Abstract: An image-receiving material adapted for silver complex diffusion transfer processing and for forming a laminate, e.g. serving as an identification document, wherein said material comprises a hydrophobic resin support or resin-coated paper support directly coated on a resin surface thereof with a DTR-image receiving layer containing developing nuclei in a binder medium and comprising in percent by weight on its total weight the following ingredients:2% to 45% of gelatin,25% to 85% of colloidal silica,1.0% to 50% of a copolymer consisting of copolymerized ethylene and an alpha,beta-unsaturated carboxylic acid monomer in free acid or salt form, wherein the polymerized ethylene content is not lower than 80% by weight, and0.2% to 35% of a siloxane forming a reaction product through its siloxane group with the colloidal silica, the dry coverage of the image-receiving layer being in the range of 1 g to 15 g per m2.

Abstract: A photographic image receiving element for a silver salt diffusion transfer process which comprises a hydrolyzable first alkali impermeable polymer layer applied on a base and an image receiving layer thereon comprising a hydrolyzable second alkali impermeable polymer layer containing silver precipitation nuclei which is prepared by hydrolyzing at least a part of the hydrolyzable second alkali impermeable polymer layer so as to be alkali permeable, the improvement wherein at least one hydrophilic copolymer layer containing at least one of gum arabic and arabic acid is coated between said first alkali impermeable polymer layer and said image receiving layer, and said first alkali impermeable polymer layer contains at least one compound represented by formula (I) or formula (II) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.

Abstract: The adherence of a hydrophilic layer containing a hydrophilic colloid binder upon the surface of a vinyl chloride polymer free of hydrophilic recurring units is improved by exposing the polymer surface to a corona discharge sufficient to satisfy a particular wetting test described in the specification, and colloidal silica is dispersed within the hydrophilic layer in a weight ratio range relative to the binder of 1:5-2:1.

Abstract: Process for the production of a planographic printing plate by means of the silver complex diffusion transfer reversal process comprising the steps of:image-wise photo-exposing a silver halide emulsion layer; developing the resultant latent image in the presence of a silver halide complexing agent and contacting the exposed silver halide emulsion layer with an anodized aluminium platecharacterized in that the thickness of the anodized surface layer is in the range of 0.50 to 2.00 .mu.m, the anodized plate before contact of the same with the emulsion has been hydration-sealed in the temperature range of 60.degree.-80.degree. C., and the development of the light-sensitive material is carried out with a developing composition having a pH of at least 12, and containing:dissolved sulphite,dissolved thiosulphate, anda mixture of hydroquinone and at least one secondary developing agent of the class of 1-phenyl-3-pyrazolidinones and p-N-methylaminophenol.

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 materials and photographic processes employing light sensitive silver halide particles, silver halide particles which are substantially non-light sensitive having been modified with a silver halide solubility reducing agent and internally fogged silver halide particles which are substantially non-light sensitive provide negative silver images of high contrast and high maximum density.

Abstract: A silver diffusion transfer film unit which comprises, in order, a support, a silver precipitating layer, a protective layer comprising chitosan having a copper salt and a polyol selected from the group consisting of glycerol, sorbitol, polyvinyl alcohol, inositol, ethylene glycol, propylene glycol and hydroxyethyl cellulose disposed therein, a release layer, and a photosensitive silver halide layer. In a particularly preferred embodiment, the film unit is an additive color diffusion transfer film unit.

Abstract: A silver diffusion transfer film unit which comprises, in order, a support carrying a silver precipitating layer, a protective layer comprising chitosan having a copper salt and gelatin disposed therein, a release layer and a photosensitive silver halide layer. In a particularly preferred embodiment, the film unit is an additive color diffusion transfer film unit.

Abstract: An image receptor element for the dye diffusion transfer process contains an image-receiving layer, which has increasing dye absorption capacity with increasing distance from the light-sensitive layers. Such an image-receiving layer may be obtained by use of mordants in concentrations which increase with increasing distance from the light-sensitive layers or by use of at least two mordants of different dye absorption capacity, the mordant of higher dye absorption capacity being arranged in a partial layer of the image-receiving layer further away from the light-sensitive layers. Such image receptor elements provide higher dye densities with lower total concentrations of mordants.

Abstract: Transfer images of high contrast, high density and high sharpness can be obtained by DTR process wherein all of the physical development nucleus particles are covered with a water permeable colloid having a thickness of at least 10 times the average diameter of the nucleus particles and all of the physical development nucleus particles are substantially two-dimensionally distributed at such intervals as capable of forming a continuous transfer developed silver.

Abstract: Photographic elements, multicolor filters and receivers are disclosed having supports providing microvessels for materials such as radiation-sensitive materials, imaging materials, mordants, silver precipitating agents and materials which are useful in conjunction with these materials. Processes of forming microvessels and introducing materials therein are also disclosed. Processes of forming images are disclosed employing microvessel containing elements. Image transfer processes are disclosed for producing one or a combination of silver and multicolor subtractive primary images alone or in combination with multicolor additive primary images.

Abstract: A receiving element for use in an additive color photographic diffusion transfer process which comprises a transparent support carrying an additive color screen and a layer comprising noble metal silver precipitating nuclei and a polymer; wherein said nuclei are present in a level of about 0.1-0.3 mgs/ft.sup.2, and said polymer is present at a level of from about 0.5 to 5 times the coverage of said nuclei. Preferably, the noble metal is obtained by reduction of a noble metal salt or complex, and more preferably, the noble metal is palladium.

Abstract: A method of replicating data from a master transmissive optical data storage medium whereby the resulting product displays areas of low reflectivity and high reflectivity. Actinic radiation is shone through transmissive areas onto a silver-halide emulsion photosensitive medium. The photosensitive medium is then chemically developed black. Next, the developed medium is fogged to create a latent image layer of silver precipitating nuclei. Finally, the fogged medium is placed in a monobath comprising a weak silver-halide reducing agent and a rapid-acting silver-halide solvent for partial chemical development and substantial physical development. The resulting product displays areas of low reflectivity, which correspond to the transmissive areas of the master, in a reflective field.

Abstract: The negative materials of this invention for silver complex diffusion transfer process provide silver images high in density and improved in stability on image receiving materials. Said negative materials have the following characteristics:(a) The negative materials have silver halide emulsion layer in which the weight ratio of hydrophilic colloid to silver halide in terms of silver nitrate is 2 or less and(b) furthermore, the negative materials have an undercoat layer of hydrophilic colloid on a support and the silver halide emulsion layer of (a) on said undercoat layer, the weight ratio of the hydrophilic colloid of said undercoat layer to that of said silver halide emulsion layer being at least 2.

Abstract: Receptor material adapted for use in a combined dye transfer and silver complex diffusion transfer process, comprising in order:(i) a support,(ii) a first hydrophilic colloid layer containing a cationic compound capable of mordanting an acid dye, and(iii) a transparent second hydrophilic colloid layer containing development nuclei for catalyzing the reduction therein of silver complex salts to silver and at least one organic compound having an anionic group linked to a carbon atom. The use of the receptor material for the production of a black-and-white silver image in combination with one or more dye images results in silver images of increased density.

Abstract: Silver-precipitating nuclei are prepared by partially oxidizing a stannous salt reducing agent with potassium, sodium or ammonium dichromate and then reducing a noble metal salt or complex with said reducing agent.

Abstract: Silver-precipitating nuclei are prepared by partially oxidizing a stannous salt reducing agent with a ferric oxidizing agent and then reducing a noble metal salt or complex with said reducing agent.

Abstract: A recorded disk preproducing system in which a signal pattern recorded on a master disk is transferred to a reproducing disk positioned in close contact with the master disk upon exposure to flashing light. The master disk includes a thin film of a light screening material such as in organic compound, chalcogen compound, or the like formed on a transparent glass substrate, and an information signal is recorded on the thin film as a pattern of varied light transmission. The reproducing disk has a thin film of a heat sensitive material such as amorphous chalcogen compound formed on a transparent resin substrate, and the optical density and/or a light reflectance of the heat sensitive thin film is varied in accordance with the recorded signal pattern of the master disk upon exposure to the flashing light.

Abstract: A process for producing a photographic material, which comprises dispersing, in a solution of an organic resin, a material which is incompatible with the organic resin to form a dispersion, coating the resulting dispersion on at least one side of a support to form a coated layer, and then drying the coated layer, the material dispersed being a solid at ordinary temperature and in a liquid phase during the dispersing, whereby the coated layer when dried contains solid particles dispersed therein due to solidification of the dispersed material.The present invention also provides a photographic material obtained by the above process.

Abstract: A silver diffusion transfer film unit comprising a transparent support carrying on one surface, in order, a layer comprising silver precipitating nuclei, a photosensitive silver halide emulsion layer and a layer comprising a processing composition permeable polymer layer, a substantially photoinsensitive, water-insoluble inorganic silver salt and a substantially water-insoluble noble metal compound containing a noble metal below silver in the Electromotive Force Series of Elements. In a preferred embodiment the film unit includes an additive color screen.

Abstract: Disclosed are tellurium (IV) compounds represented by the formula: ##STR1## wherein: D is a Lewis base function containing a group VA or VIA donor atom;Q represents the atoms necessary to complete a 5- or 6-membered ring, when taken together with C, D and Te, when m is 1 and represents the atoms linking C and D when m is greater than 1;R.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, alkyl and aryl;X is an anion;n is 1 or 2; andm is an integer from 1 to 500.These compounds are useful in an image-forming combination comprising the described Te(IV) compound and a reducing agent. The image-forming combination is useful in a variety of materials, including a dry amplification element.

Abstract: A printing plate having an improved durability which has a support having an oleophilic surface and a hydrophilic diffusion transfer image-receiving layer containing nucleus substance for the physical development and having between the oleophilic and hydrophilic layers at least one of gelatin or nitrocellulose.

Abstract: This invention is directed to a film unit composed of a support carrying on one side a processing composition permeable layer containing an acid reacting reagent therein, and, on the other side, silver precipitating nuclei and photosensitive silver halide crystals. The above film unit is particularly suitable for use as motion picture film, i.e., in the form of an elongated web wherein said film unit is unwound, exposed, contacted with a photographic processing composition containing, e.g., a silver halide developing agent and silver halide solvent, rolling said film unit upon itself thereby contacting the processing composition permeable layer with the layers on the opposite side of the support. The acid reacting agent will diffuse into the silver halide and nuclei containing layers providing enhanced stability to the film unit.

Abstract: A receiving element for use in a photographic silver diffusion transfer process which comprises a transparent support carrying a layer comprising gelatin, polyvinyl alcohol and noble metal silver-precipitating nuclei; wherein said nuclei are present in a level of from about 0.1-0.4 mgs/ft.sup.2, gelatin is present at a level of from about 0.05 to 1.5 mgs/ft.sup.2 and polyvinyl alcohol is present at a level of about 0.1 to 5 mgs/ft.sup.2. Preferably, the noble metal is palladium. The receiving element is particularly useful in an additive color diffusion transfer process.

Abstract: A receiving element for use in a photographic silver diffusion transfer process which comprises a transparent support carrying a layer comprising gelatin, hydroxyethyl cellulose and noble metal silver-precipitating nuclei; wherein said nuclei are present in a level of from about 0.1-0.4 mgs/ft.sup.2, gelatin is present at a level of from about 0.05 to 1.5 mgs/ft.sup.2 and hydroxyethyl cellulose is present at a level of about 0.1 to 7 mgs/ft.sup.2. Preferably, the noble metal is palladium. The receiving element is particularly useful in an additive color diffusion transfer process.