Recirculating documents duplex copier

Details Recirculating documents duplex copier Recirculating documents duplex copier

1980-07-28

1982-05-18

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

271 31, 355 3SH, 355 23, 355 26, G03G 1500

Patent

active

043301975

ABSTRACT:
An automatic pre-collation duplex copier in which original documents having either an odd or even number of pages may be recirculatively copied in reverse serial order yet provide properly collated output duplex copy sets. A simplex/duplex copying system is disclosed in which, when an odd number of document sheets are detected in a first, non-copying, circulation of the document sheets, the copying of the last and subsequent alternate document sheets is inhibited during the first copying circulation, whereas if an even number of document sheets are detected, the copying of the second and subsequent alternate document sheets is inhibited during this first copying circulation, and these different copying sequences are reversed for the last copying circulation. All document sheets are copied during the intermediate circulations. A compatible duplex/duplex copying system is also disclosed.

REFERENCES:
patent: 3588472 (1971-06-01), Glaster et al.
patent: 3937454 (1976-02-01), Colwill
patent: 4076408 (1978-02-01), Reid et al.
patent: 4098551 (1978-07-01), Komori et al.
patent: 4099150 (1978-07-01), Connin
patent: 4116558 (1978-09-01), Adamek et al.
patent: 4125325 (1978-11-01), Batchelor et al.
patent: 4140387 (1979-02-01), Gustafson
patent: 4158500 (1979-06-01), DiFrancesco et al.
patent: 4162844 (1979-07-01), Traister et al.
patent: 4166614 (1979-09-01), Hamlin et al.

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