EP0978807A4 - Method and device for checking coin for forgery - Google Patents

Method and device for checking coin for forgery

Info

Publication number
EP0978807A4
EP0978807A4 EP99905308A EP99905308A EP0978807A4 EP 0978807 A4 EP0978807 A4 EP 0978807A4 EP 99905308 A EP99905308 A EP 99905308A EP 99905308 A EP99905308 A EP 99905308A EP 0978807 A4 EP0978807 A4 EP 0978807A4
Authority
EP
European Patent Office
Prior art keywords
coin
exciting coil
forgery
passage
vicinity
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.)
Withdrawn
Application number
EP99905308A
Other languages
German (de)
French (fr)
Other versions
EP0978807A1 (en
Inventor
Yonezo Furuya
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.)
Nippon Conlux Co Ltd
Original Assignee
Nippon Conlux 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 Nippon Conlux Co Ltd filed Critical Nippon Conlux Co Ltd
Publication of EP0978807A1 publication Critical patent/EP0978807A1/en
Publication of EP0978807A4 publication Critical patent/EP0978807A4/en
Withdrawn legal-status Critical Current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
    • G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • G07D5/08—Testing the magnetic or electric properties
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • G07D5/005—Testing the surface pattern, e.g. relief

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Coins (AREA)

Abstract

A method and device for checking a coin for forgery by means of a difference in an uneven pattern on a coin surface, wherein an exciting coil is disposed in the vicinity of a passage wall on one side of a coin passage inclined at a preset angle so that the two magnetic poles of the exciting coil face the coin passage, and two receiving coils having approximately identical characteristics are disposed in the vicinity of the same passage wall for electromagnetic coupling with the exciting coil. The exciting coil is excited at a preset frequency to detect by the receiving coil an effect on a diamagnetic field by an eddy current produced on a coin surface. A different uneven pattern on the coin surface generates a different diamagnetic field strength to enable us to check the coin for forgery. The device, simple in construction and inexpensive to construct, can discriminate a coin of approximately the same material, shape and thickness according to a difference in its surface pattern.
EP99905308A 1998-02-26 1999-02-25 Method and device for checking coin for forgery Withdrawn EP0978807A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP06037798A JP3660496B2 (en) 1998-02-26 1998-02-26 Method and apparatus for inspecting authenticity of coin
JP6037798 1998-02-26
PCT/JP1999/000881 WO1999044176A1 (en) 1998-02-26 1999-02-25 Method and device for checking coin for forgery

Publications (2)

Publication Number Publication Date
EP0978807A1 EP0978807A1 (en) 2000-02-09
EP0978807A4 true EP0978807A4 (en) 2002-03-06

Family

ID=13140398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99905308A Withdrawn EP0978807A4 (en) 1998-02-26 1999-02-25 Method and device for checking coin for forgery

Country Status (7)

Country Link
EP (1) EP0978807A4 (en)
JP (1) JP3660496B2 (en)
KR (1) KR100562857B1 (en)
AU (1) AU729021B2 (en)
CA (1) CA2288297C (en)
MY (1) MY123288A (en)
WO (1) WO1999044176A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3773689B2 (en) * 1999-03-17 2006-05-10 株式会社日本コンラックス Coin inspection method and apparatus
US6640955B1 (en) 1999-10-06 2003-11-04 Kabushiki Kaisha Nippon Conlux Coin inspection method and device
US6340082B1 (en) * 1999-10-22 2002-01-22 Japan Tobacco Inc. Coin discriminating apparatus
EP1241636B1 (en) * 2001-03-15 2009-08-12 Glory Ltd. Coin processing apparatus
AU2003235382A1 (en) * 2002-04-26 2003-11-10 Azuma Systems Co., Ltd Coin shape detection method, coin identification sensor, and coin identification device
DE102007046390B3 (en) 2007-09-20 2008-11-27 National Rejectors, Inc. Gmbh Method for checking coins
JP7443733B2 (en) * 2019-11-28 2024-03-06 沖電気工業株式会社 Coin recognition device and coin handling device using the coin recognition device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4705154A (en) * 1985-05-17 1987-11-10 Matsushita Electric Industrial Co. Ltd. Coin selection apparatus
US5458225A (en) * 1991-09-28 1995-10-17 Anritsu Corporation Coin discriminating apparatus
EP0731429A2 (en) * 1995-03-07 1996-09-11 Cummins-Allison Corporation Coin discrimination sensor and coin handling system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3870137A (en) 1972-02-23 1975-03-11 Little Inc A Method and apparatus for coin selection utilizing inductive sensors
JPS6180491A (en) * 1984-09-28 1986-04-24 株式会社日本コンラックス Coin inspector
JPH0589319A (en) * 1991-09-26 1993-04-09 Tdk Corp Coin sensor
JP2964057B2 (en) * 1992-10-09 1999-10-18 アンリツ株式会社 Coin sensor of coin discriminator
JP3478602B2 (en) * 1994-07-28 2003-12-15 株式会社日本コンラックス Coin inspection method and device
JPH08212416A (en) * 1995-02-03 1996-08-20 Anritsu Corp Coin discriminating device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4705154A (en) * 1985-05-17 1987-11-10 Matsushita Electric Industrial Co. Ltd. Coin selection apparatus
US5458225A (en) * 1991-09-28 1995-10-17 Anritsu Corporation Coin discriminating apparatus
EP0731429A2 (en) * 1995-03-07 1996-09-11 Cummins-Allison Corporation Coin discrimination sensor and coin handling system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9944176A1 *

Also Published As

Publication number Publication date
JP3660496B2 (en) 2005-06-15
CA2288297A1 (en) 1999-09-02
AU729021B2 (en) 2001-01-25
JPH11250305A (en) 1999-09-17
KR20000076308A (en) 2000-12-26
EP0978807A1 (en) 2000-02-09
AU2549499A (en) 1999-09-15
MY123288A (en) 2006-05-31
KR100562857B1 (en) 2006-03-24
CA2288297C (en) 2004-04-27
WO1999044176A1 (en) 1999-09-02

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

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Owner name: KABUSHIKI KAISHA NIPPON CONLUX

STAA Information on the status of an ep patent application or granted ep patent

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Effective date: 20090901