JP2003317337A - 光磁気記録媒体及び記録方法 - Google Patents

光磁気記録媒体及び記録方法

Info

Publication number
JP2003317337A
JP2003317337A JP2002126267A JP2002126267A JP2003317337A JP 2003317337 A JP2003317337 A JP 2003317337A JP 2002126267 A JP2002126267 A JP 2002126267A JP 2002126267 A JP2002126267 A JP 2002126267A JP 2003317337 A JP2003317337 A JP 2003317337A
Authority
JP
Japan
Prior art keywords
magnetic layer
magneto
recording
signal
magnetic
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.)
Withdrawn
Application number
JP2002126267A
Other languages
English (en)
Japanese (ja)
Other versions
JP2003317337A5 (enExample
Inventor
Tsutomu Shiratori
力 白鳥
Katsumi Arisaka
克已 有坂
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP2002126267A priority Critical patent/JP2003317337A/ja
Priority to US10/419,856 priority patent/US6980491B2/en
Publication of JP2003317337A publication Critical patent/JP2003317337A/ja
Publication of JP2003317337A5 publication Critical patent/JP2003317337A5/ja
Withdrawn legal-status Critical Current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
    • G11B11/10595—Control of operating function
    • G11B11/10597—Adaptations for transducing various formats on the same or different carriers
    • 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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10504—Recording
    • G11B11/10508—Recording by modulating only the magnetic field at the transducer
    • 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
JP2002126267A 2002-04-26 2002-04-26 光磁気記録媒体及び記録方法 Withdrawn JP2003317337A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2002126267A JP2003317337A (ja) 2002-04-26 2002-04-26 光磁気記録媒体及び記録方法
US10/419,856 US6980491B2 (en) 2002-04-26 2003-04-22 Domain wall displacement type magneto-optical recording medium and recording method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002126267A JP2003317337A (ja) 2002-04-26 2002-04-26 光磁気記録媒体及び記録方法

Publications (2)

Publication Number Publication Date
JP2003317337A true JP2003317337A (ja) 2003-11-07
JP2003317337A5 JP2003317337A5 (enExample) 2005-09-29

Family

ID=29243799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002126267A Withdrawn JP2003317337A (ja) 2002-04-26 2002-04-26 光磁気記録媒体及び記録方法

Country Status (2)

Country Link
US (1) US6980491B2 (enExample)
JP (1) JP2003317337A (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4095364B2 (ja) * 2002-07-19 2008-06-04 キヤノン株式会社 磁壁移動型光磁気記録媒体の記録再生装置
ATE537006T1 (de) * 2004-06-30 2011-12-15 Dainippon Ink & Chemicals Magnetisches aufzeichnungsmedium und verfahren zur herstellung eines magnetischen aufzeichnungsmediums
JP4773254B2 (ja) * 2006-03-15 2011-09-14 太陽誘電株式会社 高周波磁性薄膜及び高周波電子デバイス
JP5043066B2 (ja) * 2009-05-28 2012-10-10 株式会社日立ハイテクノロジーズ 磁気ヘッドセトリング時間を考慮した最適なシーク時間測定方法およびこの測定方法を使用する検査装置

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2910084B2 (ja) 1989-09-06 1999-06-23 ソニー株式会社 光磁気記録媒体における信号再生方法
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
JP3332458B2 (ja) 1993-04-02 2002-10-07 キヤノン株式会社 光磁気記録媒体
EP0618572B1 (en) 1993-04-02 2002-07-03 Canon Kabushiki Kaisha Magnetooptical recording medium on which high-density information can be recorded and method of reproducing the recorded information
JP3477598B2 (ja) 1996-03-04 2003-12-10 清水建設株式会社 既存建築物の耐震補強構造
JPH1092045A (ja) * 1996-09-18 1998-04-10 Canon Inc 信号再生装置
JPH10228684A (ja) 1996-12-13 1998-08-25 Canon Inc 光磁気記録媒体とその製造方法及びその媒体の再生方法
JPH11134732A (ja) 1997-08-29 1999-05-21 Canon Inc 情報記録再生方法
JP3647219B2 (ja) 1997-09-01 2005-05-11 キヤノン株式会社 磁性記録媒体の信号再生方法
US6572957B1 (en) * 1998-01-30 2003-06-03 Sony Corporation Magneto-optical recording medium with four layered recording layer having specific relative magnetic anisotropy values
JPH11283289A (ja) * 1998-01-30 1999-10-15 Hitachi Maxell Ltd 光磁気記録媒体、その再生方法及び再生装置
JP3380483B2 (ja) * 1998-04-27 2003-02-24 シャープ株式会社 光磁気記録媒体及び再生装置
JP3416548B2 (ja) 1998-10-16 2003-06-16 キヤノン株式会社 磁性記録媒体、再生方法および再生装置
US6519211B1 (en) * 1999-04-01 2003-02-11 Matsushita Electric Industrial Co., Ltd. Magneto-optical recording medium having magnetic domain shrinks and disappears
US7012857B2 (en) * 2000-05-31 2006-03-14 Matsushita Electric Industrial Co., Ltd. Magneto optical recording medium having a multilayer recording film of different thickness
EP1304692A4 (en) * 2000-06-22 2007-11-28 Matsushita Electric Industrial Co Ltd OPTICAL PLATE RECORDING MEDIUM, OPTICAL PLATE DEVICE AND MASTER MANUFACTURING METHOD
JP2002319200A (ja) * 2001-04-19 2002-10-31 Matsushita Electric Ind Co Ltd 光ディスクおよびその製造方法
JP2002319198A (ja) * 2001-04-19 2002-10-31 Matsushita Electric Ind Co Ltd 光磁気記録媒体およびその製造方法と製造装置

Also Published As

Publication number Publication date
US6980491B2 (en) 2005-12-27
US20030203243A1 (en) 2003-10-30

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