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:
Nov. 22, 2016
Filed:
Jan. 09, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Takahiko Yamaoka, Kashiwa, JP;
Shinnosuke Iwadate, Toride, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A sheet feeding device includes a sheet storage unit, a driving unit, a first detection unit, a second detection unit, and a control unit. The sheet storage unit includes a tray on which a sheet bundle including a plurality of sheets is to be stacked. The driving unit lifts up the tray. The first detection unit detects, at a predetermined position, a top surface of the sheet bundle stacked on the tray and lifted up. The second detection unit detects whether a sheet is stacked on the tray. The control unit controls, while the first detection unit has not detected the top surface of the sheet bundle, the driving unit to lift up the tray at a first speed until the second detection unit detects the sheet, and to lift up the tray at a second speed lower than the first speed after the second detection unit detects the sheet.