Invention Grant
- Patent Title: Sheet feeding apparatus and image forming apparatus with lifter mechanism
- Patent Title (中): 送纸装置和具有升降机构的成像装置
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Application No.: US12202490Application Date: 2008-09-02
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Publication No.: US07971868B2Publication Date: 2011-07-05
- Inventor: Akira Matsushima , Minoru Kawanishi , Yasuhiro Uchida , Eiji Wakiyama
- Applicant: Akira Matsushima , Minoru Kawanishi , Yasuhiro Uchida , Eiji Wakiyama
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2007-232260 20070907
- Main IPC: B65H3/06
- IPC: B65H3/06

Abstract:
A sheet feeding apparatus includes a middle plate, a lifter mechanism, and a sheet-feed roller. The sheet-feed roller can move to a first position retracted from the sheet, a second position lower than the first position for feeding the sheet, and a third position lower than the second position. The sheet feeding apparatus has a position control mode in which when a sheet is fed, the sheet-feed roller is moved from the first position to the third position and stopped there, the middle plate is moved toward the sheet-feed roller by the lifter mechanism, the sheet stacked on the middle plate is brought into abutment against the sheet-feed roller, the middle plate is moved until a position detection sensor outputs the detection signal that the sheet-feed roller is in the second position, and a height of the sheet is controlled.
Public/Granted literature
- US20090066009A1 SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS HAVING THE SAME Public/Granted day:2009-03-12
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