Photographic copying apparatus

Details Photographic copying apparatus Photographic copying apparatus

1995-09-15

1997-08-26

Grimley, Arthur T.

Photocopying

Projection printing and copying cameras

With cathode ray tube for light source

355 46, G03B 2746, G03B 2732

Patent

active

056615418

ABSTRACT:
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.

REFERENCES:
patent: 4742375 (1988-05-01), Kogane et al.
patent: 4786944 (1988-11-01), Sakamoto et al.
patent: 4875071 (1989-10-01), Shiota
patent: 4993773 (1991-02-01), Shiota et al.
patent: 5036402 (1991-07-01), Shiota
Brochure entitled "Masterlab--Retaining your competition edge in photofinishing" by Gretag Imaging, perspectus 98.25.68 BR9402en, 9.93, 10 pages.

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