Sheet feeding device

Details Sheet feeding device Sheet feeding device

1990-11-08

1992-04-21

Schacher, Richard A.

Sheet feeding or delivering

Feeding

Separators

271126, B65H 346

Patent

active

051060736

ABSTRACT:
A sheet feeding device comprising a plurality of pickup rollers for exerting a feeding force P (gf) on thin sheets which have ream weights K (kg) less than 55 kg and one or more friction rollers for offering resistance to the thin sheets fed by the pickup rollers. A distance L (mm), in a feeding direction, between the pickup rollers and the friction rollers is set in a range defined by the relationship: ##EQU1## so as to enables a feeding of the thin sheets with no buckling.

REFERENCES:
patent: 650410 (1900-05-01), Morin
patent: 2104630 (1938-01-01), Zahn
patent: 2140171 (1938-12-01), Rouan
patent: 2887316 (1959-05-01), Tobey
patent: 3655183 (1972-04-01), Wagner
patent: 3804400 (1974-03-01), Hunt
patent: 3831931 (1974-08-01), Tsukamoto
patent: 3961786 (1976-06-01), Yanker
patent: 3981497 (1976-09-01), Feinstein
patent: 4032135 (1977-06-01), Ruenzi
patent: 4061328 (1977-12-01), Fujimoto
patent: 4106763 (1978-08-01), Tani
patent: 4350328 (1982-09-01), Katakura
patent: 4368880 (1983-01-01), Shimizu
patent: 4458890 (1984-07-01), Kawazu
Canon NP 8500 Sorter ADF Service Manual, Jan. 1980, pp. 1-1 to 1-6 and 3-6.

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