JP2018203484A5 - - Google Patents

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JP2018203484A5
JP2018203484A5 JP2017112386A JP2017112386A JP2018203484A5 JP 2018203484 A5 JP2018203484 A5 JP 2018203484A5 JP 2017112386 A JP2017112386 A JP 2017112386A JP 2017112386 A JP2017112386 A JP 2017112386A JP 2018203484 A5 JP2018203484 A5 JP 2018203484A5
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Japan
Prior art keywords
conveyance
sound wave
unit
sheet
reception signal
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JP2017112386A
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Japanese (ja)
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JP2018203484A (en
JP6952504B2 (en
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Priority claimed from JP2017112386A external-priority patent/JP6952504B2/en
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Claims (6)

シートの搬送路に設けられ、超音波を発信する音波発信部と、
前記搬送路を挟んで前記音波発信部に対向して設けられ、受信した音波に応じた信号を出力する音波受信部と、
前記音波受信部から出力された信号から超音波の帯域の周波数の信号を増幅して超音波受信信号を生成する超音波受信信号生成部と、
前記超音波受信信号に基づいて前記搬送路において複数のシートが重なって搬送されているかどうかを判定する重送判定部と、
シートの搬送および停止を制御する搬送制御部と、
シートが前記音波発信部と前記音波受信部の間を通過している状態において、シートの搬送の停止に応じて前記音波発信部を制御して超音波の発信を停止する音波発信制御部と、
を備えることを特徴とするシート搬送装置。 A sound wave transmitting unit that is provided in the sheet conveyance path and transmits ultrasonic waves,
A sound wave receiving unit that is provided so as to face the sound wave transmitting unit across the transport path and outputs a signal according to the received sound wave,
An ultrasonic reception signal generation unit that amplifies a signal having a frequency in an ultrasonic band from the signal output from the sound reception unit to generate an ultrasonic reception signal,
A double-feed determination unit that determines whether or not a plurality of sheets are conveyed in an overlapping manner in the conveyance path based on the ultrasonic reception signal,
A conveyance control unit that controls conveyance and stop of sheets,
In a state where the sheet is passing between the sound wave transmitting unit and the sound wave receiving unit, a sound wave transmitting control unit that controls the sound wave transmitting unit according to the stop of the conveyance of the sheet to stop the transmission of ultrasonic waves,
A sheet conveying device comprising: 前記音波発信制御部は、前記搬送制御部からの搬送を停止させた情報に基づいて超音波の発信を停止することを特徴とする請求項１に記載のシート搬送装置。 The sheet conveyance device according to claim 1 , wherein the sound wave transmission control unit stops transmission of ultrasonic waves based on information that the conveyance control unit has stopped conveyance. 前記音波受信部から出力された信号から可聴域の周波数の信号を増幅して可聴音受信信号を生成する可聴音受信信号生成部と、
前記可聴音受信信号からシートを搬送中であるか、あるいは停止中であるか、を判定する搬送停止判定部と、を備え、
前記音波発信制御部は、前記搬送停止判定部の判定に基づいて超音波の発信を停止することを特徴とする請求項１に記載のシート搬送装置。 An audible sound reception signal generation unit that generates an audible sound reception signal by amplifying a signal of a frequency in the audible range from the signal output from the sound wave reception unit,
A conveyance stop determination unit that determines whether the sheet is being conveyed or is stopped from the audible sound reception signal,
The sheet conveying apparatus according to claim 1 , wherein the sound wave transmission control unit stops transmission of ultrasonic waves based on the determination of the transport stop determination unit. 前記可聴域受信信号に基づいてシートの搬送音から搬送の異常を判定する、搬送異常判定部を備えることを特徴とする請求項３に記載のシート搬送装置。 The sheet conveyance device according to claim 3 , further comprising a conveyance abnormality determination unit that determines a conveyance abnormality from a sheet conveyance sound based on the audible range reception signal. 前記可聴域受信信号に基づいて装置操作者の音声による制御命令を判定する、音声判定部を備えることを特徴とする請求項３に記載のシート搬送装置。 The sheet conveyance device according to claim 3 , further comprising a voice determination unit that determines a control command by a voice of a device operator based on the audible range reception signal. 請求項１乃至５のいずれか１項に記載のシート搬送装置を備えたことを特徴とする画像読取装置。 Image reading apparatus characterized by having a sheet conveying apparatus according to any one of claims 1 to 5.
JP2017112386A 2017-06-07 2017-06-07 Image reader Active JP6952504B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017112386A JP6952504B2 (en) 2017-06-07 2017-06-07 Image reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017112386A JP6952504B2 (en) 2017-06-07 2017-06-07 Image reader

Publications (3)

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JP2018203484A JP2018203484A (en) 2018-12-27
JP2018203484A5 true JP2018203484A5 (en) 2020-07-30
JP6952504B2 JP6952504B2 (en) 2021-10-20

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JP2017112386A Active JP6952504B2 (en) 2017-06-07 2017-06-07 Image reader

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7277199B2 (en) 2019-03-26 2023-05-18 キヤノン株式会社 IMAGE FORMING APPARATUS, IMAGE FORMING METHOD AND IMAGE FORMING SYSTEM

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009161291A (en) * 2007-12-28 2009-07-23 Murata Mach Ltd Image reader
JP5404870B1 (en) * 2012-08-24 2014-02-05 株式会社Ｐｆｕ Paper reading device, jam determination method, and computer program
JP5409859B1 (en) * 2012-09-05 2014-02-05 株式会社Ｐｆｕ Document conveying apparatus, recovery method, and computer program

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