摘要:
An x-ray film sheet cassette, comprises a bottom part, and a cover part which are turnable relative to one another and lockable with one another, an element forming a guiding surface in the bottom part for guiding a film sheet during its insertion into the cassette between the bottom part and the cover part, a suction cup arranged in the bottom part for attracting a film sheet and having an upper edge, and a spring element arranged in the bottom part and formed so that when the cover part is open, the spring element lifts the guiding surface above a level of the upper edge of the suction cup, and when the cover is closed it presses the guiding surface and the spring element downwardly so that the suction cup is brought into contact with a film sheet.
摘要:
An arrangement for unloading and loading of x-ray sheet film cassettes of standardized but different sizes of their flat sides which also can be used for receiving different sheet film sorts and reloadable with respective sheet film sorts, comprises a light-tight closeable shaft for receiving a cassette, transporting unit for inserting and withdrawing of the cassettes, unit for positioning the cassette at a cassette corner which is the same for all cassettes, a mechanically-electronic comparison device for determining the format of a cassette, an opening device for the cassette, unit for withdrawing a film and inserting of a new film into the cassette, and unit for automatically distinguishing of cassette types with the same sizes or size regions and loadable with different film sorts and including at least one outwardly sensible marking provided on the cassettes of at least one type, at least one sensor arranged to sense the marking with a positioned cassette, and a comparison device which is connected for the sensor for automatic selection of a sheet film size or sort for further loading.
摘要:
The X-ray sheet film cassette has a top part hinged to a base part. The bottom of the base part is provided with a frame enclosing a film supporting plate through which the radiation is transmitted. The supporting plate has a laminated structure including two face plates of thermoplastically bonded carbon fibers and a comparatively thicker intermediate plate of a synthetic hard foam rubber sandwiched between the face plates and being glued thereto. The face plates are considerably thinner than the intermediate plate in the laminated supporting plate of the present invention.
摘要:
An X-ray sheet film cassette has an upper cassette part, a lower cassette part adapted to face a radiation source and connected with the upper cassette part so that the cassette can be opened and closed. The lower cassette part has a frame and a plate connected with the frame. The plate includes an intermediate plate portion and two thin outer plate portions surrounding the intermediate plate portion. At least one of the outer plate portions extends outwardly beyond the intermediate plate portion at least at one edge of the plate and projects toward the interior of the X-ray sheet film cassette so as to form a web.
摘要:
A method of checking the presence or absence of an X-ray sheet film in a cassette inserted into an automatic film unloading or loading apparatus, utilizes a proximity sensor arranged in the apparatus to sense position changes of a sheet film supporting foil which is arranged for a limited movement in the cassette. The proximity sensor is connected to an electronic control device which controls the operational sequence of the unloading and loading apparatus. When the gripping member preferably in the form of a suction cup seizes a sheet film on the supporting means in the cassette, the supporting means remain in its rest position after the sheet film is removed. However, if no film is present on the supporting means, the suction cup seizes the supporting means and displaces the same from its rest position. This change is sensed by the sensor and a signal is delivered to the electronic control circuit which modifies the operational sequence accordingly.
摘要:
An indicating arrangement for indicating the absence or presence of film in the interior of an X-ray film cassette includes an indicating member movably mounted on one portion of the cassette. Another portion of the cassette which is juxtaposed with the one portion has a recess therein, in which the inner end of the indicating element is received when film is absent from the internal space of the cassette, but which is covered by the film when the same is properly introduced into the internal space of the cassette so that the inner end of the indicating element is prevented from entering this recess. The position of the indicating element can be perceived at the exterior of the one portion of the cassette in a tactile or visual manner. The indicating element may be a discrete element mounted on the cassette, or a one-piece part of a flexible portion of the cassette. In either event, the indicating element is guided in a rigid portion of the cassette so that the position of the indicating element relative to this rigid portion may be ascertained either by touch or by observation.
摘要:
A cassette for an x-ray film coated with a stimulable phosphor layer is formed so that a cassette memory which carries storable, recordable, readable and erasable data is rigidly attached to the cassette at the positioned spaced a predetermined distance from a given cassette corner. This position is the same for all cassettes of the same type and different formats.
摘要:
A device for loading and unloading X-ray film cassettes into a light-sealed compartment includes a device for opening a lid of the cassette inserted in the compartment. The lid-opening device comprises a motor-driven control disc which via a crank rod shifts a support carrying a cassette positioning device, and a lid-opening hook which can swing in two normal directions and cooperates with the lid of the cassette to open the latter.
摘要:
An X-ray film cassette has body and cover parts movable relative to one another between open and closed positions and provided with locking elements, magnetic and counter plates associated with these parts and attractable to one another, at least one reinforcing foil arranged to be brought together with a film between the magnetic and counter plates, wherein the reinforcing foil has a surface arranged to face toward the film and being rough with a roughness of between 10 and 60 microns.
摘要:
An isocyanate-terminated prepolymer C having an NCO content of from ≧26% by mass to ≦31.0% by mass is obtainable from the reaction of an isocyanate composition A having a viscosity at 25° C. of from ≧60 mPas to ≦800 mPas, comprising from ≧25% by mass to ≦60% by mass MDI and from ≧40% by mass to ≦75% by mass pMDI, wherein the sum of the amounts of those components is ≦100% by mass, with a bifunctional polyester ether polyol B having an OH number of ≧200 mg(KOH)/g and ≦500 mg(KOH)/g, obtained from the reaction of a dicarboxylic acid/dicarboxylic acid derivative with at least one polyol and with an epoxide, wherein the polyester ether polyol B is used in amounts of from ≧1.5% by mass to ≦6.0% by mass, based on the sum of the masses of A and B. The invention further provides a PUR/PIR polymer produced from the prepolymer C, its use and composite elements based thereon.