DE69123225D1 - Magnetooptischer Aufzeichnungsträger - Google Patents
Magnetooptischer AufzeichnungsträgerInfo
- Publication number
- DE69123225D1 DE69123225D1 DE69123225T DE69123225T DE69123225D1 DE 69123225 D1 DE69123225 D1 DE 69123225D1 DE 69123225 T DE69123225 T DE 69123225T DE 69123225 T DE69123225 T DE 69123225T DE 69123225 D1 DE69123225 D1 DE 69123225D1
- Authority
- DE
- Germany
- Prior art keywords
- magneto
- recording medium
- optical recording
- optical
- 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.)
- Expired - Fee Related
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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP41166490 | 1990-12-19 | ||
JP3072199A JP2910287B2 (ja) | 1990-12-19 | 1991-03-13 | 光磁気記録媒体 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69123225D1 true DE69123225D1 (de) | 1997-01-02 |
DE69123225T2 DE69123225T2 (de) | 1997-06-12 |
Family
ID=26413328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1991623225 Expired - Fee Related DE69123225T2 (de) | 1990-12-19 | 1991-12-16 | Magnetooptischer Aufzeichnungsträger |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0491337B1 (de) |
JP (1) | JP2910287B2 (de) |
DE (1) | DE69123225T2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5903526A (en) * | 1996-09-20 | 1999-05-11 | Victor Company Of Japan, Ltd. | Magneto-optical recording medium having multiple magnetic layers |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
CA1326547C (en) * | 1988-07-13 | 1994-01-25 | Masahiko Kaneko | Thermomagnetic recording method |
JP2830018B2 (ja) * | 1989-03-01 | 1998-12-02 | 株式会社ニコン | 光磁気記録媒体 |
JPH02265058A (ja) * | 1989-04-06 | 1990-10-29 | Mitsui Petrochem Ind Ltd | 光磁気記録媒体とその初期化方法 |
-
1991
- 1991-03-13 JP JP3072199A patent/JP2910287B2/ja not_active Expired - Fee Related
- 1991-12-16 EP EP91121557A patent/EP0491337B1/de not_active Expired - Lifetime
- 1991-12-16 DE DE1991623225 patent/DE69123225T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH06215426A (ja) | 1994-08-05 |
JP2910287B2 (ja) | 1999-06-23 |
EP0491337A1 (de) | 1992-06-24 |
DE69123225T2 (de) | 1997-06-12 |
EP0491337B1 (de) | 1996-11-20 |
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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 |