Photocopying – Projection printing and copying cameras – Focus or magnification control
Patent
1983-06-27
1986-06-10
Hix, L. T.
Photocopying
Projection printing and copying cameras
Focus or magnification control
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
Adachi Hideki
Hirose Masayuki
Komiya Yutaka
Miyata Masanori
Tomosada Masahiro
Canon Kabushiki Kaisha
Hix L. T,.
Rutledge Della J.
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