Abstract: In a laminated product wherein at least one supported information-containing hydrophilic colloid layer is adhesively bonded on at least one of its surfaces to a protective hydrophobic resin sheet, improved adherence is achieved by using as the bonding adhesive a cationic crosslinked polymer obtained by:a) condensing a polyalkylenepolyamine containing at least two primary amino groups and at least one secondary or tertiary amino group with a dicarboxylic acid to form a polyamidoamine,b) subjecting the resultant polyamidoamine to a graft reaction in the presence of an acid catalyst with an alkene-1,2-imine, andc) crosslinking the resultant graft polymer with an epihalohydrin, an Alpha-Omega dihalohydrin ether or the ether compound obtained by reaction of epichlorohydrin with a water-soluble polyalkyleneoxide to form the water-soluble cationic polymer. With this adhesive bond, a tamper-proof seal can be obtained between the information-containing colloid layer and the hydrophobic resin protective sheet.

Abstract: A method for the production of a silver image by the silver complex diffusion transfer reversal process, said method comprising the following steps:(I) image-wise photo-exposing a silver halide emulsion layer of a photographic silver halide emulsion having in waterpermeable relationship with the silver halide at least one developing agent,(II) wetting with a practically neutral aqueous liquid the said photo-exposed silver halide emulsion layer and/or wetting with said liquid a development nuclei containing layer of an image-receiving material as defined hereinafter and contacting said materials thereby bringing said layers into waterpermeable relationship with each other, and(III) separating the contacted materials after formation in the image-receiving material of a silver image,wherein said image-receiving material contains in co-operable relationship: (i) physical development nuclei, (ii) a silver halide solvent being a silver complexing agent or precursor thereof, (iii) a watersoluble sulfite or sulfite p

Abstract: A sheet, ribbon or web material comprising a support made of a synthetic resin or a paper support coated with a layer of said resin, wherein a resin surface of said support is coated with a subbing layer and the subbing layer itself is coated with a hydrophilic colloid image-receiving layer containing development nuclei for silver image formation by DTR-processing, characterized in that the synthetic resin of said support is a polycarbonate or polypropylene resin, and said subbing layer contains in percent by weight on its total weight following ingredients: 1.3% to 80% of proteinaceous colloid, e.g. gelatin or caseine,0% to 85% of colloidal silica,1.

Abstract: A sandwich of sheet material and a plastic film on at least one side thereof is laminated together by advancing the sandwich in one direction between an opposed pair of rigid heating and pressure plates having mutually facing planar surfaces for contacting the sides of the sandwich. The plates of the pair being biased together under a pressure which increases in the direction of the sandwich advance while the pressure level across the plates transverse to the direction of advance at any locus along the plates is substantially uniform, and passing the thus heated and compressed sandwich between the nip of a pair of pressure rollers to complete welding of the sandwich together.

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: An image receiving material suitable for image production by dye diffusion transfer processing controlled by the development of (an) image-wise exposed silver halide emulsion layer(s), wherein said image receiving material comprises a supported image receiving layer free from gelatin and containing (1) a cationic polymeric mordant, and (2) colloidal silica applied from an aqueous acidic colloidal sol having a pH of not more than 4, and containing hydrated silica in combination with a smaller amount of colloidal alumina, the amount of said colloidal material to said mordant in the image-receiving layer being in a weight ratio range from 1/5 to 1/2, and silica (SiO.sub.2) being present at a coverage of at least 0.5 g per m2.

Abstract: A laminate is produced by bonding together two hydrophobic thermoplastic resin sheets at least one of which carries at least one hydrophilic colloid layer containing a photograph and/or other information on its inner side, by the steps comprising:(1) treating such information-bearing hydrophilic colloid layer with an aqueous composition containing a self-cross-linkable reaction product of:(i) an epihalohydrin or an Alpha-dihalohydrin,(ii) a water-soluble polyamide, and(iii) a water-soluble polyamine containing at least two nitrogen atoms separated by at least three carbon atoms and optionally also by at least one oxygen or sulphur atom and having at least two hydrogen atoms attached to different nitrogen atoms,(2) drying thus treated layer, and(3) applying heat and pressure to bond the hydrophobic resin sheets together with such hydrophilic colloid layer sandwiched there-between.

Abstract: Image-receiving material for use in diffusion transfer reversal processing comprising a polyvinyl chloride resin support coated with a hydrophilic waterpermeable layer comprising a proteinaceous colloid and a water-dispersible ionogenic polyester-polyurethane wherein isocyanate groups still present in its structure have reacted with an ionogenic compound containing at least one active hydrogen atom and a carboxylate or sulphonate salt group. This material is useful for the production of tamper proof laminates for identification purposes.

Abstract: An image-receiving material suitable for image production by dye diffusion transfer processing controlled by the development of (an) image-wise exposed silver halide emulsion layer(s), wherein said image-receiving material contains a hydrophobic resin support coated with a subbing layer that is coated with an image-receiving layer containing gelatin in combination with a cationic polymeric mordant containing glycidyl groups that can react with active hydrogen atoms of gelatin, the weight ratio of said polymeric mordant to gelatin being 25:1 to 1:1 and the gelatin being present at a coverage of at least 0.1 g per m2, and wherein said subbing layer has been applied from an aqueous composition comprising a polyester-polyurethane wherein isocyanate groups still present in its structure have reacted with an ionomeric compound containing at least one active hydrogen atom and a carboxylate or sulphonate salt group.

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: 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: An image receiving material suitable for image production by dye diffusion transfer processing controlled by the development of (an) image-wise exposed silver halide emulsion layer(s), wherein the support of said material is a resin support coated with gelatin in admixture with a cationic polymeric mordant containing glycidyl groups that can react with active hydrogen atoms of the gelatin, wherein said support is made of a vinyl chloride polymer and said support is coated with an image receiving layer wherein the weight ratio of said polymeric mordant to gelatin is from 25:1 to 2.5:1, and the gelatin coverage is at least 0.1 g per m2. In a particular embodiment the image receiving layer is used in the production of a laminar article serving as identification document.

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: Method of 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 and causing silver complexes to diffuse from the emulsion layer into a non-light-sensitive image-receiving layer in the presence of development nuclei thereby to form a silver transfer image in that layer, said transfer image formation occurring in the presence of at least one heterocyclic azole compound, which influences the density and tone of said transfer image, said compound being contained in said image-receiving layer and/or in said processing solution and being a heterocyclic azole corresponding to the general formula: ##STR1## wherein Y is .dbd.N-- or .dbd.HC--; Z represents atoms completing a heterocycle; A is a chemical bond or the group --(L.sup.1).sub.n --Alk--(L.sup.2).sub.m -- wherein n is 0 or 1, L.sup.

Abstract: Photographic silver complex diffusion transfer reversal process wherein the photographic material is spectrally sensitized with a dye corresponding to the general formula of the description, wherein said dye provides to the silver halide emulsion layer a spectral sensitivity mainly in the range of 400 to 500 nm and does not extends its spectral sensitivity substantially beyond 500 nm, and wherein the handling (exposure, development and diffusion transfer) of the photographic material during said steps is effected in yellow safelight corresponding to the light transmitted by a specified cut-off filter without causing fog.

Abstract: Method for the photographic production of a document by simultaneously photographically copying a continuous tone image and a graphic data pattern with a single common exposure source, characterized in that continuous tone image is exposed to said light source and the thereby image-wise modulated light image is projected through a screen dividing the light-image in dots of varying size onto one area of a photographic material, and the graphic data is simultaneously exposed to said light source and the thereby pattern-wise modulated light is projected through a screen dividing the original halftone pattern in dots of substantially same size printing them within a dot percentage range of 50 to 99%.

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 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 material for reproduction especially of continuous tone originals by the silver complex diffusion transfer process comprising in order:(1) a silver halide emulsion layer,(2) a layer reflecting white light having a dry coating weight in the range of 5 g/sq.m to 20 g/sq.m and dispersed in an organic hydrophilic colloid binder white inorganic pigment particles in such an amount that such layer has a diffuse transmission density of 0.30 to 0.50 and a reflection density of 0.15 to 0.20,(3) a subbing layer,(4) a hydrophobic transparent film support,(5) a subbing layer, and(6) an antihalation layer having a dry coating weight in the range of 4 g/sq.m to 15 g/sq.m and containing dispersed in an organic hydrophilic colloid binder a non-bleachable black antihalation material in such an amount that such layer has a diffuse transmission density of at least 2.

Abstract: A photographic material for reproduction especially of continuous tone originals by the silver complex diffusion transfer process comprising in order:(1) a silver halide emulsion layer,(2) a layer reflecting white light having a dry coating weight in the range of 5 g/sq.m to 20 g/sq.m and dispersed in an organic hydrophilic colloid binder white inorganic pigment particles in such an amount that such layer has a diffuse transmission density of 0.30 to 0.50 and a reflection density of 0.15 to 0.20,(3) a subbing layer,(4) a hydrophobic transparent film support,(5) a subbing layer, and(6) an antihalation layer having a dry coating weight in the range of 4 g/sq.m to 15 g/sq.m and containing dispersed in an organic hydrophilic colloid binder a non-bleachable black antihalation material in such an amount that such layer has a diffuse transmission density of at least 2.