Abstract: Silver halide photographic elements are described containing, as a bleach accelerator precursor, a silver salt of a solubilized, non-primary amino thiol. The bleach accelerators are operable with a multiplicity of bleach compositions and do not deleteriously affect the sensitometric properties of the photographic element.

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 light-sensitive material package unit having an exposure function is disclosed, in which said light-sensitive material comprises a support having provided thereon 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 a magenta coupler, and at least one blue-sensitive silver halide emulsion layer containing a yellow coupler; at least one of said light-sensitive emulsion layers is composed of at least two layers being substantially the same in color sensitivity and different in sensitivity; and said light-sensitive emulsion layer composed of at least two layers contains a compound represented by formula (I)A--L.sub.1).sub.b Z.sub.1 (I)wherein A represents a component capable of releasing --(L.sub.1).sub.b Z.sub.1 upon reacting with an oxidation product of a color developing agent; L.sub.1 represents a timing group; Z.sub.

Abstract: A silver halide photographic material is disclosed, which comprises a support having formed thereon at least one silver halide emulsion layer, wherein the silver halide photographic material contains, in the silver halide emulsion layer, other hydrophilic colloid layer(s), or both, a compound represented by formula (I) ##STR1## wherein EAG represents an electron accepting group, --SO.sub.2 -- represents a sulfonylene group; X represents an oxygen atom (--O--), a sulfur atom (--S--) or an atomic group (--N(R.sub.2)--) containing a nitrogen atom; the single bond between --SO.sub.2 and X being cleaved after EAG receives an electron, wherein R.sub.1 and R.sub.2 each represents a simple bond or a group other than a hydrogen atom; said R.sub.1, R.sub.2, EAG may be combined with each other to form a ring; (Time) represents a group capable of releasing a photographically useful group (PUG) upon the cleavage of the SO.sub.

Abstract: There are disclosed a processing solution of a light-sensitive silver halide color photographic material, which comprises containing a compound represented by the formula (I) shown below, and a processing method of the same, which comprises subjecting a light-sensitive silver halide color photographic material having at least one layer of silver halide emulsion layer on a support to imagewise exposure and then applying processing including at least a color developing processing, characterized in that the color developing solution to be used in the color developing processing contains a compound represented by the formula (I) shown below: ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.2 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.1 and R.sub.2 may be bonded with each other to form a ring containing an oxygen atom.

Abstract: A method of storing a liquid color developer and a liquid bleach-fixer in a container made of plastic material having an oxygen permeation coefficient of 0 to 50 m/(m.sup.2 atm day) at temperatures of 20.degree. C. and relative humidity of 60%. The developer contains an aromatic primary amine color developing agent; a hydroxylamine of the formula ##STR1## wherein R.sup.1 and R.sup.2 are hydrogen or alkyl having 1 to 3 carbon atoms, provided that at least one of R.sup.1 and R.sup.2 is an unsubstituted alkyl group having 1 to 3 carbon atoms and that R.sup.1 and R.sup.2 may be combined with each other to form a ring; and an alkaline ingredient for adjusting the pH of the developer to not less than 9.5. The bleach-fixer contains a ferric aminopolycarboxylate, 0 to 1.times.10.sup.-3 mols per liter of an aminopolycarboxylic acid based on the total bleach-fixer, a thiosulfate, and 1.times.10.sup.-3 to 2.times.10.sup.-1 mol per liter of said liquid bleach-fixer of a sulfite.

Abstract: A photogrphic light-sensitive material comparing a support having thereon at least one silver halide emulsion layer, wherein the silver halide emulsion layer comprises a silver chlorobromide emulsion which is substantially free of iodide and has a chloride content which satisfies the following relationship (I) between a mean mole % of silver chloride in grain group (A), in which the grains have sizes not less than the median size in the grain size distribution, and a mean mole % of silver chloride in grain group (B) in which the grains have sizes less than the median size, whereby excellent gradation and wide exposure latitude are achieved, and there is a small dependence on the development conditions.Relationship (I): 1.ltoreq.[Mean mol % of silver chloride in grain group (A)]-[Mean mol % of silver chloride in grain group (B)].ltoreq.99.

Abstract: The present invention provides silver halide photographic materials containing a havel compound, which when reduced, releases a photographically useful group as triggered off by the cleavage of the nitrogen-oxygen single bond in the compound and which is represented by the following general formula (I): ##STR1## wherein EAG represents a group which accepts an electron from a reducing substance; N and O each represents nitrogen atom and an oxygen atom, respectively; R.sup.1 and R.sup.2 each represents a substituent other than a hydrogen atom, and when R.sup.1 or R.sup.2 is bonded to --(Time).sub.t PUG, R.sup.1 or R.sup.2 is a mere bond or a substituent other than a hydrogen atom, and R.sup.1 and R.sup.

Abstract: A silver halide emulsion for use in a radiographic element,--comprising at least one silver halide emulsion layer coated on one side or on both sides of a transparent support--, characterized by the fact that it contains silver halide cubic grains having J-band spectral sensitizing dyes adsorbed on the surface thereof in a quantity substantially higher than that amount which substantially optimally sensitizes said grains, exhibits a reduced residual stain and an improved image quality.

Abstract: A novel silver halide color photographic material is provided comprising a compound of the general formula (I):LIG-A-LVG (I)wherein A represents a group which reacts with an oxidation product of a developing agent to cleave the bond to LVG; LVG represents a coupling-off group; and LIG represents a group which reacts with metal ions to form a complex compound.A novel method of processing the instant silver halide color photographic material is provided including a processing step using a processing solution of an iron (II) ion concentration of 1.times.10.sup.-6 to 1 mol/l. In the processing step, the potential of a bath having a bleaching capacity containing an aminopolycarboxylic acid-iron (III) complex salt is 150 mV or less.

Abstract: There is disclosed a light-sensitive silver halide photographic material having a silver halide emulsion layer containing a coupler on a support, comprising at least one of the metal complexes having a quenching constant of singlet oxygen of 3.times.10.sup.7 M.sup.-1.sec.sup.-1 or higher and at least one of oil-soluble dyes, and which may further comprise at least one of the magenta couplers represented by the formula (I) shown below: ##STR1## wherein Z represents a group of non-metal atoms necessary for formation of a nitrogen-containing heterocyclic ring, and the ring formed by the Z may have substituents; X represents a hydrogen atom or a substituent eliminable through the reaction with the oxidized product of a color developing agent; and R represents a hydrogen atom or a substituent.

Abstract: A photographic element comprising a silver halide emulsion layer having associated therewith a compound having the formula ##STR1## wherein Y is --O--, --S--, --NH-- or --NR.sup.1 --;n is 0 or 1;each R.sup.1 independently is the residue of a phosphorus acid;each Z independently represents the atoms necessary to complete a substituted or unsubstituted benzene ring; and,X is a single bond or a linking group having a single atom which separates the two benzene rings.Use of the compound provides increased stability of the dye image obtained during photographic processing.

Abstract: A silver halide photographic light-sensitive material containing, in at least one layer thereof, a compound capable of releasing a fogging agent upon an oxidation-reduction reaction with an oxidation product of a developing agent under an alkaline condition. The material has an increased sensitivity, an increased contrast and an accelerated development rate.

Abstract: Photographic elements and processes are described which employ a compound containing a hydrazide moiety attached by a linking group, comprising an acidic group or an active methylene group adjacent to an acidic group, to a heteroatom of a moiety containing a photographically useful group comprising a photographic dye or precursor thereof or a photographic reagent; wherein:(a) the hydrazide moiety is capable of being oxidized to an azo group by an oxidized developing agent,(b) the azo group formation causes the release of the photographically useful group, and(c) the released photographically useful group does not contain the linking group or the nitrogen atoms of the hydrazide moiety.

Abstract: A silver halide photographic material is described comprising at least one layer which contains at least(1) a polymer comprising as constitutional components thereof a repeating unit having a photographically useful group and at least one repeating unit having a sulfinic acid group or a sulfinate group, and(2) a compound having at least one functional group capable of reacting with at least one of a sulfinic acid group and sulfinate group and at least one functional group capable of reacting with at least one of a sulfinic acid group, a sulfinate group and a primary amino group.Said photographic group-containing polymer (1) may be fixed in a photographic layer according to the present photographic material, and does not substantially migrate therefrom during development or other photographic treatment, thus resulting in formation of color images of high density.

Abstract: A silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer having associated therewith at least one blocked photographic reagent represented by formula (I) or (II); ##STR1## wherein, A represents a moiety of a photographic reagent or a moiety of a precursor of a photographic reagent bonded to the ring containing Z through a hetero atom; Y.sup.1, and Y.sup.2 and Y.sup.3 each represents a hydrogen atom or a substituent, or Y.sup.1 and Y.sup.3 in formula (I) together form a ring; Z represents an atomic group necessary for forming a carbon ring or a heterocyclic ring; and n represents 1 or 2.The silver halide photographic material is stable under storage conditions.

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

Abstract: Photographic recording materials which contain a developer substance or a precursor thereof produce better results if in addition they contain a sulphite, a disulphite or a compound capable of releasing sulphite in the photographic material.

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 heat-developable light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion and an acid precursor having a structural moiety represented by the following formula (I) bonded to carbon atoms: ##STR1## The acid precursor is extremely stable at room temperature but when it is heated above a certain temperature, and the development proceeds to the desired appropriate condition, it releases an acid to neutralize a base, whereby the development is stopped. A heat-developable light-sensitive material containing the acid precursor provides color images having a high S/N ratio and a high image density.

Abstract: Photographic elements and assemblages are described which employ nondiffusible compounds which release photographically useful groups in an imagewise manner as the result of a .beta.-elimination reaction.

Abstract: Combinations of supersensitizers for photographic emulsions have been found which provide increased speed.

Abstract: A silver halide color photographic light-sensitive material containing a compound of the general formula (I) as a color stain inhibitor: ##STR1## R.sup.1, R.sup.2, R.sup.3, l, m and n are as defined herein. This color stain inhibitor has various advantages and is capable of efficiently removing oxidized color developing agents, can be used in light-sensitive materials with reduced layer thickness, and is free from changes in performance even after a long-term storage.

Abstract: A process for obtaining highly stable color photographic images utilizes a silver halide photographic element comprising an essentially colorless, immobile compound which is capable of complexing with ferrous ions to form a dye. The complexing compound contains a complexing moiety which is represented by the formula: ##STR1## wherein m is zero or a positive integer 1 to 3, n and p are independently 0 or 1 and represents a single or double bond. Z is R.sup.1 --N.dbd., O.dbd., S.dbd., R.sup.1 --P.dbd., (R.sup.1).sub.2 P-- or (R.sup.1).sub.3 P.dbd., and when Z is (R.sup.1).sub.2 P--, n is 1, otherwise n is 0. R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are independently hydrogen, amino, hydroxy, mercapto, alkoxy, alkyl, aryl or a heterocyclic moiety. When R.sup.6 is so defined, p is 1 and is a single bond. If m is 0, R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, and R.sup.3 and R.sup.

Abstract: Essentially colorless, hydrophilic ligand-releasing polymers are prepared from ethylenically unsaturated polymerizable monomers represented by the structure: ##STR1## wherein R' is hydrogen or lower alkyl, COUP is a photographic color coupling moiety, LINK is a coupling-off group which can be cleaved by an oxidized developer composition, and LIG is a ligand capable of complexing with metal ions, while joined to the polymer, to form a dye. These polymers also have recurring units which impart hydrophilicity to the polymer. These polymers form metal complex dyes in unexposed areas of photographic elements only, while the ligand is cleaved from the polymer in the exposed areas and washed out of the element.

Abstract: A process of obtaining highly stable color masking dyes comprises use of an element which has a support having thereon at least one silver halide emulsion layer having associated therewith an essentially colorless, immobile, ligand-releasing compound of the structure LIG-X. In this structure, X is a group which, as a function of silver halide development, is cleaved from LIG, and LIG is a ligand capable of complexing with metal ions while joined to X to form a color masking dye. A color masking dye is formed by developing the imagewise exposed areas of the described element with a developing agent to cleave LIG from X and washing substantially all of the cleaved LIG moieties in those areas out of the element, and treating the element with metal ions to form a masking dye complex with LIG-X in unexposed areas.

Abstract: A process of obtaining highly stable color images comprises use of an element which has a support having thereon at least one silver halide emulsion layer having associated therewith an essentially colorless, immobile, ligand-releasing compound of the structure LIG-X. In this structure, LIG is a ligand which is capable of complexing with metal ions (e.g. ferrous ions) to form a metal complex dye, and X is a group which, as a function of silver halide development, is cleaved from LIG. A color image is formed by developing the described element after imagewise exposure with a developing agent to imagewise cleave the bond between the LIG and X, and treating the developed element with metal ions (e.g. ferrous ions) to form a metal complex dye image.

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 photographic light-sensitive material comprising a support having provided thereon at least one light-sensitive silver halide emulsion layer in combination with an immobile LDA compound represented by the following general formula (I): ##STR1## wherein n, x, y and z each stands for an integer of 1 or 2; m stands for an integer of 1 or more; D stands for a group containing an electron donor or its precursor moiety; A stands for an organic group linking Nup to --E--Q--Col or D; Nup stands for a precursor of a nucleophilic group; E stands for an electrophilic center; Q is a divalent group; Col stands for a group containing a dye or its precursor moiety; Ball stands for a ballast group; L stands for a linking group; and M stands for an optional substituent, said LDA compound being capable of releasing a diffusible dye or its precursor upon redox reaction.

Abstract: A silver image and dye image are provided in a photothermographic element comprising a support bearing, in reactive association, (A) a silver compound capable of forming a silver image, and (B) a dye-forming combination comprising (a) a cobalt (III) amine complex capable of releasing ammonia or an amine at processing temperature in the presence of silver and (b) an aromatic 1,2-dialdehyde capable of forming a dye upon reaction with an amine or ammonia. Improvements are provided in such an element by a cyclic imide melt former-silver solvent which is capable of promoting dye formation at processing temperature. A silver image and dye image are formed in such an exposed photothermographic element upon thermal processing. The photothermographic element optionally can comprise a dye image receiver layer.

Abstract: Photographic products and processes for the imagewise generation of a dye from a color shifted dye precursor of a preformed image dye, said precursor having at least one ##STR1## group, wherein R is hydrogen, alkyl, provided that the .alpha.- carbon does not have a hydrogen atom attached thereto, aryl such as phenyl or substituted phenyl, e.g. p-nitrophenyl, or heterocyclic such as pyridine; R.sub.1 -R.sub.6 are hydrogen, alkyl, preferably having from 1 to 6 carbon atoms, or aryl; n is 0 or 1; and T is a moiety containing a thiazolidin-2-yl group which upon silver-assisted cleavage of said thiazolidin-2-yl group results in the formation of a ##STR2## group, which may be protonated under the reaction conditions, followed by cleavage of said ##STR3## which cleavage is anchimerically assisted or accelerated by said ##STR4## to provide after protonation, an ##STR5## group in a dye chromophore. In a preferred embodiment the precursor is a substantially colorless compound.

Abstract: A photographic construction comprises at least one spectrally-sensitized polymeric binder layer containing photographic silver halide and, in association therewitha. a non-light sensitive organic silver salt oxidizing agent,b. at least one biphenol color-forming reducing agent having the formula ##STR1## wherein each R is independently selected from a straight chain or branched alkyl or alkoxy group having 1 to 6 carbon atoms, and phenyl, and R.sup.1 is hydrogen or an alkalilabile protecting group, andc. at least one aliphatic or aromatic carboxylic acid of a specific class, which preferably is p-aminobenzoic acid, as development modifier, andd. optionally, at least one toner.

Abstract: A color photographic material containing, as a color stain preventing agent, a substantially colorless phenol and/or naphthol derivative having a group which is not released by displacement of the oxidation product of an aromatic primary amine color developing agent at the 4-position thereof and at least one sulfonamido group and at least one sulfonamido group, acylamino group or sulfonyl group at other positions of the ring. The color stain preventing agent very effectively removes the oxidation product of a color developing agent at color development and maintain the effect for a long period of time.

Abstract: A novel color stain inhibitor is disclosed, which is a compound comprising a phenol or naphthol ring substituted by at least one substituted or unsubstituted sulfamoyl group. Preferred examples of these compounds are represented by the general formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and Q are as defined herein. In light-sensitive materials containing the color stain inhibitors of the present invention, color stain is efficiently prevented.

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: There are described novel photographic products and processes which utilize compounds which release a photographic reagent in the presence of alkali. The compounds include an imidazole blocking group and cleave in alkali to release the photographic reagent. Also described are novel compounds.

Abstract: There is disclosed a light-sensitive silver halide photographic material comprising at least one hydrophilic colloid layer containing at least one compound represented by the following general formula [I]: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 have the same meanings as defined in the specification.The light-sensitive silver halide photographic material according to this invention has excellent bacteriocidal properties and does not adversely affect photographic performance.

Abstract: There is disclosed a light-sensitive silver halide photographic material containing a compound represented by the formula (I): ##STR1## wherein G, R.sub.1, R.sub.2 and X have the same meanings as defined in the specification.The 1-naphthol coupler which is contained in the light-sensitive silver halide photographic material is high in reactivity with an oxidized product of a color forming developing agent and can efficiently impart imagewise photographic effects to light-sensitive silver halide photographic materials.

Abstract: A silver halide color photographic material which is improved in granularity by containing both a gallic acid amide derivative represented by the following general formula (I) and a high speed reaction type coupler: ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, a substituted or an unsubstituted aliphatic group, a substituted or an unsubstituted aromatic group, or a substituted or an unsubstituted heterocyclic group, and they may be the same group provided that they are not simultaneously hydrogen atoms, and, further, they may combine with each other to form a ring.

Abstract: There is disclosed a process for producing a silver halide emulsion comprising sulfur sensitizing a silver halide emulsion for photography containing a chloride rich silver halide comprising 80 mole % or more of silver chloride under the conditions of pAg and/or temperature during the sulfur sensitization which are constituted of at least two different steps with lapse of time.According to this invention, there is provided a silver halide emulsion which can give a good image without any change, can exhibit advantages of silver chloride, and is improved in the drawbacks of high fog and poor shelf-stability of silver chloride.

Abstract: This invention relates to photographic processes and products for forming an image in dye from a colorless precursor of a preformed image dye which is substituted with a moiety containing a thiazolidinyl group, said thiazolidinyl group (a) being capable of undergoing cleavage imagewise in the presence of an imagewise distribution of silver ion and/or soluble silver complex and (b) possessing a substituent on the carbon atom in the 2-position that undergoes a .beta.-elimination reaction upon said imagewise cleavage, which moiety maintains the precursor in its colorless form at least until said thiazolidinyl group undergoes said cleavage. In a further embodiment, an imagewise distribution of a photographically useful reagent, which reagent may be, for example, a photographically active reagent, is released as a carbamic acid by a .beta.-elimination reaction following the cleavage of a thiazolidinyl group whereby said reagent is provided with a solubilizing group at least during the initial stages of processing.

Abstract: This invention relates to photographic processes and products for forming an image in dye from a colorless precursor of a preformed image dye which is substituted with a moiety comprising a 1,3-sulfur-nitrogen group that undergoes cleavage in the presence of silver ion and/or soluble silver complex, which moiety maintains said precursor in its colorless form at least until the 1,3-sulfur-nitrogen group undergoes cleavage imagewise to correspond to the imagewise distribution of silver ion and/or soluble silver complex made available as a function of development.

Abstract: This invention relates to photographic processes and products for forming an image in dye from a colorless precursor of a preformed image dye which is substituted with a moiety containing a thiazolidinyl group, said thiazolidinyl group (a) being capable of undergoing cleavage imagewise in the presence of an imagewise distribution of silver ion and/or soluble silver complex and (b) possessing a substituent on the carbon atom in the 2-position which upon cleavage of said thiazolidinyl group, undergoes a .beta.-elimination reaction followed by an intramolecularly accelerated nucleophilic displacement reaction, which moiety maintains the precursor in its colorless form at least until said thiazolidinyl group undergoes said cleavage. In a further embodiment, this sequence of reactions is used to release an imagewise distribution of a photographically useful reagent which reagent may be, for example, a photographically active reagent.

Abstract: This invention relates to photographic processes and products for forming an image in dye from a colorless precursor of a preformed image dye which is substituted with a moiety comprising a 1,3-sulfur-nitrogen group, said 1,3-sulfur-nitrogen group (a) being capable of undergoing cleavage in the presence of silver ion and/or soluble silver complex, and (b) possessing an amide substituent on the carbon atom in the 2-position that undergoes an intramolecularly accelerated cleavage reaction following the cleavage of said 1,3-sulfur-nitrogen group, which moiety maintains said precursor in its colorless form at least until the 1,3-sulfur-nitrogen group undergoes said cleavage. In a further embodiment, the cleavage of the amide substituent following the cleavage of the 1,3-sulfur-nitrogen group is used to provide an imagewise distribution of a photographically useful reagent, which reagent may be, for example, a photographically active reagent.

Abstract: A novel silver halide photographic element which contains a nondiffusible complex capable of releasing a diffusible, photographically useful material is disclosed.Said nondiffusible complex becomes active for ligand exchange upon reduction under alkalin conditions to release a diffusible, photographically useful material, said complex being represented by the following formula: ##STR1## wherein La is a quadridentate ligand group; Lb is a didentate ligand group; BALL is a ballast group; PHOTO is a photographically useful material group; Y is a counter ion; and r is the number of counter ions necessary for neutralizing the electric charge on the CO(III) complex.

Abstract: The use of oxythioamido substituted arylhydrazides in producing images in silver halide photographic elements is disclosed. The oxythioamido substituted arylhydrazide can be incorporated in photographic silver halide emulsions. The oxythioamido substituent is capable of promoting adsorption of the arylhydrazide to silver halide grain surfaces. In negative working surface latent image forming emulsions the oxythioamido substituted arylhydrazides permit higher speeds to be achieved. In direct positive internal latent image forming emulsions increased nucleation activity can be achieved.

Abstract: Sulfilimine compounds of formula I ##STR1## wherein X is the integrating residue of a photographically active compound H.sub.2 N--A--X andA is a linking member between X and N consisting of a benzene ring having at least two electron-attracting groupsare suitable compounds for photographic recording materials. The compounds can be split reductively to release the photographically active compound. Where the photographically active compound is a dye or dye precursor the sulfilimine compounds are suitable dye releasers for color diffusion transfer processes.

Abstract: Compounds corresponding to the formula: ##STR1## wherein Z represents a radical which completes a condensed aromatic ring system;R.sup.1 represents an n-valent aliphatic or aromatic radical;R.sup.2 represents H, alkyl or aryl,R.sup.3 represents one or more radicals to control the diffusion properties and the activation pH;andn represents 1 or 2,are suitable ED precursor compounds for use in color-photographic recording materials. They are preferably used in a combination with reducible dye-releasers. They are also suitable as so-called scavengers.

Abstract: A direct positive type light sensitive silver halide photographic material is disclosed. At least one layer containing an unfogged internal latent image type silver halide emulsion, is provided on a support, and an internal latent image type silver halide emulsion having fog centers in silver halide grains, is incorporated in said layer or in another constituent layer of the photographic material. A dye image forming substance may be incorporated in the same layer or in a separate layer to form a color diffusion transfer type light sensitive photograhic material. The photographic materials present a positive image having a high maximum density and a low minimum density.

Abstract: A new color-forming 4-(4'-secondary or tertiary-amino)anilino-1-carboxamidonaphthalene dye precursor in a photographic material and process enables formation of a dye image by means of cross-oxidation without the need for a coupling reaction. The color-forming 4-(4'-secondary or tertiary-amino)anilino-1-carboxamidonaphthalene dye precursor is useful in a photographic silver halide material for producing (i) a dye image, or (ii) a dye image and silver image. The exposed photographic material is processed to produce (a) a positive dye image, (b) a negative dye and negative silver image, (c) a negative dye image or (d) a positive dye image and a positive silver image. New naphthoquinoneimide dyes are also described.