Invention Grant
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
- Patent Title: Image reading apparatus, multifeed determining method, and multifeed determining program
- Patent Title (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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Application No.: US13048575Application Date: 2011-03-15
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Publication No.: US08419014B2Publication Date: 2013-04-16
- Inventor: Hiroshi Yamagishi , Shinji Suzuki
- Applicant: Hiroshi Yamagishi , Shinji Suzuki
- Applicant Address: JP Ishikawa
- Assignee: PFU Limited
- Current Assignee: PFU Limited
- Current Assignee Address: JP Ishikawa
- Agency: McDermott Will & Emery LLP
- Priority: JP2010-112445 20100514
- Main IPC: B65H7/12
- IPC: B65H7/12
Abstract:
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”.
Public/Granted literature
- US20110278790A1 IMAGE READING APPARATUS, MULTIFEED DETERMINING METHOD, AND MULTIFEED DETERMINING PROGRAM Public/Granted day:2011-11-17
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