Optical member drive system for copying machine

Details Optical member drive system for copying machine Optical member drive system for copying machine

1986-04-04

1987-02-10

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Focus or magnification control

G03B 2736, G03B 2738

Patent

active

046419578

ABSTRACT:
An optical drive system for a copying machine or the like including a projector lens assembly movable along a predetermined path, which system comprises a drive unit for moving the lens assembly, a device for, when the lens assembly is moved along the predetermined path which is divided into a predetermined number of zones, setting a speed at any one of the zones to a value appropriate to the magnitude of a load acting on the drive unit, and a control for speed controlling the drive unit in accordance with the speed set by said setting device.

REFERENCES:
patent: 3897148 (1975-07-01), Ritchie et al.
patent: 4209248 (1980-06-01), Gibson et al.
patent: 4243311 (1981-01-01), Tohyama et al.
patent: 4323308 (1982-04-01), Kitajima et al.
patent: 4332461 (1982-06-01), Cail et al.
patent: 4371254 (1983-02-01), Beery
patent: 4397544 (1983-08-01), Yajima et al.
patent: 4552453 (1985-11-01), Iwamoto et al.

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