JPS61107553A - 光磁気再生装置 - Google Patents

光磁気再生装置

Info

Publication number
JPS61107553A
JPS61107553A JP22874484A JP22874484A JPS61107553A JP S61107553 A JPS61107553 A JP S61107553A JP 22874484 A JP22874484 A JP 22874484A JP 22874484 A JP22874484 A JP 22874484A JP S61107553 A JPS61107553 A JP S61107553A
Authority
JP
Japan
Prior art keywords
magnetic recording
recording layer
magneto
optical
layer
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.)
Granted
Application number
JP22874484A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0513339B2 (enrdf_load_stackoverflow
Inventor
Kazuya Taki
和也 滝
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 JP22874484A priority Critical patent/JPS61107553A/ja
Priority to US06/792,591 priority patent/US4922454A/en
Priority to DE8585307828T priority patent/DE3584945D1/de
Priority to EP85307828A priority patent/EP0180459B1/en
Publication of JPS61107553A publication Critical patent/JPS61107553A/ja
Publication of JPH0513339B2 publication Critical patent/JPH0513339B2/ja
Granted 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
    • G11B11/10504—Recording
    • 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
    • G11B11/10515—Reproducing

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)
JP22874484A 1984-10-30 1984-10-30 光磁気再生装置 Granted JPS61107553A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP22874484A JPS61107553A (ja) 1984-10-30 1984-10-30 光磁気再生装置
US06/792,591 US4922454A (en) 1984-10-30 1985-10-29 Magneto-optical memory medium and apparatus for writing and reading information on and from the medium
DE8585307828T DE3584945D1 (de) 1984-10-30 1985-10-29 Magnetooptisches speichermedium und geraet zum schreiben auf und lesen von dem medium.
EP85307828A EP0180459B1 (en) 1984-10-30 1985-10-29 Magneto-optical memory medium and apparatus for writing and reading information on and from the medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22874484A JPS61107553A (ja) 1984-10-30 1984-10-30 光磁気再生装置

Publications (2)

Publication Number Publication Date
JPS61107553A true JPS61107553A (ja) 1986-05-26
JPH0513339B2 JPH0513339B2 (enrdf_load_stackoverflow) 1993-02-22

Family

ID=16881143

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22874484A Granted JPS61107553A (ja) 1984-10-30 1984-10-30 光磁気再生装置

Country Status (1)

Country Link
JP (1) JPS61107553A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62214538A (ja) * 1986-03-14 1987-09-21 Fujitsu Ltd 光磁気記録装置および担体
JPS62214539A (ja) * 1986-03-14 1987-09-21 Fujitsu Ltd 光磁気記録方法および装置
JPS62214540A (ja) * 1986-03-14 1987-09-21 Fujitsu Ltd 光磁気記録装置
JPS6316624U (enrdf_load_stackoverflow) * 1986-07-17 1988-02-03
US4905215A (en) * 1986-12-22 1990-02-27 Brother Kogyo Kabushiki Kaisha System for reading information from two storage layers of an optical disk in different manners
US4922454A (en) * 1984-10-30 1990-05-01 Brother Kogyo Kabushiki Kaisha Magneto-optical memory medium and apparatus for writing and reading information on and from the medium
WO1991015013A1 (en) * 1990-03-24 1991-10-03 Seiko Epson Corporation Magnetooptic recording medium, and method of magnetooptic recording and reproduction
US5420728A (en) * 1990-03-24 1995-05-30 Seiko Epson Corporation Magneto-optical recording medium including a plurality of recording layers having different curie temperatures and method of recording and reading
US5689391A (en) * 1989-12-28 1997-11-18 Thomson Consumer Electronics Magneto-optic multitrack reading head having a plurality of reflective rays

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4922454A (en) * 1984-10-30 1990-05-01 Brother Kogyo Kabushiki Kaisha Magneto-optical memory medium and apparatus for writing and reading information on and from the medium
JPS62214538A (ja) * 1986-03-14 1987-09-21 Fujitsu Ltd 光磁気記録装置および担体
JPS62214539A (ja) * 1986-03-14 1987-09-21 Fujitsu Ltd 光磁気記録方法および装置
JPS62214540A (ja) * 1986-03-14 1987-09-21 Fujitsu Ltd 光磁気記録装置
JPS6316624U (enrdf_load_stackoverflow) * 1986-07-17 1988-02-03
US4905215A (en) * 1986-12-22 1990-02-27 Brother Kogyo Kabushiki Kaisha System for reading information from two storage layers of an optical disk in different manners
US5689391A (en) * 1989-12-28 1997-11-18 Thomson Consumer Electronics Magneto-optic multitrack reading head having a plurality of reflective rays
WO1991015013A1 (en) * 1990-03-24 1991-10-03 Seiko Epson Corporation Magnetooptic recording medium, and method of magnetooptic recording and reproduction
US5420728A (en) * 1990-03-24 1995-05-30 Seiko Epson Corporation Magneto-optical recording medium including a plurality of recording layers having different curie temperatures and method of recording and reading

Also Published As

Publication number Publication date
JPH0513339B2 (enrdf_load_stackoverflow) 1993-02-22

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term