Abstract: A silver halide photographic material containing a compound having a structure represented by formula (I) ##STR1## wherein EAG represents a group capable of accepting an electron from a reducing material; E represents an electron-attracting group; R.sup.3 represents an atomic group necessary for forming a 5-membered to 8-membered single ring or condensed ring by combining with the carbon atom carrying EAG and E; ETG represents an electron-transmitting group; n represents 0 or 1; R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom, a hydrocarbon group, a heterocyclic group, or a single bond for forming a ring with EAG; Time represents a group releasing PUG upon cleavage of the bond between the carbon atom carrying R.sup.1 and R.sup.2 and Time; t represents 0 or 1; and PUG represents a photographically useful group.

Abstract: A silver halide photographic material comprising a support having provided thereon at least two hydrophilic colloid layers, wherein at least one of the hydrophilic layers comprises water or a hydrophilic colloid and a compound represented by formula (I) dispersed therein using water or a water-soluble organic solvent:PWR-(Time).sub.t -PUG (I)wherein PWR represents a group capable of releasing (Time).sub.t -PUG upon reduction;Time represents a group capable of releasing the PUG residual group by the successive reaction, after being released as (Time).sub.t -PUG;t represents 0 or 1;PUG represents a photographically useful group; and at least one water-soluble group exists in one molecule of the compound.

Abstract: A hologram is directly recorded in a sensitized metal substrate. The hologram may be an amplitude hologram, or may be treated to produce a phase relief hologram which may be stamped into a plastic material for reproduction, be archivally stored, or used as a master for electroforming a second durable surface relief hologram for use as an embossing master. A suitable material is prepared from a polished silver plate exposed to halogen vapors. After exposure, the plate is developed and fixed, and the surface is differentially etched to form a surface relief suitable for hologram embossing. Daguerreotype processes are modified to make surface amplitude holograms and phase holograms. By etching through a metal film a semiconductor mask is obtained. By depositing a silver film directly on a wafer, masks are made with very high feature definition.

Abstract: A heat-developable color light-sensitive material comprising a support having thereon at least a light-sensitive silver halide, a binder, a dye providing compound capable of releasing or forming a diffusible dye in correspondence or counter-correspondence to a reaction in which silver halide is reduced to silver, a basic metal salt compound which is sparingly soluble in water, and at least one acid precursor compound represented by formula (I) or formula (II): ##STR1## wherein the total number of carbon atoms included in R.sup.1 and R.sup.2 is at least 10, and R.sup.1 and R.sup.2 each represents a group represented by formula (III) or formula (IV): ##STR2## wherein R.sup.11, R.sup.12, R.sup.13, R.sup.14, R.sup.15, R.sup.16, R.sup.17 and R.sup.18 each represents a substituent, provided that R.sup.1 and R.sup.2 are selected such that the sum of the aliphatic Taft's constants (.sigma.* value) of the substituents represented by formula (III), the Taft's constants (.sigma.-value) of R.sup.14 and R.sup.

Abstract: A heat developable color photographic material is disclosed, comprising a support having thereon at least a photosensitive silver halide, a binder, and a dye providing compound capable of releasing or forming a diffusible dye in correspondence or counter-correspondence to reduction of the silver halide to silver, said heat developable color photosensitive material further comprising a compound represented by formula (I):C.sub.6n (H.sub.2 O).sub.5n+1 (I)wherein n represents an integer of 1 or more. The material exhibits excellent raw preservability and provides a stain-free color image having a high maximum density.

Abstract: A novel color light-sensitive material is provided, which comprises a support having theron at least a light-sensitive silver halide, an image-forming coupler, and a compound represented by formula (I):PWR--Time).sub.t Z [I]wherein PWR represents a group which undergoes reduction to release --Time).sub.t Z; Time represents a group which releases Z through a reaction after being released as --Time).sub.t Z; t represents an integer of 0 or 1; and Z represents a group which becomes a slightly mobile dye or a precursor thereof after being released from --Time).sub.t Z.

Abstract: A color light-sensitive material comprising at least light-sensitive silver halide, a binder, a reducible dye providing compound and a reducing agent represented by the following formula (I). ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an acylamino group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an acyl group, a sulfonyl group, a carbamoyl group or a sulfamoyl group, or R.sup.1 and R.sup.2 may be combined together to form a carbon ring or a heterocyclic ring; R.sup.3 represents an alkylene group; R.sup.4, R.sup.5, R.sup.6 and R.sup.

Abstract: Photothermographic dry silver emulsions containing a benzylidene lenco dye and a development accelerator provide a high density yellow image upon exposure to actinic radiation and thermal developing at a relatively low temperature and for a short period of time.

Abstract: A color light sensitive material which provides a positive dye image having high density, good color reproducibility and which exhibits excellent preservability before use. The material comprises a support having provided thereon a light-sensitive silver halide, a binder, a reducible dye donating compound, and at least one reducing agent selected from the group consisting of a compound represented by formula (IA) and a compound represented by formula (IB): ##STR1## wherein the substituents have the meanings indicated in the specification.

Abstract: Photographic compound (A) capable of releasing a photographically useful group is represented by the formula: SOL-CAR-LINK-PUG wherein SOL is a water-solubilizing group; CAR is a carrier moiety that, upon reaction with oxidized developing agent, is capable of releasing LINK-PUG and capable of forming a compound that is washed out of the photographic element during photographic processing; LINK-PUG is in turn capable of releasing a photographically useful group (PUG) during photographic processing and LINK-PUG is represented by the formula: ##STR1## wherein X, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and PUG are as defined in the application. The photographic compound (A) enables formation of easily removable compounds in photographic elements and processes that provide images having improved acutance.

Abstract: A novel blocked photographically useful compound comprises a new blocking group that (a) comprises two electrophilic groups, the least electrophilic of which is bonded directly or through a timing group to the photographically useful group (PUG) of the compound, (b) is capable of reacting with a dinucleophile reagent, and (c) has the two electrophilic groups separated from each other by a bond or unsubstituted or substituted atom that enables nucleophilic displacement to occur with release of PUG when the compound is reacted with a dinucleophile reagent. Such a blocked photographically useful compound is useful in a photographic material and process to provide increased stability and enable more rapid release of the photographically useful group upon reaction with a dinucleophile reagent.

Abstract: A heat-developable color light sensitive material comprising a support having thereon at least a light-sensitive silver halide, a binder, a non-diffusible compound capable of releasing a diffusible dye upon reduction, an electron donor compound and an electron transfer agent, said electron transfer agent being represented by formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, each represents hydrogen, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; R.sub.5 represents a halogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted alkoxy group; R.sub.6, R.sub.7, R.sub.8 and R.sub.

Abstract: A novel silver halide light-sensitive material is provided, comprising a compound represented by the general formula (I): ##STR1## wherein EAG represents an aromatic group which receives electrons from a reducing substance; R.sup.1 represents hydrogen atom or a substituent; R.sup.2 represents an electrophilic group, with the proviso that R.sup.1 and R.sup.2 may be in the position of cis or trans to each other; R.sup.3 and R.sup.4 each represents hydrogen atom or a hydrocarbon group; ETG represents a group capable of transferring electrons; e represents an integer 0 or 1; Time represents a group which undergoes reaction triggered by the cleavage from the carbon carrying R.sup.3 and R.sup.4 to release PUG; t represents an integer 0 or 1; and PUG represents a photographically useful group.In a preferred embodiment, R.sup.1 represents an aromatic group, heterocyclic group or group represented by --Y.sup.1 --R.sup.5 in which Y.sup.1 represents a hetero atom or hetero atomic group and R.sup.

Abstract: A heat developing photosensitive material is disclosed, comprising silver halide, a binder, a reducing agent and a heat solvent, wherein said heat solvent is at least one selected from the group consisting of compounds represented by Formulae I, II and III: ##STR1##

Abstract: A photothermographic element comprising a support bearing an image forming system comprising:(a) a photosensitive silver halide(b) an organic silver compound(c) a polymer binder and(d) a reducing agent for the organic silver compound, characterized in that the reducing agent comprises a redox-dye-releasing compound of the general formula: ##STR1## in which: R represents an organic group which may be oxidatively cleaved to a thermally immobile form,A represents a bond or a divalent linking group having a chain consisting of up to 12 atoms, which is linked to the carbonyl group via a carbon atom or an oxygen atom, andD represents the chromophore of a thermally mobile dye.

Abstract: A color photosensitive material and a process for producing an image using such a material are disclosed. The color photosensitive material comprises a support having thereon a silver halide and a dye releasing compound represented by formula (A). ##STR1## wherein Ar and Ar', which may be the same or different, each represents an aromatic group or a heterocyclic group, Ar and Ar' may be joined together to form a ring, and R represents an aromatic group, a heterocyclic group or a sulfonyl group.

Abstract: A color photographic light-sensitive material comprising a support having thereon at least one layer containing light-sensitive silver salt, wherein the color photographic a light-sensitive material contains at least one image forming compound represented by the following general formula (I):(Dye-X).sub.q -Y (I)wherein Dye, X, q and Y are described in detail below.

Abstract: A method for forming a direct positive image comprising the steps of:(a) imagewise exposing a photographic light-sensitive material composed of a support having thereon at least one unprefogged internal latent image type silver halide light-sensitive emulsion layer; and(b) developing the exposed photographic light-sensitive material to form a direct positive image in the presence of at least one nucleating agent represented by formula (N-I); ##STR1## wherein Z.sup.1 represents nonmetal atomic group necessary for forming a 5-membered or 6-membered heterocyclic ring, a 5-membered or 6-membered heterocyclic ring fused with an aromatic ring, or a 5-membered or 6-member heterocyclic ring fused with another heterocyclic ring; R.sup.1 represents an aliphatic group; X represents ##STR2## Q represents a nonmetallic atomic group necessary for forming a 4-membered to 12-membered nonaromatic hydrocarbon ring or a 4-membered to 12-membered nonaromatic heterocyclic ring; provided that at least one of R.sup.1, Z.sup.

Abstract: A heat-developable light-sensitive material comprising a support having provided thereon a light-sensitive layer comprising a silver halide which is spectrally sensitized with at least one dye represented by formula (I): ##STR1## wherein R.sub.0 and R.sub.1, which may be the same or different, each represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, a halogen atom, an alkoxycarbonyl group, an acylamino group, an acyl group, a cyano group, a carbamoyl group, a sulfamoyl group, a carboxyl group, or an acyloxy group; provided that at least one of R.sub.0 and R.sub.1 represents a group other than a hydrogen atom; R.sub.2 represents a hydrogen atom, an alkyl group, or an aryl group; R.sub.3 represents an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an acyl group, an acyloxy group, an alkoxycarbonyl group, or an acylamino group; provided that when R.sub.3 represents an aryl group, R.sub.0 and R.sub.

Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, said emulsion layer or at least one of other hydrophilic colloid layers containing a compound represented by formula (I):PWR--Time--.sub.T LA (I)wherein PWR represents a group which undergoes reduction to release (Time).sub.t LA; Time represents a group which release LA upon reaction following release of (Time).sub.t LA from PWR; t represents an integer of 0 or 1; and LA represents a group having a maximum light absorption in a wavelength range of 310 nm or more.

Abstract: A heat-processible color photographic material having on a base support at least a light-sensitive silver halide, a reducing agent, a binder and a dye-providing material represented by the following general formula (1) in disclosed. where A is a coupler site capable of dye formation by entering into a coupling reaction with the oxidized product of the reducing agent; L is a divalent linkage grop binding to A at the active point of the coupler site represented by A; B is a ballast group having a sufficient molecular size or shape to render the dye-providing material of the general formula (1) substantially immobile during thermal development; Dye is a dye site, n is 1, 2 or 3, part of the coupler site A optionally serving as part of the dye site Dye.

Abstract: Process for controlling the visual appearance of an image present on a permanent support in the form of a hydrophilic colloid layer, layer system or relief pattern by the transfer of a continuous non-photosensitive layer from a temporary support onto said permanent support either before or after said image is formed thereon, which comprise by pre-wetting the permanent support either image-free or with said image already thereon, containing the pre-wetted support with said continuous layer carried on the temporary support, and stripping off the temporary support to leave the continuous layer adhering on the permanent support, said continuous layer being non-photosensitive and contains hardened gelatin, the gelatin being applied at a coverage of at most 20 g/m2 and having a degree of hardening corresponding with that achieved by the addition of at least 0.001 g of formaldehyde per gram of gelatin.

Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide light-sensitive emulsion layer, wherein at least one compound represented by the formula (I) is present in said silver halide emulsion layer or at least one other hydrophilic colloid layer of said material:A--B (I)wherein A represents a blocking group which can release a dye for photographic purposes during processing and B represents said dye for photographic purposes which is bonded to A by means of a hetero atom.

Abstract: A photothermographic element comprising:(A) a coating comprising a support bearing a photothermographic medium, the medium comprising a light sensitive silver halide in reactive association with a silver salt of an organic acid and a color generating reducing agent which is a leuco compound which is oxidizable by silver ions into a colored dye of the general formula: ##STR1## in which: n=0, 1 or 2,R.sup.1 represents H, CN, lower alkyl of 1 to 5 carbon atoms, aryl or COOR.sup.6 in which R.sup.6 is lower alkyl of 1 to 5 carbon atoms or aryl,R.sup.2 and R.sup.3 independently represent CN, NO.sub.2, COOR.sup.6, SO.sub.2 R.sup.6, CONHR.sup.6 in which R.sup.6 is as defined above or R.sup.2 and R.sup.3 together represent the necessary atoms to form a 5- or 6-membered carbocyclic or heterocyclic ring having ring atoms selected from C, N, O and S atoms, whch carbocyclic or heterocyclic rings possess at least one conjugated electron withdrawing substituent,R.sup.4 and R.sup.

Abstract: A silver halide light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, and containing a compound containing a repeating unit, said compound containing a repeating unit being connected at the repeating unit to a compound represented by formula (I) at the position of the PWR or Time moiety:PWR--Time.sub.t PUG (I)wherein PWR represents a moiety capable of releasing (Time.sub.t PUG upon reduction, and PUG represents a group which can fulfil a photographically useful function after the release; Time represents a moiety capable of releasing PUG through a reaction subsequent to the release from PWR in the form of --Time.sub.t PUG; and t represents 0 or 1.

Abstract: A method of stabilizing organic base materials to light by allowing an organic base material to coexist with at least one type of metal complex which can be represented by the following general formula: ##STR1## wherein R.sup.1 to R.sup.4 are each independently hydrogen atoms, halogen atoms, cyano groups, hydroxyl groups or alkyl groups, aryl groups, cycloalkyl groups or heterocyclic groups which are bonded directly or indirectly via a divalent linking group to a carbon atom on the benzene ring. The R.sup.1 to R.sup.4 substituents may be the same or different, and moreover, two adjacent substituents from among the R.sup.1 to R.sup.4 substituents may be joined together to form a ring. Furthermore, the two R.sup.4 substituents may also be joined together to form a ring.The R.sup.5 and R.sup.6 substituents are independently hydrogen atoms, alkyl groups, alkylthio groups, aryl groups, arylthio groups, heterocyclicthio groups or cyano groups and they may be the same or different. In addition, the R.sup.5 and R.

Abstract: A silver halide photographic material which comprises a support having coated thereon a light-sensitive silver halide emulsion layer, wherein the photographic material contains a blocked photographic agent represented by the following general formula (I): ##STR1## wherein A represents a photographic agent moiety which is bonded to a blocking moiety through a hetero atom, or a precursor thereof; R.sup.1 represents a hydrogen atom or a substituent group; and Z represents atoms necessary to form a carboxylic ring or a heterocyclic ring. The blocked photographic agent is completely stable upon storage of the photographic material, and releases a photographic agent at a desired time upon processing of the photographic material. The blocked photographic agent also exhibits its function to a substantial degree over a wide range.

Abstract: A silver halide photographic material comprising a support having provided thereon at least one silver halide emulsion layer containing a compound represented by formula (I): ##STR1## wherein EAG represents an aromatic group bonding to N.sub.A and capable of accepting an electron;N.sub.A and N.sub.B each represents a nitrogen atom;R.sup.1 represents a lone pair, a .pi.-bond, a .sigma.-bond, or a substituent other than a hyudrogen atom;n represents 2 or 3;m represents 0 when n represents 2, or m represents 1 and N.sub.B has a positive charge when n represents 3;X.sup..crclbar. represents an anion;the groups or bonds represented by R.sup.1 may be combined with each other or may be combined with EAG to form a ring;R.sup.2 represents R.sup.3 --CO--, R.sup.3 --SO.sub.2 --, R.sup.3 --CO--N.dbd.CH--, or R.sup.3 --SO.sub.2 --N.dbd.CH--, wherein R.sup.3 represents an alkyl group, an aryl group, or a heterocyclic group;the group represented by R.sup.2 may be combined with at least one of R.sup.

Abstract: A photothermographic element comprising a support bearing a photothermographic medium, the medium comprising a light sensitive silver halide in reactive association with a silver salt of an organic acid and a color generating reducing agent which is a leuco compound which is oxidisable by silver ions into a colored dye of the general formula: ##STR1## in which: n=0, 1 or 2,R.sup.1 represents H, CN, lower alkyl of 1 to 5 carbon atoms, aryl or COOR.sup.6 in which R.sup.6 is lower alkyl of 1 to 5 carbon atoms or aryl,R.sup.2 and R.sup.3 independently represent CN, NO.sub.2, COOR.sup.6, SO.sub.2 R.sup.6, CONHR.sup.6 in which R.sup.6 is as defined above or R.sup.2 and R.sup.3 together represent the necessary atoms to form a 5- or 6-membered carbocyclic or heterocyclic ring having ring atoms selected from C, N, O and S atoms, which carbocyclic or heterocyclic rings possess at least one conjugated electron withdrawing substituent,R.sup.4 and R.sup.

Abstract: A process for producing masked positive color images by the silver dye bleach process using a developer solution which contains 0.3 to 1.0 mol/l of a bromide.

Abstract: A heat developable color photographic recording material is improved in its D.sub.min /D.sub.max ratio and sensitivity if it contains a silver halide emulsion in which the grains have at least three zones differing in their silver halide composition.

Abstract: Photographic silver halide emulsion element for dye image production comprising a support carrying at least one alkali-permeable silver halide hydrophilic colloid emulsion layer incorporating in operative association therewith a dye-releasing compound capable of releasing a diffusible dye moiety from a carrier moiety by a redox reaction, said compound corresponding to the general formula: ##STR1## wherein CAR is an organic carrier moiety capable of undergoing a redox reaction, L is a group cleavable or releasable from the carrier moiety by a redox reaction taking place in alkaline condiitons as a function of the development of a silver halide emulsion layer incorporating such compound, G is a bridging group, each of L.sup.1 and L.sup.2 is a linking member, PUG.sup.1 is a dye (precursor) group, PUG.sup.2 is a dye (precursor) group, an UV-absorber group, or a singlet oxygen scavenger group.

Abstract: A silver halide photographic light-sensitive material and a process for processing it are disclosed. The light-sensitive material is improved in photographic sensitivity, drying property and anti-roller-mark property and is suitable for the disclosed ultra-rapid processing by an automatic processor in which the photographic material is processed for the time of 20 sec to 60 sec in total. The light-sensitive material comprises a support having on at least one side thereof one or more hydrophilic layers containing gelatin which comprise at least one light-sensitive silver halide emulsion layer. An amount of the gelatin contained in said hydrophilic layer or layers is within the range of from 1.90 to 3.50 g/m.sup.2 and a swelling amount of said hydrophilic layer or layers is within the range of from 30 to 58 g/m.sup.2 when said light-sensitive material is treated in a specific condition for 15 sec. at 35.degree. C.

Abstract: Photographic compound (A) capable of releasing a photographically useful group by means of intramolecular nucleophilic displacement exhibits increased resistance to hydrolysis when the compound contains in a coupling position a coupling-off group represented by the formula: ##STR1## wherein Q, R.sub.q, R.sub.1, R.sub.2, R.sub.3, n and PUG are as defined in the application. Such a compound (A) is useful in a photographic silver halide material and process.

Abstract: A silver halide color photographic material having at least one silver halide emulsion layer on a reflective support is, after having been imagewise exposed, subjected to color development with a color developer which does not substantially contain benzyl alcohol and which contains a bromide ion in an amount of 4.times.10.sup.-3 mol/liter or less, for a period of time of 2 minutes or less, to obtain a color images with a high colored density. The silver halide color photographic material specifically has at least one silver chlorobromide emulsion layer which does not substantially contain silver iodide and which contains silver chloride in an amount of 50 mol % or more.In the color images thus formed by the present process, the colored density is high and the fog is less.

Abstract: A thermally developable light-sensitive material having at least a light-sensitive silver halide, a reducing agent, a binder and a dye-providing material on a support is disclosed. The dye-providing material is a compound that releases or forms a diffusible dye as a function of development and which has a group capable of reacting with the nucleophilic agent.

Abstract: Photographic compounds capable of releasing a photographically useful group (PUG) by means of an intramolecular nucleophilic displacement provide increased image acutance when a coupling-off group in the coupling position of the compound is a group of the formula: ##STR1## wherein PUG is a photographically useful group; Q is N or C--R where R is hydrogen or a substituent that does not adversely affect imaging; and Z represents atoms completing a non-aromatic, heterocyclic ring. The photographic compounds are useful in photographic materials and processes.

Abstract: A new photographic coupler comprises a coupling-off group bonded to the coupler at the coupling position represented by the formula:--L--NR.sup.1 --DYEwherein L is a linking group; NR.sup.1 is a substituted nitrogen atom bonded to DYE that together with NR.sup.1 is a releasable dye comprising an electrically neutral chromophore. Such a coupler enables dye hue stabilization without mordanting the dye formed. Such a new coupler is useful in a photographic silver halide element and process to provide increased dye density, higher contrast dye images, and lower pH sensitivity upon processing.

Abstract: A color photographic recording material for the dye diffusion transfer process contains color producing compounds in the form of a dispersion of particles of an ionically modified polyaddition or polycondensation product containing from 4 to 180 milliequivalents of ionic groups per 100 g, which particles are charged or loaded with the color producing compound. When development is carried out by heat treatment, color transfers with high maximum densities and low minimum densities are obtained.

Abstract: A thermally developable light-sensitive material is disclosed that the said material has at least one light-sensitive silver halide containing layer on a support and which further contains a compound represented by the general formula (I):X (J.sub.m F).sub.n (I)wherein X is the residue of the development restrainer; J is a divalent linkage; F is an immobilizing group that is capable of reducing the diffusibility of the compound of formula (I) or a silver salt or silver complex thereof during thermal development; m is 0 or 1; and n is an integer of 1 to 3.

Abstract: A color light-sensitive material is disclosed. The material is comprised of a support having provided thereon at least one image-forming compound represented by formula (I)(Dye--X).sub.q Y (I)wherein X, Y, q, and Dye are as defined herein. The light-sensitive material shows excellent yellow dye-transferring properties and provides a yellow dye having excellent light fastness.

Abstract: This invention provides a silver halide photographic light sensitive material having an improved blackness of image silver, as well as high sensitivity and covering power. The present silver halide photographic light sensitive material includes at least one layer of a silver halide photographic emulsion on at least one side of a support, characterized in that said layer of silver halide photographic emulsion contains fine silver halide grains, or tabular silver halide grains having a grain thickness of 0.4.mu. or less, and a dye having a maximum absorption wave length of 520 to 580 nm is contained in said layer of silver halide photographic emulsion and/or another layer such that the transmission density of green light is 0.03 or less after the developing treatment of the photographic light sensitive material.

Abstract: Compounds of the formula I are suitable as thermal development and diffusion promoting agents for the heat development process. With the aid of said compounds higher color transfer densities can be achieved and/or the development time can be shortened. ##STR1## wherein X.sub.1 denotes --SO.sub.2 -- or--CO--;R.sup.1 to R.sup.4 denote alkyl, cycloalkyl, aralkyl or aryl;R.sup.5 and R.sup.6 denote acyl or a group as defined for R.sup.1 to R.sup.4 ; and R.sup.1 together with R.sup.5, R.sup.2 together with R.sup.6, R.sup.3 together with R.sup.4 and/or R.sup.1 together with R.sup.2 may in each case form a heterocyclic ring containing at least one nitrogen atom.

Abstract: Dye releasing compounds which release dyes corresponding to formula I ##STR1## wherein R.sup.1 denotes alkyl, aryl, arylamino, alkoxy or aryloxy,R.sup.2 denotes H or halogen,R.sup.3 denotes alkyl with 2-4 carbon atoms,R.sup.4 denotes H or one or more substituents such as alkyl, alkoxy, acylamino or halogen, including a substituent in the ortho-position to the group ##STR2## which together with R.sup.5 completes a cyclic amino group, R.sup.5 denotes alkyl with up to 4 carbon atoms or a group which together with a subsituent denoted by R.sup.4 or together with R.sup.6 completes a cyclic amino group, andR.sup.6 denotes alkyl with up to 4 carbon atoms or a group which together with R.sup.5 completes a cyclic amino groupare suitable for the production of light-stable cyan colour images.

Abstract: A photographic material for the silver dye bleach process comprises, in at least one layer, a colloidal dispersion of azo in gelatine, the ratio of azo dye to gelatine being 1:1 to 1:10.

Abstract: A double coated radiographic element is disclosed comprised of a dye coated between an emulsion layer and a support to reduce crossover to less than 10 percent. The dye is present in the form of microcrystalline particles, yet is capable of being decolorized in less than 90 seconds during processing.

Abstract: Alkyl ketazine dyes are stabilized by the presence of poly(vinyl chloride) and/or poly(vinylidene chloride) binders in photothermographic emulsions.

Abstract: A light-sensitive material is described, comprising a support having provided thereon a light-sensitive layer containing at least a light-sensitive silver halide, a polymerizable compound, a color image forming substance, and a hydrazine derivative represented by formula (I): ##STR1## wherein R.sub.1 represents a monovalent group derived from a substituted or unsubstituted aromatic ring or aromatic heterocyclic ring; R.sub.2 and R.sub.3 each represents a substituted or unsubstituted aryl group; and R.sub.4 represents a hydrogen atom or a substituted or unsubstituted alkyl, aryl, alkoxycarbonyl, or carbamoyl group,in which the color image forming substance is immobilized by imagewise exposure to light followed by heat development under conditions substantially not containing water. The material exhibits high sensitivity and provides a color image through a simple, easy, and rapid dry processing step, with a reduced exposure time.

Abstract: A silver halide color photographic material in disclosed which comprises a support having thereon at least one silver halide emulsion layer, wherein the photographic material contains at least one compound represented by general formula (I) and at least one compound represented by general formula (II) in combination:Cp--(TIME).sub.n --X--Dye (I)wherein Cp represents a coupler residue capable of releasing --(TIME).sub.n --X--Dye upon coupling with an oxidation product of an aromatic primary amine developing agent; TIME represents a timing group; n represents 0 or a positive integer; Dye represents a dye residue, and X represents an auxochromic group of said dye; ##STR1## wherein R represents a hydrogen atom or a substituent; Y represents a hydrogen atom or a coupling-off group; Za, Zb and Zc each represents a methine group, a substituted methine group, .dbd.

Abstract: A color light-sensitive material is provided, comprising on a support at least a light-sensitive silver halide, a binder, a dye providing substance which provides a mobile dye in inverse-relationship to the reduction reaction of silver ion to silver, and a development inhibitor precursor of the general formula (I):PWR--Time--.sub.t AF (I)wherein PWR represents a group which releases (Time--hd tAF by being reduced; AF represents a group which serves as a development inhibitor after being released; Time represents a group which releases AF through a reaction following the release of --Time--.sub.t AF from PWR; and t represents an integer of 0 or 1.