Extended range variable magnification reproduction machine

Details Extended range variable magnification reproduction machine Extended range variable magnification reproduction machine

1975-06-27

1978-06-20

Braun, Fred L.

Photocopying

Including fiber optics

355 57, 355 66, 355 77, G03G 1528, G03B 2734

Patent

active

040958809

ABSTRACT:
A document reproduction machine having an extended range of magnifications employs a scanning optical system which is controlled as to scanning speed and distance of travel by the selected magnification. In an extended reduction copying range the speed of the scanning optical system is automatically increased in proportion to the selected magnification reduction, but the increase in scanning distance is limited to the platen size. A clutch mechanism is employed to terminate the normally increasing scanning distance in the extended reduction range.

REFERENCES:
patent: 3542467 (1970-11-01), Ferguson et al.
patent: 3614222 (1971-10-01), Post et al.
patent: 3829209 (1974-08-01), Buddendeck et al.
patent: 3894801 (1975-07-01), Namba
patent: 3897148 (1975-07-01), Ritchie et al.

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