ATE65860T1 - Magnetooptisches aufzeichnungsgeraet. - Google Patents

Magnetooptisches aufzeichnungsgeraet.

Info

Publication number
ATE65860T1
ATE65860T1 AT87105809T AT87105809T ATE65860T1 AT E65860 T1 ATE65860 T1 AT E65860T1 AT 87105809 T AT87105809 T AT 87105809T AT 87105809 T AT87105809 T AT 87105809T AT E65860 T1 ATE65860 T1 AT E65860T1
Authority
AT
Austria
Prior art keywords
magnetic field
laser beam
pulse
magnet
magnetooptical recording
Prior art date
Application number
AT87105809T
Other languages
English (en)
Inventor
Hideyoshi Horimai
Yoshio Aoki
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of ATE65860T1 publication Critical patent/ATE65860T1/de

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
    • G11B11/10532—Heads
    • G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
    • G11B11/10536—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using thermic beams, e.g. lasers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/28—Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Holo Graphy (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Liquid Crystal (AREA)
AT87105809T 1986-04-22 1987-04-21 Magnetooptisches aufzeichnungsgeraet. ATE65860T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP61093087A JP2609228B2 (ja) 1986-04-22 1986-04-22 光磁気記録装置
EP87105809A EP0242837B1 (de) 1986-04-22 1987-04-21 Magnetooptisches Aufzeichnungsgerät

Publications (1)

Publication Number Publication Date
ATE65860T1 true ATE65860T1 (de) 1991-08-15

Family

ID=14072742

Family Applications (1)

Application Number Title Priority Date Filing Date
AT87105809T ATE65860T1 (de) 1986-04-22 1987-04-21 Magnetooptisches aufzeichnungsgeraet.

Country Status (8)

Country Link
US (1) US4959820A (de)
EP (1) EP0242837B1 (de)
JP (1) JP2609228B2 (de)
KR (1) KR950001882B1 (de)
AT (1) ATE65860T1 (de)
AU (1) AU586924B2 (de)
CA (1) CA1328689C (de)
DE (1) DE3771763D1 (de)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101385A (en) * 1988-03-14 1992-03-31 Bernoulli Optical Systems Company Magneto-optical information storage system for flexible media having maximum overwrite efficiency
DE3811375A1 (de) * 1988-04-05 1989-10-19 Siemens Ag Datenspeichersystem
DE68921087T4 (de) * 1988-04-06 1996-06-13 Mitsubishi Electric Corp Gerät zur Aufnahme auf eine und Wiedergabe von einer optischen Scheibe.
US5014254A (en) * 1988-05-09 1991-05-07 U.S. Philips Corporation Magneto-optical recording method and magneto-optical recording apparatus
NL8902615A (nl) * 1988-11-15 1990-06-01 Seiko Epson Corp Optisch registratiestelsel.
JPH02265059A (ja) * 1989-04-06 1990-10-29 Ricoh Co Ltd 光磁気記録装置
JPH02308403A (ja) * 1989-05-23 1990-12-21 Sony Corp 光磁気デイスク装置
US5172364A (en) * 1989-08-01 1992-12-15 Mitsubishi Denki Kabushiki Kaisha Magneto-optic recording apparatus with controlled magnetic field generation
US5150338A (en) * 1989-08-10 1992-09-22 Hewlett-Packard Company Optical disk reading and writing system having magnetic write head mounted on an air-bearing slider
US5197049A (en) * 1989-08-11 1993-03-23 Apple Computer, Inc. Head and media for optical data storage
JPH03113758A (ja) * 1989-09-22 1991-05-15 Pioneer Electron Corp 光磁気ディスクプレーヤ
JPH03113757A (ja) * 1989-09-22 1991-05-15 Pioneer Electron Corp 光磁気ディスクプレーヤ
US5124961A (en) * 1989-12-28 1992-06-23 Fuji Xerox Co., Ltd. Floating head for use with a recording apparatus of magneto-optical memory device
US5278809A (en) * 1990-01-17 1994-01-11 Olympus Optical Co., Ltd. Photomagnetic recording apparatus recording with alternating magnetic field and D.C. magnetic field
US5235591A (en) * 1990-01-19 1993-08-10 Hitachi, Ltd. Stack type optical disc apparatus, sealed and separate type optical head therefor and optical disc medium
EP0439323B1 (de) * 1990-01-23 1996-04-17 Canon Kabushiki Kaisha Magnetooptisches Aufzeichnungsgerät
US5202863A (en) * 1990-09-11 1993-04-13 Matsushita Electric Industrial Co., Ltd. Magneto-optical disk unit compatible with different two types of magneto-optical disks and a magnetic-field generator suitable thereof
JP3065404B2 (ja) * 1991-11-18 2000-07-17 シャープ株式会社 外部磁界発生装置
JP3139723B2 (ja) * 1992-05-15 2001-03-05 キヤノン株式会社 光磁気記録装置
US5477367A (en) * 1992-12-04 1995-12-19 U.S. Philips Corporation Optical transmission system
US5636187A (en) * 1992-12-11 1997-06-03 Canon Kabushiki Kaisha Magnetooptical recording apparatus and magnetooptical recording method for canceling leakage magnetic fields associated with a recording medium and devices ancillary to the recording medium
JPH08235661A (ja) * 1995-02-24 1996-09-13 Pioneer Electron Corp 光磁気記録装置に用いられる光ピックアップ装置
JP3070516B2 (ja) * 1997-04-28 2000-07-31 日本電気株式会社 光ディスク装置
JP2000048374A (ja) * 1998-07-30 2000-02-18 Matsushita Electric Ind Co Ltd ディスク記録再生装置
US6865743B2 (en) * 1999-02-24 2005-03-08 Matsushita Electric Industrial Co., Ltd. Optical head and method of manufacturing the same
US6807025B1 (en) * 2001-12-21 2004-10-19 Maxtor Corporation Magnetic recording process
US7473656B2 (en) * 2003-10-23 2009-01-06 International Business Machines Corporation Method for fast and local anneal of anti-ferromagnetic (AF) exchange-biased magnetic stacks
KR20100000323A (ko) * 2008-06-24 2010-01-06 삼성전자주식회사 서보 마스터 및 이를 이용한 자기 전사 방법
JP2022184803A (ja) * 2021-06-01 2022-12-13 昭和電工株式会社 磁気特性測定装置及び磁気特性測定方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5794906A (en) * 1980-12-05 1982-06-12 Ricoh Co Ltd Optical magnetic recorder
JPS57162137A (en) * 1981-03-28 1982-10-05 Kokusai Denshin Denwa Co Ltd <Kdd> Photomagnetic recording and reproducing system
JPS59119507A (ja) * 1982-12-27 1984-07-10 Fujitsu Ltd 光磁気記録装置
US4660190A (en) * 1983-01-25 1987-04-21 Sharp Kabushiki Kaisha Optical focus position control in optical disc apparatus
JPS59148159A (ja) * 1983-02-15 1984-08-24 Canon Inc 光ピツクアツプ装置
JPS59172175A (ja) * 1983-03-22 1984-09-28 Ricoh Co Ltd 光磁気記録再生装置
JPH065585B2 (ja) * 1984-02-15 1994-01-19 株式会社日立製作所 光磁気記憶装置
JPS60214439A (ja) * 1984-04-11 1985-10-26 Seiko Epson Corp 光磁気ヘツド
JPS60214438A (ja) * 1984-04-11 1985-10-26 Seiko Epson Corp 光磁気ヘツド
JPS6196540A (ja) * 1984-10-18 1986-05-15 Seiko Epson Corp 光磁気記録再生装置
JPH06105507B2 (ja) * 1984-10-26 1994-12-21 日本電気株式会社 光磁気記録再生消去装置
JPH0721894B2 (ja) * 1985-02-19 1995-03-08 日本電気株式会社 光磁気記録方法
JP2533847B2 (ja) * 1985-10-17 1996-09-11 オリンパス光学工業株式会社 光磁気記録再生装置
US4811320A (en) * 1986-03-04 1989-03-07 Sanyo Electric Co., Ltd. Optical type pickup apparatus with lens holder supported by frame wires each having an end inserted into a frame hole

Also Published As

Publication number Publication date
DE3771763D1 (de) 1991-09-05
EP0242837B1 (de) 1991-07-31
KR950001882B1 (ko) 1995-03-04
JP2609228B2 (ja) 1997-05-14
KR870010506A (ko) 1987-11-30
US4959820A (en) 1990-09-25
AU586924B2 (en) 1989-07-27
AU7180887A (en) 1987-10-29
CA1328689C (en) 1994-04-19
JPS62248152A (ja) 1987-10-29
EP0242837A1 (de) 1987-10-28

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
EELA Cancelled due to lapse of time