US 2009/0243195 A1Published application

Sheet feeding device and recording apparatus

AssigneeCanon Kabushiki Kaisha

InventorsShinya Sonoda, Yasutsugu Saijo, Yoshinori Watanabe

Life of this patent

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Abstract

A sheet material feeding apparatus includes a sheet stacking portion for stacking recording sheets; a feeding roller for feeding the recording sheets from the sheet stacking portion; separating means for separating the recording sheet fed out by the feeding roller; a holder for holding the separating means, the holder being rotatably supported on a main assembly of the apparatus; first urging means for urging the holder toward the feeding roller; a preliminary regulating member, rotatably supported on the holder, for regulating a gap relative to the feeding roller; second urging means for urging the preliminary regulating member toward the feeding roller; a first regulating member, supported by the holder, for regulating rotation of the preliminary regulating member relative to the holder; and a second regulating member, provided in the main assembly of apparatus, for regulating rotation of the preliminary regulating member relative to the main assembly of the apparatus.

Claims8

Dependent claims

A sheet feeding apparatus comprising:

holding means for holding a sheet material;
a stacker for stacking sheet materials;
a feeding roller for feeding the sheet material held by said holding means;
separating means, contactable to the sheet material fed by said feeding roller, for separating the sheets one by one;
and
a first contact portion and a second contact portion which are contactable to the sheet at respective lateral sides of said feeding roller at upstream positions with respect to a feeding direction of said separating means, wherein said first and second contact portions are contactable to the sheet at a side of the sheet opposite to a side thereof to which said feeding roller contacts, and wherein distances between a rotational axis of said feeding roller and said first and second contact portions are not longer than the distance between the rotational axis of said feeding roller and an outer peripheral surface of said feeding roller which is contactable to the sheet, wherein said first and second contact portions are contacted to the sheet at positions downstream of said stacker with respect to the feeding direction.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/480,282Filed 8 Jun 2009
Priority: JP 040089/200218 Feb 2002
Published: 1 Oct 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B65H 3/5223
The retainers positioned under articles separated from the top of the pile: retainers of the pad-type, e.g. friction pads
B65H 3/0661
Rollers or like rotary separators: for separating inclined-stacked articles with separator rollers above the stack
B65H 3/56
Supplementary devices or measures to assist separation or prevent double feed: elements, e.g. scrapers, fingers, needles, brushes, acting on…
B65H 2403/732
Couplings: torque limiters

Family

Application10/366,508Division · filed 14 Feb 2003
Application11/349,100Division · filed 8 Feb 2006
Application12/047,822Division · filed 13 Mar 2008
Application12/480,282Division
US 2003/0160381 A1Published application
US 2006/0157913 A1Published application
US 2008/0224382 A1Published application
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US 2009/0243195 A1This patent

From the US filing history. Foreign family members aren’t listed.