GB2335118A - Magnetic tags and techniques - Google Patents

Magnetic tags and techniques

Info

Publication number
GB2335118A
GB2335118A GB9908065A GB9908065A GB2335118A GB 2335118 A GB2335118 A GB 2335118A GB 9908065 A GB9908065 A GB 9908065A GB 9908065 A GB9908065 A GB 9908065A GB 2335118 A GB2335118 A GB 2335118A
Authority
GB
United Kingdom
Prior art keywords
substrate
tags
magnetic
magnetisation
zones
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Withdrawn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
GB9908065A
Other versions
GB9908065D0 (en
Inventor
Andrew Nicholas Dames
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.)
Flying Null Ltd
Original Assignee
Flying Null 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
Priority claimed from GBGB9621000.0A external-priority patent/GB9621000D0/en
Application filed by Flying Null Ltd filed Critical Flying Null Ltd
Priority to GB9908065A priority Critical patent/GB2335118A/en
Publication of GB9908065D0 publication Critical patent/GB9908065D0/en
Publication of GB2335118A publication Critical patent/GB2335118A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V15/00—Tags attached to, or associated with, an object, in order to enable detection of the object

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

A multi-bit magnetic tag is disclosed which comprises a substrate (1) carrying a plurality of magnetised zones (2), the magnetic material from which said zones are formed being an anisotropic magnetic material having an axis of easy magnetisation; at least two of the magnetically active zones (2) are such that their easy axes of magnetisation are non-parallel. Tags of this form may be manufactured by sputtering a magnetically anisotropic material onto a substrate (1) carried on a coating drum while a non-uniform magnetic bias is applied to, or close to, the drum or the substrate (1) so as to influence the direction of the axis of easy magnetisation of the magnetically anisotropic material as it is deposited by the sputtering process. The coated substrate is then removed from the coating drum and cut into tags of the desired shape and size. Other multi-bit magnetic tags are also described.
GB9908065A 1996-10-09 1997-10-08 Magnetic tags and techniques Withdrawn GB2335118A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9908065A GB2335118A (en) 1996-10-09 1997-10-08 Magnetic tags and techniques

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9621000.0A GB9621000D0 (en) 1996-10-09 1996-10-09 Magnetic tags and techniques
PCT/GB1997/002760 WO1998015853A2 (en) 1996-10-09 1997-10-08 Multi-bit magnetic tag and its method of manufacture
GB9908065A GB2335118A (en) 1996-10-09 1997-10-08 Magnetic tags and techniques

Publications (2)

Publication Number Publication Date
GB9908065D0 GB9908065D0 (en) 1999-06-02
GB2335118A true GB2335118A (en) 1999-09-08

Family

ID=26310187

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9908065A Withdrawn GB2335118A (en) 1996-10-09 1997-10-08 Magnetic tags and techniques

Country Status (1)

Country Link
GB (1) GB2335118A (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Not yet advised *

Also Published As

Publication number Publication date
GB9908065D0 (en) 1999-06-02

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)