ATE141437T1 - Magnetooptisches aufzeichnungsmedium - Google Patents

Magnetooptisches aufzeichnungsmedium

Info

Publication number
ATE141437T1
ATE141437T1 AT92102014T AT92102014T ATE141437T1 AT E141437 T1 ATE141437 T1 AT E141437T1 AT 92102014 T AT92102014 T AT 92102014T AT 92102014 T AT92102014 T AT 92102014T AT E141437 T1 ATE141437 T1 AT E141437T1
Authority
AT
Austria
Prior art keywords
emu
magnetoptical
recording medium
koe
coercive force
Prior art date
Application number
AT92102014T
Other languages
English (en)
Inventor
Masumi Ohta
Isamu Nakao
Katsuhisa Aratani
Original Assignee
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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of ATE141437T1 publication Critical patent/ATE141437T1/de

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
    • 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

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Thin Magnetic Films (AREA)
AT92102014T 1991-02-08 1992-02-06 Magnetooptisches aufzeichnungsmedium ATE141437T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP03018077A JP3111479B2 (ja) 1991-02-08 1991-02-08 光磁気記録媒体

Publications (1)

Publication Number Publication Date
ATE141437T1 true ATE141437T1 (de) 1996-08-15

Family

ID=11961592

Family Applications (1)

Application Number Title Priority Date Filing Date
AT92102014T ATE141437T1 (de) 1991-02-08 1992-02-06 Magnetooptisches aufzeichnungsmedium

Country Status (7)

Country Link
US (1) US5265074A (de)
EP (1) EP0498435B1 (de)
JP (1) JP3111479B2 (de)
KR (1) KR100214038B1 (de)
AT (1) ATE141437T1 (de)
CA (1) CA2060548C (de)
DE (1) DE69212656T2 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06236587A (ja) * 1992-05-19 1994-08-23 Nikon Corp 再生専用型の光磁気ディスク、その再生方法 及び再生装置
JPH0668532A (ja) * 1992-08-18 1994-03-11 Sony Corp 光磁気記録媒体
JPH06103622A (ja) * 1992-09-18 1994-04-15 Nikon Corp Ｒ層を有するオーバーライト可能な光磁気記録媒体
JP3092363B2 (ja) 1992-12-01 2000-09-25 松下電器産業株式会社 光磁気記録媒体
JP2999895B2 (ja) * 1992-12-10 2000-01-17 シャープ株式会社 光磁気記録媒体
JP2546477B2 (ja) * 1992-12-21 1996-10-23 日本電気株式会社 光磁気記録媒体とその記録再生方法及び記録再生装置
JP2809991B2 (ja) 1994-01-14 1998-10-15 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
JPH07230637A (ja) * 1994-02-18 1995-08-29 Canon Inc 光磁気記録媒体および該媒体を用いた情報記録再生方法
CA2142767C (en) * 1994-02-21 1998-11-17 Naoki Nishimura Magneto-optical recording medium, and information reproducing method using the medium
KR960002213A (ko) * 1994-06-03 1996-01-26 이헌조 광자기 기록 매체
US5593790A (en) * 1994-12-29 1997-01-14 Imation Corp. Interference super-resolution using two magnetic layer construction
JP3359804B2 (ja) * 1996-01-22 2002-12-24 シャープ株式会社 光磁気記録媒体及びそれを用いた光磁気記録方法
DE19642770A1 (de) 1996-10-16 1998-04-23 Basf Ag Verfahren zur Herstellung von Wasserstoffperoxid
WO2000013177A1 (fr) * 1998-08-31 2000-03-09 Sanyo Electric Co., Ltd. Support d'enregistrement magneto-optique
JP2000200448A (ja) 1998-10-30 2000-07-18 Fujitsu Ltd 光磁気記録媒体及び光磁気記録媒体の製造方法
US6455174B1 (en) * 1998-11-05 2002-09-24 Hitachi Maxell, Ltd. Magnetic recording medium, recording and reproducing head, and magnetic recording and reproducing method
US20030179657A1 (en) * 2000-04-19 2003-09-25 Hitoshi Noguchi Magneto-optical disk device capable of performing magnetic domain expansion reproduction by dc magnetic field and reproducing method
US20020192506A1 (en) 2001-06-04 2002-12-19 International Business Machines Corporation `Thermal Spring' magnetic recording media for writing using magnetic and thermal gradients

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2110459B (en) * 1982-11-08 1985-08-14 Kokusai Denshin Denwa Co Ltd Magneto-optical recording system
JPS62137754A (ja) * 1985-12-09 1987-06-20 Canon Inc 光磁気再生方法
ATE172047T1 (de) * 1986-07-08 1998-10-15 Canon Kk Magnetoptisches aufzeichnungsmedium mit der möglichkeit des überschreibens mit zwei oder mehr magnetschichten und dieses medium verwendende aufzeichnungsmethode
US5051970A (en) * 1987-05-08 1991-09-24 Nippon Telegraph And Telephone Corporation Magneto-optic recording system with overwrite capability
US4995024A (en) * 1987-10-30 1991-02-19 Kyocera Corporation Magneto-optical recording element
EP0318925B1 (de) * 1987-11-30 1994-04-20 Sony Corporation Methode zum optischen Abtasten eines Signals aus einem magneto-optischen Speichermedium
NL8801327A (nl) * 1988-05-24 1989-12-18 Philips Nv Methode voor het optisch aftasten van een informatievlak en optische registratiedragers en aftastinrichtingen geschikt voor toepassing van de methode.
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
JP2910250B2 (ja) * 1990-12-27 1999-06-23 ソニー株式会社 光磁気記録媒体
JP2672895B2 (ja) * 1991-01-16 1997-11-05 三菱電機株式会社 光磁気記録媒体

Also Published As

Publication number Publication date
JPH04255942A (ja) 1992-09-10
KR920017048A (ko) 1992-09-26
KR100214038B1 (ko) 1999-08-02
US5265074A (en) 1993-11-23
CA2060548C (en) 2001-07-03
DE69212656D1 (de) 1996-09-19
EP0498435B1 (de) 1996-08-14
DE69212656T2 (de) 1997-03-20
EP0498435A3 (en) 1992-12-09
JP3111479B2 (ja) 2000-11-20
EP0498435A2 (de) 1992-08-12
CA2060548A1 (en) 1992-08-09

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