Abstract: Plastics spool container for magnetic tapes, in particular video tapes provided with a handle being moulded on one half of the housing, a closure mechanism at the front and a one-armed locking toggle to secure the closure mechanism.

Abstract: A cassette or an analogous supports for sheet-like X-ray films has a bottom wall and a top wall which latter is connected to the bottom wall by a hinge. One of the walls carries a magnetic plate which is overlapped by a first intensifier screen for the X-ray film. The other wall carries a flat flexible receptacle for a ferromagnetic layer therewithin, and the receptacle is overlapped by a second intensifier screen. When a film is inserted between the two screens, the cassette is closed whereby the magnetic layer attracts the ferromagnetic layer with the result that the two screens are biased against the respective sides of the film therebetween. The second screen may constitute an integral part of the receptacle which latter consists of a material, such as paper or synthetic plastic, that is permeable to X-rays.

Abstract: The invention relates to an apparatus and a method for the completely automatic lacquering of strip-form materials, whereby at least one unwinding device is provided with a fast running positioning device, an application roller and an opposing pressure roller are designed in such a way that they grasp the strip-form material and push it centered through the dryer and through a guide device and a winding up device is provided with at least one receiving spool which catches the strip-form material and winds it up.

Abstract: In a color photographic recording material for the dye diffusion transfer process a transparent layer support, a light sensitive element, a light-reflecting opaque layer and an image-receiving layer form in that order a non-disconnectable assembly of layers and the light-sensitive element contains at least one silver halide emulsion layer and associated therewith an electron donor compound and a non-diffusing reducible color-providing compound that when reduced liberates a diffusible dye under alkaline development conditions. The material provides "development control on viewing" when the first part, e.g. about 2 minutes, of total development is conducted in dark and is completed at ambient light.

Abstract: A color copier has a control circuit for controlling the exposure of an original to be copied. The control circuit has a processing channel for each of the three primary colors. Each of the channels is associated with photodetectors which is sensitive to the color of the respective channel. The photodetectors sense the intensity of the light in the respective color transmitted through the original and generate signals indicative of the density of the original in that color. The density of the original in each color is compared with the neutral gray density of the original. The difference between the density of each color and the neutral gray density is used to calculate an undercorrection factor for the respective color. The undercorrection factor is used to regulate the exposure time for light of the respective color or the intensity of light of the respective color during exposure.

Abstract: A motion picture apparatus is provided which comprises a rotary disc shutter having a shutter sector and actuated by an electric drive device. A claw mechanism is controlled by the electric drive device and provides for transport of a film. An electromagnetic solenoid provides for stopping the film in position. A plunger for the solenoid is provided for disengaging the claw transport mechanism after a frame transport phase upon generation of an appropriate signal. A position signal generator provides a shutter position signal depending on the position of the shutter sector and a marking signal generator provides a signal depending on the detection of a marking placed on the film. The position signal generator is connected to a first input of an AND gate and the marking signal generator is connected to a second input of the AND gate. The output of the AND gate is connected to the solenoid.The apparatus and a corresponding method provide for stopping a film without interference in proper position.

Abstract: An arrangement for transferring photosensitive materials from cassettes of different types and configurations into the interior of a handling machine, such as a developing machine, includes an external wall of the machine which is provided with an input slot, and a plurality of support members which are interchangeably mountable, in a light-sealing manner, at a region of the external wall which surrounds the input slot. Each of the support members is provided with a through opening which registers with the input slot in the mounted position of the respective support member. Each of the support members has a receiving side which is configurated compatibly with a portion of a cassette of a certain type so that the latter portion can be introduced into the receiving side of its associated support member and establish a light-sealing contact therewith. Holding members may be provided on the support member which cooperate with compatible portions of the cassette to hold the latter on the support member.

Abstract: A cassette for holding and dispensing a roll of web material that is provided with locking means for preventing rotation of the roll prior to initial withdrawal of material from the roll, the locking means being formed by a generally rigid locking member with one end portion frictionally engaged within the core of the roll, and the other end portion non-rotationally connected with a cassette end wall, and a weakened zone interconnecting those end portions, and adapted to rupture upon rotation of the core incidental to the initial withdrawal of material from the roll.

Abstract: An electrostatic copying device comprises a transparent support plate onto which an original to be copied is placed. A slide carrying a recording cylinder provided on its peripheral surface with a photosensitive layer is movable beneath and parallel to the transparent support plate. At least one gear coaxially fixed to the recording cylinder meshes with a rack extending parallel to the path of movement of the slide to rotate the recording cylinder during movement of the slide. The slide carries also a raster objective stepwise scanning the original during movement of the slide to produce a latent image of the original on the photosensitive peripheral surface of the recording cylinder, which picture is transferred to an endless dielectric band forming an intermediate recording carrier and from the latter the picture is transferred to a photosensitive paper sheet fed onto the band along which also a plurality of usual treating stations are arranged for developing the image on the paper sheet.

Abstract: A color print machine, which makes prints from developed color film, is provided with an automatic exposure control system. A memory stores control signals for adjusting the automatic exposure control system for predetermined differing color film types and is addressable for selecting the control signals to be furnished for the color film type involved. The color film is provided with machine-readable film-type identifying code markings prior to printing. A code-marking scanner performs machine-reading of the film-type identifying code markings and generates corresponding film-type signals. The memory is addressed, thereby selecting the control signals to be furnished to the automatic exposure control system for the particular color film type involved, in automatic response to the film-type signals.

Abstract: An arrangement for introducing photosensitive strips into and for transporting the same through the interior of a developing machine includes an attaching compartment at the input part of the machine adjacent to a region into which the leading end of the respective strip is introduced through an input slot, the compartment having two opposite open ends one communicating with the exterior and the other with the interior of the machine. A lid is mounted on the walls bounding the compartment for pivoting between its open and closed positions and is latched in its closed position by a latching device. A separating slide is mounted on rails arranged at the other end for movement across the same between its open and closed positions. The opening of the lid is accomplished by gripping a handgrip which actuates a switch that commences the operation of a drive moving the slide into its closed position. Then, the latching device releases the lid, and the lid is opened.

Abstract: Magnetic recording medium using water as dispersion medium. The magnetic layer comprises as binder an aqueous dispersion of polyurethane having functional groups capable of salt formation and a magnetic pigment. The volumetric ratio of magnetic pigment to polyurethane in terms of solids content is in the range of 0.7:1 to 1.4:1.

Abstract: An arrangement for cleaning band-shaped data carriers, such as photographic film, has at least one brush element arranged to move relative to a data carrier so as to remove dust particles from the latter, an aspirating element for aspirating the thus removed particles, a high-frequency electric motor driving the aspirating means and having a frequency which is a multiple of the frequency of an electric network, and a frequency amplifier arranged to connect the electric motor with the electric network.

Abstract: Silver halide emulsions, which have been precipitated in the presence of polymers having recurring units with a 8-hydroxy quinoline structure are suitable for the preparation of vesicular images.

Abstract: Photographic silver halide material suitable for use in the silver complex diffusion transfer reversal process for the production of a continuous tone positive silver image (sensitometric curve I of the drawing) on an image-receiving material and a continuous tone negative silver image (sensitometric curve II of the drawing) in the photographic silver halide material itself, wherein the negative silver image is usable per se for serving as an internegative in a photographic printing process. In the photographic material on each side of a transparent support a silver halide emulsion layer high in silver chloride is present with a different developing agent composition to yield from the two emulsion layers together the total silver image density and average gradient desired in the negative image.

Abstract: The invention relates to an externally hooked storage spool for rotary winding on and unwinding elastic materials comprising a cylindrical core and two flanges, the core having wing-like catching members for catching the end of the elastic material while the spool rotates and one holding hook and one pin to prevent unhooking in an opening between the wing like catching members and the end of the strip is provided with a hammer-shaped first cut in which are produced at least one holding hole and one hole to prevent unhooking.

Abstract: A laminate for conversion of X-rays into radiation that darkens X-ray films has a flexible plate which is disposed between a fluorescent layer and a ferromagnetic layer. The latter enables the plate and the fluorescent layer to bear against an X-ray film in a cassette or at an exposure station for X-ray films by being attracted to a plate-like permanent magnet. The ferromagnetic layer is permanently bonded to the respective side of the flexible plate or is simply confined between the plate and an outer layer which is permeable to X-rays and whose marginal portions extend beyond the ferromagnetic layer and are bonded to the respective marginal portions of the plate. Alternatively, the ferromagnetic layer can be inserted into a sealable envelope or bag which is bonded to the respective side of the plate, namely, to that side of the plate which faces away from the fluorescent layer.

Abstract: A cassette for holding and rotatably dispensing a roll of web material carried on a rotatable roll is provided with a locking member connecting between the rotatable roll and the cassette body and having a cross-sectionally reduced zone that may be ruptured by rotation of the roll incidental to the initial withdrawal of the web material from the cassette, the reduced zone having at least one inner sub-zone of lesser rupture resistance than the outer sub-zones on each side thereof, e.g., an aperture whereby the reduced zone ruptures upon rotation of the roll through a lesser angle than in the absence of the sub-zone.

Abstract: The present invention relates to a method and to a processing band for processing a sheet or strip of photographic material (1) which has been image exposed and is brought into surface contact, in the presence of water, with a carrier (2) which is impregnated with the required processing chemicals. The photographic material (1) which has been image exposed is repeatedly moved along a closed path and brought into surface contact with the processing band (2) along a specified portion of said path in the presence of water, the processing band (2) having at least wo sections with different processing functions (A, B, C . . . ) arranged one behind the other, with which every portion of the photographic material (1) comes successively into contact.

Abstract: In a process for hardening gelatine containing layers of color photographic multi-layered materials which have a paper laminated with a polyolefin layer arranged on both sides a substrate 1,3,5-triacrylohexahydro-1,3,5-triazine and a polyhydric aliphatic alcohol with 3 to 10 carbon atoms are added to the casting solutions and the casting solutions are then applied to a corona irradiated surface of the substrate.