Abstract: A suction device is movable between a receiving position in which it removes a sheet of film from a magazine and a delivery position in which it transfers the sheet to a conveyor. The effective width of the suction device approximates or equals the width of the smallest sheet of film to be transferred. Sheets having a width greater than the smallest width are gripped in the region of one end thereof leaving the remainder of such a sheet free to deflect. In order to permit proper transfer of all sheets into the conveyor, the latter is provided with grooved rollers which lift the deflected portions of larger sheets into the conveyor. In the delivery position, the suction device is located opposite one portion of the conveyor. The conveying force exerted by this portion of the conveyor is smaller than the gripping force which the suction device exerts on a sheet but larger than the conveying force exerted by a laterally adjacent portion of the conveyor.

Abstract: Apparatus for expelling reels with convoluted exposed roll films from successive film cartridges has a gate which supports a cartridge at an opening station between an axially movable mandrel and an axially movable pusher. A holder with four or more equidistant idler wheels having sharp edges is adjacent to one end of the shell of the cartridge which is located between the mandrel and the pusher to hold the shell against axial movement with the pusher when the latter is shifted axially toward the mandrel to bear upon the core of the reel in the cartridge and to expel the reel as well as one end wall of the cartridge from the shell while the mandrel transmits or is ready to transmit torque to the core in a direction to wind the film onto the core. The idler rollers are thereupon disengaged from the shell and the gate is retracted so that the shell can leave the opening station by gravity before the next cartridge enters the opening station by gravity feed.

Abstract: A sheet imaging apparatus with a collector tray for receiving a relatively thick stack of finished sheets. The collecting tray has a stack supporting back plate that is rockably arranged and springloaded, and the upper end of which is upwardly angled with respect to the lower end, whereby sheets in inverted relation may be collected without difficulties.

Abstract: Cyan couplers of the formula: ##STR1## wherein R=a ballast groupX=H or a leaving group which may be separated during color couplingY=halogen, alkyl, alkoxy, aryl or alkylthion=0 to 2 (if n=2, the radicals Y may be the same or different)have good dark fading stability of the coupled dye, moreover low secondary color densities and a sufficiently long-wave absorption maximum which is density-independent, furthermore they have high coupling activity and good solubility in high-boiling solvents.

Abstract: Yellow Couplers of the formula ##STR1## wherein Y represents an aliphatic or cycloaliphatic radical;X represents hydrogen or a separable group;R.sup.1 represents an alkyl radical having from 12 to 20 carbon atoms; andR.sup.2 represents an alkyl radical having from 1 to 4 carbon atoms,can be well dissolved in oil formers and also couple in the absence of benzyl alcohol with a high color yield. They are stable against heat and moisture and give rise to stable yellow dyes in color development.

Abstract: A light-tight cassette for photographic material, which has the form of a box (11) having wall portions (26,27) defining an exit slot (15) for material drawn from a roll (19). The exit slot has light-sealing means which is formed by cooperating flexible (31,32) lips, and generally rigid ribs (36,37) which limit the deflection of the lips. The box and the flexible lips are preferably made by the co-extrusion of suitable plastics. The cassette has the advantage that a satisfactory light-tightness of the dispenser slot can be obtained with very flexible lips, so that damage to the film by frictional contact with the lips is avoided while an effective light seal is assured for all paths of the material through the slot.

Abstract: A sheet imaging apparatus with a collector tray for receiving sheets discharged from the apparatus. The collecting tray has two stationary side-walls and a sheet-supporting back plate is driven in a reciprocating motion in a transverse direction, whereby two part-stacks of sheets may be produced that are individually accurately aligned by abutment against cooperating fixed abutments.

Abstract: Apparatus for producing photographs from an image screen of a monitor, said apparatus consisting of a slidable sheet film platform, a means for sliding said sheet film platform in a Z coordinate direction, means for moving the image screen perpendicular to the Z direction in both X and Y coordinate directions, and a lens situated between said image screen and said film platform for providing a focused image on the sheet film, said lens being connected to said image screen so that the two can be moved together in the X direction, but are still capable of independent movement in the Y direction.

Abstract: Developer compositions which contain a hydrolyzed polymaleic acid anhydride having improved protection against precipitation of calcium compounds.

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: Toner dispensing control in a xerographic printer wherein a toner dispenser is controlled in response to a reference magnetic density value that is variable during the running-in period of a fresh toner mixture, thereby to take account of the changing packing density of the mixture during such period.

Abstract: Method and apparatus for transferring an electrostatically deposited electrophoretic toner image including the step of transferring image-wise deposited toner particles dispersed in a stratum of carrier liquid having a volume resistivity of at least 10.sup.9 ohm.cm and a dielectric constant less than 3 from an electrically insulating surface onto a receptor element by contacting said liquid stratum while carried on the insulating surface with a surface of the receptor element while applying an electric field such that the receptor element has a polarity opposite to the polarity of the toner particles to effect such transfer, characterized in that before the image-wise liquid stratum touches the receptor element the carrier liquid stratum is given a corona-charge treatment by a corona-charge unit whereby said liquid stratum is charged to a polarity opposite to the charge of the toner particles.

Abstract: Toner dispensing control in xerographic printing, wherein a toner dispenser is controlled during a first period of use by means measuring the exposing radiation applied to the photoconductor, and during a further period of use by means responsive to the relative permeability of the toner mixture. Thus, over-tonering during the running-in period of a new toner mixture is avoided.

Abstract: Bath compositions for bleaching silver halide-containing recording materials contain an N-carboxyalkaneaminoalkane phosphonic acid or a salt thereof.

Abstract: A liquid developer composition that is suitable for rendering visible electrostatically charged areas which composition contains in an electrically insulating non-polar carrier liquid having a volume resistivity of at least 10.sup.9 ohm.cm and a dielectric constant less than 3, dispersed coloring matter acting as toner particles and at least one anionic polymer that includes recurring units incorporating an anionic group together with a non-polymeric counter cation, characterized in that the cation is a selected from the group consisting of:(1) a cationic group which is a protonated tertiary amine group,(2) a quaternary ammonium group, a phosphonium group or a sulphonium group, and(3) a cationic group containing at least one carbon chain residue comprising at least 6 carbon atoms,whereby the anionic polymer is adsorbed with a net negative charge on the toner particles.

Abstract: A silver halide emulsion rich in chloride is described which has grains having a layered grain structure with a core and at least one layer encasing the core.

Abstract: Photographic silver halide emulsion material for use in a dye diffusion transfer process incorporating a non-diffusing compound capable of releasing a diffusible mono-azo dye or dye precursor thereof from a carrier moiety, said compound corresponding to the following general formula (I):(I) CAR--L--G--Dwherein:CAR represents a ballasted carrier moiety,L represents a chemical group cleavable or releasable from the carrier moiety as a function of a redox-reaction or argentolytic reaction taking place in the development of a silver halide emulsion layer under alkaline conditions,G represents a bivalent organic group incorporating at least three aromatic nuclei, selected from the group consisting of homocyclic or heterocyclic aromatic nuclei, with the provisions that L is linked to one end nucleus and that D is linked to the other end nucleus of said bivalent organic group; said linking being by means of a direct bond or by means of a bivalent mono- or polyatomic group, andD is an azo dye part linked to said othe

Abstract: An image to be printed in a CRT or video color printer is sensed to generate red, blue and green signals respectively representing a characteristic of the image in red, blue and green. The signals are processed in a matrix circuit to generate a luminance signal. The red and blue signals are subtracted from the luminance signal in operational amplifiers to obtain unadjusted difference signals. Each of the unadjusted difference signals is multiplied by an adjusting factor which is established using variable resistors and functions to provide level adjustment. The adjusted difference signals obtained in this manner are subtracted from the luminnce signal in respective operational amplifiers to yield modified red and blue signals. The modified red and blue signals are processed together with the luminanace signal in a second matrix circuit to generate a modified green signal.

Abstract: The photographic silver halide recording material contains particles of a hydroxyalkyl-alkyl cellulose dicarboxylic acid semiester having a particle size of from 0.5 to 8 .mu.m and a particle size distribution of up to .+-.2 .mu.m dispersed in a hydrophilic colloid in at least one of its outermost layers.

Abstract: A cover for the light channel for a device for switching-off at the end of its run a magnetic cassette tape with a transparent leader tape, an opening being provided in the bottom part of the cassette for accommodating the light, the opening being defined by a one- or two-part light shaft having slotted light channels for the passage of the beams of light towards the light-receiving elements on the side of the device, the light shaft 5 located only in the bottom part of the cassette being provided with an encircling ledge 8 below the light channels, 6, 7 on which ledge a flexible piece of film 9 rests which is transparent at least in the region of the light channels, or the light shaft, which is divided in the middle and fills out the height of the interior of the cassette housing, has an encircling ledge 8, 10 in each of the top and bottom parts 5, 5 a thereof, outside the region of the light channels, between which a flexible transparent piece of film 12 covering the light channels rests, the piece of film