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JPS57119277A - Detecting device for metal piece placed in paper - Google Patents

Detecting device for metal piece placed in paper

Info

Publication number
JPS57119277A
JPS57119277A JP56003893A JP389381A JPS57119277A JP S57119277 A JPS57119277 A JP S57119277A JP 56003893 A JP56003893 A JP 56003893A JP 389381 A JP389381 A JP 389381A JP S57119277 A JPS57119277 A JP S57119277A
Authority
JP
Japan
Prior art keywords
metal piece
paper
magnetic
detecting
magnet
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
JP56003893A
Other languages
Japanese (ja)
Inventor
Takeshi Ishida
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56003893A priority Critical patent/JPS57119277A/en
Priority to US06/336,684 priority patent/US4518919A/en
Priority to DE8282300197T priority patent/DE3275957D1/en
Priority to EP82300197A priority patent/EP0057520B1/en
Priority to AT82300197T priority patent/ATE26353T1/en
Publication of JPS57119277A publication Critical patent/JPS57119277A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE:To enable detecting of the presence of even a magnetic metal piece, by a detecting a metal piece, inserted into a paper, through the working of a permanent magnet and a magnetic resistance element. CONSTITUTION:A note P, being conveyed, is pressed against a detecting head 4, consisting of a permanent magnet 5 and a magnetic resistance element 6, responsing to a change in magnetic field of the magnetic path of the magnet 5, through a pressing mechanism 19. If a metal piece 2 is inserted in the note P, a magnetic field, formed by the magnet 5, changes, the presence of the metal piece 2 is detected not through the use of a detecting system being high sensitive to aluminium by an eddy current. Thus, even in case the metal piece, inserted into a paper such as notes, is of a magnetic substance, the presence of the metal piece can be detected reliably.
JP56003893A 1981-01-16 1981-01-16 Detecting device for metal piece placed in paper Pending JPS57119277A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP56003893A JPS57119277A (en) 1981-01-16 1981-01-16 Detecting device for metal piece placed in paper
US06/336,684 US4518919A (en) 1981-01-16 1982-01-04 Detecting device for detecting a magnetic strip embedded in a sheet
DE8282300197T DE3275957D1 (en) 1981-01-16 1982-01-14 A device for detecting a magnetic strip embedded in paper
EP82300197A EP0057520B1 (en) 1981-01-16 1982-01-14 A device for detecting a magnetic strip embedded in paper
AT82300197T ATE26353T1 (en) 1981-01-16 1982-01-14 DEVICE FOR DETECTING A MAGNETIC STRIP INSERTED IN PAPER.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56003893A JPS57119277A (en) 1981-01-16 1981-01-16 Detecting device for metal piece placed in paper

Publications (1)

Publication Number Publication Date
JPS57119277A true JPS57119277A (en) 1982-07-24

Family

ID=11569858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56003893A Pending JPS57119277A (en) 1981-01-16 1981-01-16 Detecting device for metal piece placed in paper

Country Status (1)

Country Link
JP (1) JPS57119277A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0248889U (en) * 1988-09-30 1990-04-04
JPH0663545U (en) * 1994-02-07 1994-09-09 富士通株式会社 Media detection mechanism
WO2009150386A1 (en) * 2008-06-13 2009-12-17 Parkeon System and method for checking the validity of a valuable article, and time clock including such system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0248889U (en) * 1988-09-30 1990-04-04
JPH0663545U (en) * 1994-02-07 1994-09-09 富士通株式会社 Media detection mechanism
WO2009150386A1 (en) * 2008-06-13 2009-12-17 Parkeon System and method for checking the validity of a valuable article, and time clock including such system
FR2932593A1 (en) * 2008-06-13 2009-12-18 Parkeon SYSTEM AND METHOD FOR VERIFYING THE VALIDITY OF A VALUE ARTICLE, AND HORODATOR COMPRISING SUCH A SYSTEM

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