EP0961301A4 - Marqueur magnetique - Google Patents

Marqueur magnetique

Info

Publication number
EP0961301A4
EP0961301A4 EP98953009A EP98953009A EP0961301A4 EP 0961301 A4 EP0961301 A4 EP 0961301A4 EP 98953009 A EP98953009 A EP 98953009A EP 98953009 A EP98953009 A EP 98953009A EP 0961301 A4 EP0961301 A4 EP 0961301A4
Authority
EP
European Patent Office
Prior art keywords
magnetic
generally
magnetic marker
magnetic material
soft magnetic
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.)
Granted
Application number
EP98953009A
Other languages
German (de)
English (en)
Other versions
EP0961301A1 (fr
EP0961301B1 (fr
Inventor
Shinji Furukawa
Shuji Ueno
Kenji Amiya
Toshiyuki Hirano
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.)
Unitika Ltd
Original Assignee
Unitika 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 Unitika Ltd filed Critical Unitika Ltd
Publication of EP0961301A1 publication Critical patent/EP0961301A1/fr
Publication of EP0961301A4 publication Critical patent/EP0961301A4/fr
Application granted granted Critical
Publication of EP0961301B1 publication Critical patent/EP0961301B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G08B13/2405—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
    • G08B13/2434—Tag housing and attachment details
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
    • H01F1/0304—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions adapted for large Barkhausen jumps or domain wall rotations, e.g. WIEGAND or MATTEUCCI effect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15391—Elongated structures, e.g. wires

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Burglar Alarm Systems (AREA)
  • Thin Magnetic Films (AREA)

Abstract

Ce petit marqueur magnétique, très sensible, est utilisable à la fois dans les systèmes dénommés généralement, système de Barkhausen et système à grande perméabilité. La longueur de ce marqueur magnétique comprenant une matériau magnétique mou n'excède pas 70 mm. Quand un champ magnétique alternatif d'une intensité inférieure à 0,20 e est appliqué à ce matériau magnétique mou, celui-ci provoque une inversion raide du champ magnétique avec un changement de flux magnétique supérieur à 8,0 x 10-9 Wb. La variation de l'intensité du champ magnétique, lorsque le matériau magnétique mou provoque une inversion de magnétisation, est, de préférence, inférieure ou égale à 0,10 e.
EP98953009A 1997-11-17 1998-11-11 Marqueur magnetique Expired - Lifetime EP0961301B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP31498397 1997-11-17
JP31498397 1997-11-17
PCT/JP1998/005069 WO1999026257A1 (fr) 1997-11-17 1998-11-11 Marqueur magnetique

Publications (3)

Publication Number Publication Date
EP0961301A1 EP0961301A1 (fr) 1999-12-01
EP0961301A4 true EP0961301A4 (fr) 2001-07-18
EP0961301B1 EP0961301B1 (fr) 2007-04-11

Family

ID=18060017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98953009A Expired - Lifetime EP0961301B1 (fr) 1997-11-17 1998-11-11 Marqueur magnetique

Country Status (4)

Country Link
EP (1) EP0961301B1 (fr)
DE (1) DE69837528T2 (fr)
ES (1) ES2284215T3 (fr)
WO (1) WO1999026257A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2847065B1 (fr) * 2002-11-13 2005-04-15 C P C Packaging Etiquette pour la protection d'un article contre le vol
FR2847064B1 (fr) * 2002-11-13 2005-02-11 C P C Packaging Etiquette pour la protection d'un article contre le vol
AT511332B1 (de) * 2011-08-11 2012-11-15 Suess Dieter Dr Methode und vorrichtung zur diskriminierenden detektion von behältern für die zubereitung von nahrungsmitteln in extraktionsmaschinen mittels magnetisierbarer materialien
JP2014171044A (ja) * 2013-03-01 2014-09-18 Yokohama National Univ 電気パルス発生装置、及び電気パルス発生装方法
EP3451309A4 (fr) 2016-04-28 2019-07-03 Aichi Steel Corporation Marqueur magnétique et système d'aide à la conduite
GB2585034A (en) * 2019-06-25 2020-12-30 Endomagnetics Ltd Hyperthermia implants and a method and system for heating the implant
US11166782B1 (en) 2020-07-19 2021-11-09 Sirius Medical Systems B.V. Implantable marker and a method of implanting markers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660025A (en) * 1984-11-26 1987-04-21 Sensormatic Electronics Corporation Article surveillance magnetic marker having an hysteresis loop with large Barkhausen discontinuities
EP0226812A2 (fr) * 1985-12-21 1987-07-01 Vacuumschmelze GmbH Etiquette désactivalbe de sécurité pour système de sécurité anti-vol
GB2264715A (en) * 1989-06-29 1993-09-08 Pitney Bowes Inc Ferromagnetic alloy with high nickel content and high permeability

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5304983A (en) * 1991-12-04 1994-04-19 Knogo Corporation Multiple pulse responder and detection system and method of making and using same
JPH09134817A (ja) * 1995-11-08 1997-05-20 Unitika Ltd 磁気マーカ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660025A (en) * 1984-11-26 1987-04-21 Sensormatic Electronics Corporation Article surveillance magnetic marker having an hysteresis loop with large Barkhausen discontinuities
EP0226812A2 (fr) * 1985-12-21 1987-07-01 Vacuumschmelze GmbH Etiquette désactivalbe de sécurité pour système de sécurité anti-vol
GB2264715A (en) * 1989-06-29 1993-09-08 Pitney Bowes Inc Ferromagnetic alloy with high nickel content and high permeability

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
KAWAMURA H ET AL: "REINFORCED LARGE BARKHAUSEN AND MATTEUCCI EFFECTS AND MAGNETOELASTIC WAVES IN COLD-DRAWN AND THEN TORSION ANNEALED AMORPHOUS WIRES", IEEE TRANSLATION JOURNAL ON MAGNETICS IN JAPAN,US,IEEE INC, NEW YORK, vol. 4, no. 6, 1 June 1989 (1989-06-01), pages 368 - 377, XP000165636, ISSN: 0882-4959 *
See also references of WO9926257A1 *
YANO N ET AL: "LARGE BARKHAUSEN DISCONTINUITY OF CO-FE-SI-B AMORPHOUS FILMS SPUTTERED ON POLYMER SUBSTRATE", IEEE TRANSACTIONS ON MAGNETICS,US,IEEE INC. NEW YORK, vol. 32, no. 5, 1 September 1996 (1996-09-01), pages 4532 - 4534, XP000634060, ISSN: 0018-9464 *

Also Published As

Publication number Publication date
EP0961301A1 (fr) 1999-12-01
ES2284215T3 (es) 2007-11-01
DE69837528D1 (de) 2007-05-24
WO1999026257A1 (fr) 1999-05-27
EP0961301B1 (fr) 2007-04-11
DE69837528T2 (de) 2007-08-09

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