Copying apparatus

Photocopying – Projection printing and copying cameras – Focus or magnification control

Patent

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Details

G03B 2752

Patent

active

045939993

ABSTRACT:
A copying apparatus comprises an optical lens, drive means for driving the optical lens, and control means for controlling the drive means. The control means changes over the output of the drive means in accordance with the distance of movement of the optical lens.

REFERENCES:
patent: 3941978 (1976-03-01), Huston et al.
patent: 4254371 (1981-03-01), Scholten
patent: 4332461 (1982-06-01), Cail et al.
patent: 4412737 (1983-11-01), Iwanade et al.
patent: 4448517 (1984-05-01), Hayashi

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