Invention Grant
- Patent Title: Sheet feeding device, image recording apparatus and sheet feeding amount compensating method
- Patent Title (中): 送纸装置,图像记录装置和送纸量补偿方法
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Application No.: US12395201Application Date: 2009-02-27
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Publication No.: US08205881B2Publication Date: 2012-06-26
- Inventor: Kohei Terada
- Applicant: Kohei Terada
- Applicant Address: JP Nagoya-shi, Aichi-ken
- Assignee: Brother Kogyo Kabushiki Kaisha
- Current Assignee: Brother Kogyo Kabushiki Kaisha
- Current Assignee Address: JP Nagoya-shi, Aichi-ken
- Agency: Baker Botts L.L.P.
- Priority: JP2008-051408 20080229
- Main IPC: B65H7/02
- IPC: B65H7/02

Abstract:
A sheet feeding device intermittently feeds a sheet according to commanded feeding amounts included in successively generated feeding commands. The sheet feeding device includes upstream and downstream feeding rollers rotated by respective first and second amounts of rotation corresponding to the commanded feeding amount. The sheet feeding device includes an obtaining portion for obtaining an overrun amount of the sheet immediately after a trailing edge of the sheet member has left the upstream feeding roller, based on a difference obtained by subtracting a product of a first radius and the first amount of rotation of the upstream feeding roller, from a product of a second radius and the second amount of rotation of the downstream roller. The obtained overrun amount is subtracted from the next commanded feeding amount, when estimating that the trailing edge leaves the upstream feeding roller during feeding of the sheet according to the next feeding command.
Public/Granted literature
- US20090219371A1 SHEET FEEDING DEVICE, IMAGE RECORDING APPARATUS AND SHEET FEEDING AMOUNT COMPENSATING METHOD Public/Granted day:2009-09-03
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