Photographic copying apparatus

Details Photographic copying apparatus Photographic copying apparatus

G - Physics

03

B

G03B 27/32 (2006.01) G03B 15/00 (2006.01) G03B 27/46 (2006.01)

Patent

CA 2158224

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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