Invention Grant
- Patent Title: Sheet feeding device and image forming apparatus
- Patent Title (中): 送纸装置和成像装置
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Application No.: US13311327Application Date: 2011-12-05
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Publication No.: US08382097B2Publication Date: 2013-02-26
- Inventor: Yoshinao Chiba
- Applicant: Yoshinao Chiba
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon USA, Inc., IP Division
- Priority: JP2010-273897 20101208
- Main IPC: B65H1/18
- IPC: B65H1/18

Abstract:
A sheet feeding device may include a tray, a sheet feeder, a pressurizing unit, a height detection unit, a weight detection unit, and a control unit. The tray may be raised and lowered. The sheet feeder sends out a sheet stacked on the tray. The pressurizing unit urges the tray to pressurize the sheet stacked on the tray against the sheet feeder. The control unit adjust pressure force of the pressurizing unit per change in height of sheets stacked on the tray on a basis of weight per unit height of the sheets, calculated on a basis of an initial total weight of the sheets stacked on the tray detected by the weight detection unit before a feeding operation is started and on a basis of the initial height of sheets stacked on the tray detected by the height detection unit before a sheet feeding operation is started.
Public/Granted literature
- US20120146282A1 SHEET FEEDING DEVICE AND IMAGE FORMING APPARATUS Public/Granted day:2012-06-14
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