Abstract: A film sheet package comprising a stack of film sheets wrapped in a light-tight flexible wrapper sleeve (33), one end of the sleeve having a closed flap (26) and the opposite end of the sleeve having an open flap (27) that is folded to light-tightly close the package, wherein the side ends (53, 54) of the open flap are tucked in, the top end (56) of said flap is folded back at least once, but not so far that said top end, or a portion thereof, becomes wedged between the bottom end of said flap and the corresponding rear face of the package as said flap is folded on the top face of the package, and that said flap is fixed on said top face through rupturable sealing means (28).

Abstract: In a process of image production by the steps of developing an electrostatic charge pattern with toner particles comprised of coloring matter in a thermoplastic resin binder and dispersed in a carrier liquid and fixing the pattern-wise deposited toner particles while still damp with said carrier liquid on a support by simultaneously subjecting the same to heat and pressure, the toner particles have at 120.degree. C. a melt viscosity when dry of from 500 to 100,000 Pa.s, a mean average diameter of from 0.1 to 5 .mu.m, and a ratio of coloring matter to resin binder of from 1/1 to 1/9 by weight.

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: A handling device for X-ray film cassettes with a sheet shaped receiving material sensitive to X-rays comprises an input slot for introducing a cassette, a separate output slot for removing a cassette, the input and output slots extending substantially in the vertical direction, a cassette input stack container for accommodating cassettes to be inserted into the input slot and associated with the latter, and a cassette output stack container for receiving cassettes withdrawn from the output slot and associated with the latter, the input stack container having a bottom surface which extends downwardly towards the input slot and a rearwardly inclined rear wall which borders and aligns with the input slot, the input stack container being provided with transporting unit for a first cassette accommodated in a cassette stack and having its end side aligned with the input slot, the output stack container also having a rearwardly inclined rear wall and a downwardly forwardly inclined bottom surface provided with a ca

Abstract: The invention relates to a process and to an apparatus for carrying out the process for degassing of liquids at reduced pressure using a centrifugal force to produce a thin layer of liquid using a conical rotary body the interior of which is maintained at a reduced pressure and in which the liquid is conducted through a hollow shaft and is sprayed by means of a distributor to the conically widening internal surface of the rotary body into a thin film of liquid to be degassed and to flow to an annular collecting chamber from which the degassed liquid is conducted to the center of the centrifuge chamber and discharged from the rotary body against the reduced pressure through the hollow fixed shaft by means of a removal disc.

Abstract: A surface-active block copolymer which comprises chemically linked polymeric blocks (A) and (B), block (A) of said copolymer consisting of at least one homo- or copolymerized non-polar alpha,beta-ethylenically unsaturated monomer and block (B) of said copolymer is derived by polymerizing an alpha-beta ethylenically unsaturated monomer containing an epoxy group and transforming the epoxy group into an hydroxy-substituted ionic group, preferably an anionic group. These block copolymers are used as dispersing agents in aqueous dispersions, including polymeric latex dispersions, and as plasticizing agent in hydrophilic colloid layers, including colloid layers containing a dispersed light-sensitive silver halide emulsion or other auxiliary substances for photographic materials.

Abstract: Improved photographic recording materials contain silver halide grains having at least two zones differing in their halide composition and, as stabilizer, a compound corresponding to the formula ##STR1##

Abstract: In order to be able to cast additional layers on auxiliary layers of photographic materials immediately after the latter have been cast without encountering any difficulties as regards uniformity of the cast layer and wet adherence due to incomplete conversion of the gelatine from the sol to the gel form, the auxiliary layer must contain an effective quantity of at least one compound obtained by the reaction of trihydric to hexahydric alcohols with propylene oxide.

Abstract: Color photographic silver halide material in which at least one layer contains a silver halide emulsion with 95 to 100 mol % of chloride which has been optimally ripened with a combination of at least one sulphur ripening body and at least one compound of the formula ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 denote, independently of one another, hydrogen or alkyl, and X.sup..crclbar. denotes an anion, combines excellent sensitivity with low fog and steep gradation, particularly in the threshold and shoulder region.

Abstract: Magnetic carrier particles that can be positively charged triboelectrically and are suited for serving in magnetic brush toner-carrier development wherein said carrier particles comprise finely divided magnetically attractable powder dispersed in a resin binder which for at least 75% by weight consists of the acid-base reaction product of at least one acidic binder resin having an acid number in the range of 5 to 50 mg KOH/g, and at least one basic binder resin having free amin groups in an amount equivalent with 2 to 50 mg KOH/g and being present in an amount of at least 10% by weight with respect to such acidic resin.

Abstract: Described is a supporting hub for an internal slide, which accepts a spooled recording medium, where one side of the supporting hub lies against a ring-shaped supporting surface on the outside of the internal slide, where a reel hub carrying the recording medium or a flange spool can be pushed onto the other cylindrical side of the supporting hub and where the internal slide can be slid into a protective casing. The ring diameter of the supporting surface of the supporting hub lying against the inner side of the internal slide is here the same size or greater than the ring diameter of the supporting surface of the supporting hub lying against the outside of the internal slide. In a preferred embodiment, the supporting hub is in two parts which are detachable from the inside or the outside of the internal slide, and grasp one another.

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: A method of and an apparatus for making thermocopies in which a receiving material and an ink carrier member are synchronously advanced into a sublimation area opposite each other in a predetermined relationship therebetween, and the ink carrier member is heated linewise by a modulated laser beam to provide for pixelwise heating of the ink carrier member to enable transfer of an ink layer of a predetermined density from the ink carrier ribbon to the receiving material.

Abstract: A cylindrical core 1 for receiving windings of a photographic film web comprises a hub 3 having an axial re-entrant channel and an insert 4 fitting into and engaging shoulders 13, 16 of that channel to define with the channel a slot 26 for receiving an end of a film web 2. Cooperating detent elements 19, 25 are provided for resisting relative axial movement between the hub 3 and the insert 4 when the latter is inserted into the channel 11, and the insert 4 incorporates teeth 24 for engaging at least one marginal perforation of a film web to prevent circumferential slippage of the film web. The slot 26 is inclined obliquely from a radial direction, and the teeth 24 are located on the inner or lower wall thereof so that the film perforations are released from the teeth when the film end is tensioned at the end of unwinding.

Abstract: A clamping connection unit for joining two hollow cylindrical pipes together is described. The unit consists of two abutting identically constructed coupling halves (1,2), an elastic O-ring (16) placed between them and a clamping connection (15) pressing the two coupling halves together. The clamping connection is in the form of a pipe clamp and is chamfered off on the internal surfaces of the clamping jaws to form V-shaped surfaces which slide down on similarly chamfered surfaces of annular ridges at the pipe ends to connect the two coupling halves together without leaving a gap.

Abstract: A color photographic silver halide material which, in at least one silver halide emulsion layer, contains a magenta coupler corresponding to formula I or (II) below ##STR1## in which R.sub.1 represents alkyl, aryl or a ballast group,R.sub.2 represents a ballast group, alkyl or aryl,Z represents hydrogen or a group releasable on reaction with the developer oxidation product,and a compound corresponding to formula (III) ##STR2## in which R.sub.3 represents alkyl, alkoxy, aryl, optionally substituted amino or the residue of a heterocycle,R.sub.4 represents COR.sub.5, NHR.sub.6, S(O).sub.n R.sub.7,K.sub.5 represents OR.sub.8, NHR.sub.8, alkyl, aryl or a heterocycle,R.sub.6 represents SO.sub.2 R.sub.8, COR.sub.8 or CONHR.sub.8,R.sub.7 represents alkyl, aryl or NHR.sub.3,R.sub.8 represents alkyl or aryl andn=0, 1 or 2,with the exception of compounds in which R.sub.3 is a carboxymethoxyphenyl, carboxymethoxy, alkoxycarbonylmethoxy or alkoxycarbonylmethoxyphyl radical substituted at the methylene group.

Abstract: A photographic exposure apparatus comprising a support serving as a carrier for sheet material which is an original, or a photographic material, or is an original together with a photographic matrial; and a translucent positioning sheet for covering at least partially said support and which is adapted to engage a corner of said sheet material, characterized in that said translucent positioning sheet is provided with a pair of locating means spaced apart from each other so as to engage two neighbouring corners of said sheet material, whereby said sheet material may be located in a predetermined position, the said positioning sheet being attached to the said support.

Abstract: Remarkably high inter-image and edge effects are obtained when DIR-Couplers corresponding to Formula I are added to multilayered color photographic recording materials, in particular to green sensitive or red sensitive layers. The sharpness and color reproduction may thereby be improved. ##STR1## R.sup.1 and R.sup.2 denote alkyl or an aromatic group, R.sup.3 denotes H, alkyl or acylamino,R.sup.4 denotes H or alkylR.sup.5 denotes alkyl, alkinyl, aryl, acyloxy, carbamoyl or a cyclic imido group andn has the value 0 or 1and the total number of carbon atoms in R.sup.3, R.sup.4 and R.sup.5 is greater than 3 but not greater than 11.

Abstract: Dye diffusion images can be produced by a rapid process in which a first sheet material which contains at least one light sensitive silver halide emulsion on a layer support and at least one color producing compound capable of releasing a diffusible dye on development and/or a second, light insensitive sheet material containing a layer of binder in which is incorporated a salt of a weakly acidic organic compound and a strong organic base is or are moistened with an aqueous liquid and the two sheet materials are then heated to 40.degree.-120.degree. C. with their coated surfaces in contact and subsequently separated.

Abstract: Water soluble sulphates of a heteroaromatic bis- or poly-sulphone are suitable for use as hardeners for proteinaceous binders, in particular in photographic layers.