Abstract: A device for producing photographic exposures of images appearing on an image screen onto a film platform carrying a plane film comprises a support holding a number of objectives and displaceable parallel to the axis extending through the central point of the image screen and the central point of the film platform. The platform carries one objective fixed to the platform of one magnifying property and four additional objectives which have such magnifying properties that each of them projects the picture field area of the screen on only one fourth of the usable film surface.

Abstract: Photographic silver halide emulsion element for dye image production comprising a support carrying at least one alkali-permeable silver halide hydrophilic colloid emulsion layer incorporating in operative association therewith a dye-releasing compound capable of releasing a diffusible dye moiety from a carrier moiety by a redox reaction, said compound corresponding to the general formula: ##STR1## wherein CAR is an organic carrier moiety capable of undergoing a redox reaction, L is a group cleavable or releasable from the carrier moiety by a redox reaction taking place in alkaline condiitons as a function of the development of a silver halide emulsion layer incorporating such compound, G is a bridging group, each of L.sup.1 and L.sup.2 is a linking member, PUG.sup.1 is a dye (precursor) group, PUG.sup.2 is a dye (precursor) group, an UV-absorber group, or a singlet oxygen scavenger group.

Abstract: The upper and lower cassette parts of a magnetic tape cassette are connected to each other by means of non-releasable fixtures, wherein a synthetic material bolt is introduced into at least one of the holes provided for screw connections according to the prior art. The bolt is provided with longitudinal ribs (8) or with an inner bore (9) or possesses a thread-like or saw tooth-like track (11) in the manner of a dowel (FIGS. 3a-3c).

Abstract: A color photographic recording material containing a coupler which releases a photographically active compound.Couplers corresponding to formula (I) couple with color developers to form yellow to yellow-orange dyes and, in doing so, release the residue X as a photographically active compounds. Where X is a development inhibitor, remarkably high inter-image and edge effects can be obtained. ##STR1## in which R.sup.1 represents alkyl, a heterocyclic or carbocyclic aromatic group or -NH-CO-R.sup.2 ;R.sup.2 represents alkyl, aryl or -NH-R.sup.3 ;R.sup.3 represents alkyl or aryl;Q represents the groups to complete a fused, optionally substituted benzene or heterocyclic ring;X represents the residue of a photographically active compound;TIME represents a bond which, on reaction of the coupler with the oxidation product of a color developer, is released together with the residue X attached thereto and, in turn, releases the residue X as a photographically active compound under the development conditions;n=0 or 1.

Abstract: A magnetic recording carrier which has improved mechanical properties as a result of a highly active cross-linking reaction of the polymeric binder is produced by carrying out the cross-linking reaction by way of oligo- and/or polyurethanes and/or polyureas containing oxadiazine trione rings in the presence of hydroxyl groups and/or aliphatic amino groups. The oligo- and polyurethanes containing the oxadiazine trione ring are reaction products ofA polyisocyanates with a functionality of from 1.95 to 2.05, preferably from 1.99 to 2.01 andB compounds containing predominantly two zerewitinoff active hydrogen atoms, selected from hydroxyl and/or amino compounds in the molecular weight range of from 18 to 6000.under the condition that the ratio of isocyanate groups present in A to zerewitinoff active hydrogens present in B lies in the range of from 0.75:1 to 1.

Abstract: A color photographic recording material having a magenta layer which is prepared from a casting solution containing a 4-equivalent magenta coupler of the pyrazolone series and a thiosulphonic acid ester compound has the properties of 2-equivalent magenta couplers in its coupling reactivity and the properties of 4-equivalent magenta couplers in its speed of color formation.

Abstract: In a process for the manufacture of film cartridges which have a substantially cyclindrical wall, a film opening extending along a generating line of the cylinder and caps at the ends, one plate per cartridge is separated from a flat strip of material to form the cartridge wall, which strip of material contains the plates for several cartridges and has a width corresponding to the circumference of a cartridge wall, and the said strip of material is fitted continuously with a sealing material along at least one of the edges for the film opening before the plates are separated, the said sealing material being delivered to the strip of material in the form of endless band of sealing strips which are bonded to the strip of material as they pass through a glueing station.

Abstract: A light-tight cassette for a roll of light-sensitive photographic material, comprising a shell (11) of generally rectilinear sectional profile with a light-tight dispensing slot (15) defined between two lips, has a stiffening member (33) inserted between at least one lip (21) of the dispensing slot and the adjacent shell wall (19), for increasing the bending resistance of said lip and minimizing accidental light leakage through the slot.

Abstract: A color photographic recording material contains a dispersion of hardened particles of a complex coacervate (packet emulsion) in at least one layer of binder, which particles are hardened with a hardener corresponding to the following formula I ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and each denotes an alkyl group with 1 to 8 carbon atoms or an aryl or aralkyl group optionally substituted with an alkyl group having 1 or 2 carbon atoms or with a halogen atom or R.sup.1 and R.sup.2 together denote the atoms required for completing a heterocyclic ring, e.g. a piperidine or morpholine ring, optionally substituted with an alkyl group having 1 or 2 carbon atoms or with a halogen atom,R.sup.3 denotes a hydrogen atom or an alkyl group having 1 or 2 carbon atoms andn represents 0 or 2.

Abstract: An apparatus for automatically taking up and depositing spools consists of a circular cylindrical body having several radially displaceable claws which can be operated by compressed air uniformly distributed over its cylindrical external surface, which claws are pushed outwards against the force of a spring stretched over the external circumference of the circular body, and axially displaceable, so-called holding down elements which are situated between the claws and under the bias tension of springs to push the mounted spool flange against the bent end of the claws.

Abstract: Method for the preparation of stable aqueous dispersions of finely divided solid spherical polymer beads having an average particle size between about 0.5 and about 5 .mu.m and having a glass transition temperature of at least 40.degree. C. by dissolving in an aqueous solvent mixture at least one .alpha.,.beta.-ethylenically unsaturated monomer capable of forming a polymer that is soluble in the monomer(s) present in said aqueous solvent mixture but which is insoluble in said aqueous solvent mixture, a free radical-forming polymerization initiator, and a graft-polymerizable polymer containing hydrophilic groups, heating the solution to a temperature from 50.degree. C. to the reflux temperature thereof with stirring so as to form said polymer beads. The polymer beads can be used in an antifriction surface layer, an antihalation surface layer, an antistatic surface layer, or in a protective surface layer of a photographic element or in a top layer of a drafting film containing a photosensitive layer.

Abstract: Image receiving material suited for use in the silver complex diffusion transfer reversal process which material contains a water-impermeable support coated with (1) an image-receiving layer containing physical development nuclei dispersed in a waterpermeable binder and (2) a waterpermeable top layer free from development nuclei and containing a hydrophilic colloid, characterized in that:(i) the total solids coverage of said two layers (1) and (2) is at most 2 g/m2,(ii) in layer (1) the coverage of said nuclei is in the range of 0.1 mg/m2 to 10 mg/m2, and the coverage of binder is in the range of 0.4 to 1.3 g/m2, and(iii) in said top layer (2) the coverage of hydrophilic colloid is in the range of 0.1 to 0.9 g/m2.

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: Dye images of high color yield and high gradation are obtained with a color photographic recording material containing 2-equivalent yellow couplers corresponding to formula I, particularly in modern rapid processing methods or in developers free from benzyl alcohol. ##STR1## R.sup.1, R.sup.2 (same or different) represent hydrogen, alkyl or halogen; R.sup.3 represents alkoxyalkyl or an alkyl radical substituted by a heterocyclic group containing at least one oxygen atom;R.sup.4 represents alkyl or aryl;R.sup.5 represents halogen or alkoxy;R.sup.6 represents hydrogen, alkoxy, amino, acylamino or carbamoyl;represents alkoxy, acylamino, carbalkoxy, carbamoyl or sulfamoyl.

Abstract: 5-pyrazolone compounds which are substituted with a thioether group in the 4-position may be prepared by the reaction of a 5-pyrazolone compound which is unsubstituted in the 4-position with a sulphenic acid amide. The resulting 5-pyrazolone compounds substituted in the 4-position are suitable for use as 2-equivalent magenta couplers in color photographic recording materials.

Abstract: Phosphonium mordanting polymer, that is capable of fixing acid dyes and that comprises randomly distributed recurring units corresponding to the general formula (I) ##STR1## wherein: A represents a unit that is derived from a copolymerizable monomer capable of quenching singlet oxygen e.g. N-vinylimidazole or 2-methyl-1-vinylimidazole;B represents a unit that is derived from a copolymerizable monomer having a hydrophobic character e.g. acrylonitrile or methacrylonitrile;n represents an integer of from 1 to about 12;each of R.sub.1, R.sub.2 and R.sub.3 (same or different) represents a C.sub.1 -C.sub.8 alkyl group e.g. n-butyl, a substituted C.sub.1 -C.sub.8 alkyl group e.g. a methylol group, a cyanoethyl group or an aralkyl group, a cycloalkyl group, an aryl group e.g. phenyl, or a substituted aryl group;X.sup.- represents an acid anion e.g. a halogen anion e.g. Cl.sup.-, Br.sup.- or I.sup.-, or an anion derived from an inorganic acid e.g. NO.sub.3.sup.-, HSO.sub.4.sup.-, SO.sub.4.sup.--, H.sub.2 PO.sub.4.sup.

Abstract: A no-rinse processing method for the production of color photographic images comprising the steps of developing, bleaching, fixing and stabilizing, of which the bleaching and fixing steps may be combined into a bleach fixing step, gives dye images of satisfactory quality, even after prolonged use, if the stabilizing bath used in the stabilizing step contains an effective quantity of a pyrazole which, in one of the possible tautomeric forms, corresponds to the following general formula: ##STR1## in which X represents OH or NH.sub.2,R.sub.1 represents alkyl, substituted alkyl, aryl, substituted aryl or carboxyl,R.sub.2 represents hydrogen, alkyl or substituted alkyl,R.sub.3 represents hydrogen, alkyl, substituted alkyl, aryl or substituted aryl.

Abstract: A photographic silver halide emulsion material for carrying out a dye diffusion transfer process which material contains a compound that is capable of releasing a diffusible light-fast azo dye from a non-diffusible carrier moiety, wherein said dye contains the following group: --Ar.sup.1 --SO.sub.2 NR--Ar.sup.2 --NR--SO.sub.2 -- as defined herein.

Abstract: A toner composition comprised of electrostatically attractable fusible powder particles, having an average particle size in the range of 1 to 100 .mu.m and a melt viscosity at 190.degree. C. in the range of 20 to 200 Pa.s, said powder particles comprising a coloring substance, a polymeric binder which consists essentially of a copolymer of:(1) styrene or styrene homologue,(2) an alkyl acrylate or alkyl methacrylate monomer wherein alkyl is a straight chain of at least 8 carbon atoms, and(3) a crosslinking monomer containing at least two ethylenically unsaturated groups,the binder copolymer constituting more than 50% of the total weight of the powder particles.

Abstract: Water-soluble substantially non-hardening aldehydes or water-soluble substantially non-hardening aldehyde precursor compounds are suitable as fog-reducing compounds for the photographic dye diffusion transfer process in which an imagewise-exposed color photographic recording material containing light-sensitive silver salt and a non-diffusing dye-releasing compound in at least one binder layer arranged on a layer support, is developed, preferably under the effect of heat, to produce a diffusible dye image and in which the diffusible dye image is transferred to an image receptor layer.