Paper feeder and an image forming apparatus provided with the sa

Details Paper feeder and an image forming apparatus provided with the sa Paper feeder and an image forming apparatus provided with the sa

1992-12-07

1994-07-26

Bollinger, David H.

Sheet feeding or delivering

Feeding

Separators

271258, 271265, B65H 708

Patent

active

053322070

ABSTRACT:
A paper feeder is removably attached to an image forming apparatus having a document setter in which a document to be copied is set. The feeder feeds copy paper to the image forming apparatus. A document detector is mounted on one lateral side of the document setter of the image forming apparatus in a position facing a corresponding lateral side end of the document. The document detector detects whether the document is set properly in the document setter. A determining arrangement determines the presence or absence of the document in the document setter on the basis of the detection result of the document detector. A warning arrangement notifies an operator of an error in setting of the document, in the absence of a determination of the presence of the document.

REFERENCES:
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patent: 4400085 (1983-08-01), Nezu
patent: 4548401 (1985-10-01), Nishikawa
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patent: 4849788 (1989-07-01), Prebola
patent: 4851885 (1989-07-01), Kurosaki
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patent: 5072923 (1991-12-01), Coy
patent: 5086319 (1992-02-01), Carolan
patent: 5192071 (1993-03-01), Kodama
Ho, R. Y., "Document Registration Sensor Device", I.B.M. Technical Disclosure Bulletin. vol. 22, No. 4, pp. 1366-1367. (Sep. 1979).

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