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DE69119850D1 - Überschreibbares magnetooptisches Aufzeichnungsmedium das einen grösseren Bereich von Strahlungsstärke auf hohem Niveau zulässt - Google Patents

Überschreibbares magnetooptisches Aufzeichnungsmedium das einen grösseren Bereich von Strahlungsstärke auf hohem Niveau zulässt

Info

Publication number
DE69119850D1
DE69119850D1 DE69119850T DE69119850T DE69119850D1 DE 69119850 D1 DE69119850 D1 DE 69119850D1 DE 69119850 T DE69119850 T DE 69119850T DE 69119850 T DE69119850 T DE 69119850T DE 69119850 D1 DE69119850 D1 DE 69119850D1
Authority
DE
Germany
Prior art keywords
allows
recording medium
high level
optical recording
radiation intensity
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
DE69119850T
Other languages
English (en)
Other versions
DE69119850T2 (de
Inventor
Hiroyuki Matsumoto
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.)
Nikon Corp
Original Assignee
Nikon 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 Nikon Corp filed Critical Nikon Corp
Application granted granted Critical
Publication of DE69119850D1 publication Critical patent/DE69119850D1/de
Publication of DE69119850T2 publication Critical patent/DE69119850T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
DE69119850T 1990-09-13 1991-09-13 Überschreibbares magnetooptisches Aufzeichnungsmedium das einen grösseren Bereich von Strahlungsstärke auf hohem Niveau zulässt Expired - Fee Related DE69119850T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2243339A JP3038853B2 (ja) 1990-09-13 1990-09-13 高レベルのマージンが拡大したオーバーライト可能な光磁気記録媒体

Publications (2)

Publication Number Publication Date
DE69119850D1 true DE69119850D1 (de) 1996-07-04
DE69119850T2 DE69119850T2 (de) 1996-11-14

Family

ID=17102356

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69119850T Expired - Fee Related DE69119850T2 (de) 1990-09-13 1991-09-13 Überschreibbares magnetooptisches Aufzeichnungsmedium das einen grösseren Bereich von Strahlungsstärke auf hohem Niveau zulässt

Country Status (4)

Country Link
US (1) US5309427A (de)
EP (1) EP0475446B1 (de)
JP (1) JP3038853B2 (de)
DE (1) DE69119850T2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2067945C (en) * 1991-05-16 2001-09-04 Shintaro Tanaka Magneto-optical recording medium
JP2603027B2 (ja) * 1992-05-18 1997-04-23 三菱電機株式会社 光磁気記録媒体
US5547751A (en) * 1992-04-10 1996-08-20 Mitsubishi Denki Kabushiki Kaisha Magneto-optical recording medium and method of manufacturing the same
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
US5635267A (en) * 1992-09-17 1997-06-03 Matsushita Electric Industrial Co., Ltd. Optical information recording medium of phase change type having variably grooved tracks depending on their radial locations
JPH06131722A (ja) * 1992-10-16 1994-05-13 Canon Inc 光磁気記録媒体およびその記録方法
JP3230388B2 (ja) * 1994-03-15 2001-11-19 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
JPH07311986A (ja) * 1994-05-18 1995-11-28 Matsushita Electric Ind Co Ltd 光磁気記録媒体
US5463578A (en) * 1994-09-22 1995-10-31 International Business Machines Corporation Magneto-optic memory allowing direct overwrite of data
US5840465A (en) * 1995-07-17 1998-11-24 Taiyo Ink Manufacturing Co., Ltd. Compositions and method for formation of barrier ribs of plasma display panel
JP3049482B2 (ja) * 1995-06-09 2000-06-05 富士通株式会社 光磁気記録媒体及びその再生方法
FR2746206B1 (fr) * 1996-03-15 1998-04-10 Support d'enregistrement magneto-optique et procede de realisation
JP3738523B2 (ja) * 1997-04-09 2006-01-25 株式会社ニコン 記録可能な光ディスク
US6456586B1 (en) * 1998-09-10 2002-09-24 Sharp Kabushiki Kaisha Magneto-optical recording medium and process for producing the same
US6449239B1 (en) * 1998-11-25 2002-09-10 Matsushita Electric Industrial Co., Ltd. Optical information recording medium with thermal diffusion layer

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466035A (en) * 1982-02-25 1984-08-14 Xerox Corporation Magneto-optic media and system optimization
NL8203725A (nl) * 1982-09-27 1984-04-16 Philips Nv Thermo-magneto-optische geheugeninrichting en registratiemedium daarvoor.
JPS59171057A (ja) * 1983-03-18 1984-09-27 Nippon Kogaku Kk <Nikon> 光熱磁気記録媒体
JPS6180640A (ja) * 1984-09-28 1986-04-24 Canon Inc 光学的記録媒体
EP0191226B1 (de) * 1985-02-14 1991-02-27 Kabushiki Kaisha Toshiba Zum Wiederaufzeichnen geeignete magnetooptische Platte
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
KR970002341B1 (ko) * 1987-11-30 1997-03-03 소니 가부시끼가이샤 자기 광 기록 매체의 신호 재생 방법
JP2630976B2 (ja) * 1988-03-19 1997-07-16 富士通株式会社 光磁気記録媒体
JPH01298545A (ja) * 1988-05-26 1989-12-01 Nippon Columbia Co Ltd 円盤型光情報記録媒体及びその製造方法
US5216663A (en) * 1988-08-24 1993-06-01 Mitsubishi Denki Kabushiki Kaisha Magneto-optic recording medium and manufacturing method
KR900008471A (ko) * 1988-11-07 1990-06-04 미다 가쓰시게 광자기 디스크
DE69028092T2 (de) * 1989-11-10 1997-04-03 Mitsubishi Chem Corp Magnetooptisches aufzeichnungsmedium

Also Published As

Publication number Publication date
US5309427A (en) 1994-05-03
JP3038853B2 (ja) 2000-05-08
JPH04123339A (ja) 1992-04-23
EP0475446A2 (de) 1992-03-18
EP0475446A3 (en) 1993-01-13
EP0475446B1 (de) 1996-05-29
DE69119850T2 (de) 1996-11-14

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee