JPS6443836A - Recording method for magneto-optical recording medium - Google Patents

Recording method for magneto-optical recording medium

Info

Publication number
JPS6443836A
JPS6443836A JP19919687A JP19919687A JPS6443836A JP S6443836 A JPS6443836 A JP S6443836A JP 19919687 A JP19919687 A JP 19919687A JP 19919687 A JP19919687 A JP 19919687A JP S6443836 A JPS6443836 A JP S6443836A
Authority
JP
Japan
Prior art keywords
magnetic field
initialization
medium
auxiliary layer
horizontal
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.)
Pending
Application number
JP19919687A
Other languages
Japanese (ja)
Inventor
Osamu Ishii
Iwao Hatakeyama
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP19919687A priority Critical patent/JPS6443836A/en
Publication of JPS6443836A publication Critical patent/JPS6443836A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
    • G11B11/10526—Bulk initialisation or erasing, e.g. at least one whole information track with a single action

Abstract

PURPOSE:To enable the initialization by a low magnetic field of a overwritable magneto-optical recording medium by forming the initializing a magnetic field of the auxiliary layer of said medium of two components perpendicular and horizontal to the film plane. CONSTITUTION:A recording layer 3 consisting of a thin film and the auxiliary layer 2 are formed on a glass substrate 1. An optical head 4 which outputs laser light 5 for recording is provided. Coils 8 are then provided on both sides of a permanent magnet 6 which generates the magnetic field for initialization so as to sandwich the magnet, then the magnetic field for initialization parallel with the image plane is generated. The inversion torque of magnetic moment is increased by applying this horizontal magnetic field to the medium. The smaller perpendicular magnetic field is, therefore, necessitated; in addition, the magnetic field to generate the magnetization inversion of the auxiliary layer 2 is controlled by controlling the horizontal magnetic field. The miniaturization of the device is thereby enabled.
JP19919687A 1987-08-11 1987-08-11 Recording method for magneto-optical recording medium Pending JPS6443836A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19919687A JPS6443836A (en) 1987-08-11 1987-08-11 Recording method for magneto-optical recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19919687A JPS6443836A (en) 1987-08-11 1987-08-11 Recording method for magneto-optical recording medium

Publications (1)

Publication Number Publication Date
JPS6443836A true JPS6443836A (en) 1989-02-16

Family

ID=16403738

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19919687A Pending JPS6443836A (en) 1987-08-11 1987-08-11 Recording method for magneto-optical recording medium

Country Status (1)

Country Link
JP (1) JPS6443836A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5444042A (en) * 1990-12-28 1995-08-22 Cortex Pharmaceuticals Method of treatment of neurodegeneration with calpain inhibitors
WO2002065464A1 (en) * 2001-02-12 2002-08-22 Koninklijke Philips Electronics N.V. Magnetic head with a permanent-magnet layer structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5444042A (en) * 1990-12-28 1995-08-22 Cortex Pharmaceuticals Method of treatment of neurodegeneration with calpain inhibitors
WO2002065464A1 (en) * 2001-02-12 2002-08-22 Koninklijke Philips Electronics N.V. Magnetic head with a permanent-magnet layer structure

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