DISKETTE TYPE MEMORY CARD ADAPTER, MAGNETIC SENSOR THEREFOR MAGNETIC CORE, METHOD FOR MANUFACTURING THE MAGNETIC CORE

Title:

DISKETTE TYPE MEMORY CARD ADAPTER, MAGNETIC SENSOR THEREFOR MAGNETIC CORE, METHOD FOR MANUFACTURING THE MAGNETIC CORE

Document Type and Number:

WIPO Patent Application WO/2000/045400

Kind Code:

A1

Abstract:

A magnetic core used in a magnetic sensor of a diskette type memory card adapter is manufactured by laminating a plurality of rapidly solidified alloy sheets and by punching the alloy laminate. This lamination is carried out with a hot-melt adhesive. A heat treatment is made at a temperature of 180 to 220 °C before the punching, or at a temperature of 180 to 540 °C after the punching. The direction of the length of the magnetic gap of the magnetic core is perpendicular to the direction of magnetic anisotropy of the sheets.

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Inventors:

NITANDA FUMIO (JP)
ARAKAWA SYUNSUKE (JP)
KOTANI TADASHI (JP)

Application Number:

PCT/JP2000/000352

Publication Date:

August 03, 2000

Filing Date:

January 25, 2000

Export Citation:

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Assignee:

HITACHI METALS LTD (JP)
HITACHI FERRITE ELECT LTD (JP)
NITANDA FUMIO (JP)
ARAKAWA SYUNSUKE (JP)
KOTANI TADASHI (JP)

International Classes:

G06K17/00; H01F3/02; G11B5/147; H01F41/02; (IPC1-7): H01F41/02; G01R33/02; H01F3/04

Foreign References:

JPH0390547A	1991-04-16
JPH01291408A	1989-11-24
JPS6022308A	1985-02-04
JPH1055416A	1998-02-24
JPH10198772A	1998-07-31

Other References: