发明授权
US08419014B2 Image reading apparatus, multifeed determining method, and multifeed determining program
有权
图像读取装置，多页进纸确定方法和多页进纸确定程序
- 专利标题： Image reading apparatus, multifeed determining method, and multifeed determining program
- 专利标题（中）： 图像读取装置，多页进纸确定方法和多页进纸确定程序
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申请号： US13048575申请日： 2011-03-15
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公开(公告)号： US08419014B2公开(公告)日： 2013-04-16
- 发明人: Hiroshi Yamagishi , Shinji Suzuki
- 申请人： Hiroshi Yamagishi , Shinji Suzuki
- 申请人地址： JP Ishikawa
- 专利权人： PFU Limited
- 当前专利权人： PFU Limited
- 当前专利权人地址： JP Ishikawa
- 代理机构： McDermott Will & Emery LLP
- 优先权： JP2010-112445 20100514
- 主分类号： B65H7/12
- IPC分类号： B65H7/12
摘要：
An image reading apparatus includes a multifeed detecting mechanism including an ultrasonic sensor, and a control unit. The control unit includes (i) a detecting unit that detects an attached portion on a paper from an output of the ultrasonic sensor for the paper fed, and (ii) a determining unit that ignores, when it is detected as “Occurrence of multifeed” by the multifeed detecting mechanism and if an amount of variation in the output within the attached portion detected by the detecting unit is equal to or more than a first predetermined value, a result of detection as the occurrence of multifeed by the multifeed detecting mechanism, and determines the detection as “No multifeed”.