Apparatus for controlling optical system for copying machine

Details Apparatus for controlling optical system for copying machine Apparatus for controlling optical system for copying machine

1983-07-26

1985-04-30

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 14R, 355 8, 355 55, G03G 1500

Patent

active

045140804

ABSTRACT:
A memory stores values representing distances from a predetermined reference position to positions corresponding to a plurality of selectable reduction/magnification factors. Upon the selection of a desired reduction/magnification factor, the current and desired positional values, both referenced to the predetermined reference position, are compared to obtain a signal representing the distance and direction which the optical system must be moved.

REFERENCES:
patent: 4323308 (1982-04-01), Kitajima
patent: 4332461 (1982-06-01), Cail et al.
patent: 4412737 (1983-11-01), Iwanade et al.
patent: 4441805 (1984-04-01), Smith

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