DE3876133D1 - Vorrichtung und aufzeichnungstraeger zur magneto-optischen aufzeichnung. - Google Patents

Vorrichtung und aufzeichnungstraeger zur magneto-optischen aufzeichnung.

Info

Publication number
DE3876133D1
DE3876133D1 DE8888304128T DE3876133T DE3876133D1 DE 3876133 D1 DE3876133 D1 DE 3876133D1 DE 8888304128 T DE8888304128 T DE 8888304128T DE 3876133 T DE3876133 T DE 3876133T DE 3876133 D1 DE3876133 D1 DE 3876133D1
Authority
DE
Germany
Prior art keywords
magneto
optical recording
record carrier
record
carrier
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 - Fee Related
Application number
DE8888304128T
Other languages
English (en)
Other versions
DE3876133T2 (de
Inventor
Osamu Ishii
Koutarou Nonaka
Iwao Hatakeyama
Tetsuo Iijima
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 JP62110864A external-priority patent/JPH0814900B2/ja
Priority claimed from JP62226658A external-priority patent/JPS6470945A/ja
Priority claimed from JP62256386A external-priority patent/JPH01100752A/ja
Priority claimed from JP63023948A external-priority patent/JPH01201847A/ja
Priority claimed from JP63081232A external-priority patent/JPH01253849A/ja
Priority claimed from JP63083032A external-priority patent/JPH01256051A/ja
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Application granted granted Critical
Publication of DE3876133D1 publication Critical patent/DE3876133D1/de
Publication of DE3876133T2 publication Critical patent/DE3876133T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00Recording 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
    • G11B11/10Recording 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00Recording 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
    • G11B11/10Recording 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
    • G11B11/105Recording 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
    • G11B11/10502Recording 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 characterised by the transducing operation to be executed
    • G11B11/10504Recording
    • G11B11/10508Recording by modulating only the magnetic field at the transducer
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00Recording 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
    • G11B11/10Recording 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
    • G11B11/105Recording 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
    • G11B11/10502Recording 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 characterised by the transducing operation to be executed
    • G11B11/10517Overwriting or erasing
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00Recording 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
    • G11B11/10Recording 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
    • G11B11/105Recording 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
    • G11B11/10532Heads
    • G11B11/10534Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
    • G11B11/10536Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using thermic beams, e.g. lasers
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00Recording 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
    • G11B11/10Recording 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
    • G11B11/105Recording 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
    • G11B11/10582Record carriers characterised by the selection of the material or by the structure or form
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00Recording 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
    • G11B11/10Recording 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
    • G11B11/105Recording 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
    • G11B11/10582Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
DE8888304128T 1987-05-08 1988-05-06 Vorrichtung und aufzeichnungstraeger zur magneto-optischen aufzeichnung. Expired - Fee Related DE3876133T2 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP62110864A JPH0814900B2 (ja) 1987-05-08 1987-05-08 光磁気記録媒体への書き込み方法
JP62226658A JPS6470945A (en) 1987-09-11 1987-09-11 Writing reading method for magneto-optical recording medium
JP62256386A JPH01100752A (ja) 1987-10-13 1987-10-13 磁気記録、光再生用記録媒体
JP63023948A JPH01201847A (ja) 1988-02-05 1988-02-05 光磁気ディスク
JP63081232A JPH01253849A (ja) 1988-04-04 1988-04-04 光磁気記録媒体
JP63083032A JPH01256051A (ja) 1988-04-06 1988-04-06 光磁気記録媒体

Publications (2)

Publication Number Publication Date
DE3876133D1 true DE3876133D1 (de) 1993-01-07
DE3876133T2 DE3876133T2 (de) 1993-04-01

Family

ID=27549136

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8888304128T Expired - Fee Related DE3876133T2 (de) 1987-05-08 1988-05-06 Vorrichtung und aufzeichnungstraeger zur magneto-optischen aufzeichnung.

Country Status (4)

Country Link
US (1) US5051970A (de)
EP (1) EP0291248B1 (de)
KR (1) KR910003935B1 (de)
DE (1) DE3876133T2 (de)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01237945A (ja) * 1988-03-18 1989-09-22 Canon Inc 光磁気記録媒体
US5237548A (en) * 1988-06-01 1993-08-17 Hoechst Aktiengesellschaft Magneto-optic recording structure and method
US5191563A (en) * 1989-06-29 1993-03-02 Digital Equipment Corporation Method for increasing track density of magneto-optical storage media
US5168482A (en) * 1989-08-31 1992-12-01 Sony Corporation Magnetooptical recording and playback method employing multi-layer recording medium with record holding layer and playback layer
US5303225A (en) * 1989-10-30 1994-04-12 Matsushita Electrical Industrial Co., Ltd. Multi-layered optical disk with track and layer identification
JP2575511B2 (ja) * 1989-12-08 1997-01-29 インターナショナル・ビジネス・マシーンズ・コーポレーション 光磁気記録方法及び装置
JP2574911B2 (ja) * 1990-01-10 1997-01-22 シャープ株式会社 光磁気記録方法
JP2861188B2 (ja) * 1990-01-31 1999-02-24 ソニー株式会社 光磁気記録再生装置
JPH03250402A (ja) * 1990-02-28 1991-11-08 Canon Inc 磁気記録装置及びシステム
CA2043995C (en) * 1990-06-13 1997-06-24 Kenji Ohta Magneto-optical recording/reproducing device
JP2636957B2 (ja) * 1990-08-10 1997-08-06 シャープ株式会社 磁気記録再生装置
JP3130929B2 (ja) * 1990-08-10 2001-01-31 ミネソタ マイニング アンド マニュファクチャリング カンパニー 高い記憶密度と直接重ね書きケイパビリティを有する熱磁気記録システム
JPH04105235A (ja) * 1990-08-24 1992-04-07 Sony Corp 磁気ヘッド
US5402293A (en) * 1990-12-27 1995-03-28 Sony Electronics Inc. Magneto-optical head having a thin film coil recessed into a magnetic substrate
JPH056820A (ja) * 1990-12-28 1993-01-14 Sony Corp 光磁気記録媒体
JP3111479B2 (ja) * 1991-02-08 2000-11-20 ソニー株式会社 光磁気記録媒体
JPH056590A (ja) * 1991-06-28 1993-01-14 Toshiba Corp 光磁気記録装置
JP2690634B2 (ja) * 1991-07-08 1997-12-10 シャープ株式会社 光ヘッド
JP2812817B2 (ja) * 1991-07-08 1998-10-22 シャープ株式会社 光磁気記録媒体
US5166919A (en) * 1991-07-11 1992-11-24 International Business Machines Corporation Atomic scale electronic switch
US5457582A (en) * 1991-11-13 1995-10-10 Eastman Kodak Company Magneto-optical storage medium wherein heating a portion of a read layer changes the portion's magnetic orientation
JPH06309610A (ja) * 1993-04-28 1994-11-04 Sony Corp 磁気ヘッド
US5381390A (en) * 1993-06-03 1995-01-10 Eastman Kodak Company Directly overwrite information by using two radiation beams onto a single magneto-optical recording
JPH08249602A (ja) * 1995-03-06 1996-09-27 Mitsubishi Electric Corp 磁気式記憶再生方法ならびにそれに用いる磁気再生装置、磁気記憶媒体およびその製法
JPH09198734A (ja) * 1996-01-19 1997-07-31 Matsushita Electric Ind Co Ltd 光磁気ディスク装置
US6775100B1 (en) 1997-05-05 2004-08-10 Seagate Technology Llc Laser assisted track width definition and radial control with magnetic recording
US6136458A (en) 1997-09-13 2000-10-24 Kabushiki Kaisha Toshiba Ferrite magnetic film structure having magnetic anisotropy
WO1999053482A1 (en) * 1998-04-09 1999-10-21 Seagate Technology, Inc. Laser assisted track width definition and radial control with magnetic recording
JPWO2002027713A1 (ja) * 2000-09-25 2004-02-26 日立マクセル株式会社 情報記録媒体、情報記録装置及び記録方法
US7193933B2 (en) * 2001-07-23 2007-03-20 Sony Corporation Preheating bulk erasing device for magneto-optical disk
US6426662B1 (en) 2001-11-12 2002-07-30 Pericom Semiconductor Corp. Twisted-ring oscillator and delay line generating multiple phases using differential dividers and comparators to match delays
JP4087849B2 (ja) * 2002-12-24 2008-05-21 富士通株式会社 光磁気記録媒体の製造方法
JP2005209290A (ja) * 2004-01-23 2005-08-04 Hitachi Ltd 熱磁気転写型磁気記録方式および磁気ディスク装置
US20090244787A1 (en) * 2008-03-31 2009-10-01 Alan Paul Giorgi Perpendicular head with wide track writing capability and methods of media testing
JP2018019062A (ja) * 2016-07-27 2018-02-01 サムソン エレクトロ−メカニックス カンパニーリミテッド. インダクタ
US10950266B1 (en) * 2020-02-28 2021-03-16 Western Digital Technologies, Inc. In-situ NFT pre-treatment to accumulate optically transparent material on NFT to improve reliability

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55129909A (en) * 1979-03-22 1980-10-08 Olympus Optical Co Ltd Thermomagnetic recording and reproducing device
JPS5778652A (en) * 1980-11-01 1982-05-17 Daido Steel Co Ltd Thermal magnetic recording carrier and thermal magnetic recording system
JPS59104730A (ja) * 1982-12-03 1984-06-16 Nec Corp 光メモリ−装置
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
JPH07105081B2 (ja) * 1985-01-23 1995-11-13 株式会社日立製作所 光磁気ディスク装置及びその情報処理方法
JP2521908B2 (ja) * 1985-06-11 1996-08-07 株式会社ニコン オ―バ―ライト可能な光磁気記録方法、それに使用される光磁気記録装置及び光磁気記録媒体、並びに変調方法、変調装置及び光磁気記録媒体
US4694358A (en) * 1985-10-28 1987-09-15 Kerdix, Inc. Magneto-optic recording structure and method
CA1291565C (en) * 1986-01-27 1991-10-29 Masaaki Nishioka Optical recording medium
US4910725A (en) * 1986-04-23 1990-03-20 Drexler Technology Corporation Optical recording method for data cards
DE3752222T2 (de) * 1986-07-08 1999-03-25 Canon Kk Magnetoptisches Aufzeichnungsmedium mit der Möglichkeit des Überschreibens mit zwei oder mehr Magnetschichten und dieses Medium verwendende Aufzeichnungsmethode
US4805043A (en) * 1987-12-28 1989-02-14 Eastman Kodak Company Microgap recording using ferrimagnetic medium for magneto-optic playback

Also Published As

Publication number Publication date
KR910003935B1 (ko) 1991-06-17
DE3876133T2 (de) 1993-04-01
KR880014524A (ko) 1988-12-24
EP0291248A3 (en) 1989-08-23
US5051970A (en) 1991-09-24
EP0291248B1 (de) 1992-11-25
EP0291248A2 (de) 1988-11-17

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