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

Original moves continuously

355 55, 355 64, 355 75, G03B 2748, G03B 2750

Patent

active

045764719

ABSTRACT:
A photographic printing apparatus is capable of effecting printing on photographic paper from various types of negative film including a negative film of continuous length by replacing a negative film carrier with another. When the negative film carrier is at its printing position, a light receiver opposes the printing light axis, and only an optical system is moved vertically to cope with a change in magnification during a printing operation. At the time of retraction of the negative film carrier, the light receiver is raised together with the optical system, thereby facilitating the replacement of the negative film carrier.

REFERENCES:
patent: 3511565 (1970-05-01), Harman, Jr. et al.
patent: 3689149 (1972-09-01), Livingood

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