Cam-operated scanning optics drive for a continuously variable m

Details Cam-operated scanning optics drive for a continuously variable m Cam-operated scanning optics drive for a continuously variable m

1977-07-25

1978-11-07

Griffin, Donald A.

Photocopying

Projection printing and copying cameras

Focus or magnification control

G03B 2736

Patent

active

041242939

ABSTRACT:
A continuously variable magnification optical system for use in document copier machines wherein multiple cams are used to provide motion input to the continuously variable drive system. Multiple cams are used in order to provide capability to the machine of copying at 1:1 reduction on various size copy papers without causing the scanning mechanism to scan beyond the usable length of the document glass. A cam-select mechanism is disclosed.

REFERENCES:
patent: 3614222 (1971-10-01), Post et al.
patent: 3640615 (1972-02-01), Schaeffer
patent: 3792926 (1974-02-01), Knechtel et al.
patent: 3897148 (1975-07-01), Ritchie et al.
patent: 3950090 (1976-04-01), Washio et al.
patent: 4007986 (1977-02-01), Komori et al.

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