Abstract: An aqueous alkaline processing liquid suitable for use in the silver complex diffusion transfer reversal (DTR-) process, wherein wherein said liquid contains a mixture of alkanolamines, the said mixture consisting of (I) N-methyl-diethanolamine and of (II) N,N-dimethyl-ethanolamine in a total amount in the range from 0.3 mol/l to 1.5 mol/l, and in a molar ratio of (I) to (II) from 1/20 to 20/1.

Abstract: An aqueous alkaline processing liquid suitable for use in the silver complex diffusion transfer reversal (DTR-) process, wherein said liquid contains one or more alkanolamines, the said alkanolamine(s) consisting of one or more tertiary alkanolamines in an amount in the range from 0.3 mol to 1.5 mol/l, and one or more secondary alkanolamines in an amount from 0 mol % to 5 mol % with respect to the amount of tertiary alkanolamine(s), and said liquid also contains a mixture of a silver image toning agent A being 1-phenyl-1H-tetrazole-5-thiol or a tautomer thereof and at least one other silver image toning agent B being a 1-phenyl-1H-tetrazole-5-thiol or a tautomer thereof, wherein the phenyl nucleus is substituted with halogen, the toning agent A and toning agent(s) B being present in said liquid in a molar ratio from 1/15 to 15/1.

Abstract: A method for forming an image by silver salt diffusion transfer is described, comprises processing an imagewise exposed photosensitive element provided with a layer of photosensitive silver halide emulsion on a support, and an image-receiving element provided with an image-receiving layer containing a silver-precipitating agent on a support, with an alkali processing composition in the presence of a silver halide solvent, to convert at least part of the unexposed silver halide in the emulsion layer into a transferable silver complex salt, to transfer at least part of said complex salt into the image-receiving layer, and to form an image in the image-receiving layer; the processing being carried out in the presence of at least one compound as described.

Abstract: The present invention provides a developer for making a lithographic printing plate by silver complex diffusion transfer process which contains a hydroxyaryl fatty acid. This hydroxyaryl fatty acid preferably has the formula: ##STR1## wherein R.sub.1 represents a straight chain alkyl group of 1-19 carbon atoms and R.sub.2 represents a straight chain alkylene group of 1-19 carbon atoms with a proviso that sum of carbon atoms of R.sub.1 and R.sub.2 is 10-20 and R.sub.3 and R.sub.4 each represents a hydrogen atom, a hydroxyl group or an alkyl or alkoxy group of 1-9 carbon atoms.

Abstract: An aqueous alkaline processing liquid suitable for use in the silver complex diffusion transfer (DTR-) process, wherein said liquid contains one or more alkanolamines, the said alkanolamine(s) consisting of one or more tertiary alkanolamines in an amount in the range from 0.15 mol to 1.5 mol/l, and one or more secondary alkanolamines in an amount higher than 5 mol % but not higher than 100 mol % with respect to the amount of tertiary alkanolamine(s), and said liquid also contains a mixture of a silver image toning agent A being 1-phenyl-1H-tetrazole-5-thiol or a tautomer thereof and at least one other silver image toning agent B being a 1-phenyl-1H-tetrazole-5-thiol or a tautomer thereof, wherein the phenyl nucleus is substituted with halogen, the toning agent A and toning agent(s) B being present in said liquid in a molar ratio from 1/15 to 15/1.

Abstract: Disclosed is a silver complex diffusion transfer process which comprises processing a photosensitve material comprising a support and at least a silver halide emulsion layer provided thereon and an image receiving material comprising a support and at least an image receiving layer provided thereon which are brought into close contact with each other in a developing processing solution. This process is characterized in that said image receiving layer has 1-3 g/m.sup.2 of a hydrophilic colloid at least 80% by weight of which is gelatin; total amount of hydrophilic colloid present on the emulsion layer side of the photosensitive material is 5-8 g/m.sup.2 ; when the materials are immersed in a 0.1N aqueous sodium hydroxide solution at 20.degree. C. for 1 minute, amount of absorbed solution per 1 g of hydrophilic colloid is 3.

Abstract: Process for the production of a laminated article including a sheet support bearing a silver image produced by the silver complex diffusion transfer process in a layer containing developement nuclei, wherein such supported image is heat-laminated with a protective thermoplastic resin layer of sheet that covers it. The heat-lamination of the nuclei-containing layer with the silver image therein takes place in the presence of at least one of certain heterocyclic black-toning agents which are effective to prevent degradation of the neutral black coloration and density loss of the silver image as a result of heat-lamination.

Abstract: A non-light-sensitive image-receiving element useful in a silver complex diffusion transfer process includes at least one layer containing certain S-thiuronium alkyl sulfonates which act as tone controlling agents that accelerate the physical development of silver.

Abstract: A process is described for defined etching of holes using a sliver mask formed by silver diffusion transfer imaging.

Abstract: A non-light-sensitive image-receiving element useful in a silver complex diffusion transfer process includes at least one layer containing certain tone controlling agents that accelerate the physical development of silver. Compounds useful for this purpose are alkyl disulfides substituted by a water solubilizing group, thiazolidine carboxylic acids, .gamma.-thiobutyrolactones, higher alkyl thioglycolates, and carboxy-substituted rhodanines.

Abstract: A method of forming images by silver salt diffusion transfer in which a photosensitive element which contains an imagewise exposed photosensitive silver halide emulsion layer is developed in the presence of a silver halide solvent using an alkaline processing composition, wherein at least part of the unexposed silver halide of the emulsion layer is formed into a transferable silver complex salt, at least part of the transferable silver complex salt is transferred to an image receiving layer to yield an image in the image receiving layer, wherein non-photosensitive silver precipitation nuclei are included in the photosensitive element. It is possible to obtain images without metallic luster in a stable manner.

Abstract: A method for processing an imagewise exposed photographic silver halide emulsion material using a receptor element for complexed silver halide which element contains a stabilizing agent corresponding to one of the following general formulae (I) or (II), tautomeric structures or a precursor form thereof: ##STR1## wherein: X represents hydrogen, alkali metal, ammonium or organic amine,Z represents the non-metallic atoms necessary to form a 5- or 6-membered heterocyclic nucleus, andeach of R.sup.1 and R.sup.2 (same or different) represents hydrogen, amino, alkyl, alkenyl, cycloalkyl, aryl, alkoxy, alkylthio, alkylsulfonyl, sulfamoyl, acyl, --SH or a heterocyclic group.

Abstract: A light-sensitive transfer material is disclosed, comprising a substantially transparent support having provided on one side thereof, in order from the support, a stripping layer, and a lamination of a colorant layer containing a dye or a pigment and a photoresist layer or a photoresist layer containing a dye or a pigment, and having provided on the other side thereof a physical development nuclei-containing layer adapted for diffusion transfer processing using a silver halide emulsion.

Abstract: A method of forming an image by silver salt diffusion transfer comprising (a) developing a light-sensitive element including an imagewise exposed light-sensitive silver halide emulsion layer with an alkali processing solution comprising a silver halide solvent to convert at least a portion of unexposed silver halide in the emulsion layer into a transferable silver complex salt, and (b) transferring at least a portion of the silver complex salt to an image-receiving element containing a silver precipitating agent to form an image on the image-receiving layer, wherein the processing is carried out in the presence of an organic phosphonic acid compound.

Abstract: Method for making images by image-wise exposing a silver halide emulsion layer, developing it with an alkaline processing solution in the presence of a silver halide solvent, development nuclei, and a density- and tone-controlling compound, transferring silver complexes from the emulsion layer to a non-light-sensitive image-receiving layer and forming an image therein, said density- and tone-controlling compound being contained in said image-receiving layer and/or in said processing solution and corresponding to the general formula: ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 (same or different) represent hydrogen, C.sub.1 -C.sub.8 alkyl, or Alk.sub.1 --X--Alk.sub.2 --Y--; Alk.sub.1 is (substituted) C.sub.1 -C.sub.8 alkyl; X is --O-- or --S--; Alk.sub.2 is (substituted) C.sub.1 -C.sub.8 alkylene; Y is a single bond, --O--, --S--, --CONH--, --SO.sub.2 NH--, or --NHCONH--; R.sup.3 can alternatively represent (substituted) C.sub.1 -C.sub.8 alkylthio; at least one of R.sup.1, R.sup.2, and R.sup.

Abstract: This invention provides a method for deleting images formed on offset printing plates which comprises treating the surface of undesired portion of the images formed by exposure and development with a deletion fluid which contains a ferric complex salt of an organic acid and 0.3 mol/liter or more of at least one compound selected from the group consisting of a soluble bromide and a soluble iodide. Preferred ferric complex salt is a ferric complex salt of aminopolycarboxylic acid.

Abstract: Method of making a personal identification document exhibiting textual data and a portrait of the person, characterized in that it comprises the steps of forming a monochrome photographic textual image in a monochrome photographic silver halide material, forming a color photographic portrait image in a color photographic silver halide material, producing from these images corresponding monochrome and colored diffusion transfer images in image-receiving layers on opposite sides of a common receptor sheet, said receptor sheet, which bears the resulting diffusion transfer images, constituting a said personal identification document. The invention also provides a receptor sheet for use in such method.

Abstract: A method for forming an image with diffusion transfer of silver salts comprising processing a photosensitive element in the presence of a fogging agent.

Abstract: Photographically produced black-and-white images (silver images) are stabilized against subsequent destruction of the silver image, in particular against the occurrence of so-called microspot defects, by treatment of the finished silver image with an aqueous after-treatment bath containing an amino-1,2,4-triazole.

Abstract: A light-sensitive element for the silver salt diffusion transfer method is described, comprising a support bearing thereon at least a light-sensitive silver halide emulsion layer containing silver iodide, wherein at least one layer for trapping on iodide ion is provided between the support and the emulsion layer. This light-sensitive element provides a silver image which is improved in fading and discoloration during storage.

Abstract: A photographic material for the production of continuous tone silver images by the diffusion transfer reversal process using at least two independently prepared silver halide emulsions of different photo-sensitivity and having a silver halide composition as defined in the description, either in admixture in a single supported emulsion layer or coated on the same support as separate superposed emulsion layers.

Abstract: A method of forming a silver salt diffusion transfer image comprises developing an imagewise exposed photosensitive silver halide emulsion layer with a developing agent and a silver halide solvent in the presence of an alkali to thereby convert at least a portion of unexpected silver halide in said emulsion layer to a diffusible silver complex salt and transferring at least a portion of said silver complex salt into a silver precipitating agent-containing image receivin- layer to form an image in said image receiving layer.

Abstract: Disclosed is a process for forming a colored photographic image, wherein a photographic material bearing a silver image is subjected to an etching-bleach treatment and the unbleached areas are colored with a coloring solution to form a colored image, which comprises before or/and after said etching-bleach treatment coloring said photographic material with a coloring solution containing at least a water-soluble dye and a glycol ether. Thus obtained colored image may be further transferred to another substrate material.

Abstract: A method for image formation by a diffusion transfer process including developing an imagewise light-exposed light-sensitive silver halide emulsion layer in the presence of a developing agent, a silver halide solvent and an alkali, wherein at least two cyclic imide compounds represented by the formula: ##STR1## wherein Z represents an atomic group necessary to form a 5- or 6-membered imido ring containing from 1 to 3 nitrogen atoms, are used as the silver halide solvent is disclosed. Images obtained by the method are stable during storage over a long period of time.

Abstract: An image-receiving element for a silver salt diffusion transfer process is disclosed, wherein the element comprises an image stabilizing agent precursor having an inactive group capable of being removed upon contact with an alkaline processing composition.

Abstract: A method of developing silver halide photographic material which contains a light-sensitive silver halide emulsion and an internally-fogged silver halide emulsion, in which the internally-fogged emulsion has internal fogging nuclei at a depth of 0.02.mu. or more below the surface of the grains is disclosed. The photographic material is developed in the presence of at least one compound selected from the group consisting of tetraazaindenes containing at least one mercapto group, purines containing at least one mercapto group, triazaindenes containing at least one mercapto group and pentaazaindenes containing at least one mercapto group, to increase photographic speed, contrast and maximum density as well as remove uneven stain.

Abstract: A photosensitive element comprising a support carrying a layer of photosensitive silver halide grains and a barrier polymer, said barrier polymer having a limited swell ratio in alkali; said barrier polymer being disposed substantially intermediate said silver halide grains and overlying said silver halide grains. In a preferred embodiment, the silver halide layer is a planar, spaced array of silver halide grains.

Abstract: In a process of forming an image by silver salt diffusion transfer comprising using a processing composition containing an alkali, a hydroxylamine developing agent, and a silver halide solvent, this process of forming an image comprises performing the diffusion transfer in the presence of a compound represented by the general formula: ##STR1## or both this compound and a compound represented by the general formula: ##STR2##

Abstract: A photographic element for a silver salt diffusion transfer process is described, comprising a silver halide light-sensitive element, an image receiving element and a processing element, the improvement wherein said photographic element contains a compound represented by formula (I) or (II) ##STR1## wherein the R.sub.

Abstract: A silver diffusion transfer film unit comprising photosensitive silver halide, silver precipitating nuclei, a stabilizing compound of the formulaXS(CH.sub.2).sub.n COORwherein X is a noble metal below silver in the Electromotive Series of Elements, n is 1, 2 or 3 and R is an alkyl or substituted alkyl group; and a compound of the formulaH.sub.x S.sub.y [(CH.sub.2).sub.b COOZ].sub.mwherein Z is hydrogen or alkyl, b is 1, 2 or 3, m=1 or 2, x=1 or 0 and y=1 or 2; when y=2, m=2 and x=0 and when y=1, m=1 and x=1.

Abstract: Disclosed are a developer for silver complex diffusion transfer process which contains a nitrogen-containing heterocyclic compound having a mercapto or thione group and, as substituent, an alkyl group of 4 or more carbon atoms, an aryl group, or a group having both the alkyl and aryl groups and further contains an alkali-soluble iodide in an amount such that the molar ratio of the iodide in terms of iodine to the heterocyclic compound is in the range of from 1:5 to 5:1 and a silver complex diffusion transfer process using said developer, according to which transferred silver images of improved color tone, maximum density, contrast and sharpness can be obtained.

Abstract: A process for the production of a sealed laminate especially a security document comprising a support sheet, an image layer containing a photographic image present in a hardened hydrophilic diffusion transfer reversal image-receiving colloid medium made from an image receiving layer containing photosensitive iron(III) compound, and a protective cover sheet is described wherein:(1) the support sheet is of a polymeric heat meltable material,(2) the image layer is disposed adherently on the support sheet to cover the support area only partly and to leave uncovered at least one edge area thereof,(3) the protective sheet is of a heat-meltable material which in the melted state is capable of forming a homogeneous mass with melted support sheet material, and(4) the protective cover sheet is heat sealed to the support sheet in the uncovered areas thereof to form the homogeneous mass, whereby said image layer is sealed between the support sheet and the protective sheet.

Abstract: Photographic silver halide material suitable for use in the silver complex diffusion transfer reversal process for the production of a continuous tone positive silver image (sensitometric curve I of the drawing) on an image-receiving material and a continuous tone negative silver image (sensitometric curve II of the drawing) in the photographic silver halide material itself, wherein the negative silver image is usable per se for serving as an internegative in a photographic printing process. In the photographic material on each side of a transparent support a silver halide emulsion layer high in silver chloride is present with a different developing agent composition to yield from the two emulsion layers together the total silver image density and average gradient desired in the negative image.

Abstract: A diffusion transfer film unit comprising a support, a photosensitive silver halide emulsion layer, an image-receiving layer and, intermediate said silver halide emulsion layer and said image-receiving layer, a release layer which comprises a water-soluble polymer and a styrenated acid functional acrylic resin. In a preferred embodiment, the film unit is a silver diffusion transfer film unit.

Abstract: A stripping sheet adapted for use with a diffusion transfer film unit to remove at least the photosensitive layer from said film unit subsequent to processing is disclosed, as well as methods for using said stripping sheet, wherein said stripping sheet comprises a support, carrying in order, a water-absorbing layer, and a layer capable of conversion from substantial liquid processing composition impermeability to a condition of substantial liquid processing composition permeability.

Abstract: Process for the production of a reverse reading positive line and/or halftone image suited for use in the production of a lithographic offset printing plate, said process comprising the steps of:(1) photo-exposing a photographic negative working silver halide emulsion material comprising a negative working silver halide emulsion layer on a transparent film support and an anti-halation layer either between the emulsion layer and the film support or at the side of said support opposite the emulsion layer, the exposure of the emulsion layer occurring through the support and the anti-halation layer in a camera without a reversing optical system,(2) bringing the emulsion layer side of the photographic material into contact with an image-receiving material to form by diffusion transfer processing a visible silver image upon the latter, and(3) separating the photographic material from the image-receiving material.

Abstract: A processing composition adapted for use in a silver diffusion transfer process which includes a saturated polyol containing at least 3 hydroxyl groups wherein each hydroxyl group is no more than 3 carbon atoms away from another hydroxyl group.

Abstract: A lithographic type diffusion transfer developing composition which provides high contrast images having sharp toe-gradation for developing silver halide light-sensitive materials contains at least one amine represented by one of the following general formulae (I), (II) or (III):H.sub.2 N-C.sub.n H.sub.2n -X (I) ##STR1## X, X', R.sub.1, n and m are defined in the specification. The process of developing using such a composition is also disclosed.

Abstract: A novel photographic film unit, preferably a diffusion transfer film unit adapted to provide silver images of enhanced image stability which comprises photosensitive silver halide, silver precipitating nuclei and a stabilizing compound consisting of a noble metal complexed with a ligand, said ligand being adapted to hydrolyze in aqueous alkali to provide a diffusible complex of said noble metal.

Abstract: Novel 3,3-disubstituted acylhydrazinophenylthiourea nucleating agents are disclosed as well as silver halide photographic emulsions and elements containing silver halide grains capable of forming an internal latent image having the nucleating agents adsorbed to the surface of the silver halide grains. Imaging processes in which these materials participate are also disclosed.

Abstract: A photographic material suited for use in the silver complex diffusion transfer process and comprising at least one water-permeable layer and including a hydrophilic colloid silver halide emulsion layer in which the silver halide comprises a mixture of silver chloride and silver iodide and/or silver bromide, at least 90 mole % based on the total molar weight of the silver halide being silver chloride, and the ratio by weight of hydrophilic colloid to silver halide expressed as silver nitrate is between about 3:1 and about 10:1, wherein said at least one of the water-permeable layers contains a mixture of developing agents comprising an o-dihydroxybenzene and a 3-pyrazolidinone, the molar amount of the o-dihydroxybenzene in the mixture being larger than the molar amount of the 3-pyrazolidinone.

Abstract: A photographic process and article resulting therefrom which utilizes multiple images that are transferred to a single image receiving surface. In the preferred embodiment the images are formed on the receiving surface by diffusion transfer development and each image on the receiving surface is electrically conductive. In the areas in which the images overlap, the electrical resistivity is lower than in the nonoverlapped areas. Electrical resistivity in a given area can be controlled by the number of images transferred to the receiving surface. One application of the process is the formation of electrical components such as, printed circuit boards, by photographic diffusion transfer development.