JPS6472347A - Recording method for magneto-optical disk - Google Patents

Recording method for magneto-optical disk

Info

Publication number
JPS6472347A
JPS6472347A JP22890387A JP22890387A JPS6472347A JP S6472347 A JPS6472347 A JP S6472347A JP 22890387 A JP22890387 A JP 22890387A JP 22890387 A JP22890387 A JP 22890387A JP S6472347 A JPS6472347 A JP S6472347A
Authority
JP
Japan
Prior art keywords
magneto
recording
head
information
optical disk
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
JP22890387A
Other languages
Japanese (ja)
Inventor
Miyozo Maeda
Yasunobu Hashimoto
Kazuo Nakajima
Kenichi Ito
Seiya Ogawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP22890387A priority Critical patent/JPS6472347A/en
Publication of JPS6472347A publication Critical patent/JPS6472347A/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
    • 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
    • G11B11/10532—Heads

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To erase and record information in a state being similar to overwrite by providing as one body an erasing head and a recording head by placing a magneto- optical disk between them, erasing the information by the erasing head, and thereafter, immediately recording the information by the recording head. CONSTITUTION:The titled method uses a magneto-optical disk 7 of a clad type, in which layers are formed successively such as a ground film 3, a recording film 4 and a second transparent substrate 6 on a first transparent substrate 1 of a disk shape. Also, this method uses a magneto-optical head 18 in which a pair of erasing heads 8 in which a first magnet 10 for applying a magnetic field to a recording film 4 and a first laser light source for irradiating this recording film 4 are opposed, and a pair of recording heads 9 in which a second magnet 13 for applying a magnetic field to the recording film 4 and a second laser light source 15 for irradiating the recording film 4 are opposed are formed as one body alternately and adjacently, respectively. In such a state, by inserting the magneto-optical disk 7 between two pairs of magnets 10, 13 for constituting the magneto-optical head 18 and the laser light source 12, and rotating it, the information is erased and recorded continuously. In such a way, the information can be erased and recorded continuously in a state being similar to overwrite.
JP22890387A 1987-09-11 1987-09-11 Recording method for magneto-optical disk Pending JPS6472347A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22890387A JPS6472347A (en) 1987-09-11 1987-09-11 Recording method for magneto-optical disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22890387A JPS6472347A (en) 1987-09-11 1987-09-11 Recording method for magneto-optical disk

Publications (1)

Publication Number Publication Date
JPS6472347A true JPS6472347A (en) 1989-03-17

Family

ID=16883666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22890387A Pending JPS6472347A (en) 1987-09-11 1987-09-11 Recording method for magneto-optical disk

Country Status (1)

Country Link
JP (1) JPS6472347A (en)

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