Gretag Imaging Ag

Martin Heller

Hugo Knecht

Beat Frick

Rudolf Wacker

A cutting arrangement for a material web, especially photographic copy material in a photographic copier includes a knife roller (,) and a drive (,to,) for reciprocating the knife roller (,) between two turnaround positions (S,, S,) transverse to the material web (M) to be cut, to thereby carry out one cut respectively. At least two starting positions (S,, S,or S,, S,) are provided for each of the two cutting directions which are associated with different widths of the material web (M). The drive (,to,) commences the cutting movement of the knife roller (,) respectively at that starting position (S,, S,or S,, S,) associated for one cutting direction with the respective material web width and moves the knife roller (,) after completion of the cut to the respectively closest turnaround position (S,, S,) and from thereback to the starting position (S,, S,or S,, S,) associated for the other cutting direction with the respective material web width, provided that the latter starting position (S,, S,or S,, S,) does not coincide with a turnaround position (S,, S,). The arrangement of different starting positions for material webs of different width makes time savings of up to over 50% possible.

Cutting arrangement for a material web

The invention relates to an arrangement for the processing of light or photo sensitive material with a printing device. Material separated into individual sections is transportable in a preferred direction of a transporting device. In a material processing device with a moving device, the individual material provided with an image is transported in a predominant direction, the preferred direction and the predominant direction differing from one another at an angle. A device at the end section of the printing device forwards the individual material to the material processing device. In accordance with the invention the forwarding device is positioned in such a way that the individual light or photo sensitive is transferable under the transporting device to the material processing device.

Photo lab with transport arrangement

The invention relates to a test material storage and feed device with a light-proof container, into which either chemical film test strips, or pre-exposed photographic paper sections can be inserted. The container has a delivery mouth for taking the test strips or paper sections out of the container. A connecting device can be provided on the delivery mouth of the container which can be placed against a corresponding feed opening of a printer or a film processor, or can be inserted at least partially into the feed opening.

Test material storage and feed device

The photographic copying apparatus comprises a first exposure arrangement for exposure of photographic negative and positive copy masters and a second exposure arrangement for exposure of screen copy masters onto photographic copy material. The second exposure arrangement includes a cathode ray tube with control system. The cathode ray tube is arranged at approximately a right angle with respect to the exposure light path of the first exposure arrangement. The second exposure arrangement further comprises a color filter assembly, an objective and a mirror for directing the screen copy master emitted by the cathode ray tube to the photographic copy material. The color filter assembly, the objective and the mirror are combined as a structural unit to constitute an imaging optical system, which can be positioned into the exposure light path instead of an reproduction objective of the first exposure arrangement.

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Zurich, Switzerland

Martin Heller