Abstract: An image-receiving element for heat transfer type dye image, which comprises a support, a binder and a compound represented by the formula (I) shown below on the support: Formula (I)[M(X.sub.1).sub.l (X.sub.2).sub.m (X.sub.3).sub.n ].sup.P+ Qwherein, M represents a transition metal ion, X.sub.1, X.sub.2 and X.sub.3 represent a coordination compound capable of forming a complex by coordinate bonding with the transition metal ion, Q is at least one of ##STR1## and (R.sub.5 --SO.sub.3.sup.-).sub.p, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent an alkyl group, an aryl group, a cyano group, a heterocyclic residual group or hydrogen atom (these may be the same or different), R.sub.5 represents an alkyl group or an aryl group, p represents 1, 2 or 3, m represents 1, 2 or 0, n represents 1 or 0, and p represents 1 or 2.

Abstract: A color photographic element for use in color diffusion transfer photography comprised of a lightsensitive dye release and receiving sheet and a cover sheet, wherein development, dye release and dye transfer occur in the presence of an alkaline processing solution, and wherein the cover sheet is provided with a neutralizing system which causes neutralization by an alkaline processing solution to proceed by at least a first and a second stage, wherein the first stage is characterized in that neutralization (lowering) of the pH of an alkaline processing solution occurs to the extent to interrupt development and dye release reactions but at which the transfer of a dye for forming a transfer image can continue, and a second stage at which the pH of the processing solution is gradually lowered to a final value which is stably maintained over prolonged storage, the photographic element characterized in that the neutralizing system comprises at least a neutralizing layer, a 2nd neutralization timing layer, an auxili

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: Disclosed is a color diffusion transfer photographic element having a neutralization system for lowering the pH value of an alkaline processing solution, wherein the said neutralization system contains a reducing sugar in an amount of from 0.1 to 20 mmol/m.sup.2. The element may be a monosheet type element comprising a light-sensitive element and a cover sheet, and the neutralization system may be present either in the light-sensitive element or in the cover sheet. By the addition of the reducing sugar to the neutralization system, the image storability (light-fastness) under high temperature and high humidity conditions can be improved.

Abstract: In a heat-transfer image-receiving element adapted to have a superposed relation, at least during a heat-transfer processing, with a heat-transfer element containing a heat-transferable dye donator, wherein said heat-transfer image-receiving element comprises at least one of compounds having the following general Formula (I), (II) or (III) and at least one of compounds having the following general Formula (IV) ##STR1## wherein R.sub.1, R.sub.1 ', R.sub.3, R.sub.3 ' and R.sub.5 each is a hydrogen atom, alkyl, alkenyl, cycloalkyl, phenyl, naphthyl, heterocyclic, acyl, alkylsulfonyl, arylsulfonyl or aralkylsulfonyl group; R.sub.2, R.sub.4, R.sub.4 ', R.sub.6 and R.sub.7 each is a hydrogen atom, a halogen atom, or a monovalent organic group, l is an integer of from 1 to 4, q is an integer of from 1 to 6, m, n and p each is an integer of from 1 to 3, provided if the l, m, n, p and q each is an integer of not less than 2, the R.sub.2, R.sub.4, R.sub.4 ', R.sub.6 and R.sub.

Abstract: A color diffusion transfer photographic element comprised of a light-sensitive dye release and receiving sheet and a cover sheet, wherein development, dye release and dye transfer occur in the presence of an alkaline processing solution, and wherein the cover sheet is provided with a neutralizing system which causes neutralization by an alkaline processing solution to proceed by at least a first and second stage, wherein the first stage is characterized in that neutralization (lowering) of the pH of an alkaline processing solution occurs to the extent to interrupt development and dye release reactions but at which the transfer of a dye for forming a transfer image can continue, and a second stage at which the pH of the processing solution is gradually lowered to a final value which is stably maintained over prolonged storage, the photographic element characterized in that the neutralizing system comprises at least a neutralizing layer, a second neutralization timing layer, an auxiliary neutralizing layer, and

Abstract: The present invention provides a dye diffusion transfer imaging process comprising transferring image-wise by diffusion an acid dye to an image-receiving layer incorporating a non-polymeric phosphonium mordanting agent and a copolymer latex comprising free weak acid groups as a stabilizer for the mordanting agent, wherein the image-wise transfer of said acid dye is performed in the presence of a heterocyclic compound corresponding to one of the following general formulae I, II, and III: ##STR1## wherein: Y represents the non-metallic atoms needed to complete a saturated or unsaturated 5- or 6-membered heterocyclic nucleus, which may carry a fused-on aromatic ring system, and M represents hydrogen, an alkali metal atom, a quaternary ammonium group, or a negative charge forming an inner salt with a quaternized nitrogen atom of the heterocyclic compound. The invention also provides an image receptor element for dye diffusion transfer imaging processes comprising a support and such image-receiving layer.

Abstract: A processing composition for use in color diffusion transfer photograph is disclosed, comprising a compound represented formula (I): ##STR1## wherein R.sup.1 and R.sup.2 each represents an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group, or R.sup.1 and R.sup.2 together form a ring; M represents a hydrogen atom, an alkali metal, an alkaline earth metal, or ammonium; and Y represents a sulfonyl or carbonyl group.

Abstract: A method for increasing color-fastness of organic coloring matters against light is disclosed. The color-fastness of the organic coloring matter of which absorption maximum is the region from 400 nm to 700 nm is increased by coexisting with a metal complex represented by the following general formula: ##STR1## in which R.sub.1 R.sub.2, R.sub.1 ' and R.sub.2 ' are a hydrogen atom or a substituent, X and X' are O or S, Y is O, S, SO or SO.sub.2 and M is a metal atom.The method adapts to improve the fastness of color images of silver halide photographic materials. In this case, the organic coloring matter is a dyestuff formed by coupling a color forming coupler with an oxidation product of a color developing agent in the silver halide color photographic material or a dyestuff diffused to a receiving layer of the diffusion transfer silver halide color photographic material.

Abstract: A silver halide color photographic material having low color stain and color fog, which contains at least one substantially colorless compound selected from the group consisting of compounds represented by formula (I) ##STR1## and alkaline unstable precursors thereof, bis, tris and tetrakis compounds derived from the compound, and polymers derived from the compound; wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl, acylamino, alkoxy, aryloxy, alkylthio, arylthio, sulfonyl, carbamoyl, or sulfamoyl group; or R.sup.1 and R.sup.2 together form a carbocyclic ring; R.sup.3 represents a hydrogen atom or an alkyl group; and R.sup.4, R.sup.5, R.sup.6, R.sup.7, and R.sup.

Abstract: A process for improving adhesion between photographic layers of a photographic element comprising a support having provided thereon at least(1) a first photographic layer comprising a high molecular weight compound having a functional group capable of reacting with an isocyanate group and(2) a second photographic layer comprising a high molecular weight compound having a functional group capable of reacting with an isocyanate group which compound is different from the high molecular weight compound of said first layer,which process comprises coating from 2 to 20 ml/m.sup.2 of a solution containing a polyisocyanate compound having at least two isocyanate groups on the first photographic layer, drying said solution, and then coating the second photographic layer.

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 nonseparation monosheet integrated type color diffusion transfer photographic film unit is disclosed comprising(a) a light-sensitive element comprising a support having provided thereon in this order an image receiving layer, a white reflection layer and at least one silver halide emulsion layer associated with a dye providing compound capable of forming or releasing a diffusible dye as a result of development;(b) a cover sheet;(c) at least one neutralizing layer;(d) a container provided between the emulsion layer of the light-sensitive element and the cover sheet, containing an alkali processing composition which contains an aluminum compound.

Abstract: A heat-developable color photographic material comprising a support having thereon at least a light-sensitive silver halide, a hydrophilic binder, a dye releasing redox compound capable of releasing a hydrophilic dye and a compound represented by the following general formula (IIA): ##STR1## wherein B represents an alkyl group or a substituted alkyl group; m represents 0 or an integer of 1 to 4; and A represents an alkyl group, an aryl group, a cycloalkyl group, an aralkyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an acyl group, an alkoxycarbonyl group, an amino group, an N-substituted amino group, an acylamino group, a carbamoyl group, an N-substituted carbamoyl group, an alkylsulfonyl group, an arylsulfonyl group, an alkylsulfonylamino group, an arylsulfonylamino group, a sulfamoyl group, an N-substituted sulfamoyl group, a cyano group, a hydroxy group, a nitro group or a halogen atom and when m represents 2 or more A may be the same or different.

Abstract: A self-processing photographic film unit includes a first sheet for recording a positive image, a transparent second sheet bonded to the first sheet in face-to-face relation, a container for a processing liquid coupled to the leading end of the film unit, and a trap coupled to the trailing end of the film unit. Following exposure of the film unit, the processing liquid is distributed uniformly between the sheets, and any excess of the processing liquid from an image-recording area of the first sheet is received in the trap. The trap comprises a bag-like trap cover having a plurality of air orifices and a trap member capable of swelling and solubilizing when in contact with the processing liquid, which is surrounded the trap cover. The trap member is made of a fibrous carboxymethylcellulose sheet or a fibrous carboxymethylcellulose sheet and filter paper bonded to each other by sandwiching a liquid impervious member therebetween.

Abstract: s-Triazine compounds which contain in their molecule at least one sterically hindered phenol group and at least one polyalkylpiperidine group are effective optical stabilizers for photographic dyes and precursors thereof.

Abstract: Photographic assemblages are described employing metallizable redox dye-releasers and a ligand having a coordinating site which is: ##STR1## In a preferred embodiment, the ligand is an alpha amino carboxylic acid, a 2-pyridinecarboxylic acid, a 2-aminoalcohol, a 2-hydroxymethylpyridine, a 2-hydroxyacetic acid, a 1,2-diamine or a 2-hydroxypyridine-N-oxide.

Abstract: In a color diffusion transfer photographic element, a novel neutralization system for reducing the pH of an alkaline processing solution comprises at least two steps wherein the first step pH of the processing solution is reduced to a range in which development and dye release reactions are substantially discontinued but in which diffusion of dyes for forming transfer images continues, and in the second step pH is further reduced and allows to reduce at a neutralization rate lower than the rate in the first step to a final pH of which the transfer image formed is stable upon storage for a long period.

Abstract: Photographic assemblages are described employing metallizable redox dye-releasers and a sequestering agent which is gluconic acid, N[CH.sub.2 --P--(O)(OH).sub.2 ].sub.3 or (HO).sub.2 P(O)--C(CH.sub.3)(OH)--P(O)(OH).sub.2.

Abstract: An image forming method which comprises (A) exposing to an imagewise pattern of light a light-sensitive material having on a support at least (1) a light-sensitive silver halide, (2) a binder, and (3) a compound which is chemically involved in the reduction of the light-sensitive silver halide to silver under high temperature thereby causing the production or the release of a mobile dye, (B) heating the light-sensitive material in a substantially water-free condition to form the mobile dye with an imagewise distribution subsequently to or simultaneously with the exposure, and (C) transferring the mobile dye into a dye-fixing layer under high temperature and fixing it thereto wherein an acidic component participates chemically in the reaction system for forming the mobile dye after the conclusion of the mobile dye-forming reaction to bring about the desirable effect on lowering the fog density thereof.

Abstract: A color diffusion transfer photographic element containing a compound having a sulfinic acid group or a slat thereof is disclosed. The element is comprised of a photosensitive element and an alkaline processing composition element. The sufinic acid group or a salt thereof includes a compound represented by the general formula (Y-SO.sub.2).sub.n M wherein M is a hydrogen atom, an alkyl metal atom, an alkaline earth metal atom, an ammonium group, or an organic base; Y is an alkyl group, a substituted alkyl group, an aryl group or a substituted aryl group, and n is 1 or 2. By utilizing the compound within the processing solution it is possible to prevent the deterioration of processing composition which occurs when the material is stored for a long period of time.

Abstract: A process for forming an image is described, comprising heating a light-sensitive material in a substantially water-free condition to form a mobile dye in an image pattern, said material having a support bearing thereon light-sensitive silver halide, a binder, and a dye-releasing redox compound capable of imagewise reducing the silver halide and releasing a hydrophilic dye on reaction with said silver halide when heated, after or simultaneously with imagewise exposure, in the presence of a compound having a melting point below 60.degree. C.

Abstract: Compounds of the formula I ##STR1## in which X is a group ##STR2## and R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are monovalent organic radicals, at least one of which contains a sterically hindered phenol group and at least one of which contains a polyalkylpiperidine group, are outstanding light stabilizers for color-photographic recording materials. They also have a stabilizing action on the photo dyes and their precursors when stored in the dark.

Abstract: A color diffusion transfer photographic element is disclosed. The element provides a transferred dye image in a mordant layer and includes a compound having recurrent units represented by the general formula (I): ##STR1## the substituents within the general formula (I) are defined within the specification. By utilizing the compound the images produced having improved preservability having specific improvements with respect to the elimination of yellow stains which are formed in white areas of the images after storage for a long period of time. Furthermore, the images formed do not deteriorate at high temperatures and the use of the compound does not decrease the D.sub.max in print images.

Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer is described, the color photographic light-sensitive material containing a coupler having at the coupling position thereof a group represented by formula (I) ##STR1## wherein Z represents an oxygen atom or a sulfur atom; R.sub.1 and R.sub.2 each represents a halogen atom, an alkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, a cyano group, a nitro group, a hydroxy group, a carboxy group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylsulfonamido group, an arylsulfonamido group, an alkylsulfamoyl group, an arylsulfamoyl group, an acylamino group, an amino group, an alkylcarbamoyl group, an arylcarbamoyl group, an alkylsulfonyl group, an arylsulfonyl group, an alkylcarbonyl group or an arylcarbonyl group; X.sub.

Abstract: A polymer comprising polymerized N-alkyl substituted acrylamide and a polymerized crosslinking monomer wherein the polymer has a solubility parameter from about 13 to 16 at 25.degree. C., is useful as a temporary barrier layer between reactants in photographic products. The barrier layer is particularly useful as a process timing layer in color image transfer film units.

Abstract: Image-receiving elements for use in photographic diffusion transfer products and processes and including a unitary image-receiving and decolorizing layer are disclosed. The unitary image-receiving and decolorizing layer comprises a mixture of gelatin, an organic monobasic or polybasic acid or anhydride and a copolymeric mordant comprising recurring units from a vinylpyridine and from a copolymerizable vinylbenzyl quaternary ammonium salt. The image-receiving elements can be used in diffusion transfer products and processes for the provision of color images which appear satisfactorily to emerge from a white background and which exhibit desirable densitometric characteristics.

Abstract: A heat-developable color photographic material is disclosed. The material is comprised of a support having thereon at least a light-sensitive silver halide, a hydrophilic binder, a dye releasing compound reductive and capable of releasing a hydrophilic dye and a compound represented by the following general formula (A): ##STR1## wherein A.sub.1, A.sub.2, A.sub.3, and A.sub.4, which may be the same or different, each represents a hydrogen atom or a substituent selected from an alkyl group, a substituted alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, a substituted aryl group and a heterocyclic group, or A.sub.1 and A.sub.2 or A.sub.3 and A.sub.4 may combine with each other to form a ring.The heat-developable color photographic material can easily provide in a short time a clear and stable color image having a high color density and low fog by imagewise exposure and heat development procedure.

Abstract: Compounds of the formula I ##STR1## in which A, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are as defined in claim 1, are effective optical stabilizers for photographic dyes and their precursors. They are added to the colorphotographic recording materials as the latter are being prepared, and, as a result, the developed images have a longer optical stability.

Abstract: In a photographic material suitable for use as image receptor element for the dye diffusion transfer process, a dyeable layer arranged on a layer support contains nickel chelates of a 2,2'-bisphenol corresponding to one of the general formulae I and II as metallizing agents for the formation of colored complexes of organic colorless or colored complex formers. The chelatizable image dyes which are transferred image-wise into the dye absorbent layer in the process of development give rise to the corresponding nickel complexes which have improved light stability. ##STR1## X=S, ##STR2## or --SO.sub.2 --; R.sup.1 =a hydrocarbon group optionally attached through --O-- or a halogen or R.sup.4 ;R.sup.2 =hydrogen, halogen, alkyl or alkoxy, alkenyl a condensed benzene ring or R.sup.4 if R.sup.1 does not denote a group R.sup.4 ;R.sup.3 =R.sup.2 or ##STR3## R.sup.4 =--CO--O--R.sup.5, ##STR4## --NH--CO--R.sup.2 or --NH--SO.sub.2 --R.sup.9 ; R.sup.5 =alkyl, aralkyl or cycloalkyl;R.sup.6, R.sup.

Abstract: Photographic assemblages, elements, receiving elements and cover sheets are described employing a single neutralizing-timing layer consisting essentially of a carboxy-ester-lactone polymer having the following recurring units: ##STR1## wherein R is alkyl having from 1 to about 12 carbon atoms or aralkyl having from 7 to about 12 carbon atoms;R.sup.1 and R.sup.2 are each independently hydrogen or methyl;x is about 1 to about 15 mole %; andy is about 85 to about 99 mole %.

Abstract: Image transfer photographic assemblages, processes, compositions and cover sheets are described which employ a manganous compound. After processing, the manganous compound is capable of diffusing to the silver halide emulsion layer and a redox dye-releaser associated therewith to inhibit further dye release. Post-process D.sub.min stability is thereby improved.

Abstract: A loaded polymer latex composition is disclosed. The composition comprises an aqueous polymer latex whose dispersed phase is made up of a specified cross-linked quaternary salt polymer loaded with a specified hydrophobic substance. The latex composition can be advantageously employed as a mordant polymer in a photographic element for a color diffusion transfer process. Use of the latex improves light resistance without lowering the maximum densities of the film images.

Abstract: Photographic assemblages, elements, receiving elements and cover sheets are described employing a single neutralizing-timing layer consisting essentially of a carboxy-ester-lactone polymer having the following recurring units: ##STR1## wherein R is alkyl having from 1 to about 12 carbon atoms or aralkyl having from 7 to about 12 carbon atoms;R.sup.1 and R.sup.2 are each independently hydrogen or methyl;x is about 1 to about 15 mole %; andy is about 85 to about 99 mole %.

Abstract: Photographic assemblages, elements, receiving elements and cover sheets are described employing a novel neutralizing layer comprising a cross-linked polymer having recurring units of an N-(alkoxy-methyl)acrylamide, an acrylic acid and an alkyl acrylic ester. The need for a separate cross-linking agent is eliminated.

Abstract: A photographic print prepared by a color diffusion transfer process comprising at least a support, a mordant layer containing therein a diffusion transfer dye image, and a white reflection layer constituting the background of the dye image and containing therein at least one compound represented by formula (I): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 may be the same or different and each represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an aralkyloxy group, an alkenyl group, an alkenyloxy group, an alkylthio group, an arylthio group, an acyl group, an acylamino group, a diacylamino group, an alkylamino group, a sulfonamido group, an acyloxy group, an alkoxycarbonyl group, or an aryloxycarbonyl group, and A represents a non-metallic atom group necessary for forming a 5- or 6-membered ring.

Abstract: Adhesive compositions are disclosed which are particularly useful as mask adhesives in instant photographic products. These adhesives provide high strength permanent bonds while greatly improving border quality around image areas after imagewise exposure and development. These adhesive compositions comprise a polymeric acidic component having at least 3 milliequivalents of acid per gram of polymer, and a substantially immobile, blocked photographic development restrainer or a substantially immobile, blocked competing photographic developer.

Abstract: Photographic elements, diffusion transfer assemblages and processes are described which employ redox dye-releasing materials and a zinc salt, such as zinc oxide, in such a form, location and concentration that it will be diffusible in the element during processing, and the dye which is released from the redox dye-releasing material during processing will have an increased stability to light exposure. The zinc salts may be incorporated in the photosensitive portion of a photosensitive element, a processing composition or a cover sheet.

Abstract: Photographic assemblages, elements, receiving elements and cover sheets comprise a combination of two timing layers and two neutralizing layers for use with negative-working silver halide emulsions and positive-working redox dye-releasers. The outermost timing layer has a negative temperature coefficient while the innermost timing layer has either a positive or negative temperature coefficient and has a penetration time by alkaline processing composition that is greater than the penetration time of the outermost timing layer. An auxiliary neutralizing layer is located between the two timing layers. Dye release is restricted more at low temperatures than at high temperatures so that the temperature latitude of the system is thereby increased.

Abstract: Elements for use in a photographic diffusion transfer process comprising a sheet-like support having a polymeric acid neutralizing layer bonded thereto, wherein said polymeric acid layer is formed from a composition including a crosslinking agent that effects temporary crosslinks within said polymeric layer to promote resistance to aqueous interference during film unit assembly, but which readily hydrolyze under processing conditions so as to accommodate swelling of the polymeric layer in the presence of alkali processing composition.

Abstract: Photographic assemblages, elements, receiving elements and cover sheets are described employing a neutralizing layer comprising about 75 to about 150 meq. of acid/m.sup.2 of element for neutralizing an alkaline processing composition. The neutralizing layer, timing layer or layer adjacent thereto also contains about 1 to about 10 meq./m.sup.2 of oxalic acid, or an acid salt thereof, to minimize sensitometric changes that occur with keeping.

Abstract: A dye image stabilization process for color photographic sensitive elements which comprises processing a color photographic sensitive element containing at least one dye image stabilizer precursor with a solution containing divalent ions of at least one metal selected from Cu, Co, Ni, Pd and Pt is disclosed. Light fastness of dye images is thus improved.

Abstract: Inclusion of a stabilizer selected from phenyl and naphthyl esters of benzene and naphthalene carboxylic acids and mixtures thereof in an article, e.g. a photographic element, comprising an organic dye or precursor thereof increases stability of the dye against ultraviolet radiation. Particularly good results are achieved when the stabilizer is dispersed in a polymer of relatively high solubility parameter and low crystallinity.

Abstract: A method is described for stabilizing organic substrate materials having an absorption maximum in the range of from about 300 nm to 800 nm to light which comprises making at least one complex represented by the formula (I) coexist with the organic substrate materials in an amount effective to stabilize said organic substrate material: ##STR1## wherein M represents copper, cobalt, nickel, palladium or platinum, and R.sup.1 and R.sup.2 independently represent a hydrogen atom, an alkyl group, an aryl group, an acyl group, an N-alkylcarbamoyl group, an N-arylcarbamoyl group, or an N-alkylsulfamoyl group, an N-arylsulfamoyl group, an alkoxycarbonyl group or an aryloxycarbonyl group.

Abstract: Two-sheet diffusion transfer assemblages and photographic elements are described which contain a primer layer located between a polymeric acid layer and a timing layer. The primer layer prevents unwanted transfer of portions of the emulsion layer to the receiver when the receiver and photographic element are peeled apart. The primer layer comprises:(a) a mixture of gelatin and cellulose nitrate, or(b) a mixture of an acrylic acid copolymer and a particular acrylic acid terpolymer, or(c) an acrylic acid copolymer as described herein.

Abstract: Diffusion transfer films and processes are disclosed wherein the processing composition includes a light-reflecting pigment and an optical filter agent, and the image-receiving layer carries over it a layer containing a substantially non-diffusible agent adapted to decolorize optical filter agent immediately adjacent the interface between said processing composition and said decolorizing layer.

Abstract: Integral diffusion transfer photographic film unit is described, comprising at least two support layers, at least one of which is transparent, having laminated therebetween at least one silver halide emulsion layer in association with a dye-image-providing material and an image-receiving layer, and a processing composition to be distributed between the two support layers, wherein at least one marginal portion of the integral film unit is masked by a masking material having formed on at least one surface thereof a pressure-sensitive or heat-sensitive adhesive layer containing an acid or an acid-releasing material.

Abstract: A light reflecting layer for a color diffusion transfer photographic system which comprises at least one compound represented by the general formula (I): ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 9 carbon atoms, R.sub.2 represents an alkyl group having 1 to 5 carbon atoms, and R.sub.3 represents an alkyl group having 1 to 9 carbon atoms or a benzyl group which may be substituted at the .alpha.-position.

Abstract: A photographic film unit for the production of colored transfer images contains an integral neutralization system consisting of an acid polymer layer and a retarding layer. The acid polymer layer consists of a copolymer of 5 to 50 % by weight of polymerized carboxyalkyl (meth)acrylate units together with other acid monomers and optionally nonacid monomers. A preferred carboxyalkyl (meth)acrylate is the dimeric acrylic acid. The acid polymer has high acid number and low glass transition temperature.

Abstract: A silver halide emulsion containing an image dye-forming substance and a hydroquinone compound containing at least one electron attracting group as a color fog inhibiting agent.