Variable speed scanning system

Details Variable speed scanning system Variable speed scanning system

1981-03-09

1983-01-18

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Focus or magnification control

355 8, 355 57, G03B 2752

Patent

active

043689760

ABSTRACT:
A drive for providing a continuous range of magnifications in a copier system. The drive includes a variable speed transmission whose output can be adjusted over a continuous range and then fixed to produce a constant scan rate for transmitting a document image to a photoreceptor. The transmission has two pairs of angled or conical capstans coupled by drive belts or cables whose initial position with respect to the capstans dictate the transmission speed. To change speed the transmission is decoupled from a copier drive motor and one capstan pair is rotated with respect to the second pair. The velocity profile of the rotated pair is thereby charged to produce a desired change in magnification. An alternate embodiment is disclosed wherein a cam and cam following surface in conjunction with a single angled or conical capstan provide the adjustable scanning drive.

REFERENCES:
patent: 1344896 (1920-06-01), Jobke
patent: 1726350 (1929-08-01), Hershberg
patent: 3049968 (1962-08-01), Johanson
patent: 3146661 (1964-09-01), Young
patent: 3542467 (1970-11-01), Ferguson et al.
patent: 3694060 (1972-09-01), Tadie
patent: 3778147 (1973-12-01), Reehil et al.
patent: 3884574 (1975-05-01), Doi et al.
patent: 3897148 (1975-07-01), Ritchie et al.
patent: 4013361 (1977-03-01), Allis
patent: 4027963 (1977-06-01), Hoppner et al.
patent: 4029409 (1977-06-01), Spinelli
patent: 4032231 (1977-06-01), Zucker
patent: 4093374 (1978-06-01), Zucker et al.
patent: 4095880 (1978-06-01), Shogren et al.
patent: 4105326 (1978-08-01), Mochimaru
patent: 4120578 (1978-10-01), Daniels et al.
patent: 4124293 (1978-11-01), Daniels et al.
patent: 4142793 (1979-03-01), Schilling
patent: 4279497 (1981-07-01), Satomi

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