Abstract: In an injection moulding tool for the production of a magnetic tape cassette casing constructed, in part, in two layers the apparatus has a fixed core (1a) provided, on the rim, with a projection (5) which provides a sealing strip relative to the moving core (2a). After the injection moulding process into the first mould cavity (4), the moving core (2a) is moved axially downwards by about half the wall thickness, whereupon the second mould cavity (3, 3') is filled by injection through a second needle shut-off nozzle (FIG. 1b).

Abstract: A photographic recording material comprising a support, at least one photosensitive, gelatine-containing silver halide emulsion layer on one side of the support and a gelatine-containing NC layer on the other side of the support, in which the NC layer contains a certain hydrophilic polymer, is distinguished by the fact that there is relatively little E.sub.a curl during drying whereas sufficient E.sub.i curl is present after drying, so that the material is not damaged during processing.

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: 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: A wet treatment arrangement for photographic sheet carriers comprises at least one liquid tank having an inlet slot and an outlet slot, and an upper side, at least one transporting roller located in the tank for transporting a sheet carrier from the inlet slot to the outlet slot, a cover part covering the upper side of the tank and provided with guiding surfaces for guiding a sheet carrier from the inlet slot to the transporting roller and from the transporting roller to the outlet slot, and also provided with transfer guiding surfaces, the first mentioned guiding surfaces and the transfer guiding surfaces merging with one another and being formed as guiding ribs extending transversely to a length of the rollers and parallel to one another.

Abstract: Development of a color photographic material in which the emulsion layers contain silver halide grains with a chloride content of at least 80 mol % can be completed within 40 seconds by using a substantially bromide free color photographic developer solution containing, in 1 liter of aqueous solution ready for use, from 4 to 15 g of the developer corresponding to the following formula ##STR1## or a corresponding quantity of its salts, from 8 to 35 g of PO.sub.4.sup.3- ions, at least 0.2 g of antioxidant, from 0.5 to 5.0 g of KCl and other conventional components and adjusted to a pH of from 10.4 to 12.9.

Abstract: A measuring strip for evaluating the quality of photographic half tone images which contains on a transparent base a test field (F) divided into at least two sub-fields, wherein (1) a first sub-field (F.sub.1) contains a plurality of individual areas each containing a group of opaque dots, wherein each individual area has dots of substantially equal size uniformly distributed in a transparent background area, and wherein (2) a second sub-field (F.sub.

Abstract: The present invention provides a method of preparing a planographic printing plate comprising the steps of:(1) exposing a DTR mono-sheet material containing a silver halide emulsion layer and a nuclei containing surface layer in a laser beam containing device, e.g. a helium-neon laser, an argon laser, or a semiconductor laser, wherein the said emulsion layer contains at least one emulsion showing following characteristics:(a) the emulsion consists principally of silver chloride but contains bromide ranging from 5 mole % to 40 mole % and iodide ranging from 0 to 1 mole %;(b) the emulsion belongs to the core-shell type wherein substantially all the bromide is concentrated in the core;(c) the emulsion grains contain Rhodium and/or Iridium dopants;(2) processing the DTR material by means of a developing or activator solution, containing at least an alkali agent and a silver halide complexing agent, followed by a neutralization solution.

Abstract: A granulated photographic fixative or bleach fixative composed of grains containing both a thiosulphate and a disulphite is mechanically stable, dust free and freely pourable, will keep indefinitely and is distinguished by its great speed of solution.

Abstract: Color photographic bleaching agent containing, in the form of a granulate having an average particle diameter of from 150 to 3000 .mu.m, an iron (III) complex or an iron (III) complex salt and a rehalogenating agent is dust free and freely pourable, will keep indefinetely and dissolves in water at 25.degree. C. within 45 seconds to form a solution ready for use.

Abstract: Black-and-white continuous tone reproductions may be obtained under daylight conditions with a photographic recording material in which the silver halide consists to an extent of at least 75 mol % of silver chloride and has been prepared in the presence of a 1-phenyl-5-mercaptotetrazole compound. The material is particularly suitable for reprophotographic work, e.g. for the production of continuously graduated masks.

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: An electrophotographic recording material which comprises an electrically conductive support having coated thereon a layer containing at least one 1,2-dihydroquinoline compound according to one of the general formulae (I) or (II) disclosed in the description.

Abstract: Dye-donor element for use according to thermal dye sublimation transfer comprising a support having thereon a dye layer containing a yellow arylazoaniline dye comprising a hydroxy or amino substituent on the aniline nucleus in ortho position with respect to the azo link.

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 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 apparatus by which layer thickenings formed transversely to the direction of movement of a coated web are removed after the continuously moving web has been coated with liquids or dispersions, for example a web of photographic film or paper or magnetic recording carrier, are described. A deflecting roller (4) over which the web travels with its coated side facing the roller is situated downstream of the coating and drying devices. When a layer thickening approaches, a cleaning roller (2) covered with a fleece is swung into contact with the web, whereupon the web travels only over the cleaning roller.

Abstract: A device is described for rapid reel change when winding film strips produced by guiding a continuous film web through a cutting device, wherein the strips are sucked by a sucking comb (3) provided with segments (5), a pivotable roller (6) is pressed against this sucking comb (3) which sucks the film strips, whereupon the sucking comb is pivoted onto a winding shaft (13) fitted with winding cores (14), which winding shaft (13) takes up the ends of the cut film strips, whereupon the complete tape winding (23) is prepared. The winding device (10) is then pivoted by 180.degree. and a new winding shaft (13') already fully fitted is prepared for renewed winding.

Abstract: A transport device for a microfilm passage camera has a document supply device, and a transport device for further transporting a document in a camera and/or a document discharge device. Each of the document supply device and document transport device have a plurality of rotary members, a plurality of rings arranged so that each of the rotary members abuts against a respective one of the rings, a plurality of transporting rollers arranged so that the rings are mounted in groups on the transporting rollers, a lower guiding sheet limiting from above a document passage and provided with a plurality of perforations through which the rings extend into the document passage. The transporting rollers are driveable with a speed corresponding to filming of a document in the filming station.

Abstract: An adhesive sealing strip for coiled or spooled recording materials, such as rolls of magnetic tape, in which the identification features, such as casting numbers, are clearly legible, is obtained by printing the features on an adhesive tape over the entire width of the web in lines one above the other and at the same time side by side in columns, each following column being offset vertically relative to the preceding column by a specific amount, whereupon the recording material is cut to the desired useful width. In this manner, a maximum height of printing of the identification features can be achieved in which the symbols are clearly legible (FIG. 3).