DE69221659D1 - Überschreibbares, magnetooptisches Aufzeichnungsmedium mit Rille, die eine Tiefe in dem Bereich von 30nm bis 80nm hat - Google Patents

Überschreibbares, magnetooptisches Aufzeichnungsmedium mit Rille, die eine Tiefe in dem Bereich von 30nm bis 80nm hat

Info

Publication number
DE69221659D1
DE69221659D1 DE69221659T DE69221659T DE69221659D1 DE 69221659 D1 DE69221659 D1 DE 69221659D1 DE 69221659 T DE69221659 T DE 69221659T DE 69221659 T DE69221659 T DE 69221659T DE 69221659 D1 DE69221659 D1 DE 69221659D1
Authority
DE
Germany
Prior art keywords
rewritable
magneto
depth
groove
range
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
DE69221659T
Other languages
English (en)
Other versions
DE69221659T2 (de
Inventor
Tetsuo Hosokawa
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 DE69221659D1 publication Critical patent/DE69221659D1/de
Publication of DE69221659T2 publication Critical patent/DE69221659T2/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
    • 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
DE69221659T 1991-04-10 1992-04-07 Überschreibbares, magnetooptisches Aufzeichnungsmedium mit Rille, die eine Tiefe in dem Bereich von 30nm bis 80nm hat Expired - Fee Related DE69221659T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3077487A JP3006124B2 (ja) 1991-04-10 1991-04-10 オーバーライト可能な光磁気記録媒体及びその記録再生装置

Publications (2)

Publication Number Publication Date
DE69221659D1 true DE69221659D1 (de) 1997-09-25
DE69221659T2 DE69221659T2 (de) 1998-01-02

Family

ID=13635345

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69221659T Expired - Fee Related DE69221659T2 (de) 1991-04-10 1992-04-07 Überschreibbares, magnetooptisches Aufzeichnungsmedium mit Rille, die eine Tiefe in dem Bereich von 30nm bis 80nm hat

Country Status (4)

Country Link
US (1) US5191564A (de)
EP (1) EP0508376B1 (de)
JP (1) JP3006124B2 (de)
DE (1) DE69221659T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5361248A (en) * 1992-06-01 1994-11-01 Eastman Kodak Company Direct overwrite magneto-optical storage medium not requiring an initialization magnet
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
JP2865159B2 (ja) * 1995-06-29 1999-03-08 日本電気株式会社 光磁気記録媒体とその再生方法
JP2000011460A (ja) * 1998-06-22 2000-01-14 Pioneer Electron Corp 光ディスク
WO2002029789A1 (fr) * 2000-10-03 2002-04-11 Matsushita Electric Industrial Co., Ltd. Disque optique multicouche et procede de production d'un disque optique multicouche
JP2002319119A (ja) * 2001-04-23 2002-10-31 Fuji Electric Co Ltd 垂直磁気記録媒体用基板、該基板を用いた垂直磁気記録媒体、およびそれらの製造方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004420A1 (en) * 1983-04-28 1984-11-08 Comtech Res Unit Data storage and recording
US4544443A (en) * 1983-05-13 1985-10-01 Shap Kabushiki Kaisha Method for manufacturing an optical memory element
US5100741A (en) * 1984-09-12 1992-03-31 Seiko Epson Corporation Magneto-optic recording systems
US4801499A (en) * 1985-01-24 1989-01-31 Seiko Epson Corporation Optical recording medium
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
US4800112A (en) * 1986-04-10 1989-01-24 Seiko Epson Corporation Optical recording medium
JP2754537B2 (ja) * 1987-05-18 1998-05-20 株式会社ニコン 光磁気記録媒体並びにそれを使用したビット形成方法
JP2671127B2 (ja) * 1988-01-18 1997-10-29 富士写真フイルム株式会社 光情報記録方法と情報記録媒体
JP2630976B2 (ja) * 1988-03-19 1997-07-16 富士通株式会社 光磁気記録媒体
JPH01273248A (ja) * 1988-04-25 1989-11-01 Nikon Corp 磁性層間の交換結合力が制御されたオーバーライト可能な光磁気記録媒体
WO1990002400A1 (en) * 1988-08-24 1990-03-08 Mitsubishi Denki Kabushiki Kaisha Magnetooptical recording medium and method of producing the same
US5175714A (en) * 1988-09-30 1992-12-29 Kabushiki Kaisha Toshiba Method of magneto-optically recording/erasing information and magneto-optical information storage medium including recording and bias layers satisfying certain conditions
JPH02158939A (ja) * 1988-12-12 1990-06-19 Nikon Corp オーバーライト可能な光磁気記録媒体

Also Published As

Publication number Publication date
EP0508376B1 (de) 1997-08-20
JPH04311840A (ja) 1992-11-04
DE69221659T2 (de) 1998-01-02
JP3006124B2 (ja) 2000-02-07
EP0508376A1 (de) 1992-10-14
US5191564A (en) 1993-03-02

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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