ES2148211T3 - Marcador de eas (vigilancia electronica de articulos) de pelicula delgada de doble estado. - Google Patents

Marcador de eas (vigilancia electronica de articulos) de pelicula delgada de doble estado.

Info

Publication number
ES2148211T3
ES2148211T3 ES93403099T ES93403099T ES2148211T3 ES 2148211 T3 ES2148211 T3 ES 2148211T3 ES 93403099 T ES93403099 T ES 93403099T ES 93403099 T ES93403099 T ES 93403099T ES 2148211 T3 ES2148211 T3 ES 2148211T3
Authority
ES
Spain
Prior art keywords
fine
magnetizable
film
thin film
double state
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.)
Expired - Lifetime
Application number
ES93403099T
Other languages
English (en)
Spanish (es)
Inventor
Ching-Long Tsai
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
Application granted granted Critical
Publication of ES2148211T3 publication Critical patent/ES2148211T3/es
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
    • G08B13/2411—Tag deactivation
    • 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
    • G08B13/2428—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

Landscapes

  • 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)
  • Thin Magnetic Films (AREA)
ES93403099T 1992-12-23 1993-12-20 Marcador de eas (vigilancia electronica de articulos) de pelicula delgada de doble estado. Expired - Lifetime ES2148211T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US99618292A 1992-12-23 1992-12-23

Publications (1)

Publication Number Publication Date
ES2148211T3 true ES2148211T3 (es) 2000-10-16

Family

ID=25542596

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93403099T Expired - Lifetime ES2148211T3 (es) 1992-12-23 1993-12-20 Marcador de eas (vigilancia electronica de articulos) de pelicula delgada de doble estado.

Country Status (6)

Country Link
EP (1) EP0604293B1 (de)
JP (1) JPH06231376A (de)
AU (1) AU669014B2 (de)
CA (1) CA2109643C (de)
DE (1) DE69328819T2 (de)
ES (1) ES2148211T3 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0782013A3 (de) * 1995-12-27 1998-08-12 Unitika Ltd. Magnetisches Markierungselement
JPH09180936A (ja) * 1995-12-27 1997-07-11 Unitika Ltd 磁気素子
US5699047A (en) * 1996-01-19 1997-12-16 Minnesota Mining And Manufacturing Co. Electronic article surveillance markers for direct application to optically recorded media
JPH09232142A (ja) * 1996-02-28 1997-09-05 Unitika Ltd 磁気素子及びその製造方法
JP2002334307A (ja) * 2001-05-08 2002-11-22 Nhk Spring Co Ltd 合成樹脂成形体

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295028B1 (de) * 1987-06-08 1993-04-14 Esselte Meto International GmbH Magnetische Vorrichtungen
GB8900398D0 (en) * 1989-01-09 1989-03-08 Scient Generics Ltd Magnetic materials
US5368948A (en) * 1989-01-09 1994-11-29 Esselte Meto International Produktions Magnetic materials for security applications
US5015993A (en) * 1989-06-29 1991-05-14 Pitney Bowes Inc. Ferromagnetic alloys with high nickel content and high permeability
US5083112A (en) * 1990-06-01 1992-01-21 Minnesota Mining And Manufacturing Company Multi-layer thin-film eas marker

Also Published As

Publication number Publication date
CA2109643C (en) 2002-03-26
JPH06231376A (ja) 1994-08-19
AU669014B2 (en) 1996-05-23
DE69328819T2 (de) 2000-12-28
EP0604293B1 (de) 2000-06-07
AU5180793A (en) 1994-07-07
CA2109643A1 (en) 1994-06-24
EP0604293A1 (de) 1994-06-29
DE69328819D1 (de) 2000-07-13

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