发明申请
- 专利标题： Double feed detection method and double feed detection apparatus of sheet materials
- 专利标题（中）： 双重进纸检测方法和双面进纸检测装置的片材
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申请号： US10921285申请日： 2004-08-19
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公开(公告)号： US20050040587A1公开(公告)日： 2005-02-24
- 发明人: Takehiko Kawasaki
- 申请人： Takehiko Kawasaki
- 申请人地址： JP TOKYO
- 专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人地址： JP TOKYO
- 优先权： JP2002-162996 20020604; JP2002-162997 20020604
- 主分类号： B65H7/12
- IPC分类号： B65H7/12 ; B65H3/08
摘要：
A double feed detection method for detecting whether sheet materials are double fed or not, includes the steps of applying an external force to a sheet material by bringing external force application means into contact with the sheet material, detecting the external force applied to the sheet material by detection means, and determining whether the sheet materials are double fed or not using a signal obtained from the detection means.
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