DE3888109T2 - Magneto-optisches Aufzeichnungsmedium. - Google Patents

Magneto-optisches Aufzeichnungsmedium.

Info

Publication number
DE3888109T2
DE3888109T2 DE3888109T DE3888109T DE3888109T2 DE 3888109 T2 DE3888109 T2 DE 3888109T2 DE 3888109 T DE3888109 T DE 3888109T DE 3888109 T DE3888109 T DE 3888109T DE 3888109 T2 DE3888109 T2 DE 3888109T2
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
DE3888109T
Other languages
English (en)
Other versions
DE3888109D1 (de
Inventor
Katsuhisa Aratani
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.)
Sony Corp
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
Publication of DE3888109D1 publication Critical patent/DE3888109D1/de
Application granted granted Critical
Publication of DE3888109T2 publication Critical patent/DE3888109T2/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
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • 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
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9265—Special properties
    • Y10S428/928—Magnetic property
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12465—All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12931—Co-, Fe-, or Ni-base components, alternative to each other
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12986—Adjacent functionally defined components
DE3888109T 1987-12-04 1988-12-01 Magneto-optisches Aufzeichnungsmedium. Expired - Lifetime DE3888109T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62307070A JPH01149246A (ja) 1987-12-04 1987-12-04 光磁気記録媒体

Publications (2)

Publication Number Publication Date
DE3888109D1 DE3888109D1 (de) 1994-04-07
DE3888109T2 true DE3888109T2 (de) 1994-09-15

Family

ID=17964682

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3888109T Expired - Lifetime DE3888109T2 (de) 1987-12-04 1988-12-01 Magneto-optisches Aufzeichnungsmedium.

Country Status (4)

Country Link
US (1) US4882231A (de)
EP (1) EP0319004B1 (de)
JP (1) JPH01149246A (de)
DE (1) DE3888109T2 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2630976B2 (ja) * 1988-03-19 1997-07-16 富士通株式会社 光磁気記録媒体
DE68928843T2 (de) * 1988-08-24 1999-06-02 Mitsubishi Electric Corp Magnetooptisches speichermedium
NL8803168A (nl) * 1988-12-24 1990-07-16 Philips Nv Werkwijze voor het thermomagnetisch registreren van informatie en het optisch uitlezen van de geregistreerde informatie alsmede een registratie-element dat geschikt is voor toepassing in deze werkwijze.
JP2558365B2 (ja) * 1988-12-27 1996-11-27 キヤノン株式会社 光磁気記録媒体
US5087532A (en) * 1989-08-01 1992-02-11 Minnesota Mining And Manufacturing Company Direct-overwrite magneto-optic media
US5512366A (en) * 1989-11-14 1996-04-30 Mitsubishi Denki Kabushiki Kaisha Magneto-optic recording medium and apparatus
JP2503708B2 (ja) * 1989-11-14 1996-06-05 三菱電機株式会社 光磁気記録媒体及び装置
US5270994A (en) * 1989-09-08 1993-12-14 Sharp Kabushiki Kaisha Magneto-optical recording and reading method
JP2653523B2 (ja) * 1989-09-08 1997-09-17 シャープ株式会社 光磁気メモリ素子の記録再生方法並びにその装置
JPH03156752A (ja) * 1989-11-14 1991-07-04 Mitsubishi Electric Corp 光磁気記録媒体
US5258237A (en) * 1989-11-14 1993-11-02 Mitsubishi Denki Kabushiki Kaisha Magneto-optic recording medium
JP2536202B2 (ja) * 1989-12-22 1996-09-18 日本電気株式会社 光磁気記録媒体の製造方法
JP2757560B2 (ja) * 1990-11-26 1998-05-25 三菱電機株式会社 光磁気記録媒体
EP0747896B1 (de) * 1991-02-08 2000-05-10 Sony Corporation Magnetooptisches Aufzeichnungs- und/oder -wiedergabegerät
JP2959588B2 (ja) * 1991-02-14 1999-10-06 ソニー株式会社 光磁気ディスク及びそのセクタ管理情報の記録方法ならびに再生方法
EP0818783A3 (de) * 1991-07-16 1999-04-14 Canon Kabushiki Kaisha Magneto-optisches Aufzeichnungsmedium und -verfahren
US5637411A (en) * 1991-07-29 1997-06-10 Hitachi Maxell, Ltd. Magneto-optical recording medium and process for producing the same
US5361248A (en) * 1992-06-01 1994-11-01 Eastman Kodak Company Direct overwrite magneto-optical storage medium not requiring an initialization magnet
JP2925424B2 (ja) * 1992-09-09 1999-07-28 三菱電機株式会社 オーバーライト可能な高密度光磁気記録媒体
JP2957367B2 (ja) * 1993-01-07 1999-10-04 シャープ株式会社 光磁気記録媒体およびその記録方法と記録再生方法
DE4320514A1 (de) * 1993-06-22 1995-01-05 Forschungszentrum Juelich Gmbh Neues optisches Schreibverfahren und Schichtsystem für magnetooptische Datenspeicher
JP2664330B2 (ja) * 1993-09-02 1997-10-15 富士通株式会社 光磁気記録媒体
CN1170196A (zh) * 1996-06-10 1998-01-14 索尼株式会社 光盘记录媒体及保护膜形成方法
US6226233B1 (en) 1996-07-30 2001-05-01 Seagate Technology, Inc. Magneto-optical system utilizing MSR media

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4293621A (en) * 1978-10-12 1981-10-06 Nippon Hoso Kyokai Recording medium
JPS5769541A (en) * 1980-10-17 1982-04-28 Olympus Optical Co Ltd Recording medium and recording and reproducing system using sand medium
JPS5997292A (ja) * 1982-11-26 1984-06-05 Victor Co Of Japan Ltd カラ−テレビジヨン撮像装置
JPH0670858B2 (ja) * 1983-05-25 1994-09-07 ソニー株式会社 光磁気記録媒体とその製法
US4556291A (en) * 1983-08-08 1985-12-03 Xerox Corporation Magneto-optic storage media
JPS6066349A (ja) * 1983-09-22 1985-04-16 Agency Of Ind Science & Technol 光熱磁気記録媒体およびその製造方法
JPS60243840A (ja) * 1984-05-18 1985-12-03 Fujitsu Ltd 光磁気記録体
JPS61117747A (ja) * 1984-11-12 1986-06-05 Nippon Kogaku Kk <Nikon> ２層膜光磁気記録媒体
JPS61193886A (ja) * 1985-02-22 1986-08-28 Tdk Corp 光記録媒体
CA1254385A (en) * 1985-07-26 1989-05-23 Noboru Sato Magneto-optical recording medium having amorphous artificially layered structure of rare earth element and transition metal element
US4649519A (en) * 1985-09-30 1987-03-10 International Business Machines Corporation Self biasing thermal magneto-optic medium
US4789606A (en) * 1986-04-17 1988-12-06 Fuji Photo Film Co., Ltd. Magneto-optical recording medium
JPS6348637A (ja) * 1986-08-16 1988-03-01 Canon Inc 光磁気記録媒体及び光磁気記録方法
EP0258978B1 (de) * 1986-07-08 1998-10-07 Canon Kabushiki Kaisha Magnetoptisches Aufzeichnungsmedium mit der Möglichkeit des Überschreibens mit zwei oder mehr Magnetschichten und dieses Medium verwendende Aufzeichnungsmethode
AU600576B2 (en) * 1987-04-24 1990-08-16 Sony Corporation Thermomagnetic recording method applying power modulated laser on a magnetically coupled multi-layer structure of perpendicular anisotropy magnetic film

Also Published As

Publication number Publication date
EP0319004A3 (en) 1990-05-16
DE3888109D1 (de) 1994-04-07
EP0319004B1 (de) 1994-03-02
JPH01149246A (ja) 1989-06-12
EP0319004A2 (de) 1989-06-07
US4882231A (en) 1989-11-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

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