DE69327711D1 - Magnetooptisches aufzeichnungsmedium und verfahren zu seiner herstellung - Google Patents

Magnetooptisches aufzeichnungsmedium und verfahren zu seiner herstellung

Info

Publication number
DE69327711D1
DE69327711D1 DE69327711T DE69327711T DE69327711D1 DE 69327711 D1 DE69327711 D1 DE 69327711D1 DE 69327711 T DE69327711 T DE 69327711T DE 69327711 T DE69327711 T DE 69327711T DE 69327711 D1 DE69327711 D1 DE 69327711D1
Authority
DE
Germany
Prior art keywords
magneto
production
recording medium
optical recording
optical
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
DE69327711T
Other languages
English (en)
Other versions
DE69327711T2 (de
Inventor
Takeo Kawase
Masaya Ishida
Satoshi Nebashi
Satoshi Shimokawato
Toshiaki Mikoshiba
Shoji Hoshina
Atsushi Takakuwa
Hiromu Miyazawa
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.)
Intellectual Ventures Fund 83 LLC
Original Assignee
Seiko Epson 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
Priority claimed from JP20251492A external-priority patent/JPH06302024A/ja
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Application granted granted Critical
Publication of DE69327711D1 publication Critical patent/DE69327711D1/de
Publication of DE69327711T2 publication Critical patent/DE69327711T2/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
    • G11B11/10589—Details
    • G11B11/10591—Details for improving write-in properties, e.g. Curie-point temperature
    • 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
    • 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
    • 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
    • Y10S428/90—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
DE69327711T 1992-07-29 1993-07-28 Magnetooptisches aufzeichnungsmedium und verfahren zu seiner herstellung Expired - Lifetime DE69327711T2 (de)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP20251492A JPH06302024A (ja) 1992-07-29 1992-07-29 光磁気記録媒体および光磁気記録媒体の製造方法
JP31221592 1992-11-20
JP31221792 1992-11-20
JP4691093 1993-03-08
JP6201893 1993-03-22
JP7830493 1993-04-05
JP7987593 1993-04-06
PCT/JP1993/001062 WO1994003892A1 (en) 1992-07-29 1993-07-28 Magneto-optic recording medium and method of its manufacture method

Publications (2)

Publication Number Publication Date
DE69327711D1 true DE69327711D1 (de) 2000-03-02
DE69327711T2 DE69327711T2 (de) 2000-06-29

Family

ID=27564655

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69327711T Expired - Lifetime DE69327711T2 (de) 1992-07-29 1993-07-28 Magnetooptisches aufzeichnungsmedium und verfahren zu seiner herstellung

Country Status (5)

Country Link
US (2) US5772856A (de)
EP (1) EP0606498B1 (de)
CN (1) CN1051629C (de)
DE (1) DE69327711T2 (de)
WO (1) WO1994003892A1 (de)

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Publication number Priority date Publication date Assignee Title
DE4321851A1 (de) * 1993-07-01 1995-01-12 Philips Patentverwaltung Magnetooptisches Aufzeichnungsmedium
EP0740296A3 (de) * 1995-04-26 1998-02-25 Sanyo Electric Co. Ltd Magnetooptische Aufzeichnungsmedium
FR2743659A1 (fr) * 1996-01-16 1997-07-18 Rhone Poulenc Chimie Composition de matiere et dispositif a proprietes magnetiques et leurs procedes de preparation
WO1997026652A1 (fr) * 1996-01-19 1997-07-24 Seiko Epson Corporation Support d'enregistrement magneto-optique
JP3660072B2 (ja) * 1996-09-26 2005-06-15 シャープ株式会社 光磁気記録媒体及びその記録方法並びに光磁気記録装置
JPH10134438A (ja) * 1996-10-31 1998-05-22 Sony Corp 光磁気記録媒体の製造方法
US6403203B2 (en) 1997-05-29 2002-06-11 Hitachi, Ltd. Magnetic recording medium and magnetic recording apparatus using the same
JP2000222788A (ja) * 1999-02-03 2000-08-11 Sony Corp 光磁気記録媒体とその製造方法
US6590836B1 (en) * 1999-09-29 2003-07-08 Sanyo Electric Co., Ltd. Magneto optical recording medium capable of preventing a reproduction layer from having a degraded characteristic
JP2001101642A (ja) * 1999-09-30 2001-04-13 Fujitsu Ltd 磁気記録媒体及び磁気記憶装置
US6579635B2 (en) 2000-10-12 2003-06-17 International Business Machines Corporation Smoothing and stabilization of domain walls in perpendicularly polarized magnetic films
US6692619B1 (en) 2001-08-14 2004-02-17 Seagate Technology Llc Sputtering target and method for making composite soft magnetic films
US20050152234A1 (en) * 2002-08-13 2005-07-14 Fujitsu Limited Magneto-optical recording medium and magneto-optical storage device
JP2005050400A (ja) * 2003-07-30 2005-02-24 Canon Inc 光磁気記録媒体
JP2006127637A (ja) * 2004-10-28 2006-05-18 Hitachi Global Storage Technologies Netherlands Bv 垂直磁気記録媒体の製造方法
JP4324617B2 (ja) * 2007-02-26 2009-09-02 東京エレクトロン株式会社 スパッタ成膜方法及びスパッタ成膜装置
US8619527B2 (en) * 2009-12-22 2013-12-31 Panasonic Corporation Optical disk device, optical disk control method, and integrated circuit
US8374060B2 (en) * 2011-03-11 2013-02-12 Tdk Corporation Thermally-assisted magnetic recording method for writing data on a hard disk medium
US9449633B1 (en) * 2014-11-06 2016-09-20 WD Media, LLC Smooth structures for heat-assisted magnetic recording media

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JPS60197967A (ja) * 1984-03-22 1985-10-07 Canon Inc 光学的記録媒体
JPH07105082B2 (ja) * 1985-11-28 1995-11-13 ソニー株式会社 光磁気記録媒体
JPS62175946A (ja) * 1986-01-29 1987-08-01 Fujitsu Ltd 光磁気デイスク
JPH07111791B2 (ja) * 1986-05-31 1995-11-29 日新電機株式会社 光磁気記録媒体の製造方法
JPS63153752A (ja) * 1986-07-08 1988-06-27 Canon Inc 光磁気記録媒体及びその記録方法
JPS6348636A (ja) * 1986-08-14 1988-03-01 Seiko Epson Corp 光磁気記録媒体
CA1322408C (en) * 1986-08-20 1993-09-21 Tomiji Tanaka Thermomagnetic recording method applying power modulated laser on a magnetically coupled double layer structure of perpendicular anisotropy film
JPS6353735A (ja) * 1986-08-23 1988-03-08 Sony Corp 光磁気記録媒体
JPS63224054A (ja) * 1987-03-13 1988-09-19 Canon Inc 光磁気記録媒体の製造方法
DE3721660A1 (de) * 1987-06-26 1989-01-05 Siemens Ag Wicklung fuer elektrische maschinen oder apparate mit metalloxid-widerstaenden zur ueberspannungsbegrenzung
JPS6427052A (en) * 1987-07-22 1989-01-30 Oki Electric Ind Co Ltd Production of magneto-optical recording medium
JPS6473451A (en) * 1987-09-16 1989-03-17 Toshiba Corp Data processor
JP2535952B2 (ja) * 1987-09-18 1996-09-18 株式会社ニコン 磁性層間の交換結合力が制御された多層光磁気記録媒体
JPH01107349A (ja) * 1987-10-20 1989-04-25 Nec Corp 光磁気記録媒体
JPH01119939A (ja) * 1987-11-04 1989-05-12 Hitachi Maxell Ltd 光磁気記録媒体とその製造方法
EP0318925B1 (de) * 1987-11-30 1994-04-20 Sony Corporation Methode zum optischen Abtasten eines Signals aus einem magneto-optischen Speichermedium
JPH01173451A (ja) * 1987-12-28 1989-07-10 Sumitomo Metal Mining Co Ltd 光磁気記録媒体とその製造方法
JPH01237946A (ja) * 1988-03-18 1989-09-22 Fujitsu Ltd 光磁気記録装置
JPH01292648A (ja) * 1988-05-19 1989-11-24 Nikon Corp オーバーライト可能な光磁気記録媒体
JPS647349A (en) * 1988-05-19 1989-01-11 Nippon Telegraph & Telephone Optical memory medium
JPH02130739A (ja) * 1988-11-09 1990-05-18 Nec Corp 光磁気ディスク媒体
JP2830018B2 (ja) * 1989-03-01 1998-12-02 株式会社ニコン 光磁気記録媒体
JPH0319155A (ja) * 1989-06-15 1991-01-28 Nec Corp 光磁気記録媒体
CA2027870C (en) * 1989-10-21 2000-09-12 Tetsu Watanabe Magnetooptical recording medium and method for manufacturing the same
JPH03268250A (ja) * 1990-03-16 1991-11-28 Ricoh Co Ltd 光磁気記録媒体及び光磁気記録方法
JP3185932B2 (ja) * 1990-06-21 2001-07-11 セイコーエプソン株式会社 光磁気記録再生方法ならびに光磁気記録再生装置
JPH04281239A (ja) * 1990-12-28 1992-10-06 Sony Corp 光磁気記録媒体
JPH06162583A (ja) * 1992-11-19 1994-06-10 Canon Inc 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

Also Published As

Publication number Publication date
WO1994003892A1 (en) 1994-02-17
US5772856A (en) 1998-06-30
EP0606498B1 (de) 2000-01-26
EP0606498A4 (de) 1995-04-19
CN1051629C (zh) 2000-04-19
EP0606498A1 (de) 1994-07-20
DE69327711T2 (de) 2000-06-29
US5976688A (en) 1999-11-02
CN1089744A (zh) 1994-07-20

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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

Representative=s name: DERZEIT KEIN VERTRETER BESTELLT

8327 Change in the person/name/address of the patent owner

Owner name: BACETILOS APPLICATIONS LLC, WILMINGTON, DEL., US