Copying machine

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

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Details

355 56, 355 57, 355 14R, 355 8, G03B 2752

Patent

active

047680660

ABSTRACT:
The present invention relates to a copying machine for producing copies of variable magnification. The copying machine displays numerical values of a linear magnification and an area magification. The area magnification is square of the linear magnification. Furthermore the copying machine can be inputted arbitrary numerical values as the linear magnifications and the area magnifications.

REFERENCES:
patent: 4270173 (1981-05-01), Suttler
patent: 4533233 (1985-08-01), Kimura et al.
patent: 4543643 (1985-09-01), Shibukazi et al.
patent: 4575227 (1986-03-01), Ito et al.
patent: 4582419 (1986-04-01), Tanaka
patent: 4624552 (1986-11-01), Asako
patent: 4644499 (1987-02-01), Shibazaki et al.

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