DE69938580D1 - Magnetooptischer Aufzeichnungsträger und Herstellungsverfahren - Google Patents

Magnetooptischer Aufzeichnungsträger und Herstellungsverfahren

Info

Publication number
DE69938580D1
DE69938580D1 DE69938580T DE69938580T DE69938580D1 DE 69938580 D1 DE69938580 D1 DE 69938580D1 DE 69938580 T DE69938580 T DE 69938580T DE 69938580 T DE69938580 T DE 69938580T DE 69938580 D1 DE69938580 D1 DE 69938580D1
Authority
DE
Germany
Prior art keywords
magneto
manufacturing
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
DE69938580T
Other languages
English (en)
Other versions
DE69938580T2 (de
Inventor
Ken Tamanoi
Yoshihiro Muto
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.)
Fujitsu Ltd
Sony Corp
Original Assignee
Fujitsu Ltd
Sony 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 Fujitsu Ltd, Sony Corp filed Critical Fujitsu Ltd
Publication of DE69938580D1 publication Critical patent/DE69938580D1/de
Application granted granted Critical
Publication of DE69938580T2 publication Critical patent/DE69938580T2/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
    • 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
    • G11B11/10502—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
    • G11B11/10515—Reproducing
DE69938580T 1998-10-30 1999-10-28 Magnetooptischer Aufzeichnungsträger und Herstellungsverfahren Expired - Lifetime DE69938580T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP31145998 1998-10-30
JP31145998 1998-10-30
JP11297381A JP2000200448A (ja) 1998-10-30 1999-10-19 光磁気記録媒体及び光磁気記録媒体の製造方法
JP29738199 1999-10-19

Publications (2)

Publication Number Publication Date
DE69938580D1 true DE69938580D1 (de) 2008-06-05
DE69938580T2 DE69938580T2 (de) 2009-06-04

Family

ID=26561103

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69938580T Expired - Lifetime DE69938580T2 (de) 1998-10-30 1999-10-28 Magnetooptischer Aufzeichnungsträger und Herstellungsverfahren

Country Status (6)

Country Link
US (1) US6333899B1 (de)
EP (1) EP0997894B1 (de)
JP (1) JP2000200448A (de)
KR (1) KR100634103B1 (de)
CN (1) CN1214380C (de)
DE (1) DE69938580T2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6455174B1 (en) * 1998-11-05 2002-09-24 Hitachi Maxell, Ltd. Magnetic recording medium, recording and reproducing head, and magnetic recording and reproducing method
JP2000173119A (ja) * 1998-12-09 2000-06-23 Sony Corp 光学記録媒体及びその製造方法
US6724943B2 (en) 2000-02-07 2004-04-20 Sony Corporation Device and method for image processing
JP2001331985A (ja) * 2000-05-23 2001-11-30 Fujitsu Ltd 光磁気記録媒体及びその製造方法
US6767656B2 (en) * 2000-10-26 2004-07-27 Fujitsu Limited Magneto-optical recording medium and method of reproducing the same
JP2002157792A (ja) * 2000-11-15 2002-05-31 Canon Inc 光磁気記録媒体及び該媒体のための再生方法、再生装置
WO2002077987A1 (fr) * 2001-03-26 2002-10-03 Hitachi Maxell, Ltd. Support d'enregistrement magneto-optique et procede de reproduction
JP2002352484A (ja) 2001-05-25 2002-12-06 Fujitsu Ltd 光磁気記録媒体
JP2003016704A (ja) 2001-06-29 2003-01-17 Sony Corp 光磁気記録媒体およびその製造方法
CN1291407C (zh) 2001-12-25 2006-12-20 富士通株式会社 磁光记录介质
EP1480210A4 (de) 2002-02-25 2007-12-05 Fujitsu Ltd Magnetooptisches aufzeichnungs medium und aufzeichnungs-/ wiedergabevorrichtung dafür
KR100754166B1 (ko) 2004-05-17 2007-09-03 삼성전자주식회사 초해상 정보 저장매체 및 그 정보 기록 및/또는 재생기기

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5273835A (en) 1989-09-25 1993-12-28 Nikon Corporation Over-write capable magnetooptical recording medium
JP2910250B2 (ja) * 1990-12-27 1999-06-23 ソニー株式会社 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
JPH0668532A (ja) 1992-08-18 1994-03-11 Sony Corp 光磁気記録媒体
JP3088619B2 (ja) * 1994-01-17 2000-09-18 富士通株式会社 光磁気記録媒体及び該媒体に記録された情報の再生方法
JP3164975B2 (ja) 1994-08-24 2001-05-14 キヤノン株式会社 光磁気記録媒体及び該媒体を用いた情報再生方法
JP3445023B2 (ja) * 1995-06-08 2003-09-08 シャープ株式会社 光磁気記録媒体およびその再生方法並びに記録方法
JPH0954993A (ja) * 1995-08-15 1997-02-25 Canon Inc 光磁気記録媒体及び該媒体の情報再生方法
JPH10134429A (ja) * 1996-10-25 1998-05-22 Fujitsu Ltd 光磁気記録媒体及びその再生方法

Also Published As

Publication number Publication date
KR20000029419A (ko) 2000-05-25
EP0997894A1 (de) 2000-05-03
EP0997894B1 (de) 2008-04-23
CN1214380C (zh) 2005-08-10
JP2000200448A (ja) 2000-07-18
KR100634103B1 (ko) 2006-10-17
CN1253357A (zh) 2000-05-17
US6333899B1 (en) 2001-12-25
DE69938580T2 (de) 2009-06-04

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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: SEEGER SEEGER LINDNER PARTNERSCHAFT PATENTANWAELTE