Title:
測定プローブ及びこれを有する証明装置
Document Type and Number:
Japanese Patent JP2005519287
Kind Code:
A
Abstract:
The invention refers to a measurement probe for measuring magnetization data of at least one item ( 7 ), specifically a security document comprising at least one magnetic security material (M), said measurement probe comprising at least one core free magnetizing coil ( 3 ) characterized in that at least two magnetic field sensors ( 4 s, 4 c, 8 s, 8 c) are disposed at both ends inside said coil ( 3 ) at its both ends. The invention relates further to an authentication device comprising said measurement probe and to an authentication method carried out by means of said measurement probe and authentication device.
Inventors:
Mueller, Edgar
Eger, Philip
Seto, Myron
Eger, Philip
Seto, Myron
Application Number:
JP2003573437A
Publication Date:
June 30, 2005
Filing Date:
March 04, 2002
Export Citation:
Assignee:
Sicpa Holding S.A.
International Classes:
G01R33/12; G01R33/14; G07D7/04; (IPC1-7): G01R33/12
Domestic Patent References:
| JPH1026608A | 1998-01-27 | |||
| JPH09119918A | 1997-05-06 | |||
| JP2001050934A | 2001-02-23 | |||
| JPH08338864A | 1996-12-24 | |||
| JPH08127997A | 1996-05-21 | |||
| JPH10269401A | 1998-10-09 |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Akio Chiba
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Akio Chiba