BR9908821A - Processo de recozimento em campo transverso para formar indicador de e.a.s. tendo uma mudança de etapa no fluxo magnético - Google Patents

Processo de recozimento em campo transverso para formar indicador de e.a.s. tendo uma mudança de etapa no fluxo magnético

Info

Publication number
BR9908821A
BR9908821A BR9908821-5A BR9908821A BR9908821A BR 9908821 A BR9908821 A BR 9908821A BR 9908821 A BR9908821 A BR 9908821A BR 9908821 A BR9908821 A BR 9908821A
Authority
BR
Brazil
Prior art keywords
step change
continuous tape
magnetic flux
magnetic
transverse field
Prior art date
Application number
BR9908821-5A
Other languages
English (en)
Inventor
Wing K Ho
Jiro Yamasaki
Richard Tellshow
Original Assignee
Sensormatic Electronics Corp
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 Sensormatic Electronics Corp filed Critical Sensormatic Electronics Corp
Publication of BR9908821A publication Critical patent/BR9908821A/pt

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
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/244—Tag manufacturing, e.g. continuous manufacturing processes
    • 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
    • H01F1/12—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
    • H01F1/15316—Amorphous metallic alloys, e.g. glassy metals based on Co
    • 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
    • H01F1/15341—Preparation processes therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Automation & Control Theory (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Burglar Alarm Systems (AREA)
  • Soft Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

"PROCESSO DE RECOZIMENTO EM CAMPO TRANSVERSO PARA FORMAR INDICADOR DE E.A.S. TENDO UMA MUDANçA DE ETAPA NO FLUXO MAGNéTICO" Um indicador (20) a ser usado em um sistema de vigilância de artigos (51) é formado pelo processamento de uma fita contínua (28) de material magnético tendo um eixo longitudinal. Domínios (42) são desenvolvidos no material magnético para produzir uma configuração de parede que inclui uma pluralidade de paredes de domínio substancialmente paralelas (40) se estendendo em uma direção de parede que é inclinada pelo menos 15° do eixo longitudinal da fita contínua. A fita continua é então adicionalmente processada para fazer com que a configuração de parede das paredes de domínio substancialmente paralelas permaneça em um estado fixo para valores de campo aplicado abaixo de um valor limiar. A fita contínua processada pode ser cortada para produzir elementos magnéticos discretos que exibem uma mudança de etapa no fluxo magnético quando o campo aplicado cruza um valor limiar.
BR9908821-5A 1998-03-18 1999-03-17 Processo de recozimento em campo transverso para formar indicador de e.a.s. tendo uma mudança de etapa no fluxo magnético BR9908821A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/044,045 US5926095A (en) 1998-03-18 1998-03-18 Transverse field annealing process to form E.A.S. marker having a step change in magnetic flux
PCT/US1999/005634 WO1999048069A1 (en) 1998-03-18 1999-03-17 Transverse field annealing process to form e.a.s. marker having a step change in magnetic flux

Publications (1)

Publication Number Publication Date
BR9908821A true BR9908821A (pt) 2000-11-21

Family

ID=21930223

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9908821-5A BR9908821A (pt) 1998-03-18 1999-03-17 Processo de recozimento em campo transverso para formar indicador de e.a.s. tendo uma mudança de etapa no fluxo magnético

Country Status (9)

Country Link
US (1) US5926095A (pt)
EP (1) EP1070306A1 (pt)
JP (1) JP2002507806A (pt)
CN (1) CN1297554A (pt)
AR (1) AR014735A1 (pt)
AU (1) AU3089999A (pt)
BR (1) BR9908821A (pt)
CA (1) CA2323517A1 (pt)
WO (1) WO1999048069A1 (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6472987B1 (en) 2000-07-14 2002-10-29 Massachusetts Institute Of Technology Wireless monitoring and identification using spatially inhomogeneous structures
WO2002006547A1 (fr) * 2000-07-17 2002-01-24 Nhk Spring Co., Ltd. Marqueur magnetique et procede de fabrication correspondant
US6696951B2 (en) * 2001-06-13 2004-02-24 3M Innovative Properties Company Field creation in a magnetic electronic article surveillance system
GB0523631D0 (en) * 2005-11-21 2005-12-28 Univ Cambridge Tech Magnetic tagging techniques
US11285509B2 (en) * 2018-01-16 2022-03-29 Kansai Paint Co., Ltd. Method for forming multilayer coating film

Family Cites Families (10)

* 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
US4980670A (en) * 1987-11-04 1990-12-25 Sensormatic Electronics Corporation Deactivatable E.A.S. marker having a step change in magnetic flux
US5083112A (en) * 1990-06-01 1992-01-21 Minnesota Mining And Manufacturing Company Multi-layer thin-film eas marker
US5121106A (en) * 1990-12-31 1992-06-09 Pitney Bowes Inc. Electronic article surveillance markers with diagonal deactivation elements
US5313192A (en) * 1992-07-02 1994-05-17 Sensormatic Electronics Corp. Deactivatable/reactivatable magnetic marker having a step change in magnetic flux
US5565849A (en) * 1995-02-22 1996-10-15 Sensormatic Electronics Corporation Self-biased magnetostrictive element for magnetomechanical electronic article surveillance systems
US5554974A (en) * 1994-11-23 1996-09-10 International Business Machines Corporation Encodable tag with radio frequency readout
JP3372117B2 (ja) * 1994-12-08 2003-01-27 ユニチカ株式会社 磁気マーカー及びその製造方法
US5602527A (en) * 1995-02-23 1997-02-11 Dainippon Ink & Chemicals Incorporated Magnetic marker for use in identification systems and an indentification system using such magnetic marker
CA2175262A1 (en) * 1995-05-24 1996-11-25 Hugo Lievens Magnetic antipilferage tag

Also Published As

Publication number Publication date
AU3089999A (en) 1999-10-11
CN1297554A (zh) 2001-05-30
CA2323517A1 (en) 1999-09-23
EP1070306A1 (en) 2001-01-24
US5926095A (en) 1999-07-20
AR014735A1 (es) 2001-03-28
JP2002507806A (ja) 2002-03-12
WO1999048069A1 (en) 1999-09-23

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Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired