyl group; Z and Z.sub.1, which may be the same or different, each represents an atomic group necessary for forming a 5- or 6-membered heterocyclic ring; Q represents an atomic group necessary for forming a 5- or 6-membered carbon ring or a 5- or 6-membered heterocyclic ring; A represents an oxygen atom or a sulfur atom; and n, d, and m each represents 0 or 1.

Abstract: A silver halide photographic light-sensitive material comprising a support having at least one hydrophilic colloidal layer having spectrally sensitized silver halide grains. There are particular sensitizers which are used and the colloidal layer contains gelatin which has a saturated solubility of not more than ten in an amount of at least 35% by weight.

Abstract: Dyes according to the formula: ##STR1## are useful as filter dyes in photographic elements. In this formula, n is 1 or 2. R.sub.1 and R.sub.2 are each independently substituted or unsubstituted alkyl or substituted or unbsubstituted aryl, or together represent the atoms necessary to complete a substituted or unsubstituted 5- or 6-membered ring. Also, if R.sub.7 is substituted or unsubstituted alkyl, R.sub.1 is H.R.sub.3 is substituted or unsubstituted alkyl or aryl. R.sub.4 and R.sub.5 each independently represents H, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, secondary or tertiary amino, CO.sub.2 H, or NHSO.sub.2 R.sub.6, with the proviso that at least one of R.sub.4, R.sub.5, or a substituent on an aryl ring in R.sub.3, on an aryl ring in R.sub.4 or R.sub.5, on an aryl ring in R.sub.1 or R.sub.2, or on an aryl ring formed by R.sub.1 and R.sub.2 is CO.sub.2 H or NHSO.sub.2 R.sub.6. R.sub.6 is substituted or unsubstituted alkyl or substituted or unsubstituted aryl. R.sub.

Abstract: High contrast negative acting silver halide emulsions suitable for laser scanning applications comprising a Group VIII metal compound and one or more spectrally sensitizing dyes of the formula ##STR1## The emulsions have good long term stability and good sensitivity.

Abstract: Polymethine dyes are disclosed containing an acidic electron accepting terminal nucleus comprised of an isocyano group. The dyes are useful as spectral sensitizers in ultravioilet responsive imaging compositions.

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: Polymethine dyes and ultraviolet absorbers are disclosed containing a basic electron donating terminal nucleus and an acidic electron accepting terminal nucleus satisfying the formula: ##STR1## where Ar is independently in each occurrence an aromatic group andD is an oxy or amino group.These polymethines are useful in imaging materials.

Abstract: Polymethine dyes and ultraviolet absorbers are disclosed containing a basic electron donating terminal nucleus and an acidic electron accepting terminal nucleus comprised of a triarylborylisocyano group. The dyes are useful in imaging materials.

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

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

Abstract: The present invention provides a novel silver chlorobromide emulsion which is substantially free from silver iodide and which contains silver halide crystal particles comprising cubic, rectangular parallelepiped or tetradecanedral first silver halide crystals having six (100) surfaces which may further comprise additional (110) surfaces, at least one of the six (100) surfaces being conjugated with second silver halide crystals having a halogen composition different from that of the (100) surfaces of the first silver halide crystals and mainly comprising (110) surfaces, the second silver halide crystals being conjugated over the one or more surfaces of the first silver halide crystals in the form of one or more projections.

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 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 photographic emulsion comprising silver halide, a spectral sensitizing dye, and rhodanine.

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 color photographic material having at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one blue-sensitive silver halide emulsion layer, characterized in that a blue-sensitive silver halide emulsion which is used in at least one of the blue-sensitive silver halide emulsion layer or layers contains silver halide grains of an average size of 0.4.mu. or less and at least one sensitizing dye represented by formula I or II: ##STR1## wherein Z.sup.1, Z.sup.2 and Z.sup.3 each represent an atomic group necessary for completing an oxazole, benzoxazole, naphthoxazole, thiazole, benzothiazole, naphthothiazole, imidazole, benzimidazole or naphthoimidazole ring; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represent a substituted or unsubstituted alkyl or aryl group; (X.sup.-) represents an acid anion; and n represents zero or 1.

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 photographic light-sensitive material is disclosed, comprising a monodisperse silver halide emulsion of 0.30 .mu.m or less in average silver halide grain size containing at least 75 mol % silver chloride and 2 mol % or less silver iodide, and having incorporated in said emulsion a dye represented by the formula (I) ##STR1## wherein Z represents atoms forming a thiazoline nucleus, a thiazole nucleus, or a benzothiazole nucleus,X represents an oxygen atom or a sulfur atom, andR.sub.1 and R.sub.2 each represents an unsubstituted or substituted aliphatic group or an unsubstituted or substituted aromatic group.

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 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 silver halide photographic material having on a support at least one hydrophilic colloid layer and at least one silver halide emulsion layer containing tabular silver halide grains having a grain diameter of at least 5 times the thickness of the grains and at least one compound represented by general formula (I) ##STR1## wherein R.sup.1 represents a methyl group and R.sup.2 represents an alkyl group, a substituted alkyl group, an aryl group, or a substituted aryl group.

Abstract: Photographic elements and assemblages are described which employ nondiffusible N',N'-diaromatic carbocyclic--or diaromatic heterocyclic--sulfonohydrazide compounds which are capable of releasing photographically useful groups in an imagewise manner as a function of silver halide development.

Abstract: A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support base having provided thereon a hydrophilic colloid layer and a silver halide emulsion layer. The silver halide emulsion layer contains tubular silver halide grains having a diameter at least 3 times their thickness and also contains a compound represented by general formula (I) or (II): ##STR1## the substituents are defined within the specification. The material obtains the advantages of utilizing tabular silver halide grains while having a reduced dependents of its photographic properties on development processing conditions which normally effect materials containing tabular silver halide grains.

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: New dyes corresponding to the following general formula: ##STR1## wherein the substituents are as defined in the specification, are suitable for use in photographic recording materials.

Abstract: A silver halide color photographic emulsion is described, containing at least one sensitizing dye represented by formula (I) and at least one compound represented by formula (II). The use of compounds of formula (I) in combination with compounds of formula (II) permits the spectral sensitization of photographic emulsions without extending the wavelength region of spectral sensitivity, enabling the production of a light-sensitive material of high sensitivity and reduced fog. ##STR1## (The symbols V, W.sub.1, W.sub.2, R.sub.1, R.sub.2, R.sub.3, X, n, R.sub.5, Y, X.sub.1, m.sub.1 and m.sub.2 are as defined in the appended claims).

Abstract: A silver halide photographic light-sensitive material is described, comprising a support and at least one silver halide emulsion layer on the support, wherein the silver halide emulsion layer contains at least one specific type of sensitizing dye, at least one of the silver halide emulsion layer and other hydrophilic colloid layers contains at least one compound of four specific types of compounds and the silver halide grains contained in the silver halide emulsion are substantially tetradecahedral grains in which the proportion of (100) faces is at least 50%; this material is superior in both sensitivity and stain resistance.

Abstract: A silver halide photographic emulsion is disclosed which includes a sensitizing dye represented by general formula (I) and a compound represented by general formula (II): ##STR1## The substituents within the general formulae are defined within the specification. The emulsion can be used to prepare a photographic material which has high green-sensitivity which is obtained without expanding the wavelength region of spectral sensitivity in the green sensitive region. Further, the resulting material has these improved results and does not show substantial change of its photographic properties such as sensitivity and amount of fogging during storage.

Abstract: A light-sensitive silver halide photographic material having at least one silver halide emulsion layer on a support, characterized in that the said silver halide comprises silver halide grains containing at least 80 molar % of silver chloride and at least one of merocyanine dyes having the formula ##STR1## wherein R.sub.1 and R.sub.2 individually represent an alkyl group, an alkenyl group or an aryl group provided that at least one of R.sub.1 and R.sub.2 is an alkyl or aryl group having a sulfo group; R.sub.3, R.sub.4, R.sub.5 and R.sub.6 individually represent a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group or a phenyl group and any one pair of R.sub.3 and R.sub.4, R.sub.5 and R.sub.6, R.sub.1 and R.sub.6 or R.sub.4 and R.sub.5 may joint each other to form a ring; X is an oxygen atom, a sulfur atom or a selenium atom; and Y is an oxygen atom, a sulfur atom or a selenium atom provided that at least one of X and Y represents a selenium atom.

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: 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: There is disclosed a light-sensitive silver halide color photographic material having a silver halide emulsion layer containing at least one layer of a negative working silver halide on a support, comprising the negative working silver halide comprises at least 80 mole % of silver chloride, and being color sensitized with at least one kind of sensitizing dyes having the local maximum value of spectral sensitivity in the wavelength region from 445 nm to 490 nm and at least one kind of sensitizing dyes having the local maximum value of spectral sensitivity in the wavelength region from 420 nm to less than 445 nm.The photographic material according to this invention exhibits excellent color reproducibility and quick process suitability.