Sheet feeding or delivering – Feeding – Separators
Reexamination Certificate
2007-09-18
2007-09-18
Bollinger, David H (Department: 3653)
Sheet feeding or delivering
Feeding
Separators
C271S167000
Reexamination Certificate
active
11264051
ABSTRACT:
A paper feed portion for an image forming apparatus has a simple structure capable of generating a carrying force and preventing double feeding effectively. A paper feed roller1and a carrying auxiliary portion2are arranged symmetrically with respect to the paper feed path, that is, above the paper feed path on the upstream side and below the paper feed path on the downstream side, respectively. In the carrying auxiliary portion2, a carrying force generating rib22is at the center of the width direction and positioned facing the contact member10aof the paper feed roller1. Double feed preventing ribs23aand23bare arranged symmetrically widthwise with respect to the carrying force generating rib22. The upper surfaces231aand231bof the upstream ends of the double feed preventing ribs23aand23bare lower than the upper surface221of the upstream end of the carrying force generating rib22, and the upper ends233of the wall surfaces of the upstream ends of the double feed preventing ribs23aand23bare positioned upstream of the upper end223of the wall surface of the paper carrying upstream end of the carrying force generating rib22.
REFERENCES:
patent: 4635922 (1987-01-01), Roetter et al.
patent: 2006/0049573 (2006-03-01), Takasaka et al.
patent: 2006/0071401 (2006-04-01), Chikumoto
patent: 07-126029 (1995-05-01), None
Bacon & Thomas PLLC
Bollinger David H
Funai Electric Co. Ltd.
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