DE69730080D1 - Magnetooptischer Aufzeichnungsträger - Google Patents

Magnetooptischer Aufzeichnungsträger

Info

Publication number
DE69730080D1
DE69730080D1 DE69730080T DE69730080T DE69730080D1 DE 69730080 D1 DE69730080 D1 DE 69730080D1 DE 69730080 T DE69730080 T DE 69730080T DE 69730080 T DE69730080 T DE 69730080T DE 69730080 D1 DE69730080 D1 DE 69730080D1
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
DE69730080T
Other languages
English (en)
Other versions
DE69730080T2 (de
Inventor
Junji Hirokane
Junichiro Nakayama
Akira Takahashi
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Publication of DE69730080D1 publication Critical patent/DE69730080D1/de
Application granted granted Critical
Publication of DE69730080T2 publication Critical patent/DE69730080T2/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
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • 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
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
DE69730080T 1996-05-27 1997-05-27 Magnetooptischer Aufzeichnungsträger Expired - Lifetime DE69730080T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP13191796 1996-05-27
JP13191796A JP3781823B2 (ja) 1996-05-27 1996-05-27 光磁気記録媒体及びその再生方法

Publications (2)

Publication Number Publication Date
DE69730080D1 true DE69730080D1 (de) 2004-09-09
DE69730080T2 DE69730080T2 (de) 2005-08-11

Family

ID=15069218

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69730080T Expired - Lifetime DE69730080T2 (de) 1996-05-27 1997-05-27 Magnetooptischer Aufzeichnungsträger

Country Status (5)

Country Link
US (1) US5939187A (de)
EP (1) EP0810594B1 (de)
JP (1) JP3781823B2 (de)
KR (1) KR100248592B1 (de)
DE (1) DE69730080T2 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0954993A (ja) * 1995-08-15 1997-02-25 Canon Inc 光磁気記録媒体及び該媒体の情報再生方法
JP3545133B2 (ja) * 1996-07-23 2004-07-21 シャープ株式会社 光磁気記録媒体の再生方法及び光磁気記録媒体
JP3400251B2 (ja) * 1996-07-30 2003-04-28 シャープ株式会社 光磁気記録媒体の再生方法及び光磁気記録媒体
US6147939A (en) 1997-03-06 2000-11-14 Sharp Kabushiki Kaisha Magneto-optical recording medium having intermediate layer of in-plane magnetization
KR19990023151A (ko) * 1997-08-27 1999-03-25 사토 도리 광자기기록매체 및 그 재생방법
JP3108397B2 (ja) 1997-10-13 2000-11-13 三洋電機株式会社 光磁気記録媒体
JP2989575B2 (ja) * 1997-12-12 1999-12-13 三洋電機株式会社 光磁気記録媒体
US6141297A (en) * 1998-03-11 2000-10-31 Lg Electronics Inc. Magneto-optical recording medium
JP3492525B2 (ja) * 1998-06-19 2004-02-03 シャープ株式会社 光磁気記録媒体
KR100525369B1 (ko) * 1998-08-18 2005-12-28 엘지전자 주식회사 광자기 기록 매체
KR100447159B1 (ko) * 1998-08-21 2004-12-04 엘지전자 주식회사 광자기기록매체
JP3568787B2 (ja) 1998-09-08 2004-09-22 シャープ株式会社 光磁気記録媒体及び再生装置
JP3519293B2 (ja) * 1998-11-20 2004-04-12 シャープ株式会社 光磁気記録媒体、光磁気記録媒体の再生方法、光磁気記録再生装置
JP3519295B2 (ja) 1998-11-30 2004-04-12 シャープ株式会社 光磁気記録媒体
JP3476698B2 (ja) 1999-01-29 2003-12-10 シャープ株式会社 光磁気記録媒体
JP3492233B2 (ja) 1999-03-31 2004-02-03 シャープ株式会社 光磁気記録媒体及びその再生方法
JP3436709B2 (ja) 1999-06-28 2003-08-18 シャープ株式会社 光磁気記録媒体及びその再生方法
JP3995833B2 (ja) 1999-06-29 2007-10-24 シャープ株式会社 光磁気記録媒体
JP3434242B2 (ja) * 1999-07-29 2003-08-04 シャープ株式会社 光磁気記録媒体及びその再生方法
JP3626050B2 (ja) 1999-11-02 2005-03-02 シャープ株式会社 光磁気記録媒体及びその記録方法
JP2001222843A (ja) * 2000-02-07 2001-08-17 Sony Corp 光磁気記録媒体
JP2002358616A (ja) * 2000-06-12 2002-12-13 Toshiba Corp 磁気記録媒体および磁気記録装置
JP2002170291A (ja) 2000-11-29 2002-06-14 Sony Corp 光磁気記録媒体
JP2002170292A (ja) 2000-12-01 2002-06-14 Fujitsu Ltd 光磁気記録媒体及びその再生方法
JP2002329352A (ja) 2001-04-27 2002-11-15 Sharp Corp 光磁気記録媒体
KR100499136B1 (ko) * 2002-12-14 2005-07-04 삼성전자주식회사 전자 스핀의존 산란을 이용한 자성매체 및 자성매체정보재생장치 및 재생방법

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4831851A (en) 1986-04-10 1989-05-23 Supra Products, Inc. Combination/electronic lock system
US5307656A (en) 1990-12-17 1994-05-03 La Gard, Inc. High security electronic dial combination lock
EP1143434A3 (de) * 1992-08-28 2001-12-12 Canon Kabushiki Kaisha Magnetooptisches Aufzeichnungsmedium und Informationsaufzeichungs- und Wiedergabeverfahren damit
JP2986622B2 (ja) * 1992-09-02 1999-12-06 シャープ株式会社 光磁気メモリー素子およびその記録再生方法
JP2938284B2 (ja) * 1992-10-06 1999-08-23 シャープ株式会社 光磁気記録媒体及びこれを用いた記録再生方法
DE69331926T2 (de) * 1992-11-06 2002-11-28 Sharp Kk Magnetooptischer Aufzeichungsträger, Aufzeichnungs- und Wiedergabemethode sowie für diesen magnetooptischen Aufzeichnungsträger entworfener optischer Abtastkopf
JPH06162589A (ja) * 1992-11-18 1994-06-10 Ricoh Co Ltd 光磁気記録媒体及び光磁気記録方法
US5662988A (en) * 1993-01-22 1997-09-02 Sharp Kabushiki Kaisha Magneto-optical recording medium
US5563852A (en) * 1993-12-06 1996-10-08 Sharp Kabushiki Kaisha Magneto-optical recording medium having a readout layer with varying composition and curie temperature
JPH07244876A (ja) * 1994-03-01 1995-09-19 Sharp Corp 光磁気記録媒体及び光磁気記録再生方法
JPH07320319A (ja) * 1994-05-26 1995-12-08 Sanyo Electric Co Ltd 光磁気記録メディア
JPH08106662A (ja) * 1994-10-05 1996-04-23 Teijin Ltd 光磁気記録媒体
DE19536796B4 (de) * 1994-10-19 2005-11-24 Sharp K.K. Magnetooptisches Aufzeichnungsmedium
JP3177395B2 (ja) * 1995-01-31 2001-06-18 シャープ株式会社 光磁気記録媒体及びその再生方法
DE19606374A1 (de) * 1996-02-21 1997-08-28 Thomas Kniep Sattelauflager für eine Sattelzugmaschine

Also Published As

Publication number Publication date
EP0810594B1 (de) 2004-08-04
KR100248592B1 (ko) 2000-03-15
EP0810594A2 (de) 1997-12-03
JPH09320134A (ja) 1997-12-12
JP3781823B2 (ja) 2006-05-31
EP0810594A3 (de) 1998-07-22
DE69730080T2 (de) 2005-08-11
KR970076597A (ko) 1997-12-12
US5939187A (en) 1999-08-17

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Legal Events

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