GB2335118A - Magnetic tags and techniques - Google Patents
Magnetic tags and techniquesInfo
- 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- Withdrawn
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.
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) |
-
1997
- 1997-10-08 GB GB9908065A patent/GB2335118A/en not_active Withdrawn
Non-Patent Citations (1)
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) |