DE69726686D1 - Magnetooptisches Aufzeichnungsmedium - Google Patents

Magnetooptisches Aufzeichnungsmedium

Info

Publication number
DE69726686D1
DE69726686D1 DE69726686T DE69726686T DE69726686D1 DE 69726686 D1 DE69726686 D1 DE 69726686D1 DE 69726686 T DE69726686 T DE 69726686T DE 69726686 T DE69726686 T DE 69726686T DE 69726686 D1 DE69726686 D1 DE 69726686D1
Authority
DE
Germany
Prior art keywords
magneto
recording medium
optical recording
optical
medium
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.)
Expired - Lifetime
Application number
DE69726686T
Other languages
English (en)
Other versions
DE69726686T2 (de
Inventor
Toshifumi Kawano
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.)
Mitsubishi Chemical Corp
Original Assignee
Mitsubishi Chemical 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 Mitsubishi Chemical Corp filed Critical Mitsubishi Chemical Corp
Application granted granted Critical
Publication of DE69726686D1 publication Critical patent/DE69726686D1/de
Publication of DE69726686T2 publication Critical patent/DE69726686T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
DE69726686T 1996-10-18 1997-10-16 Magnetooptisches Aufzeichnungsmedium Expired - Lifetime DE69726686T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8276294A JPH10124948A (ja) 1996-10-18 1996-10-18 光磁気記録媒体

Publications (2)

Publication Number Publication Date
DE69726686D1 true DE69726686D1 (de) 2004-01-22
DE69726686T2 DE69726686T2 (de) 2004-10-07

Family

ID=17567452

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69726686T Expired - Lifetime DE69726686T2 (de) 1996-10-18 1997-10-16 Magnetooptisches Aufzeichnungsmedium

Country Status (4)

Country Link
US (1) US5850383A (de)
EP (1) EP0837464B1 (de)
JP (1) JPH10124948A (de)
DE (1) DE69726686T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6144631A (en) * 1998-04-30 2000-11-07 Mitsubishi Chemical Corporation Information recording medium, and readout method and readout apparatus therefor
JP2000057647A (ja) * 1998-08-07 2000-02-25 Sony Corp 光磁気記録媒体
US6430116B1 (en) 1999-05-11 2002-08-06 Mitsubishi Chemical Corporation Magneto-optical storage medium having first and second recording layers
JP2001176143A (ja) * 1999-12-20 2001-06-29 Fujitsu Ltd 光磁気情報再生装置
US20040027981A1 (en) * 2000-10-24 2004-02-12 Schoeppel Wolfgang G Optical storage medium
WO2005122163A1 (ja) * 2004-06-09 2005-12-22 Fujitsu Limited 記録媒体

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03113851A (ja) * 1989-09-26 1991-05-15 Fuji Photo Film Co Ltd 光磁気記録媒体
JPH0438736A (ja) * 1990-06-04 1992-02-07 Canon Inc 光磁気記録媒体
JPH0438735A (ja) * 1990-06-04 1992-02-07 Canon Inc 光磁気記録媒体
JPH04268226A (ja) * 1990-11-19 1992-09-24 Komag Inc 磁気光学的データ記憶媒体構造及びその製造方法
US5455818A (en) * 1992-01-22 1995-10-03 Brother Kogyo Kabushiki Kaisha Optical recording medium
EP0974961B1 (de) * 1992-11-06 2003-04-02 Sharp Kabushiki Kaisha Magnetooptischer Aufzeichnungsträger und Verfahren zur Aufzeichnung und Wiedergabe und für den magnetooptischen Aufzeichnungsträger ausgebildetes optische Kopf
US5602825A (en) * 1994-01-19 1997-02-11 Kabushiki Kaisha Toshiba Optical disk and optical disk apparatus
US5581539A (en) * 1994-08-12 1996-12-03 Mitsubishi Chemical Corporation Optical recording medium
JPH08212598A (ja) * 1995-02-01 1996-08-20 Pioneer Electron Corp 光ディスク及び光ディスク再生装置
JPH09128827A (ja) * 1995-08-29 1997-05-16 Sony Corp 光磁気記録媒体、記録方法及び光磁気記録装置

Also Published As

Publication number Publication date
EP0837464B1 (de) 2003-12-10
EP0837464A3 (de) 2000-10-11
DE69726686T2 (de) 2004-10-07
EP0837464A2 (de) 1998-04-22
JPH10124948A (ja) 1998-05-15
US5850383A (en) 1998-12-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition