Duplex copying machine

Details Duplex copying machine Duplex copying machine

1978-01-10

1980-08-19

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

271 31, 271 4, 355 24, 355 26, G03G 1500

Patent

active

042181283

ABSTRACT:
A duplex copying machine has an auto document feeder and is capable of duplex copying from originals having images on one side, originals having images on both sides and combinations of the aforementioned two types. In a preferred embodiment of the duplex copying machine, whether an original has images on one side only or on both sides is detected so as to obtain a duplex copy from a duplex original and a one-side copy from a one-side original.

REFERENCES:
patent: 3700231 (1972-10-01), Aasen et al.
patent: 3840222 (1974-10-01), Fowlie
patent: 3980406 (1976-09-01), Lang
patent: 3999852 (1976-12-01), Katayama et al.
patent: 4023791 (1977-05-01), Hori et al.
patent: 4050805 (1977-09-01), Hage
patent: 4062533 (1977-12-01), Greenberg et al.
patent: 4099150 (1978-07-01), Connin

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