Agfa-gevaert Ag

Agfa-gevaert

Agfa Gevaert Nv

Afga-gevaert Aktiengesellschaft

Ernst Widemann

Manfred Schmidt

Walter Bauer

Adolf Fleck

Rudy Van Den Bergh

Heinz Backhaus

Jurgen Van Limbergen

Alfons Kastl

Dirk Peeters

Johann Zanner

Wilfried E Muylle

Rudolf Loistl

Jozef Leonard Van Engeland

Nikolaus Jelinek

Franz Ertl

Klaus Lehnert

Herman L Cornelissen

Rudolph Loistl

Luc E Onghena

Geert J Clauwaert

Eric P De Clercq

A cassette assembly comprising an X-ray cassette, with a tube side and a cover, and an intensifying screen wherein the cassette assembly further comprises a compensation element adapted to the intensifying screen so as to have a cassette assembly with predetermined X-ray absorption.

Cassette assembly for use with roentgen apparatus with automatic exposure control

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.

X-ray sheet film cassette

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stack side, such opening extending from the edge into the panel to permit an outermost film sheet to be accessed and withdrawn from the stack therethrough. The dispensing opening is light-tightly covered by a flexible sheet closure attached at one end to the other wrapper panel adjacent the one stack side and overlying the opening with its side margins adhered to the folded side extensions of the panel containing the opening, the sheet closure being adhered to the panel beyond the opening and terminating in a free end to facilitate its stripping removal from the opening.

Daylight-loading film sheet package

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.

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.

Method of checking the presence or absence of an X-ray sheet film in a

In a feedpipe of a container for refilling a photographic developing tank with a developer radial discharge holes are provided in the region of a valve mounted at the lower end of the feedpipe extended outwardly of the container. The developer liquid is discharged into the valve and then into the tank through these radial holes. To prevent overflowing of the liquid through these holes meshed elements are inserted into the radial holes.

Feedpipe for a refilling container

A drying arrangement for strips or sheets of photosensitive material includes a pair of infrared heating rods which are located on opposite sides and extend transversely of the path of travel of the photosensitive material. A parabolic reflector is associated with each of the heating rods and serves to direct radiant energy from the same onto the photosensitive material. The heating rods lie at the focal points of the respective parabolic reflectors. Each of the reflectors has a symmetry plane which is inclined with reference to the path of the photosensitive material in such a manner that the line of intersection of the symmetry plane and the path is situated downstream of the location where a perpendicular from the focal point of the reflector to the path intersects the latter. By virtue of this arrangement, more radiant energy is directed to the upstream portion of the drying arrangement than to the downstream portion thereof. As a result, a thermal gradient exists in the drying arrangement. This gradient corresponds to the degree of dryness of the photosensitive material. Thus, the radiant energy is most intense in that portion of the drying arrangement where the photosensitive material carries the most liquid and least intense in that portion of the drying arrangement where the photosensitive material is virtually dry.

Drying arrangement for photosensitive articles

Growing community of inventors

Dachau, Germany

Ernst Widemann