WO2007149135A3 - Anti-theft security marker with soft magnetic bias component - Google Patents

Anti-theft security marker with soft magnetic bias component Download PDF

Info

Publication number
WO2007149135A3
WO2007149135A3 PCT/US2007/004417 US2007004417W WO2007149135A3 WO 2007149135 A3 WO2007149135 A3 WO 2007149135A3 US 2007004417 W US2007004417 W US 2007004417W WO 2007149135 A3 WO2007149135 A3 WO 2007149135A3
Authority
WO
WIPO (PCT)
Prior art keywords
soft magnetic
pieces
theft
magnetic material
magnetic bias
Prior art date
Application number
PCT/US2007/004417
Other languages
French (fr)
Other versions
WO2007149135A2 (en
Inventor
Lin Li
Original Assignee
Ningbo Signatronic Technologie
Lin Li
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
Priority claimed from CNB2006100520124A external-priority patent/CN100447911C/en
Application filed by Ningbo Signatronic Technologie, Lin Li filed Critical Ningbo Signatronic Technologie
Publication of WO2007149135A2 publication Critical patent/WO2007149135A2/en
Publication of WO2007149135A3 publication Critical patent/WO2007149135A3/en

Links

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
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • 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
    • 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
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/2442—Tag materials and material properties thereof, e.g. magnetic material details

Abstract

An acoustic-magneto (AM) anti-theft marker is formed with the bias piece made from a soft magnetic material, instead of a 'semi-hard' magnetic material that has been used in conventional anti-theft AM security markers. The method of manufacturing such soft magnetic bias pieces includes cold deforming a soft magnetic material with at least an eighty percent reduction rate, while keeping its DC coercivity below 12.5 Oe. The strip or wire of soft magnetic material is then cut to size as required for the bias piece. The anti-theft AM security marker has the soft magnetic bias piece placed inside or outside of the resonating cavity of the housing for the security tag with the resonator pieces inside the resonating cavity with a cover film placed over the housing. The soft magnetic bias piece or pieces effectively operate close to resonator piece or pieces with or without a non-magnetic separating film.
PCT/US2007/004417 2006-06-16 2007-02-20 Anti-theft security marker with soft magnetic bias component WO2007149135A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN200610052012.4 2006-06-16
CNB2006100520124A CN100447911C (en) 2006-06-16 2006-06-16 Soft magnetic material offset piece manufacturing method and anti-theft acoustic magnetic label using the same
US11/602,109 US7626502B2 (en) 2006-06-16 2006-11-20 Anti-theft security marker with soft magnetic bias component
US11/602,109 2006-11-20

Publications (2)

Publication Number Publication Date
WO2007149135A2 WO2007149135A2 (en) 2007-12-27
WO2007149135A3 true WO2007149135A3 (en) 2008-02-21

Family

ID=38833898

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/004417 WO2007149135A2 (en) 2006-06-16 2007-02-20 Anti-theft security marker with soft magnetic bias component

Country Status (1)

Country Link
WO (1) WO2007149135A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102592771B (en) * 2012-03-01 2014-07-30 常州市美思科特电子有限公司 Novel antitheft tag magnetic material, production process thereof and acoustic magnetic antitheft tag

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5780175A (en) * 1996-02-02 1998-07-14 Lucent Technologies Inc. Articles comprising magnetically soft thin films and methods for making such articles
US5885371A (en) * 1996-10-11 1999-03-23 Kawasaki Steel Corporation Method of producing grain-oriented magnetic steel sheet
US6359563B1 (en) * 1999-02-10 2002-03-19 Vacuumschmelze Gmbh ‘Magneto-acoustic marker for electronic article surveillance having reduced size and high signal amplitude’
US6426700B1 (en) * 2000-05-31 2002-07-30 Sensormatic Electronics Corporation Bias configuration for a magnetomechanical EAS marker
US6707649B2 (en) * 2001-03-22 2004-03-16 Alps Electric Co., Ltd. Magnetic sensing element permitting decrease in effective element size while maintaining large optical element size
US20040207528A1 (en) * 2003-02-27 2004-10-21 Fabian Carl E. Miniature magnetomechanical marker for electronic article surveillance system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5780175A (en) * 1996-02-02 1998-07-14 Lucent Technologies Inc. Articles comprising magnetically soft thin films and methods for making such articles
US5885371A (en) * 1996-10-11 1999-03-23 Kawasaki Steel Corporation Method of producing grain-oriented magnetic steel sheet
US6359563B1 (en) * 1999-02-10 2002-03-19 Vacuumschmelze Gmbh ‘Magneto-acoustic marker for electronic article surveillance having reduced size and high signal amplitude’
US6426700B1 (en) * 2000-05-31 2002-07-30 Sensormatic Electronics Corporation Bias configuration for a magnetomechanical EAS marker
US6707649B2 (en) * 2001-03-22 2004-03-16 Alps Electric Co., Ltd. Magnetic sensing element permitting decrease in effective element size while maintaining large optical element size
US20040207528A1 (en) * 2003-02-27 2004-10-21 Fabian Carl E. Miniature magnetomechanical marker for electronic article surveillance system

Also Published As

Publication number Publication date
WO2007149135A2 (en) 2007-12-27

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