Abstract: A dual-coated radiographic element capable of producing a viewable image when heated following imagewise exposure is disclosed comprised of, on opposite sides of a transparent film, layer units containing radiation-sensitive radiation-sensitive silver halide grains, a light-insensitive source of silver, and a reducing agent for said light-insensitive reducible source of silver. Greater than 50 percent of total projected area of said silver halide grains being provided by tabular grains (a) having {100} major faces, (b) containing greater than 70 mole percent chloride, based on silver, (c) exhibiting an average thickness of less than 0.3 .mu.m, and (d) exhibiting an average equivalent circular diameter of greater than 0.6 .mu.m.

Abstract: A silver halide color photographic material is disclosed which contains at least one 1H-pyrrolo?1,2-c!?1,2,3!triazole based dye-forming coupler represented by the following formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 each represents a hydrogen atom or a substituent; and X represents a hydrogen atom or a group capable of being released upon reaction with the oxidation product of a color developing agent.

Abstract: There is disclosed a silver halide color photographic light-sensitive material having at least one photographic constitutional layer coated on a support, wherein at least one of the photographic constitutional layers contains at least one reducing agent for color formation represented by formula (I), at least one coupler for forming a diffusive dye, and at least one mordant. The material is capable of reducing the amount of developer and to be replenished or discharged after processing, and of reducing the occurrence of stain after development during storage of the material. There is also disclosed an image-forming method using the material. ##STR1## wherein C.alpha. represents a carbon atom; Z represents a carbamoyl, acyl, alkoxycarbonyl, or aryloxycarbonyl group; and Q represents a group of atoms to form, together with C.alpha., an unsaturated ring.

Abstract: A silver halide color photographic material is described, containing a 1H-pyrazolo?5,1-c!-1,2,4-triazole magenta coupler represented by formula (I) ##STR1## wherein R.sub.1 and R.sub.4 each represent a substituent; R.sub.2 and R.sub.3 each represent a hydrogen atom, an alkyl group, an aryl group, a hydroxyl group or an alkyl group substituted with at least one hydroxyl group; R.sub.9 represents a hydrogen atom, an alkyl group, an aryl group, an acyl group or a sulfonyl group; L represents --SO.sub.2 --, --CO--, --SO.sub.2 NR.sub.10 --, --CONR.sub.10 -- or --COO--; R.sub.10 represents a hydrogen atom, an alkyl group or an aryl group; A.sub.1, A.sub.2, and A.sub.3 each represent --O--, --NR.sub.5 --, --NR.sub.5 CO--, --CONR.sub.5 --, --NR.sub.5 SO.sub.2 --, --SO.sub.2 NR.sub.5 --, --COO--, --OCO--, --NR.sub.5 CONR.sub.5 --, --OCONR.sub.5 -- or --NHCOO--; R.sub.5 represents a hydrogen atom, an alkyl group, an aryl group or an alkyl group substituted with at least one hydroxyl group; B.sub.1, B.sub.2, and B.sub.

Abstract: The invention provides a photographic element comprising a silver halide emulsion layer having associated therewith a yellow dye-forming coupler having the formula: ##STR1## wherein X, Y, Z, W are independently selected from the group consisting of H, alkyl, aryl, halogen, alkoxy and aryloxy groups, provided that X and W may join to form a saturated ring;Each A is selected from the group consisting of halogen, alkoxy and aryloxy groups;m is an integer from 1 to 3;each B is independently selected from the group consisting of --C(O)OR.sub.2 and --NHSO.sub.2 R.sub.3 wherein R.sub.2 and R.sub.3 are independently selected from the group consisting of alkyl and aryl groups;n is an integer from 1 to 3; andR.sub.1 is a substituent group.

Abstract: A silver halide color photographic material having on a support at least one light-sensitive silver halide emulsion layer, wherein the color photographic material contains a nondiffusing coupler represented by formula (I):Cp-O--C(.dbd.O)--N(R.sub.1)--Ar--X (I)wherein Cp represents a coupler residue capable of releasing --O--C(.dbd.O)--N(R.sub.1)--Ar--X by causing a coupling reaction with an oxidized color developing agent; Ar represents an arylene group; X represents an amino group, an alkoxy group, or a hydroxy group; and R.sub.1 represents a hydrogen atom or a substituent, and a method for processing the photographic material which comprises exposing, developing and bleaching the photographic material, wherein the replenishing amount for the developer is not more than 600 ml per square meter of the photographic material.

Abstract: A color image formation method excellent in discrimination and color image stability after processing which comprises overlaying a heat developable color light-sensitive material with a complexing agent sheet in the presence of a small amount of water therebetween after or during imagewise exposure, said light-sensitive material comprising a support having provided thereon at least a light-sensitive silver halide, a binder, a coupler, a reducing agent and a slightly-water-soluble basic metal compound, said sheet comprising a support having provided thereon at least a compound forming a complex with a metal ion constituting said basic metal compound; and heat developing the light-sensitive material to obtain a color image thereon, wherein the silver chloride content of said silver halide is 80 mol % or more, said complexing agent sheet comprises a physical development nucleus and a solvent for a silver halide, and said reducing agent is at least one compound of specified phenols, hydrazines and hydrazones.

Abstract: A compound represented by the following general formula (I) is added to at least one layer of a silver halide photographic photosensitive material, thereby improving sharpness and graininess or decreasing a variation in photographic performance during storage after photography and before development: ##STR1## where A represents a coupler moiety, each of R.sup.1 and R.sup.2 independently represents a hydrogen atom or a substituent, each of R.sup.3 and R.sup.4 independently represents a hydrogen atom or an alkyl group, INH represents a group having a development inhibiting function, and R.sup.5 represents a nonsubstituted phenyl group, a nonsubstituted primary alkyl group, or a primary alkyl group substituted with a group other than an aryl group, at least one of R.sup.1 to R.sup.4 being a substituent other than a hydrogen atom, and an --OC(.dbd.O)-- group combining with one of two nitrogen atoms forming a pyrazole ring.

Abstract: The invention provides a photographic element which comprises a light-sensitive silver halide emulsion layer having associated therewith a cyan dye-forming coupler having the formula: ##STR1## wherein: each R.sub.1 independently represents an alkyl or aryl group;R.sub.2 represents a linear or branched alkyl group of 1 to 20 carbon atoms;R.sub.3 is selected from the group consisting of an alkyl group, an aryl group, a perfluoroalkyl group, or an arylamino group; andZ represents a hydrogen atom or a group capable of being split off by oxidized color developer.The element of the invention exhibits improved cyan dye light stability.

Abstract: The invention relates to a photographic emulsion comprising silver iodochloride grains, said grains further comprising osmium and ruthenium, said grains chemically sensitized with gold in an amount of between 0.1 and 120 mg gold per silver mole and sulfur in an amount between 0.1 and 20 mg sulfur per silver mole and a disulfide compound represented by the following formula: ##STR1## wherein X is independently --O--, --NH-- or --NR--, where R is a substituent;m and r are independently 0, 1 or 2;M is --H or a cationic species;Ar is an aromatic group; andL is a linking group, where p is 0 or 1.

Abstract: A colour photographic silver halide material with at least two blue-sensitive, yellow-coupling silver halide emulsion layers of differing photographic sensitivity, at least two green-sensitive, magenta-coupling silver halide emulsions layers of differing photographic sensitivity and at least two red-sensitive, cyan-coupling silver halide emulsion layers of differing photographic sensitivity, at least one interlayer Z-1 below the lowermost red-sensitive silver halide emulsion layer and/or at least one interlayer Z-2 below the lowermost green-sensitive silver halide emulsion layer, in which material a coupler is additionally used in at least one silver halide emulsion layer, which coupler couples to yield a colour which is not complementary to the spectral sensitisation of the layer concerned, and Z-1 and/or Z-2 contain a silver halide emulsion which has tabular grains with an aspect ratio of >2, an average diameter of a sphere of equal volume of .gtoreq.0.3 .mu.

Abstract: A color photographic element which comprises a light sensitive silver halide emulsion layer containing a 5-carbamoyl-1,3-dihydroxybenzene compound having a ClogP of at least 4. The element provides a black and white image using conventional color negative processing.

Abstract: Novel bicyclic pyrazolo couplers containing a fully substituted carbon at the 6-position of the bicyclic structure and a ballast group of formula (I): ##STR1## are useful in photographic materials and processes. The couplers exhibit increased coupling activity, and provide formation of dyes having improved maximum magenta image dye density, contrast, and photographic speed when employed in color photographic materials and processes. The variables are defined more specifically in the specification.

Abstract: Provided is a color photographic material excellent in discrimination and color reproducibility, which has a support and at least a light-sensitive silver halide, a binder, a coupler and a coupling developing agent provided thereon, and at least three light-sensitive emulsion layers having spectral sensitivities in different wavelength regions, respectively, in which at least two different coupling development agents are contained in different light-sensitive emulsion layers.

Abstract: Coupler dispersions comprising an aqueous medium having dispersed therein an organic phase comprising (i) a primary photographic coupler comprising a first ballasting group containing at least 5 carbon atoms and (ii) an auxiliary photographic coupler comprising a second ballasting group, wherein the primary coupler and the auxiliary coupler are present in the dispersion at a weight ratio of from 4:1 to 99:1 and the auxiliary coupler differs from the primary coupler solely in that the second ballast group contains 2 or more additional carbon atoms and associated hydrogen atoms relative to the first ballasting group.

Abstract: A silver halide color photographic light-sensitive material is disclosed, comprising a support having thereon at least one photographic constituent layer, wherein any one of the photographic constituent layer contains at least one reducing agent for color formation represented by formula (I), at least one dye forming coupler and at least one water-insoluble polymer.

Abstract: A photographic silver halide color print material comprising a support and yellow, magenta and cyan dye image forming layer units comprising at least one silver halide emulsion layer and at least one dye image-forming coupler which material contains a total silver halide coating weight less than 150 mg/m.sup.2 (as silver) and wherein the grain size (average volume in cubic microns) of the emulsion(s) is less than 1.0 (.mu.m).sup.3 in the yellow image forming unit and less than 0.125 (.mu.m).sup.3 in the magenta image forming unit and wherein each layer unit of the material has a dye image-forming efficiency (E) under conditions of use of above 30 where: ##EQU1## wherein the emulsion(s) of the cyan dye image forming layer unit have a silver coating weight less than 50 mg/m.sup.2, and an average grain size less than 0.064 (.mu.m).sup.

Abstract: Spectral properties of dye images produced from low silver halide coverage materials are improved by using dyes which are formed in the magenta, yellow and cyan image dye-forming units. These dyes have certain spectral characteristics, as determined by their unwanted absorptions, in combination with certain silver halide emulsion grain characteristics in each emulsion layer. In particular, reduction of unwanted absorptions can be achieved either with couplers per se which meet these characteristics or by the use of certain high-boiling solvents in the coupler dispersions at preferred levels.

Abstract: A photographic material having at least one photosensitive silver halide emulsion layer and at least one non-photosensitive layer on a support, which material contains at least one compound of the formula (I) in at least one of the layers, ##STR1## in which R.sub.1 to R.sub.5, L, m and n have the meaning stated in the specification and PUG means a photographically active group, may be produced in thinner layers.

Abstract: Compounds of the formula I are suitable as release compounds for photographically useful groups (photographic units). On reacting with nucleophilic reagents, preferably with dinucleophiles, the photographically useful group is released. ##STR1## In formula I: PUG means a photographically useful group;A means a strong electron acceptor;V means a vinylene group or two or more successive vinylene groups, wherein the vinylene group or two successive vinylene groups may form part of an aromatic ring system;L means one or more timing groups;m means 0 (zero) 1 or 2;n means 0 (zero), 1 or 2;R.sup.1 means H or methyl;R.sup.2 means H, alkyl with 1-18 C atoms or aryl;R.sup.3, R.sup.4 mean H or an organic group,wherein R.sup.2 and R.sup.3 may also together mean the residue necessary to complete a ring.

Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the element further comprising a photographic coupler represented by the formulaCOUP--(T.sup.1).sub.b --T.sup.2 --(T.sup.3).sub.c --PUGwhereinthe substituents are as defined herein the specification.

Abstract: Provided is a silver halide photographic material excellent in discrimination, which comprises on a support at least one compound represented by formula (1): ##STR1## wherein R.sub.1 to R.sub.4 each represents a hydrogen atom or a substituent, with the proviso that the sum of the Hammett substituent constants .sigma..sub.p values of R.sub.1 to R.sub.4 is 0 or more; and R.sub.5 to R.sub.9 each represents a hydrogen atom or a substituent and at least one of R.sub.5 and R.sub.9 is a substituent, wherein R.sub.1 and R.sub.2, R.sub.5 and R.sub.6, R.sub.6 and R.sub.7, R.sub.7 and R.sub.8, or R.sub.8 and R.sub.9 may combine with each other to form a ring.

Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the element further comprising a photographic coupler represented by the formulaCOUP-(T.sup.1).sub.b -T.sup.2 -(T.sup.3).sub.c -PUGwherein the substituents are as defined herein the specification.

Abstract: This invention provides a color silver halide photographic element comprising a support having situated thereon a red light-sensitive, cyan dye-forming unit; a green light-sensitive, magenta dye-forming unit; and a blue light-sensitive, yellow dye-forming unit. The photographic element further comprising a first layer and a second layer, the second layer being a layer which provides a site of development for solution physical development.

Abstract: There is disclosed a silver halide color photographic light-sensitive material having at least one photographic constitutional layer on a support, wherein at least one reducing agent for color formation, which is a specific hydrazine compound, at least one dye-forming coupler, and at least one high-boiling-point organic solvent whose electron-donative parameter .DELTA..nu..sub.D at 25.degree. C. is 80 or more, are contained in at least one of said photographic constitutional layers. The above light-sensitive material enables low replenishment and reduced discharge of a color developer; can form colors favorably even when the coating film's pH is low; and is reduced in stain due to long-term storage of the light-sensitive material or stain after the processing of the light-sensitive material.

Abstract: This invention provides color silver halide photographic element comprising a red light-sensitive, cyan dye-forming unit comprising a photosensitive silver halide emulsion layer and an image dye-forming coupler; a green light-sensitive, magenta dye-forming unit comprising a photosensitive silver halide emulsion layer and an image dye-forming coupler; and a blue light-sensitive, yellow dye-forming unit comprising a photosensitive silver halide emulsion layer and an image dye-forming coupler; the photographic element further comprising a first layer and a second layer, the second layer being a layer which provides a site of development for solution physical development; wherein at least one of the dye-forming units comprises two or more emulsion layers spectrally sensitized to the same region of the visible spectrum, but exhibiting different photographic sensitivities and wherein the first layer is positioned adjacent to the layer containing the slowest emulsion of said dye-forming unit and between the layer co

Abstract: The invention provides a photographic material comprising at least one light sensitive silver halide emulsion layer having associated therewith a yellow dye forming coupler having formula (I) or (II): ##STR1## wherein R represents an aromatic or heterocyclic group containing a group ionizable at pH 10 that is in conjugation with the double bond between the carbons to which A and X are respectively bonded through a .pi.-electron network;A is selected from the group consisting of hydrogen, a cyano group, an alkyl group, an aryl group, an alkylsulfonyl group, and an arylsulfonyl group;B is an alkyl group or an aryl group; andX represents hydrogen or a group capable of being split off upon coupling with oxidized color developer.

Abstract: A color photographic silver halide material which contains as photosensitive layers on a support at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, in which, above a photosensitive layer (seen from the support outwards), at least one further layer is provided which contains a colorless compound or combination of colorless compounds, which under processing conditions after exposure gives rise to a uniform, slight color density of a predetermined color and predetermined density over the entire surface, allows correction of the print densities without sensitivity being reduced.

Abstract: A color negative film which contains support, at least one light-sensitive silver halide emulsion layer containing a color coupler and at least one light-insensitive layer adjacent thereto which contains a compound which reacts with the developer oxidation product during development with the splitting off of a radical which increases the sensitivity and which corresponds to formulas I or IIA-B-(T.sub.1).sub.m -(COUP-D)-(T.sub.2).sub.n (I)A-B-(T.sub.1).sub.m D (II).

Abstract: A silver halide color photographic light sensitive material is disclosed, comprising a support having thereon a red-sensitive layer, a green-sensitive layer and a yellow dye-forming blue-sensitive layer, wherein the photographic material satisfies a specified relation, which is concerned with latent image keeping thereof. Further, at least one light-sensitive layer of the photographic material comprises a silver halide emulsion layer containing internally reduction-sensitized silver halide grains.

Abstract: A photographic element containing a dye which when released from a coupler has a sufficiently low pKa, generally less than about 5, such that the dye remains substantially or fully ionized during coating of the film and in the produced film, results in an element containing a dye which has the desired hue without the use of additional additives, such as mordants, to keep the dye ionized. The dye is also useful in photographic elements without release from a coupler, for example, as a filter dye.

Abstract: Disclosed are a photographic yellow dye-forming coupler of formula (I) and a photographic material containing one or more such yellow couplers. ##STR1## wherein R.sub.1 represents an alkyl group, a cycloalkyl group, an aryl group, an alkylamino group, an anilino group, or a heterocyclic group; R.sub.2 represents a hydrogen atom, a halogen atom, an aliphatic-oxy group, an aryloxy group, an aliphatic group, or an amino group; R.sub.3 represents an alkenyl group; R.sub.4 represents a substituent; m represents an integer of from 0 to 3; and X represents a hydrogen atom, or a group capable of being split off from the formula by the coupling reaction with an oxidation product of an aromatic primary amine developing agent. The couplers have a high solubility in solvents, and emulsions containing the couplers can be stored in cool for a long period of time without worsening the coloring property of the couplers.

Abstract: An improved photographic element comprises a support bearing at least one silver halide emulsion layer having associated therewith a two-equivalent 5-pyrazolone magenta-dye-forming coupler. The coupler has a coupling-off group in the 4-position and an activity-modifying ballasting group in the 3-position. The ballasting group includes a hydrogen-bonding substituent and provides a unique combination of steric, hydrophobic and conformational properties which allows the coupling activity to be controlled.

Abstract: A process for forming a nanocrystalline dispersion of a photographically useful compound in a continuous phase comprising the steps of:providing a nanoamorphous dispersion of said photographically useful compound in said continuous phase, andannealing said nanoamorphous dispersion to transform the physical state of said chemical compound therein to a crystalline physical state and to thereby obtain a nanocrystalline dispersion is disclosed.

Abstract: There is described a photographic system wherein development of an exposed photosensitive element is carried out in the presence of an acylpyridine-N-oxide compound.

Abstract: A silver halide color photographic light-sensitive material is disclosed which comprises a support having thereon, in any order, at least one yellow generating light-sensitive silver halide emulsion layer, at least one magenta generating light-sensitive silver halide emulsion layer, and at least one cyan generating light-sensitive silver halide emulsion layer, wherein at least one of the magenta generating light-sensitive silver halide emulsion layer contains at least one dye-forming coupler represented by a specific formula (M-I), and at least one of the yellow generating light-sensitive silver halide emulsion layer contains at least one dye-forming coupler represented by a specific forrmula (Y-I). This material can be used, for example, as a material suitable for quick developing material.

Abstract: A silver halide color photographic light-sensitive material comprising a support having provided thereon photographic constituent layers comprising at least a yellow dye-forming silver halide emulsion layer, a magenta dye-forming silver halide emulsion layer and a cyan dye-forming silver halide emulsion layer. The total silver coverage in said silver halide emulsion layers is 0.6 g/m.sup.2 or less. The magenta dye-forming silver halide emulsion layer contains silver halide emulsion grains comprising silver chloride or silver chlorobromide substantially free of silver iodide having a silver chloride content of 90 mol % or more, at least one magenta dye-forming coupler represented by formula (M-I): ##STR1## and the total coating amount of oil-soluble components contained in photographic constituent layers above the silver halide emulsion layer nearest to the support is 3.5 g/m.sup.2 or less.

Abstract: The invention relates to a photographic element comprising at least one emulsion layer comprising coupler and silver halide grains, adjacent to said at least one emulsion layer a color enhancer layer comprising the same coupler as in said at least one coupler layer and adjacent to said color enhancer layer a Dox scavenging layer.

Abstract: A color reversal photographic element having a light sensitive silver halide emulsion layer, and a second layer containing a light insensitive silver halide emulsion. The element additionally has a bleach accelerating releasing compound in the second layer or in a layer associated therewith. A method of processing such elements is also provided.

Abstract: Disclosed is a silver halide color photographic light-sensitive material which contains an emulsion in which the silver iodide surface content of the silver halide grains is less than the average silver iodide content of the grains. The material also contains a compound capable of releasing two photographically useful groups through at least one timing group and/or a compound capable of releasing a photographically useful group through two timing groups.

Abstract: A silver halide color photographic material having excellent color absorption characteristics and good yellow density is achieved by using a support having thereon at least one yellow coloring light-sensitive layer, at least one magenta coloring light-sensitive layer, and at least one cyan coloring light-sensitive layer, wherein the magenta coloring light-sensitive layer contains at least one dye-forming coupler represented by the following formula (M-I), at least one high boiling point organic solvent having a dielectric constant of 6.0 or less and a refractive index of 1.50 or less, and at least one benzotriazole ultraviolet absorber: ##STR1## wherein R.sub.1 represents a branched or aromatic group represented by the formulas (Q-1), (Q-2) or (Q-3); R.sub.2 and R.sub.3 each represents a substituent; n represents an integer of form 0 to 4, and when n is 2 or more, the plurality of R.sub.

Abstract: There is disclosed a silver halide color photographic light-sensitive material which excels in a color reproduction and a light fastness at a low density part through a high density part and which is improved in a Y-stain at a background part. The silver halide color photographic light-sensitive material comprises a support and provided thereon at least one photographic constitutional layer, wherein at least one layer of the above photographic constitutional layers contains at least one of the compounds represented by the following Formula (I) and a compound represented by the following Formula (II) in the same layer: ##STR1## wherein R represents a hydrogen atom or a substituent; Z.sub.a, Z.sub.b, and Z.sub.c each represent any group of methine, substituted methine, .dbd.N--, or --NH--; Y represents a hydrogen atom or a group capable of splitting off upon a coupling reaction with an oxidation product of a developing agent; provided that a dimer or a polymer may be formed via R, Y, or Z.sub.a, Z.sub.b or Z.

Abstract: A silver halide color photographic light-sensitive material comprises a green-sensitive silver halide emulsion layer containing a magenta coupler is disclosed. The magenta coupler is represented by a coupler of a formula: ##STR1## In the formulae R represents a primary alkyl group having 5 or more carbon atoms; X represents a hydrogen atom or a substituent which splits off upon reaction with the oxidation product of a color developing agent; Z represents a group of non-metal atoms necessary to form a nitrogen-containing heterocyclic ring; R.sub.21 represents an alkylene or alkenylene group having a primary carbon atom bound directly to Z; R.sub.22 represents an alkyl group.

Abstract: Photographic elements comprising certain 2-phenylcarbamoyl-1-naphthol image-modifying couplers exhibit proper hue, a resistance to dye crystallization, and a resistance to leuco cyan dye formation. Such couplers can be utilized for their image-modifying effect and can contribute substantially to the overall dye density of an image.

Abstract: A photographic element comprises at least three light sensitive silver halide layers spectrally sensitized to the same region of the electromagnetic spectrum wherein the least sensitive such layer, or a nonsensitive layer adjacent thereto, comprises a compound which contains a releasable thiol fragment or a precursor thereof wherein:A. the amount of the thiol-containing compound or precursor contained in such layers is both sufficient to increase the extent of silver bleaching during bleaching and is greater than the amount contained in any of the more sensitive layers of the same sensitivity; andB. the thiol fragment contains a sulfur atom which is not directly bonded to an aromatic atom and contains a water-solubilizing group.

Abstract: A silver halide color photographic material having on a support at least one light-sensitive silver halide emulsion layer, wherein the color photogrphic material contains a nondiffusing coupler represented by formula (I):Cp--(LINK).sub.n --N(R.sub.1)--Ar(OR.sub.2)--X (I)wherein Cp represents a coupler residue (residual group) which can undergo coupling reaction with the oxidation product of a color developing agent to release --(LINK).sub.n --N(R.sub.1)--Ar(OR.sub.2)--X; LINK represents a group which can release --N(R.sub.1)--Ar(OR.sub.2)--X after cleavage of bond to Cp; n represents 0 or an integar of 1 or 2, Ar represents an arylene group; X represents an amino group, an alkoxy group or a hydroxyl group; R.sub.1 represents a hydrogen atom or a substituent; and R.sub.

Abstract: The present invention provides a photographic element comprising a support, at least one photosensitive silver halide layer and in or adjacent said silver halide layer a colour coupler of one of the general formulas: ##STR1## wherein R.sup.1 is a subsituted or unsubstituted aryl or a subsituted or unsubstituted heterocylic group,R.sup.2 is a subsituted or unsubstituted, saturated or unsaturated, primary or secondary alkyl group in which the carbon atom which joins R.sup.2 to rest of the coupler has at least one fluorine atom attached to it,R.sup.3 is an electron-withdrawing group, andX is H or a coupling-off group,and wherein the electron-withdrawing properties of R.sup.1 are such that the dye formed on coupling with oxidised colour developing agent 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine has a .lambda..sub.max of from 537 to 570 nm.The invention also includes the coupler composition, methods of synthesizing the coupler and a method of forming an image in a photographic element.

Abstract: A silver halide photographic material comprising a support having provided thereon at least one layer, wherein said at least one layer contains at least one compound which is represented by the following formula (1) and is liquid at 25.degree. C.: ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents a hydrogen atom, an unsubstituted unsaturated straight-chain aliphatic group, or an unsubstituted branched alkyl group; provided that both R.sub.1 and R.sub.2 must not be hydrogen atoms and that the sum of the carbon atoms in R.sub.1 and R.sub.2 is 18 or more.

Abstract: The present invention is a process for continuous preparation of solutions of water-immiscible or water-insoluble organic compounds in substantially non-aqueous organic solvents. Particularly, a process for the continuous preparation of colour forming coupler solutions for use in the photographic industry is described. The process uses a twin screw extruder wherein the compound to be dissolved is introduced into a first section of the extruder. The compound passes along the extruder interior to a section where organic solvent is introduced to form the required solution.

Abstract: A photographic element comprising a support, at least one photosensitive silver halide layer and associated therewith a color coupler of the general formula (1) or (2): ##STR1## wherein A and B represent the same or different electron-withdrawing group,X is H or a group which splits off on coupling with oxidized color developer,R is an alkyl, cycloalkyl, aryl or heterocyclic which may be substituted, --COR.sup.1, --CSR.sup.1, SOR.sup.1, SO.sub.2 R.sup.1, --NHCOR.sup.1, --CONHR.sup.1, --COOR.sup.1, --COSR.sup.1, --NHSO.sub.2 R.sup.1 wherein R.sup.1 is an alkyl, cycloalkyl, or aryl group any of which are optionally substituted,and wherein two or more of A, B, R, and X optionally form part of a ring,Link is a linking group andn is 0, 1 or 2.