JPS6489055A - Magneto-optical recording device - Google Patents

Magneto-optical recording device

Info

Publication number
JPS6489055A
JPS6489055A JP24624087A JP24624087A JPS6489055A JP S6489055 A JPS6489055 A JP S6489055A JP 24624087 A JP24624087 A JP 24624087A JP 24624087 A JP24624087 A JP 24624087A JP S6489055 A JPS6489055 A JP S6489055A
Authority
JP
Japan
Prior art keywords
magneto
optical disc
disc
light spots
optical
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
JP24624087A
Other languages
Japanese (ja)
Inventor
Kazuya Taki
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.)
Brother Industries Ltd
Original Assignee
Brother Industries 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 Brother Industries Ltd filed Critical Brother Industries Ltd
Priority to JP24624087A priority Critical patent/JPS6489055A/en
Publication of JPS6489055A publication Critical patent/JPS6489055A/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

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To attain an overlight by irradiating two light spots simultaneously on a magneto-optical disc and impressing magnetic fields whose directions are opposite to each other respectively on the respective irradiation points of the magneto-optical disc. CONSTITUTION:The titled device is equipped with a multibeam optical head to irradiate the two light spots simultaneously on a magneto-optical disc 6 and a magnetic head 9 to impress the magnetic fields in opposite directions on the two light spots on the disc 6 arranged closely to the disc 6 in facing the optical head with the magneto-optical disc 6 between. A first light spot is continuously irradiated and the magnetic field in a prescribed direction is impressed and information recorded previously is erased. At the same time, a second light spot modulated by a signal to be newly recorded is irradiated and the magnetic field in the direction opposite at the time of the erasion. Thus, the information is rewritten into the new one and the overwrite is executed.
JP24624087A 1987-09-30 1987-09-30 Magneto-optical recording device Pending JPS6489055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24624087A JPS6489055A (en) 1987-09-30 1987-09-30 Magneto-optical recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24624087A JPS6489055A (en) 1987-09-30 1987-09-30 Magneto-optical recording device

Publications (1)

Publication Number Publication Date
JPS6489055A true JPS6489055A (en) 1989-04-03

Family

ID=17145593

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24624087A Pending JPS6489055A (en) 1987-09-30 1987-09-30 Magneto-optical recording device

Country Status (1)

Country Link
JP (1) JPS6489055A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60106042A (en) * 1983-11-14 1985-06-11 Matsushita Electric Ind Co Ltd Optical recording and reproducing device
JPS61196446A (en) * 1985-02-26 1986-08-30 Sony Corp Photomagnetic recording device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60106042A (en) * 1983-11-14 1985-06-11 Matsushita Electric Ind Co Ltd Optical recording and reproducing device
JPS61196446A (en) * 1985-02-26 1986-08-30 Sony Corp Photomagnetic recording device

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