JPH09167388A - 光磁気記録媒体、該媒体を用いた情報記録再生装置及び情報記録再生方法 - Google Patents

光磁気記録媒体、該媒体を用いた情報記録再生装置及び情報記録再生方法

Info

Publication number
JPH09167388A
JPH09167388A JP8268693A JP26869396A JPH09167388A JP H09167388 A JPH09167388 A JP H09167388A JP 8268693 A JP8268693 A JP 8268693A JP 26869396 A JP26869396 A JP 26869396A JP H09167388 A JPH09167388 A JP H09167388A
Authority
JP
Japan
Prior art keywords
layer
magnetic layer
magnetic
magneto
recording 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.)
Pending
Application number
JP8268693A
Other languages
English (en)
Japanese (ja)
Other versions
JPH09167388A5 (enExample
Inventor
Tsutomu Shiratori
力 白鳥
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 JP8268693A priority Critical patent/JPH09167388A/ja
Priority to US08/728,849 priority patent/US5949743A/en
Priority to DE1996631317 priority patent/DE69631317T2/de
Priority to EP96307371A priority patent/EP0768656B1/en
Publication of JPH09167388A publication Critical patent/JPH09167388A/ja
Publication of JPH09167388A5 publication Critical patent/JPH09167388A5/ja
Pending 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
    • 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
    • G11B11/10517—Overwriting or erasing
    • G11B11/10519—Direct overwriting, i.e. performing erasing and recording using the same transducing means
    • G11B11/10521—Direct overwriting, i.e. performing erasing and recording using the same transducing means using a single light spot
    • 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
    • G11B11/10506—Recording by modulating only the light beam of the transducer
JP8268693A 1995-10-11 1996-10-09 光磁気記録媒体、該媒体を用いた情報記録再生装置及び情報記録再生方法 Pending JPH09167388A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8268693A JPH09167388A (ja) 1995-10-11 1996-10-09 光磁気記録媒体、該媒体を用いた情報記録再生装置及び情報記録再生方法
US08/728,849 US5949743A (en) 1995-10-11 1996-10-10 Magnetooptical recording medium having a bias layer related by Curie temperature to a writing layer, which is capable of being overwritten by light modulation
DE1996631317 DE69631317T2 (de) 1995-10-11 1996-10-10 Magneto-optisches Aufzeichnungsmedium und -verfahren sowie Gerät damit
EP96307371A EP0768656B1 (en) 1995-10-11 1996-10-10 Magnetooptical recording medium and recording method and apparatus using the medium

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP26303995 1995-10-11
JP7-263039 1995-10-11
JP8268693A JPH09167388A (ja) 1995-10-11 1996-10-09 光磁気記録媒体、該媒体を用いた情報記録再生装置及び情報記録再生方法

Publications (2)

Publication Number Publication Date
JPH09167388A true JPH09167388A (ja) 1997-06-24
JPH09167388A5 JPH09167388A5 (enExample) 2004-10-14

Family

ID=26545832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8268693A Pending JPH09167388A (ja) 1995-10-11 1996-10-09 光磁気記録媒体、該媒体を用いた情報記録再生装置及び情報記録再生方法

Country Status (4)

Country Link
US (1) US5949743A (enExample)
EP (1) EP0768656B1 (enExample)
JP (1) JPH09167388A (enExample)
DE (1) DE69631317T2 (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10275369A (ja) 1997-01-31 1998-10-13 Canon Inc 情報記録媒体の製造方法および該方法による情報記録媒体
US7145847B2 (en) * 2002-08-28 2006-12-05 Canon Kabushiki Kaisha Annealed optical information recording medium and optical information recording/reproducing apparatus for the same
JP2005025889A (ja) * 2003-07-04 2005-01-27 Canon Inc 光学的記録媒体への情報記録方法
JP2005174518A (ja) * 2003-12-15 2005-06-30 Canon Inc 磁性記録媒体及びその製造方法

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5239524A (en) * 1985-06-11 1993-08-24 Nikon Corporation Over write capable magnetooptical recording method, and magnetooptical recording apparatus and medium used therefor
US5367507A (en) * 1985-06-11 1994-11-22 Nikon Corporation Over write capable magnetooptical recording method, and magnetooptical recording apparatus and medium used therefor
US5475657A (en) * 1985-06-11 1995-12-12 Nikon Corporation Overwrite capable magnetooptial recording apparatus
US5440531A (en) * 1985-06-11 1995-08-08 Nikon Corporation Magneto-optical reproducing method
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
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
EP0838814B1 (en) * 1986-07-08 2002-02-27 Canon Kabushiki Kaisha Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same
JPS6352354A (ja) * 1986-08-20 1988-03-05 Sony Corp 熱磁気記録方法
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
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
JP2762435B2 (ja) * 1987-04-24 1998-06-04 ソニー株式会社 熱磁気記録方法
JP2630976B2 (ja) * 1988-03-19 1997-07-16 富士通株式会社 光磁気記録媒体
WO1990002400A1 (fr) * 1988-08-24 1990-03-08 Mitsubishi Denki Kabushiki Kaisha Support d'enregistrement magneto-optique et procede de production de ce support
US5163031A (en) * 1988-12-07 1992-11-10 Canon Kabushiki Kaisha Method of recording tetra-value signal on magneto-optical recording medium with plural magnetic layers
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
JP2707769B2 (ja) * 1989-11-14 1998-02-04 三菱電機株式会社 光磁気記録媒体及びそれを用いた光磁気記録再生装置
JP3015475B2 (ja) * 1990-01-31 2000-03-06 株式会社東芝 光磁気記録方法及びそれに使用される光磁気記録媒体
JPH04134741A (ja) * 1990-09-27 1992-05-08 Nikon Corp ４層膜構造のオーバーライト可能な光磁気記録媒体
US5418076A (en) * 1990-11-20 1995-05-23 Canon Kabushiki Kaisha Magnetic-optical recording medium
JPH04192138A (ja) * 1990-11-26 1992-07-10 Mitsubishi Electric Corp 光磁気記録媒体
EP0487847A1 (en) * 1990-11-26 1992-06-03 Mitsubishi Denki Kabushiki Kaisha Magnetooptical recording medium

Also Published As

Publication number Publication date
EP0768656A2 (en) 1997-04-16
EP0768656B1 (en) 2004-01-14
US5949743A (en) 1999-09-07
DE69631317T2 (de) 2004-11-18
DE69631317D1 (de) 2004-02-19
EP0768656A3 (en) 1998-05-20

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