The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 2012
Filed:
Mar. 26, 2010
Junki Ueyama, Nagoya, JP;
Makoto Hattori, Nagoya, JP;
Junki Ueyama, Nagoya, JP;
Makoto Hattori, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Aichi-Ken, JP;
Abstract
A sheet feeding device includes a holding unit configured to hold a stack of sheets; a pickup roller, which feeds a sheet placed on top of the stack held in the holding unit when the pickup roller comes in contact with the sheet; a holder arm having a distal end to which the pickup roller is attached, wherein the holder arm has a swing center set at a position closer to the pickup roller side than the holding unit, and wherein the distal end of the holder arm extends from the swing center to the holding unit side; and a resiliently-deformable unit, which generates a swing moment to swing the holder arm to increases contact surface pressure between the sheet held in the holding unit and the pickup roller, wherein the swing moment increases as a contact angle between an extension direction of the holder arm and the sheet increases.