Paper feeder

Details Paper feeder Paper feeder

1996-12-26

1998-03-17

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

By means to convey sheet

271242, 271272, 271188, B65H 702

Patent

active

057277842

ABSTRACT:
A paper feeder capable of preventing a sheet of paper from breaking when a paper jam is developed within an image forming apparatus over the boundary between a paper conveying unit and the image forming apparatus and simply removing the jammed paper outside from the paper feeder. An entrance roller pair for feeding the paper is provided in the neighborhood of an entrance of a paper conveying path. A lower fixed guide member and a rotatable guide member opposed to each other so as to interpose the paper conveying path therebetween, are provided on the downstream side as seen in a paper feeding direction. Further, a jump portion which projects in convex form at a position opposed to the rotatable guide member and a paper sensor for detecting a rear end of the paper in the neighborhood of the entrance roller pair are provided. The rotatable guide member is rotatably supported by a support shaft provided on the downstream side as seen in the paper feeding direction and is urged toward the fixed guide member by the mass of a weight or the like. When the paper jam is developed, a paper feeding operation is continued until the rear end of the paper enters into the paper conveying unit and the paper is folded between the rotatable guide member and the fixed guide member.

REFERENCES:
patent: 4878657 (1989-11-01), Ura et al.
patent: 5022642 (1991-06-01), Hasegawa et al.
patent: 5362041 (1994-11-01), Ryuzaki et al.
patent: 5383655 (1995-01-01), Hayakawa et al.

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