JPS5727848A - Sheet multifeed detector - Google Patents

Sheet multifeed detector

Info

Publication number
JPS5727848A
JPS5727848A JP10159680A JP10159680A JPS5727848A JP S5727848 A JPS5727848 A JP S5727848A JP 10159680 A JP10159680 A JP 10159680A JP 10159680 A JP10159680 A JP 10159680A JP S5727848 A JPS5727848 A JP S5727848A
Authority
JP
Japan
Prior art keywords
output
multifeeding
magnet
detecting
detecting roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10159680A
Other languages
Japanese (ja)
Inventor
Kinichi Kidera
Hiroyuki Nishimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP10159680A priority Critical patent/JPS5727848A/en
Publication of JPS5727848A publication Critical patent/JPS5727848A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: In a detector for detecting multifeeding of sheet by displacement of a detecting roller, to detect the multifeeding with high accuracy by providing a magnet- electric converting element for generating an output corresponding to the displacement of the detecting roller and eliminating high frequency component from the output.
CONSTITUTION: When the notes laid one over the other are fed between a detecting roller 1 and a driving roller 2, the detecting roller 1 is lifted upward in the large, and a lever 3 is pivotally moved on a support shaft 4 on a large scale. So a magnet 12 fixed on the lever 3 displaces in the large, so that a magnetic flux piercing a magnet-electric converting element 13 mounted on a fixed member 11 is changed in the large to increase an output of the element 13. The output of a voltage comparator 22 connected to the element 13 is directly input, and on the other hand, the output of a sample hold circuit 23 where the output passing a delay circuit 29 is input is changed. After according to the output of the circuit 23, high frequency component based on creases is eliminated by a low-pass filter 24, a multifeeding decision signal is output from the comparator 25.
COPYRIGHT: (C)1982,JPO&Japio
JP10159680A 1980-07-23 1980-07-23 Sheet multifeed detector Pending JPS5727848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10159680A JPS5727848A (en) 1980-07-23 1980-07-23 Sheet multifeed detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10159680A JPS5727848A (en) 1980-07-23 1980-07-23 Sheet multifeed detector

Publications (1)

Publication Number Publication Date
JPS5727848A true JPS5727848A (en) 1982-02-15

Family

ID=14304757

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10159680A Pending JPS5727848A (en) 1980-07-23 1980-07-23 Sheet multifeed detector

Country Status (1)

Country Link
JP (1) JPS5727848A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07179247A (en) * 1993-12-24 1995-07-18 Kofu Nippon Denki Kk Paper sheet thickness detecting mechanism
JP2020086208A (en) * 2018-11-28 2020-06-04 株式会社沖データ Medium thickness detection device, medium conveyance device, and image forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07179247A (en) * 1993-12-24 1995-07-18 Kofu Nippon Denki Kk Paper sheet thickness detecting mechanism
JP2020086208A (en) * 2018-11-28 2020-06-04 株式会社沖データ Medium thickness detection device, medium conveyance device, and image forming apparatus

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