US 9,033,334 B2Granted

Sheet feeding apparatus and image forming apparatus

AssigneeCanon Kabushiki Kaisha

InventorTakashi Yano

Life of this patent

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Abstract

A sheet feeding apparatus comprising: a storage portion; a feeding portion; and a separation portion, wherein the separation portion includes: a separation member which rotates around a rotation center shaft to separate one by one the sheets; an urging portion which applies a force to the rotation center shaft toward the feeding portion; a torque imparting portion to impart a torque to the separation member in a direction opposite to a direction which the separation member rotates; a first and a second support member which supports one end and other end of the rotation center shaft while regulating rotation of the rotation center shaft; and a deviation restraining portion which restrains deviation of a reaction force of the torque applied to the separation member by the torque imparting portion and acting on the first support member and the second support member.

Claims9

Dependent claims

A sheet feeding apparatus comprising:

a stacking portion on which a sheet is stacked;
a feeding portion configured to feed the sheet stacked on the stacking portion;
a separation roller configured to separate the sheet fed by the feeding portion;
a shaft configured to support the separation roller;
a torque limiter configured to connect the shaft and the separation roller;
a supporting unit configured to support the shaft, wherein a rotation of the shaft with respect to the supporting unit is restricted, and the supporting unit includes a first supporting portion configured to support one end of the shaft, a second supporting portion configured to support an other end of the shaft, and a connecting portion configured to connect the first supporting portion and the second supporting portion;
a first abutting portion to which a first abutted portion provided on the first supporting portion abuts;
a second abutting portion to which a second abutted portion provided on the second supporting portion abuts;
and
a third abutting portion provided between the first abutting portion and the second abutting portion in the axial direction of the shaft, and to which a third abutted portion provided on the connecting portion abuts, the third abutting portion being positioned at an other side of the connecting portion from the first abutting portion and the second abutting portion.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/055,065Filed 16 Oct 2013
Priority: JP 2012-2682377 Dec 2012
Published: US 2014/0159299 A112 Jun 2014
Granted: 19 May 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

B65H 3/5215
Non-driven retainers, e.g. movable retainers being moved by the motion of the article: the retainers positioned under articles separated from the…
B65H 1/12
With means for advancing the articles to present the articles to the separating device: comprising spring
B65H 3/5261
The retainers positioned under articles separated from the top of the pile: retainers of the roller type, e.g. rollers
B65H 2402/54
Machine elements: springs, e.g. helical or leaf springs