Abstract: A latex is formed of a copolymer of 90 to 98% by weight of ethyl acrylate and 2 to 10% by weight of an ionogenic comonomer. The latter comprises in its structure a polymerizable ethylenically unsaturated bond, a hydrophobic chain comprising at least 8 carbon atoms, and a strong hydrophilic group taken from a sulpho group, a sulphato group or a phosphono group in acid or salt form.Photographic layers are described wherein the above latex is used as plasticizer for gelatin.

Abstract: A daylight loading device (40) for loading a microfiche cassette (10) with unexposed microfiches makes use of an inclined platform (50) having guides (51) and (52) upon which the microfiche cassette (10) may be positioned. Microfiches are fed from an adjacently positioned dispensing station (43) via a slot (46) and a transport roller pair. In order to provide for an optimum registering of the microfiche in the bottom of the microfiche cassette (10) a spadelike element (55) is temporarily positioned near the latter. A mechanism is provided for re-locking the microfiche cassette (10) after loading.

Abstract: A process of producing a liquid image, wherein an insulating material bearing an electrostatic charge pattern detectable at its surface is developed by wetting with a developing liquid according to such charge pattern and in which process developing liquid is brought substantially uniformly in close proximity to or in contact with the material with at least two developing liquid applicator means, which are disposed in succession along the path followed by the material and which supply developing liquid to the material in such a way that the liquid image is gradually built up by amounts of liquid offered by such successive applicator means.

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: An electrostatic liquid developer for the development of electrostatic charge patterns comprises an electrically insulating carrier liquid having a dielectric constant of less than 3 and a volume resistivity in excess of 10.sup.9 Ohm.cm. In this electrically insulating carrier liquid are dispersed resin-precoated toner particles formed of a pigment or coloring agent precoated with a polymer of an acrylic or methacrylic acid ester of hydrogenated abietyl alcohol.

Abstract: A device (40) for unloading microfiche casettes (10) in daylight conditions comprises a housing (41) into which the microfiche cassette (10) is introduced and which is light-tightly closed by means of a door (42). The exit of the housing (41) is coupled with the inlet of a processing apparatus (50) in which the microfiche undergoes its chemical treatment.The unlocking of the microfiche cassette (10) occurs by disengagement of the locks (19,20) under the influence of tapered portions from the openings (23,24) in the bottom of the microfiche cassette 10 (34,35). Opening of the cassette (10) is carried out by exerting a downwardly directed force upon the rearwardly protruding portion of screen (13). Due to the inclined position of the opened microfiche cassette (10), the microfiche contained in the latter slides towards the entry rollers of the processing apparatus (50).

Abstract: In the continuous high speed coating of webs having spliced joints by means of coating devices that are closely spaced from the webs, coating defects caused by the joints are avoided by splicing the webs by means of a splicing tape that is attached at one end to the front, i.e., coated, side of the old web and at the other end to the rear, i.e., uncoated, side of the new web, whereby only "step-up" discontinuities are formed at the splicing joint.

Abstract: Method and apparatus for applying a plurality of superposed layers to a web by curtain coating in which only some of the plurality of layers are, and in the extreme case only one layer is, in contact with the curtain guides. The width of the remaining layers is smaller than the width determined by the curtain guides, and preferably smaller than the width of the web.

Abstract: Said material contains a quinone-type compound which corresponds to one of the formulae (A) or (B) and which is capable in reduced state and under alkaline conditions of releasing a photographically useful group e.g. a dye: ##STR1## wherein: each of (Nuox).sup.1 and (Nuox).sup.2 represents an oxidized nucleophilic group,Z represents a bivalent atomic group which is electronegative,Q together with the Z group represents a releasable photographically useful group,each of R.sup.1, R.sup.2 and R.sup.3 is hydrogen, halogen, alkyl, alkoxy, or an acylamino group or R.sup.1 and R.sup.2 in adjacent positions on the ring form a ring fused with the remainder of the molecule, or R.sup.2 and R.sup.3 together are fused with the remainder of the molecule.each of R.sup.4 and R.sup.5 represents hydrogen or a hydrocarbon group.At least one of the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4 or R.sup.5 is a ballasting group X.

Abstract: Novel magenta forming color couplers for use in silver halide color photography are described which correspond to the formula: ##STR1## wherein R.sub.1 represents hydrogen, alkyl or aryl; R.sub.2 represents fluoroalkyl, cyanoalkyl or phenyl; X is hydrogen or a displaceable group; Ar represents phenylene and Y represents alkyl, aryl, alkylamino, arylamino or alkylarylamino.

Abstract: Device and method for the optical inspection of speck-like and streaklike defects in a moving web.A source of radiation illuminates a transverse zone of the web, a series of photocells measures the radiation after transmission through, or reflection from the web, and a grating arrangement modulates the radiation received by the photocells, thereby to modulate the output signal of each cell by an A.C. component.

Abstract: An apparatus for opening radiographic cassettes comprises a housing which may be closed in a light-tight fashion and containing a platform onto which the radiographic cassette is positioned. Also, in the housing is an elongated upwardly inclined cam surface which engages a lip portion projecting from the cover of the cassette. When pushing the cassette further into the housing the cover becomes gradually lifted by the cam action. At a given position the cover is lifted sufficiently open to permit the introduction and removal of unexposed and exposed film into and out of the cassette. A release mechanism, upon actuation, enables the cassette cover to drop thereby closing and relocking the cassette.The apparatus is suitably incorporated in a daylight system for loading radiographic cassettes with unexposed radiographic films.

Abstract: An X-ray image intensifying screen, which includes in a binder layer rare-earth oxyhalide phosphor particles that are in contact or admixed with an inorganic or organic substance or mixture of substances bringing about that the fluorescence power of said oxyhalide phosphor particles is less prone to be reduced by moisture, said substance being a non-phosphor substance or a phosphor substance other than calcium tungstate and producing hydroxyl ions when put in water, wherein the hydroxyl ion production power of said substance is such that when putting said substance in water at 25.degree. C. in an amount of 0.1 equivalent per liter a pH of at least 8.0 is obtained and the solubility in water of said substance is such that at least 0.05 g of said substance is soluble in 100 ml of water at 20.degree. C.

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 photosensitive recording material containing in admixture in a binder medium:(1) as imaging substance an organo-tellurium compound containing directly linked to a tellurium atom halogen and at least one organic substituent comprising at least one carbonyl group,(2) a photoreductant which upon exposure to activating radiation in the presence of a hydrogen-donating compound reduces said organo-tellurium compound to liberate metallic tellurium and halogen acid,(3) a hydrogen-donating compound from which hydrogen can be abstracted by the photo-exposed photoreductant, and(4) an organic reducing agent precursor, from which by the action of an acid a compound capable of reducing said organo-tellurium compound can be set free.

Abstract: In an extrusion coating process of the flow-stretch type in which a ribbon of an aqueous gelatin coating composition is extruded through an elongated orifice onto a moving support and becomes stretched and attenuated in thickness between the orifice and support, at least one visco-elasticity enhancing agent is added to the coating composition in sufficient amount as to disproportionately increase the elasticity of the composition compared to its viscosity so as to render the composition stretchable at viscosities which are substantially reduced compared to what would otherwise be necessary for flow-stretch coatability.

Abstract: A proteinaceous material such as gelatin is hardened by treatment with an aqueous solution of a partial hydrolysis product of cyanuric chloride that has been buffered with a water-soluble borate, e.g. sodium metaborate, potassium metaborate or ammonium metaborate.The proteinaceous material can be a proteinaceous coating such as a photographic silver halide emulsion layer, a backing layer, a protective layer, a filter layer or any other photographic auxiliary layer.

Abstract: Abrasion marks by dry-friction and the tendency of producing pressure-scratches in photographic materials is reduced by incorporating in the gelatin silver halide emulsion layers polymeric compounds containing recurring units with semicarbazone or alkoxy carbonyl hydrazone groups in the side-chains. These recurring units are represented by one of the formulae: ##STR1## wherein: A is a single bond or --CONH-alkylene-, --COO-alkylene-, or phenylene,B is a single bond or alkylene,R.sup.1 is hydrogen or methyl,R.sup.2 is hydrogen, phenyl or lower alkyl (1-4 C),R.sup.3 is --NH--COOR or ##STR2## wherein R is lower alkyl (1-4 C) and each of R.sup.4, R.sup.5 and R.sup.6 is hydrogen or lower alkyl (1-4 C).

Abstract: A film cassette unloading apparatus comprises a cassette positioning mechanism located in a light-tight housing. Within the housing is provided a platform onto which the cassette is placed bottom side up. An unlocking mechanism, adapted for the particular type of cassette unlocks same. Then, an opening mechanism engages the rim of the bottom part and lifts the bottom part in upward direction, thereby performing a partial rotation around the hinge-point of the cassette. By mounting the platform in inclined position, the film which is contained in the cassette, falls out of the latter by gravity.

Abstract: X-ray image intensifying screen including at least one fluorescent layer comprising phosphor particles dispersed in a binder and on top of such layer a protective layer containing a crosslinked polymer mass obtained by an acid-catalyzed reaction of a polymer or mixture of polymers containing reactive hydrogen atoms and a crosslinking agent, the crosslinking agent being an organic compound containing a plurality of etherified N-methylol groups.