Sheet feeding or delivering – Feeding – Separators
Patent
1989-01-25
1989-08-29
Rolla, Joseph J.
Sheet feeding or delivering
Feeding
Separators
271121, 271122, 271125, B65H 306
Patent
active
048610135
ABSTRACT:
A mechanism for preventing the feeding of more than one sheet of paper at one time comprising a document feeder having a pair of parallel shafts, one of which is a paper-supply roller shaft supporting a plurality of paper-supply rollers, and the other of which is a separation roller shaft supporting a plurality of separation rollers, wherein the distance between the shafts is slightly less than the sum of the radii of these paper-supply rollers and separation rollers, and said paper-supply rollers and said separation rollers are arranged in a zigzag manner, the outer surface of each of said paper-supply rollers being composed of a large frictional section producing much friction between the paper-supply roller and the paper and a small frictional section producing little friction between the paper-supply roller and the paper.
REFERENCES:
patent: 3888479 (1975-06-01), Eder et al.
patent: 4030413 (1977-06-01), Young
patent: 4443006 (1984-04-01), Hasegawa
patent: 4560154 (1985-12-01), Nogi et al.
patent: 4589650 (1986-05-01), Miyoshi
patent: 4728095 (1988-03-01), Irvine et al.
Morimoto Kiyoshi
Shibata Kiyotaka
Bollinger David H.
Mita Industrial Co. Ltd.
Rolla Joseph J.
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