Abstract: A method is disclosed for the formation of an image comprising the steps of(1) image-wise exposing, in the presence of a photopolymerizable compound, a photosensitive element comprising a support and at least one photosensitive layer containing a silver halide sensitive to actinic radiation, an organic silver salt and a reducing agent,(2) heating said photosensitive layer while in contact with a receiving element and allowing non-photopolymerized compound in the non-exposed areas to transfer and penetrate in said receiving element, and,(3) separating said receiving element from said photosensitive element.The obtained image can be a useful visible image produced on at least one of the separated elements, or it can be a hydrophobic polymer image on a hydrophilic background formed in the finally separated-receiving element which is usable as a printing plate. In the former embodiment the receiving element comprises a support and a layer containing a pigment, e.g. carbon black.

Abstract: A thermal imaging process comprising the step of imagewise heating a donor element so as to transfer therefrom colored matter onto a contacting receptor element, characterized in that before said imagewise heating said receptor element contains in a layer at least one substance that by heat applied in the transfer of said colored matter undergoes a change giving rise to an increase in optical density.

Abstract: Method for making lithographic aluminum offset printing plates according to the DTR-process by photo-exposing a photosensitive monosheet layer assemblage comprising a hydrophilic aluminum foil, an intermediate layer comprising hydrophobic polymer beads prepared by polymerization of ethylenically unsaturated monomer(s) and having an average diameter not lower than 0.2 .mu.m, and a silver halide emulsion layer, applying an aqueous alkaline solution to the photo-exposed silver halide emulsion layer in the presence of a developing agent and a silver halide solvent to form a silver image and to allow unreduced silver halide or complexes formed thereof to diffuse image-wise from the developed silver halide emulsion layer to said aluminum foil to produce thereon a silver image, and separating said emulsion layer and said intermediate layer from the imaged aluminum foil. The invention also relates to the photosensitive monosheet layer assemblage used for making such printing plates.

Abstract: Method for making lithographic aluminum offset printing plates according to the DTR-process by photo-exposing a photosensitive monosheet layer assemblage comprising a hydrophilic aluminum foil, an intermediate layer comprising hydrophobic polymer beads prepared by polymerization of ethylenically unsaturated monomer(s) and having an average diameter not lower than 0.2 .mu.m, and a silver halide emulsion layer, applying an aqueous alkaline solution to the photo-exposed silver halide emulsion layer in the presence of a developing agent and a silver halide solvent to form a silver image and to allow unreduced silver halide or complexes formed thereof to diffuse imagewise from the developed silver halide emulsion layer to said aluminum foil to produce thereon a silver image, and separating said emulsion layer and said intermediate layer from the imaged aluminum foil. The invention also relates to the photosensitive monosheet layer assemblage used for making such printing plates.

Abstract: A stripping film material comprises a polyethylene terephthalate film base serving as temporary support being coated with a subbing layer essentially consisting of either:(1) hydroxypropylcellulose wherein the molar degree of substitution (DS) with hydroxypropyl groups is in the range of 3 to 1, or:(2) a copoly(vinyl acetate/crotonic acid) having a weight ratio of vinyl acetate to crotonic acid in the range of 85/15 to 99/1, wherein said subbing layer is coated with at least one hydrophilic colloid layer which is adapted to be stripped off after being moistened with an aqueous liquid, e.g. by contact with a wet surface of a permanent support.

Abstract: Method for making lithographic aluminium offset printing plates according to the DTR-process by photo-exposing a photosensitive monosheet layer assemblage comprising a hydrophilic aluminium foil, a water-swellable intermediate layer comprising a non-proteinic hydrophilic film-forming polymer, and a silver halide emulsion layer, applying an aqueous alkaline solution thereto in the presence of a developing agent and a silver halide solvent, allowing to reduce the photo-exposed silver halide, allowing the unreduced silver halide or complexes thereof to diffuse to said aluminium foil to form a silver image thereon, and separating said emulsion layer and said intermediate layer from the imaged aluminium foil. The invention also relates to the photosensitive monosheet layer assemblage used for making such printing plates.

Abstract: A recording material suited for forming a direct-read-after-write image by laser beam radiation, which recording material contains in a recording layer a naphthoquinonimine dye either or not in admixture with a hydrophobic polymer, characterized in that said naphthoquinonimine dye is present in the recording layer in microcrystalline state having a particle size in the range of 0.01 to 0.1 micron hereby showing an absorption maximum situated in the 800 to 880 nm wavelength range, the weight ratio of said dye to said polymer being in the range from 1/99 to 100/0.

Abstract: The present invention relates to a xeroprinting process, in particular a xeroprinting process comprising the following steps:(a) image-wise exposing to actinic radiation an electrostatic master having a photopolymerizable conductive layer to selectively polymerize and thereby increase resistivity in exposed areas of the layer;(b) forming a latent image of electrostatic charge by charging the master by corona discharge;(c) reversal developing the latent electrostatic image by depositing toner particles in the non-exposed areas of the layer;(d) transferring the toner image to another substrate and subsequent fusing;(e) resetting the process by cleaning and discharging the electrostatic master.According to a preferred embodiment the reversal development is effected by means of a development electrode inducing charges in the photopolymer plate opposite to the initial electrostatic image, and by means of dry electrophotographic toner.

Abstract: A method for recording an image of ionizing radiation comprising the steps of:(1) image-wise exposing to ionizing radiation an element containing at least one phosphor which converts said ionizing radiation into photochemically active radiation,(2) image-wise exposing a recording material to the thus obtained photochemically active radiation, said recording material containing at least one non-luminescent substance or poorly luminescent substance by means of which through said photochemically active radiation at least one compound is produced forming in said recording material or by transfer into a receptor element a latent luminescent image or by means of which through said photochemically active radiation (a) compound(s) is (are) formed that is (are) allowed to transfer from the recording material into a receptor element to form therein by chemical reaction a latent luminescent image,(3) exposing said latent image to radiation stimulating the fluorescent light emission of the formed luminescent compound(s),

Abstract: A process for the production of a heat-mode recording material by coating in a sealed zone maintained under vacuum conditions a web support with a heat-mode recording layer of vapor depositable material and within the sealed zone laminating a protective organic resin layer in web form by means of an adhesive layer onto the supported heat-mode recording layer. The web support moves within the sealed zone from a delivery reel to a take-up roll with the recording layer deposited thereon in a region between the rolls and the protective layer is laminated over the recording layer before the coated web support is collected on the take-up rolls.

Abstract: A halftone dot image pattern is formed on a support comprising a paper base, a polyolefin layer on at least one side of said paper base in a coverage in the range of 5 to 40 g/m2, on the opposite side of the polyolefin layer a binder layer comprising a hydrophilic colloid binding agent and white titanium dioxide pigment particles having an average grain size in the range of 200 nm to 450 nm, said pigment particles being present in a coverage of at least 0.5 g per m2 up to 300% by wt of the total binder contents. The half tone dot image pattern is on the exterior side of the binder layer and is a halftone relief image pattern having at least color pigmented gelatin-containing layer, preferably three or four such layers of different colors; e.g., cyan, magenta, yellow and optionally black. The resultant halftone material has a controlled visual appearance; e.g., for color proofing purposes, especially with respect to dot gain.

Abstract: Method for making lithographic aluminium offset printing plates according to the DTR-process by photo-exposing a photosensitive monosheet layer assemblage comprising a hydrophilic aluminium foil, a water-swellable intermediate layer comprising a non-protenic hydrophilic film-forming polymer, and a silver halide emulsion layer, applying an aqueous alkaline solution thereto in the presence of a developing agent and a silver halide solvent, allowing to reduce the photo-exposed silver halide, allowing the unreduced silver halide or complexes thereof to diffuse to said aluminium foil to form a silver image thereon, and separating said emulsion layer and said intermediate layer from the image aluminium foil. The invention also relates to the photosensitive monosheet layer assemblage used for making such printing plates.

Abstract: Sheet material including a cellulose acetate temporary support carrying thereon a continuous strippable layer. The strippable layer is a non-photosensitive layer containing a coverage of at most 20 g/m.sup.2 gelatin hardened to a degree corresponding to the addition of at least 0.001 g of formaldehyde per g of gelatin. Transfer of the strippable layer from the temporary support onto an image material having e.g. an imaged hydrophilic colloid layer or relief pattern given improved gloss control and optical dot gain control for such image material.

Abstract: A process for forming a line art of halftone multicolor colloid pattern involves the contact exposure in registration of different colored silver halide emulsion hydrophilic colloid layers each on a temporary support and the hardening development of the individual exposed silver halide emulsion layers in turn after each is transferred to a common intermediate support to form thereon a multi-layer assembly of reverse reading color relief images on top of each other. This assembly together with an underlying stripping layer from the intermediate support is transferred bodily onto a permanent support by adherence to an adhesive layer carried on the latter support to form thereon a right-reading multicolor image that may serve as a color proof.

Abstract: Process for controlling the visual appearance of an image present on a permanent support in the form of a hydrophilic colloid layer, layer system or relief pattern by the transfer of a continuous non-photosensitive layer from a temporary support onto said permanent support either before or after said image is formed thereon, which comprise by pre-wetting the permanent support either image-free or with said image already thereon, containing the pre-wetted support with said continuous layer carried on the temporary support, and stripping off the temporary support to leave the continuous layer adhering on the permanent support, said continuous layer being non-photosensitive and contains hardened gelatin, the gelatin being applied at a coverage of at most 20 g/m2 and having a degree of hardening corresponding with that achieved by the addition of at least 0.001 g of formaldehyde per gram of gelatin.

Abstract: Process for forming a halftone multicolor pattern which comprises in sequence given the following steps:(1) scanningwise exposing a multicolor original attached to a rotating scanner drum to produce series of electrical signals that are fed into a computer,(2) exposing in a single scan separate black-and-white light-sensitive silver halide emulsion layer materials under the control of the computer in accordance with said signals,(3) developing the exposed silver halide emulsion layers with a hardening or tanning developing agent producing a negative or positive silver selection image that can be used as intermediate original in the production of a printing plate, a pattern of oxidized hardening developing agent being imagewise transferred during development from the emulsion layer onto a hardenable non-photosensitive colored gelatin layer originally carried on a temporary support or carried directly on a permanent support,(4) producing a colored relief image by wash-off processing of said colored gelating lay

Abstract: Process for forming a halftone or multicolor colloid pattern by the following steps in sequence:(1) scanningwise exposing to light a multicolor original carried, e.g., by a rotating scanner drum, to obtain separate red light, green light and blue light, out signals which are received by corresponding photon-conductors to produce corresponding separate series of electrical signals, which are, e.g.

Abstract: Photographic material comprising a supported or self-supporting binder layer incorporating a photoradical precursor compound in operative relationship with an image-forming precursor compound which is capable of taking part in image formation by reaction with the photoradicals formed by photoexposing said photoradical precursor, wherein the image-forming compound is a reducing compound containing Zerewitinoff active hydrogen for forming a print-out image or an ethylenically unsaturated compound capable of free-radical addition polymerization, and the photoradical precursor compound is a di- or tri(2,3-aryl substituted indolyl) compound free of Zerewitinoff active hydrogen.