Abstract: A cassette for a stack of superimposed sheets of X-ray film has a bottom wall, four sidewalls disposed at the upper side of and defining with the bottom wall a rectangular or square chamber for at least one stack of sheets, and a cover which is pivotally connected to one of the sidewalls and is movable between an open position to afford access to the chamber and a closed position in which it cooperates with the sidewalls to prevent penetration of light into the chamber. The top surface of at least one sidewall is provided with one or more markers (e.g., in the form of a row of triangular indicia) made of or containing a material which permits ready visual detection of the marker in a darkroom whereby a person looking at the marker can ascertain at a glance whether or not one or more uppermost sheets of a stack in the chamber are misaligned so that they overlie the top surface or surfaces of one or more sidewalls and must be reoriented prior to pivoting of the cover to closed position.

Abstract: A supply magazine has a drawer-shaped, upwardly open box for introducing a sheet film stack in a light-tight envelope and for withdrawing individual sheet films after removal of the envelope, a cover part movable relative to the box, a unit for winding the envelope in a closed condition of the magazine. The cover part is formed as a flat parallelepiped which is open at its front small side and such that the box which is open at its upper side can be moved in and out of the cover part, a locking mechanism operates for locking the cover part and the box when the box is moved in. A lockable and swingable flap cover is provided on a flat side of the cover part corresponding to the upper side of the box so that when the box is moved in the cover part a sheet film stack can be inserted in the box through the flap cover.

Abstract: A daylight loading film sheet package has a stack of film sheets enclosed within a wrapper having front and rear panels covering the front and rear faces of the film stack and projecting side extensions on at least three sides of the panels which are folded into contacting relation and adhered together in close proximity to the corresponding sides of the stack to cover such stack sides. One of the wrapper panels has a sheet-dispensing opening therein with one edge adjacent one stack side which is generally coextensive in length with that stack side, such opening extending from the edge into the panel to permit an outermost film sheet to be accessed and withdrawn from the stack therethrough.

Abstract: A device for the removal of sheet-like films from an X-ray film cassette or a film magazine by means of at least one sucker which has a suction lip with a frustoconical inner surface by which a front edge of a film is lifted from the stack. The suction lip has at the inner surface in the proximity of the mouth of the suction conduit a flat projection extended towards the film being lifted but is spaced therefrom.

Abstract: A light-tight, tearable covering for a stack of sheet films to be inserted into a supply magazine of a sheet film-loading device, with the supply magazine provided with a pulling device for removing the covering after closing the supply magazine, the covering has a flat side, a winding flap engageable by the pulling device, a closure flap releasably held on the flat side, and a flat recess-forming portion provided on the flat side and formed so that the closure flap in a wrapped condition is insertable into the recess-forming portion.

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 device for unloading X-ray film cassette a nozzle is provided, positioned at a front side of the cassette to be unloaded, for blowing air into a gap between a slightly open lid and the remaining part of the cassette. The nozzle is switched on for short intervals to ensure blow air stream which generate vacuum under the film stuck to the lid to pull the film back towards the bottom of the cassette so that a reliable separation of the film by a sucker is ensured.

Abstract: In a device for loading and unloading X-ray film cassettes at least one air blowing nozzle is provided which is positioned at the front open end of the cassette below the film inserting rollers so as to generate an air cushion between the film being inserted into the cassette and the bottom wall of the cassette during the insertion process.

Abstract: A film supplying magazine which receives a pack of film sheets, covered with a light-tight sheathing and is insertable into a device which removes from said pack individual film sheets, comprises a box receiving a film pack, and a cover for closing the box. The sheathing has a winding flap while the magazine has an externally operated rotatable winding shaft to which the flap of the sheathing is connected so that the flap together with the sheathing is pulled off the pack and wound on the shaft when the latter is rotated. Velcro tapes are provided at the free end of the flap and at a portion of the winding shaft, which ensure an automatic connection between the flap and the shaft.

Abstract: A light-proof tearable sheathing for a pack of photographic or X-ray sheet films insertable in a film supply magazine of a film cassette-loading device includes a winding flap which is wound on a shaft of the winding device to pull the sheathing from the film pack, a folded connection flap opposite to the winding flap and glued to the sheathing by a glue tape, and a tearing tape provided between two spaced strips of the glue tape and tearable from the sheathing to open the latter for the removal therefrom of individual film sheets.

Abstract: A supply magazine for insertion in an arrangement for removing individual sheet films, for example X-ray sheet films, arranged in a stack in a light-tight wrapping, comprises a cover, a box which is at least partially open and is closable by the cover, and being formed for accommodating a stack located in a wrapping, a winding device provided with a winding shaft which is driven from outside and formed for suspending and winding a winding flap of the wrapping together with the latter after closing of the box, and an indicating device including a movable sensing member which abuts with spring biasing against the winding shaft in the region of the winding flap, an observation opening formed in a part of the box which supports the winding shaft and arranged so that the sensing member is visible through the observation window, and a light sealing provided between the winding shaft and the observation window.

Abstract: A camera has a film transport device for gradually advancing a one-edge perforated light sensitive film over a picture gate with a support face, and a device for illuminating a mark on the film and including an opening which is formed in the support face at a side of a not perforated edge of the film and forms first edges on the support face and a second edge which faces toward a picture gate and lies deeper than the first edges.

Abstract: The reproducing apparatus, such as a motion-picture film projector, stops recording medium transport in response to interrupt-transport frame markings on the recording medium and reproduces the thusly marked image frames as still images. Interrupt-transport frame markings are provided at the terminal frame of each motion-picture scene on the recording medium, or at each still-shot image frame on the recording medium, or both. The user of the reproducing apparatus can select automatic reproduction of motion-picture scenes interspersed with automatic still reproduction of still shots, and can additionally select automatic still reproduction of the terminal frame of each motion-picture scene.

Abstract: The user of a motion-picture camera selects between motion-picture and single-exposure operation, and presses a release member to initiate shooting, letting go of it to terminate motion-picture shooting. Each time the user lets go of the release member, an internal device provides an interrupt-transport marking alongside the just exposed film frame, or phase shifted relative thereto. Alternatively, the interrupt-transport marking is provided the next time the user presses the release member. In this way, the terminal frame of each motion-picture scene, and each and every one of the interspersed single-exposure shots, is provided with an interrupt-transport frame marking. Thus, if the film is run through a reproducing apparatus provided with a marking detector, detection of each interrupt-transport marking during motion-picture reproduction causes the terminal frame of each motion-picture scene, and also each one of the still shots, to be persistently reproduced as a still image.