Abstract: Difunctional compounds wherein one of said functions is a hard or soft atom that ionizes to the corresponding anion in alkaline solution to combine with silver cation and the other of said functions is a non-ionizable soft base that additionally combines with said silver cation are employed as silver halide complexing agents in photography. In a preferred embodiment, the difunctional compounds possess (a) an O, N or C atom that ionizes to the corresponding O.sup..crclbar., N.sup..crclbar. or C.sup..crclbar. anion in basic solution and (b) an --S-- containing moiety excluding --SH and moieties that form --S.sup..crclbar. in basic solution wherein the --S-- of said moiety is positioned alpha, beta, gamma, delta, epsilon or zeta to said anion.

Abstract: Disclosed herein are photothermogrpahic elements comprising stable free radical nitroxyl compounds. These compounds do not adversely affect the photographic properties of negative-working radiation sensitive emulsions and can be advantageously used in dry photothermographic processes to produce direct positive neutral or color images.

Abstract: An imaging system is provided wherein a blocked dye precursor is activated by an amine to an unblocked form which, in the presence of an inert cobalt (III) complex containing amine releasing ligands, undergoes a redox reaction to form a dye. The amine generated during the redox reaction causes further dye formation, giving increased speed.

Abstract: An image-receiving layer of an image-receiving element used for a color diffusion transfer process comprising a dyeable polymer or mordant polymer having the structural unit represented by the formula (I) ##STR1## wherein Z represents an atomic group necessary for completing a nitrogen-containing heterocyclic ring and X.sup.- represents a monovalent anion;Or represented by the formula (II) ##STR2## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, an alkyl group, a hydroxyalkyl group, or an aralkyl group, and X.sup.- represents a monovalent anion and a color diffusion transfer process using the image-receiving element described above.

Abstract: Photographic film units and photographic products using an acetal of a hydroxylated polymer and a formyl benzyl quaternary salt(s) as a mordant for diffusible dye image-providing materials.

Abstract: Photographic dye developing agents represented by the following formula (I): ##STR1## wherein A represents an anthraquinone dye moiety, X represents a hydrogen atom, an aliphatic hydrocarbon group, an alicyclic hydrocarbon group, an aryl group or a heterocyclic group, at least one of A and X contains an o-dihydroxyphenyl group or a p-dihydroxyphenyl group as a dye developing agent moiety, n is an integer of 1 to 4, and COY represents a group which is released from the nitrogen atom at a pH of above 9.

Abstract: In a color diffusion transfer photographic material which comprises a photosensitive element containing at least one silver halide emulsion layer having associated therein a non-diffusible dye image-providing material, an image-receiving element for immobilizing therein diffusible dye formed by the oxidation reaction of the dye image-providing material and a primary aromatic amino color developing agent to form dye images, and a processing composition for developing the exposed silver halide in the silver halide emulsion layer and transferring the diffusible dye formed into the image-receiving layer with at least one of the photosensitive elements, the image-receiving element or the processing composition containing a primary aromatic amino color developing agent or a precursor thereof, with the photosensitive element and/or the image-receiving element of the photographic material containing at least one of divinyl sulfone and a divinyl sulfone derivative represented by the formula (I): ##STR1## wherein B rep

Abstract: Color diffusion transfer products and processes are provided incorporating light-sensitive photographic emulsions comprising silver halide grains having an iodide content of about 0.2 to 1.5 mole percent and a mean volume diameter of about 0.05 to 2 .mu., the grain size distribution thereof exhibiting a coefficient of variatin of less than about 35 percent. Preferably, the iodide content of the halide emulsion is about 0.625 percent, the mean volume diameter is about 0.9 to 1.2 .mu., and the coefficient of variation is less than 30 percent. The reamining halides in the grains may be bromide or bromide and chloride. The silver halide emulsions are prepared by single jet techniques.

Abstract: In a color diffusion transfer photographic material comprising a photosensitive element including at least one light-sensitive silver halide emulsion layer having a dye image providing material associated therewith, an image receiving element for fixing the diffusible dye formed from said dye image providing material to form a dye image, an alkaline processing composition capable of developing the exposed photosensitive element, and, if necessary, a hydrophilic colloid layer, the photographic material further having neutralizing means for reducing the pH of the alkaline processing composition.

Abstract: A combination of phthalazine and certain aromatic acids or anhydrides thereof serves as a toner during heat development of exposed dry silver image forming sheet materials.

Abstract: A color photographic light-sensitive material comprising a support having thereon at least one layer of a silver halide photographic emulsion with the light-sensitive material containing at least one hydroquinone compound represented by the following general formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom, ##STR2## or a precursor thereof.

Abstract: In a process for hardening photographic layers which contain protein and in particular gelatine partially hydrolyzed bis-(dichlorotriazin-2-yl)-alkylamines or -arylamines are used as hardeners.

Abstract: An improved process for forming a dye image in an image receiving layer of a film unit containing a light-sensitive element and an image receiving element by incorporation therein of a compound represented by the formula ##STR1## WHEREIN R.sub.1 and R.sub.2 individually represent lower alkyl, and n is 3.

Abstract: A protective plastomeric sheet material for lamination to an image containing layer of a diffusion transfer photographic product.

Abstract: In the photographic dye-diffusion transfer process use is made of dye-giving compounds, which are non diffusing in photographic binder layers, and which during development if oxidized imagewise in accordance with the silver halide developed are split owing to the alkali of the developer composition to release diffusing dyes, which are transferred to an image-receiving layer. The dye-giving compounds have the formulaY--NH--Ar--NH--SO.sub.2 --Xar represents an arylene radical such that the group Y--NH-- is attached to the group --NH--SO.sub.2 --X through a chain of n(n=1,2,3, or 4) vinylene groups which are part of the arylene radical;X represents the radical of a dye or dye precursor;Y represents a --COR or --SO.sub.2 R radical; andR represents an alkyl, aryl or heterocyclic group and can constitute part of a second dye moiety.

Abstract: Diffusion transfer photographic products are disclosed which comprise a support carrying at least a photosensitive silver halide emulsion layer, a dye image-forming material and a layer comprising polymeric derivatives of tetrazole-5-thiols. Associated with this photographic product is a multivalent metal cation which diffuses to the layer comprising the polymeric derivatives of tetrazole-5-thiols to increase the permeability of said tetrazole-5-thiol containing layer to the dye image-forming material.

Abstract: A process for forming a dye image on a receiving element by diffusion transfer from a photosensitive element is disclosed wherein the exposed photosensitive element is processed with an alkaline solution in the presence of a particular dye developer having at least one azo radical.

Abstract: Disclosed herein are heat-activatable adhesive compositions comprising a water-soluble condensation polymer which is characterized by having a glycol component comprising one or more diols, preferably one of which is 1,4-bis(2-hydroxy-ethoxy)cyclohexane; and an acid component comprising greater than 15 and up to about 35 mole percent of at least one diacid or diester monomer having an iminodisulfonyl salt moiety, and from about 65 to about 85 mole percent of one or more other diacids or diesters. These adhesives are further characterized as having high bonding strengths at temperatures above 50.degree. C. They have been found useful in a variety of photographic materials, and particularly in image transfer film units.

Abstract: .alpha.-Acylacetanilide yellow-forming couplers having a cyclic 5- or 6-membered sulfonamide group attached through its nitrogen atom to the phenyl group of the anilide portion of the molecule provide dyes of better light stability. The couplers include both 2-equivalent and 4-equivalent couplers.

Abstract: A neutralization system for the dye diffusion transfer process comprises an acid polymer layer containing a polymer with free acid groups and a retarding layer. The retarding layer contains a hydratable polymer which in its non-hydrated state is a barrier for hydroxyl ions and in its hydrated state provides no resistance for diffusing hydroxyl ions. The retarding layer is arranged between a laminate consisting of a light-sensitive film unit comprising at least a light-sensitive silver halide emulsion layer and a non-diffusible dye giving compound associated with the light-sensitive silver halide emulsion layer. The retarding layer allows a first high pH value to be maintained during a first time interval which is sufficient and necessary for producing the desired image density in the image receiving layer and thereafter a second low pH value to be adjusted within a second time interval which is less than half as long as the first.

Abstract: Stable nitroxyl radicals are useful as oxidants in photographic elements or film units.

Abstract: Disclosed herein is an image-transfer film unit comprising:(1) a photosensitive element comprising a support, having thereon at least one silver halide emulsion layer;(2) an image-receiving layer:(3) interposed between any silver halide emulsion layer and said image-receiving layer, at least one pH selectively permeable layer comprising:(a) from about 1 to 100 mole percent of a polymerized monomer containing at least one active methylene group and having the formula: ##STR1## wherein n is 0 or 1; R is hydrogen or methyl; R.sup.1 is substituted or unsubstituted arylenethylene having the structure: ##STR2## wherein Ar is arylene and R.sup.2 is hydrogen, alkyl, aryl or cycloalkyl, or R.sup.1 has the formula: ##STR3## wherein R.sup.3 is alkylene, arylene or cycloalkylene; and R.sup.4 is alkyl, alkoxy or amino when n is equal to 0, and R.sup.

Abstract: Diffusion transfer integral film units are provided having a flare-reducing layer adjacent or contiguous the photosensitive silver halide layer(s).

Abstract: A hardener composition for hardening a hydrophilic photographic binder comprises a carbodiimide hardening agent and from about 5 to about 200 mol per cent, based on the carbodiimide hardening agent, of an N-hydroxy cyclic amine having a hydroxy group on the ring amino nitrogen atom. The layers to be hardened are exemplified by photographic gelatino silver halide layers and/or the gelatino protective layer of a photographic element.

Abstract: A light-sensitive silver halide photographic material comprising a support having thereon at least one hydrophilic colloid layer which contains a color-forming coupler having a nitrogen-containing residue releasable on reaction of the coupler with an oxidation product of a color developing agent and which contains a thiocarbonyl group (S.dbd.C<), a selenocarbonyl group (Se.dbd.C<) or a telluriumcarbonyl group (Te.dbd.C<), the nitrogen atom of the nitrogen-containing residue being attached to the carbon atom in the coupling position of the coupler.

Abstract: A photographic element comprises a support having thereon a binder containing numerous vesicles, each vesicle comprising a matrix of lipid membranes containing rhodopsin and one of(a) metal cations or(b) materials selected from the group consisting of chelatometric materials, colorimetric reagents for said metal cations, materials which are caused to react by the presence of said metal cations to form a gas or a visible reaction product, and materials which form elemental metal through redox reactions with said metal cationsInside the vesicles and the other (a) or (b) outside the vesicles. On imagewise exposure to light, the metal cations flow through the vesicles and react with the above material in the exposed areas only.

Abstract: A photographic coupler represented by the following formula (I)[a] -- nhcor (i)wherein A represents a cyan color forming coupler residue having a naphthol nucleus or a phenol nucleus; the RCONH-group is a substituted in the coupling position of [A], and R represents (1) an aliphatic hydrocarbon or alicyclic hydrocarbon group which has at least one electron attractive substituent in the .alpha.-position to the carbonyl group in the RCONH- group, or (2) an aryl group, a heterocyclic group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, an acyl group or an amino group which may be substituted with one or more electron attractive substituents, and R as defined by (1) or (2) above is a residue of a carboxylic acid of the formula RCOOH having a pKa of about 1.

Abstract: A photographic film unit comprises a support having coated thereon at least one photosensitive silver halide emulsion, said layer having associated therewith a dye image-providing material, a dye image-receiving layer, means for discharging an alkaline processing composition within the film unit and at least one layer containing at least one para-nitrobenzylidene dye-forming compound. Some of the para-nitrobenzylidene dye-forming compounds are a dark color at moderately and highly alkaline conditions and are colorless at neutral or only slightly alkaline conditions such as at ambient conditions.

Abstract: A dry system for forming and transferring images is provided. The system comprises a photoactive component comprising a tacky photohardenable layer on a selected carrier sheet and a transfer component comprising a frangible color layer on a selected carrier sheet. The two components are disposed with their photohardenable and color layers in air-free contact with one another and then subjected to irradiation with actinic radiation in accordance with a selected image pattern so as to cause selected portions of the photohardenable layer to harden and fuse to confronting portions of the color layer. Then the two components are separated whereby the fused portions of the color layer are separated from its carrier sheet and transferred to the photoactive component. Thereafter the color layer remaining on the transferable component is coated with a pressure-sensitive adhesive.

Abstract: Heterocyclic N-(acylhydrazinophenyl)thioamide nucleating agents are disclosed as well as radiation-sensitive compositions and elements containing such nucleating agents in combination with silver halide grains capable of forming an internal latent image. The elements can be used to form direct-positive photographic images. Dye image transfer photographic elements are specifically contemplated.

Abstract: Diffusion transfer products and processes are disclosed wherein the processing composition includes, as the viscosity increasing component thereof, a polymer containing recurring groups of the formula: ##STR1## wherein R is hydrogen, alkyl or halogen; R.sub.1 is alkyl; R.sub.2 and R.sub.3 each are alkyl, aryl or alkaryl or R.sub.2 and R.sub.3 together may comprise an alkylene group to form a heterocyclic ring with the nitrogen.

Abstract: Color photographic elements, compositions, diffusion transfer film units and processes are described which employ a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol which is preferably alkali-cleavable upon oxidation to release a diffusible color-providing moiety.

Abstract: Improved diffusion transfer photographic products and processes wherein a distinctive image-receiving sheet comprising a plurality of layers one of which comprises a polymeric material providing quaternary nitrogen groups is integrated with an integral negative-position diffusion transfer film unit.

Abstract: A photographic silver halide material containing a new stabilizer compound which is an aromatic compound containing in ortho position two bridging members which are linked to form a spiro structure with a 2'-imidazolidine-4',5'-dione as defined hereinafter.

Abstract: In a diffusion transfer color photographic material including a photosensitive element comprising silver halide emulsion layers having associated therewith dye image forming materials, an image receiving element, and a liquid processing composition for developing the silver halide emulsion layers after image-wise exposure and diffusing the dye images formed into the image receiving element, the dye images formed are stabilized and the formation of stains at blank areas is effectively prevented by incorporating one or more N-.alpha.-sulfoalkylated amino acids into at least one of the photosensitive element, the image receiving element or the liquid processing composition. A process using the same is also disclosed.

Abstract: 1-Sulphonyl-4-amino-pyridinium salts are used as quick acting hardeners for protein-containing layers, in particular gelatine layers, for photographic purposes.

Abstract: A diffusion transfer photographic element containing a lipophilic, non-diffusing color former in a silver halide emulsion layer, or in a layer adjacent thereto, is developed by using a water- and alkali-soluble color developer capable of coupling with the color former to form a diffusible coupled product, the color developer being coated with the silver halide emulsion layer or in any layer of the photographic element or being in an alkaline developing solution.

Abstract: A derivative of paraphenylenediamine, for use as a color developer, having a primary amino group available for oxidative coupling, and a carboxy group bound to the benzene ring to provide the compound with the required stability to enable the compound to be incorporated into a photographic film, the compound being non-diffusible during development of the photographic film in an alkaline processing solution.

Abstract: In a process for hardening photographic protein containing layers as quick acting hardener a carbamoyl pyridinium compound is used the pyridine ring of which carries a sulfoalkyl substituent.

Abstract: A temporary barrier between reactants in photographic products and especially for color diffusion transfer film units comprises two contiguous layers, one layer comprising a polymeric timing layer and having an activation energy of penetration of the layer by an aqueous alkaline solution of less than 18 kcal/mole and the second layer comprising a coalesced or partially coalesced polymeric latex and having an activation energy for the process of penetration of the layer by an aqueous alkaline solution of greater than 18 kcal/mole.

Abstract: As quick-acting hardeners for protein-containing photographic layers water-soluble, organic, asymmetric monocarbodiimides containing an alkyl ammonium group and having a carbonamide group attached to the nitrogen atom are used.

Abstract: An imaging system and process wherein an element comprising a cobalt complex-developer redox system is catalyzed by cobalt sulfide. The cobalt sulfide can be imagewise produced by exposing a photoreducible cobalt complex in the presence of a thioamide, or it can be uniformly distributed and either masked in an imagewise fashion, or reacted with imagewise distributed color developing agent.

Abstract: Compounds of the formula: ##STR1## wherein R is halogen or trifluoromethyl, n is 0 to 5, and CD is the residue of a paraphenylenediamine color developer having a primary amino group available for oxidative coupling, the phenoxycarbonyl group being attached to the primary nitrogen atom of the paraphenylenediamine color developer, are used in a receiving sheet of a diffusion transfer photographic element for coupling with a color former to form a stable dye.

Abstract: A silver ion scavenger layer is employed between adjacent silver halide strata to enhance color separation in multicolor photographic images prepared by processes which utilize the imagewise distribution of silver ions and/or soluble silver complex made available during development to liberate a corresponding imagewise distribution of dye or dye intermediate from a color-providing compound.

Abstract: Monocyclic oxazolinone-2 structures make good 2-equivalent photographic couplers, the oxazolinone-2 ring splitting during the coupling to form a dye. The couplers can be made by condensing an .alpha.-halocarbonyl compound with an inorganic cyanate in a substantially aprotic solvent that can contain a small amount of water.

Abstract: This application is concerned with dye developer diffusion transfer color processes and discloses the incorporation of certain 2-substituted benzimidazoles, e.g., 2-phenyl-benzimidazole, in a dye developer photosensitive element to provide improved temperature latitude.

Abstract: A temporary barrier between reactants in photographic products and especially for color diffusion transfer film unit comprises a polymeric layer of at least partially coalesced latex, said layer having an activation energy of penetration by an aqueous alkaline solution of greater than 18 kcal/mole.

Abstract: In a photographic monosheet material for the dye diffusion transfer process a temporary bond is adjusted between a first layer and a second layer by placing between said layers another layer of a graft polymer which is obtained by grafting a monomer containing double bonds capable of radical polymerization onto a hydrophilic linear basis polymer. The two layers are firmly bonded to each other but are easily separated, when the processing liquid is forced between them.

Abstract: As quick-acting hardeners for layers which contain protein, in particular gelatin layers for photographic purposes carbamoyl oxypyridinium salts are used.

Abstract: A color photographic material for, in particular, a color diffusion transfer process having at least one silver halide emulsion layer having associated therewith a dye releasing redox compound shown by the formula ##STR1## wherein G represents a hydroxyl group or a group yielding a hydroxyl group by hydrolysis, Col represents a dye or a group yielding a dye by hydrolysis, R represents an alkyl group or an aromatic group, X represents a substituent comprising an electron donating group or substituents, which may be same or different, at least one of which comprises an electron donating group, and n is 1, 2, or 3, where X moieties may form a condensed ring (excluding an aromatic hydrocarbon ring) with each other or with OR, wherein the total carbon number of Xn and R is more than 8.