Variable magnification apparatus with lens position control

Details Variable magnification apparatus with lens position control Variable magnification apparatus with lens position control

1982-07-28

1985-11-12

Grimley, A. T.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 56, G03G 1500, G03B 2734

Patent

active

045524505

ABSTRACT:
A copying apparatus having a lens position control device capable of setting the copying lens in plural positions for obtaining plural image magnification ratios. The lens position is determined by a control device in response to signals from a lens position detector and pulse signals from a pulse signal generator.

REFERENCES:
patent: 4351606 (1982-09-01), Franko

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