DE69115426D1 - Magneto-optisches Aufzeichnungsmedium - Google Patents

Magneto-optisches Aufzeichnungsmedium

Info

Publication number
DE69115426D1
DE69115426D1 DE69115426T DE69115426T DE69115426D1 DE 69115426 D1 DE69115426 D1 DE 69115426D1 DE 69115426 T DE69115426 T DE 69115426T DE 69115426 T DE69115426 T DE 69115426T DE 69115426 D1 DE69115426 D1 DE 69115426D1
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
DE69115426T
Other languages
English (en)
Inventor
Hideo Iiyori
Shinji Takayama
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE69115426D1 publication Critical patent/DE69115426D1/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
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Thin Magnetic Films (AREA)
DE69115426T 1990-10-05 1991-09-24 Magneto-optisches Aufzeichnungsmedium Expired - Lifetime DE69115426D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2266606A JPH0690976B2 (ja) 1990-10-05 1990-10-05 光磁気記録媒体

Publications (1)

Publication Number Publication Date
DE69115426D1 true DE69115426D1 (de) 1996-01-25

Family

ID=17433152

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69115426T Expired - Lifetime DE69115426D1 (de) 1990-10-05 1991-09-24 Magneto-optisches Aufzeichnungsmedium

Country Status (9)

Country Link
US (1) US5173885A (de)
EP (1) EP0479474B1 (de)
JP (1) JPH0690976B2 (de)
KR (1) KR950005036B1 (de)
CN (1) CN1022872C (de)
CA (1) CA2051603C (de)
DE (1) DE69115426D1 (de)
HK (1) HK72096A (de)
MY (1) MY131057A (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2733127B2 (ja) * 1990-08-07 1998-03-30 シャープ株式会社 光磁気記録装置
DE4103854A1 (de) * 1991-02-08 1992-08-27 Thomson Brandt Gmbh Optische abtastvorrichtung
US5648161A (en) * 1991-11-22 1997-07-15 Seiko Epson Corporation Magneto-optical recording medium having large kerr rotational angle in short wavelength range
JPH05282723A (ja) * 1992-03-31 1993-10-29 Matsushita Electric Ind Co Ltd 光磁気ヘッド装置
JPH06162583A (ja) * 1992-11-19 1994-06-10 Canon Inc 光磁気記録媒体
US5631559A (en) * 1993-03-05 1997-05-20 Northeastern University Method and apparatus for performing magnetic field measurements using magneto-optic kerr effect sensors
DE4321851A1 (de) * 1993-07-01 1995-01-12 Philips Patentverwaltung Magnetooptisches Aufzeichnungsmedium
CA2127059A1 (en) * 1993-07-02 1995-01-03 Masahiko Sekiya Magneto-optical recording medium
JP2912154B2 (ja) * 1994-03-24 1999-06-28 シャープ株式会社 磁気光学記録媒体およびその製造方法
JP2005222669A (ja) * 2004-01-05 2005-08-18 Fujitsu Ltd 磁気記録媒体および磁気記憶装置
US7458521B2 (en) * 2004-10-30 2008-12-02 Norman Ivans Irrigation unit having a control system and a data storage unit
US7191955B2 (en) * 2004-12-22 2007-03-20 Norman Ivans Irrigation unit having a control system that performs a self-test and a cleaner that cleans the unit
US7097113B2 (en) * 2004-01-20 2006-08-29 Norman Ivans Irrigation unit including a power generator
US7349763B2 (en) * 2004-10-30 2008-03-25 Norman Ivans System and method for systematically irrigating subregions of an irrigation region
US7617992B2 (en) * 2004-10-30 2009-11-17 Norman Ivans System and method for maintaining irrigation accuracy of an irrigation system
US7708206B2 (en) * 2004-12-22 2010-05-04 Norman Ivans Irrigation unit including a nozzle having greater accuracy and improved adjustment properties
ITMI20110803A1 (it) * 2011-05-10 2012-11-11 Claber Spa Impianto di irrigazione a controllo remoto.
KR102391800B1 (ko) * 2018-06-15 2022-04-29 주식회사 엘지화학 비정질 박막의 제조방법

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4871614A (en) * 1986-07-09 1989-10-03 Canon Kabushiki Kaisha Opto-magnetic recording medium having three exchange-coupled magnetic layers
JPS63249951A (ja) * 1987-04-03 1988-10-17 Mitsubishi Electric Corp 光磁気記録情報担体
JPH01237945A (ja) * 1988-03-18 1989-09-22 Canon Inc 光磁気記録媒体
JP2701403B2 (ja) * 1988-12-29 1998-01-21 ソニー株式会社 光磁気デイスク装置
JP2646398B2 (ja) * 1989-09-20 1997-08-27 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン 光磁気記録媒体

Also Published As

Publication number Publication date
KR950005036B1 (ko) 1995-05-17
JPH0690976B2 (ja) 1994-11-14
HK72096A (en) 1996-05-03
CA2051603A1 (en) 1992-04-06
CN1022872C (zh) 1993-11-24
CN1061298A (zh) 1992-05-20
JPH04150010A (ja) 1992-05-22
EP0479474A3 (en) 1993-02-24
EP0479474A2 (de) 1992-04-08
EP0479474B1 (de) 1995-12-13
KR920008685A (ko) 1992-05-28
US5173885A (en) 1992-12-22
CA2051603C (en) 1995-09-12
MY131057A (en) 2007-07-31

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Legal Events

Date Code Title Description
8332 No legal effect for de