EP0431745A2 - Sensibilisierer für mit elektromagnetischen Artikel-Überwachungssystemen gebrauchte ferromagnetische Etikette - Google Patents

Sensibilisierer für mit elektromagnetischen Artikel-Überwachungssystemen gebrauchte ferromagnetische Etikette Download PDF

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Publication number
EP0431745A2
EP0431745A2 EP90311821A EP90311821A EP0431745A2 EP 0431745 A2 EP0431745 A2 EP 0431745A2 EP 90311821 A EP90311821 A EP 90311821A EP 90311821 A EP90311821 A EP 90311821A EP 0431745 A2 EP0431745 A2 EP 0431745A2
Authority
EP
European Patent Office
Prior art keywords
marker
gap
assembly
magnetic
current source
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Withdrawn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
EP90311821A
Other languages
English (en)
French (fr)
Other versions
EP0431745A3 (en
Inventor
Samuel C/O Minnesota Mining And Montean
Heinrich C/O Minnesota Mining And Schug
Juergen C/O Minnesota Mining And Sanetra
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing 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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of EP0431745A2 publication Critical patent/EP0431745A2/de
Publication of EP0431745A3 publication Critical patent/EP0431745A3/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
    • G08B13/2408—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using ferromagnetic tags
    • G08B13/2411—Tag deactivation

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
EP19900311821 1989-12-08 1990-10-29 Sensitizer for ferromagnetic markers used with electromagnetic article surveillance systems Withdrawn EP0431745A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44768489A 1989-12-08 1989-12-08
US447684 1989-12-08

Publications (2)

Publication Number Publication Date
EP0431745A2 true EP0431745A2 (de) 1991-06-12
EP0431745A3 EP0431745A3 (en) 1991-11-21

Family

ID=23777326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900311821 Withdrawn EP0431745A3 (en) 1989-12-08 1990-10-29 Sensitizer for ferromagnetic markers used with electromagnetic article surveillance systems

Country Status (3)

Country Link
EP (1) EP0431745A3 (de)
JP (1) JPH03189794A (de)
CA (1) CA2029245A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2263848A (en) * 1992-01-13 1993-08-04 Ramesh Chandra Patel Security tag activating/deactivating apparatus
FR2720538A1 (fr) * 1994-05-25 1995-12-01 Jacques Lewiner Dispositif pour désactiver des éléments antivols magnétiques.
EP0696785A1 (de) * 1994-08-09 1996-02-14 Sensormatic Electronics Corporation Gerät zur Deaktivierung von Warenüberwachungsetiketten
EP0715284A3 (de) * 1994-11-28 1996-06-12 Sensormatic Electronics Corporation Deaktivator für Diebstahl abwehrende Etiketten
WO1997025695A1 (en) * 1996-01-08 1997-07-17 Minnesota Mining And Manufacturing Company Apparatus for changing the status of magnetic markers in an electronic article surveillance system
EP0951000A2 (de) * 1998-04-17 1999-10-20 Meto International GmbH Vorrichtung zum Deaktivieren eines Sicherungselementes für die elektronische Artikelsicherung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665449A (en) * 1969-07-11 1972-05-23 Minnesota Mining & Mfg Method and apparatus for detecting at a distance the status and identity of objects
DE3014667A1 (de) * 1980-04-16 1981-10-29 Werner A. 4300 Essen Reiter Verfahren zum deaktivieren eines sicherungsstreifen s sowie deaktivator und sicherungsstreifen
EP0129335A1 (de) * 1983-05-20 1984-12-27 Minnesota Mining And Manufacturing Company Desensibilisierung eines ferromagnetischen Markierungselementes in einem elektromagnetischen Artikelüberwachungssystem
EP0202033A1 (de) * 1985-05-13 1986-11-20 Magnetic Peripherals Inc. Entmagnetisierungsgerät

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665449A (en) * 1969-07-11 1972-05-23 Minnesota Mining & Mfg Method and apparatus for detecting at a distance the status and identity of objects
DE3014667A1 (de) * 1980-04-16 1981-10-29 Werner A. 4300 Essen Reiter Verfahren zum deaktivieren eines sicherungsstreifen s sowie deaktivator und sicherungsstreifen
EP0129335A1 (de) * 1983-05-20 1984-12-27 Minnesota Mining And Manufacturing Company Desensibilisierung eines ferromagnetischen Markierungselementes in einem elektromagnetischen Artikelüberwachungssystem
EP0202033A1 (de) * 1985-05-13 1986-11-20 Magnetic Peripherals Inc. Entmagnetisierungsgerät

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2263848A (en) * 1992-01-13 1993-08-04 Ramesh Chandra Patel Security tag activating/deactivating apparatus
GB2263848B (en) * 1992-01-13 1995-05-31 Ramesh Chandra Patel Security apparatus
FR2720538A1 (fr) * 1994-05-25 1995-12-01 Jacques Lewiner Dispositif pour désactiver des éléments antivols magnétiques.
EP0696785A1 (de) * 1994-08-09 1996-02-14 Sensormatic Electronics Corporation Gerät zur Deaktivierung von Warenüberwachungsetiketten
EP0715284A3 (de) * 1994-11-28 1996-06-12 Sensormatic Electronics Corporation Deaktivator für Diebstahl abwehrende Etiketten
WO1997025695A1 (en) * 1996-01-08 1997-07-17 Minnesota Mining And Manufacturing Company Apparatus for changing the status of magnetic markers in an electronic article surveillance system
AU704121B2 (en) * 1996-01-08 1999-04-15 Minnesota Mining And Manufacturing Company Apparatus for changing the status of magnetic markers in an electronic article surveillance system
EP0951000A2 (de) * 1998-04-17 1999-10-20 Meto International GmbH Vorrichtung zum Deaktivieren eines Sicherungselementes für die elektronische Artikelsicherung
EP0951000A3 (de) * 1998-04-17 2000-06-21 Meto International GmbH Vorrichtung zum Deaktivieren eines Sicherungselementes für die elektronische Artikelsicherung

Also Published As

Publication number Publication date
JPH03189794A (ja) 1991-08-19
EP0431745A3 (en) 1991-11-21
CA2029245A1 (en) 1991-06-09

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