Sheet feeder

Details Sheet feeder Sheet feeder

Filed on

2008-05-13

Date issued

2008-05-13

Examiner

Bollinger, David H (Department: 3653)

Patent Class

Sheet feeding or delivering

SubClass

Feeding

SubSubClass

Separators

Other Related Categories

C271S167000

Type

Reexamination Certificate

Status

active

Patent number

07370859

Description

ABSTRACT:
Sheets are separated one-by-one from their stack placed in a holder by a sheet feed roller and a separation member provided in an inclined separation plate. The separation member can be a flat metal plate, and possibly includes a base portion, arm portions extending from the base portion, separation protrusions provided on the arm portions and capable of contacting a sheet, and elastic legs extending from the base portion. The arm portions, the separation protrusions, and the elastic legs can be arranged along a sheet feeding direction. The inclined separation plate may be provided with window holes on a central portion with respect to a direction perpendicular to the sheet feeding direction. The window holes can allow each separation protrusion or two or more separation protrusions to protrude toward the front surface of the inclined separation plate. Bridge portions can be provided between adjacent window holes. The bridge portions may strengthen the bending stiffness of the inclined separation plate in the direction perpendicular to the sheet feeding direction, and thus the separation protrusions are allowed to protrude only by a specified amount as designed.

REFERENCES:
patent: 5895040 (1999-04-01), Oleksa et al.
patent: 6279897 (2001-08-01), Richards
patent: 7066461 (2006-06-01), Asada
patent: 2002/0070495 (2002-06-01), Takeuchi
patent: 2004/0084831 (2004-05-01), Asada
patent: 2005/0194734 (2005-09-01), Asada et al.
patent: 2006/0180992 (2006-08-01), Asada
patent: 2006/0180993 (2006-08-01), Lee
patent: 1 125 873 (2001-08-01), None
patent: 2002173240 (2002-06-01), None
Extended European Search Report in Application No. EP 05 25 8050 dated Mar. 20, 2006.

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