Photographic printing apparatus

Details Photographic printing apparatus Photographic printing apparatus

1985-03-29

1986-03-18

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Illumination systems or details

35419512, 355 50, 355 64, G03B 2774, G03B 2780

Patent

active

045764735

ABSTRACT:
A plurality of optical systems are disposed on a rotating plate in order to cope with a change in magnification during a printing operation. The optical systems are successively moved to a printing light axis by means of the rotation of the rotating plate. In order to ensure the movement of the optical systems, light receivers are separately disposed inside and outside the rotational locus of the optical systems. Thus, it is possible to carry out an operation for changing the optical systems without any interference.

REFERENCES:
patent: 3487761 (1970-01-01), La Rue, Jr.
patent: 3511565 (1970-05-01), Harman, Jr. et al.
patent: 3649118 (1972-03-01), Yano et al.
patent: 3689149 (1972-09-01), Livingood
patent: 3826571 (1974-07-01), Spence-Bate
patent: 4018526 (1977-04-01), Schroter
patent: 4027968 (1977-06-01), Spence-Bate
patent: 4390270 (1983-06-01), Biedermann et al.

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