DE68927725T2 - Methode zur thermomagnetischen Aufzeichnung - Google Patents
Methode zur thermomagnetischen AufzeichnungInfo
- Publication number
- DE68927725T2 DE68927725T2 DE68927725T DE68927725T DE68927725T2 DE 68927725 T2 DE68927725 T2 DE 68927725T2 DE 68927725 T DE68927725 T DE 68927725T DE 68927725 T DE68927725 T DE 68927725T DE 68927725 T2 DE68927725 T2 DE 68927725T2
- Authority
- DE
- Germany
- Prior art keywords
- thin film
- magnetic
- magnetic thin
- temperature
- 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
- G11B11/03—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 deforming with non-mechanical means, e.g. laser, beam of particles
-
- 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
- G11B11/10504—Recording
- G11B11/10506—Recording by modulating only the light beam of the transducer
-
- 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
- G11B11/10517—Overwriting or erasing
- G11B11/10519—Direct overwriting, i.e. performing erasing and recording using the same transducing means
-
- 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
- G11B11/10517—Overwriting or erasing
- G11B11/10519—Direct overwriting, i.e. performing erasing and recording using the same transducing means
- G11B11/10521—Direct overwriting, i.e. performing erasing and recording using the same transducing means using a single light spot
-
- 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
- G11B11/10523—Initialising
-
- 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
- G11B11/10528—Shaping of magnetic domains, e.g. form, dimensions
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63174695A JP2829970B2 (ja) | 1988-07-13 | 1988-07-13 | 熱磁気記録媒体 |
JP63272400A JP2805070B2 (ja) | 1988-10-28 | 1988-10-28 | 熱磁気記録方法 |
JP1006453A JP2797360B2 (ja) | 1989-01-13 | 1989-01-13 | 光磁気記録方法 |
JP1006454A JP2805787B2 (ja) | 1989-01-13 | 1989-01-13 | 光磁気記録方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68927725D1 DE68927725D1 (de) | 1997-03-13 |
DE68927725T2 true DE68927725T2 (de) | 1997-08-14 |
Family
ID=27454492
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68927725T Expired - Fee Related DE68927725T2 (de) | 1988-07-13 | 1989-07-12 | Methode zur thermomagnetischen Aufzeichnung |
DE68929136T Expired - Fee Related DE68929136T2 (de) | 1988-07-13 | 1989-07-12 | Methode zur thermomagnetischen Aufzeichnung |
DE68929469T Expired - Fee Related DE68929469T2 (de) | 1988-07-13 | 1989-07-12 | Verfahren zur thermomagnetischen Aufzeichnung |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68929136T Expired - Fee Related DE68929136T2 (de) | 1988-07-13 | 1989-07-12 | Methode zur thermomagnetischen Aufzeichnung |
DE68929469T Expired - Fee Related DE68929469T2 (de) | 1988-07-13 | 1989-07-12 | Verfahren zur thermomagnetischen Aufzeichnung |
Country Status (7)
Country | Link |
---|---|
US (1) | US5379275A (de) |
EP (3) | EP0901121B1 (de) |
KR (1) | KR900002264A (de) |
AT (3) | ATE188801T1 (de) |
AU (1) | AU626073B2 (de) |
CA (1) | CA1326547C (de) |
DE (3) | DE68927725T2 (de) |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0382859B1 (de) * | 1988-08-24 | 1998-11-04 | Mitsubishi Denki Kabushiki Kaisha | Magnetooptisches speichermedium |
US5512366A (en) * | 1989-11-14 | 1996-04-30 | Mitsubishi Denki Kabushiki Kaisha | Magneto-optic recording medium and apparatus |
JP2503708B2 (ja) * | 1989-11-14 | 1996-06-05 | 三菱電機株式会社 | 光磁気記録媒体及び装置 |
US5273835A (en) * | 1989-09-25 | 1993-12-28 | Nikon Corporation | Over-write capable magnetooptical recording medium |
US5258237A (en) * | 1989-11-14 | 1993-11-02 | Mitsubishi Denki Kabushiki Kaisha | Magneto-optic recording medium |
JPH03156752A (ja) * | 1989-11-14 | 1991-07-04 | Mitsubishi Electric Corp | 光磁気記録媒体 |
US5191561A (en) * | 1990-11-26 | 1993-03-02 | Mitsubishi Denki Kabushiki Kaisha | Magnetooptical recording medium including five magnetic layers for direct overriding by light intensity modulation without an external bias field |
JP2910287B2 (ja) * | 1990-12-19 | 1999-06-23 | ソニー株式会社 | 光磁気記録媒体 |
JP2839783B2 (ja) * | 1991-04-17 | 1998-12-16 | シャープ株式会社 | 光磁気記録媒体、再生装置及び再生方法 |
CA2067945C (en) * | 1991-05-16 | 2001-09-04 | Shintaro Tanaka | Magneto-optical recording medium |
JP2812817B2 (ja) * | 1991-07-08 | 1998-10-22 | シャープ株式会社 | 光磁気記録媒体 |
JP2763419B2 (ja) * | 1991-07-08 | 1998-06-11 | シャープ株式会社 | 光磁気記録媒体 |
EP0523944A3 (en) * | 1991-07-16 | 1994-02-16 | Canon Kk | Magneto optical recording medium and method |
US5498485A (en) * | 1992-01-21 | 1996-03-12 | Sharp Kabushiki Kaisha | Magneto-optical recording medium and manufacturing method thereof |
JPH05198028A (ja) * | 1992-01-21 | 1993-08-06 | Sharp Corp | 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 |
USRE38501E1 (en) * | 1992-08-28 | 2004-04-20 | Canon Kabushiki Kaisha | Magnetooptical recording medium and information recording and reproducing methods using the recording medium |
EP0586175B1 (de) * | 1992-08-28 | 2002-05-15 | Canon Kabushiki Kaisha | Magnetooptisches Aufzeichnungsmedium und Informationsaufzeichungs- und Wiedergabeverfahren damit |
JP2986622B2 (ja) * | 1992-09-02 | 1999-12-06 | シャープ株式会社 | 光磁気メモリー素子およびその記録再生方法 |
JP2938284B2 (ja) * | 1992-10-06 | 1999-08-23 | シャープ株式会社 | 光磁気記録媒体及びこれを用いた記録再生方法 |
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 |
US6665235B2 (en) | 1992-11-06 | 2003-12-16 | Sharp Kabushiki Kaisha | Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium |
DE69331926T2 (de) * | 1992-11-06 | 2002-11-28 | Sharp Kk | Magnetooptischer Aufzeichungsträger, Aufzeichnungs- und Wiedergabemethode sowie für diesen magnetooptischen Aufzeichnungsträger entworfener optischer Abtastkopf |
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 |
US5662988A (en) * | 1993-01-22 | 1997-09-02 | Sharp Kabushiki Kaisha | Magneto-optical recording medium |
JP2954440B2 (ja) * | 1993-01-22 | 1999-09-27 | シャープ株式会社 | 光磁気記録媒体および光磁気記録方法 |
JPH06251443A (ja) * | 1993-02-25 | 1994-09-09 | Sharp Corp | 光磁気記録媒体 |
US5719829A (en) * | 1993-03-04 | 1998-02-17 | Canon Kabushiki Kaisha | Magnetooptical recording medium allowing super-resolution, and information reproduction method using the medium |
JP3297513B2 (ja) * | 1993-03-04 | 2002-07-02 | 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 |
EP1020854A3 (de) * | 1993-04-02 | 2000-12-20 | Canon Kabushiki Kaisha | Magneto-optisches Wiedergabegerät |
US5596555A (en) * | 1993-07-29 | 1997-01-21 | Canon Kabushiki Kaisha | Magnetooptical recording medium having magnetic layers that satisfy predetermined coercive force relationships, and recording/reproduction method for the medium |
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 |
CA2142767C (en) * | 1994-02-21 | 1998-11-17 | Naoki Nishimura | Magneto-optical recording medium, and information reproducing method using the medium |
JPH07244876A (ja) * | 1994-03-01 | 1995-09-19 | Sharp Corp | 光磁気記録媒体及び光磁気記録再生方法 |
JP3354726B2 (ja) * | 1994-09-27 | 2002-12-09 | 松下電器産業株式会社 | 光磁気記録媒体及び再生方法 |
JPH09120595A (ja) * | 1995-10-23 | 1997-05-06 | Sharp Corp | 光磁気記録媒体 |
JP3400251B2 (ja) * | 1996-07-30 | 2003-04-28 | シャープ株式会社 | 光磁気記録媒体の再生方法及び光磁気記録媒体 |
US5903526A (en) * | 1996-09-20 | 1999-05-11 | Victor Company Of Japan, Ltd. | Magneto-optical recording medium having multiple magnetic layers |
JP3245704B2 (ja) * | 1996-10-18 | 2002-01-15 | 富士通株式会社 | 光磁気記録媒体及びその製造方法 |
JP4350312B2 (ja) * | 2001-01-12 | 2009-10-21 | キヤノン株式会社 | 磁壁移動型光磁気記録媒体および情報再生方法 |
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 (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6066349A (ja) * | 1983-09-22 | 1985-04-16 | Agency Of Ind Science & Technol | 光熱磁気記録媒体およびその製造方法 |
US4794560A (en) * | 1985-09-30 | 1988-12-27 | International Business Machines Corporation | Eraseable self biasing thermal magneto-optic medium |
JPH0695404B2 (ja) * | 1985-12-27 | 1994-11-24 | ソニー株式会社 | 光磁気記録方法 |
JPS63316343A (ja) * | 1987-06-18 | 1988-12-23 | Canon Inc | 光磁気記録媒体 |
DE3752222T2 (de) * | 1986-07-08 | 1999-03-25 | Canon Kk | Magnetoptisches Aufzeichnungsmedium mit der Möglichkeit des Überschreibens mit zwei oder mehr Magnetschichten und dieses Medium verwendende Aufzeichnungsmethode |
JPS6352355A (ja) * | 1986-08-20 | 1988-03-05 | Sony Corp | 熱磁気記録方法 |
JPS6352354A (ja) * | 1986-08-20 | 1988-03-05 | Sony Corp | 熱磁気記録方法 |
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 |
JPH0782674B2 (ja) * | 1986-11-06 | 1995-09-06 | キヤノン株式会社 | 光磁気メモリ用媒体 |
JPS63249951A (ja) * | 1987-04-03 | 1988-10-17 | Mitsubishi Electric Corp | 光磁気記録情報担体 |
AU600576B2 (en) * | 1987-04-24 | 1990-08-16 | Sony Corporation | Thermomagnetic recording method applying power modulated laser on a magnetically coupled multi-layer structure of perpendicular anisotropy magnetic film |
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 |
JPS63304448A (ja) * | 1987-06-04 | 1988-12-12 | Nippon Telegr & Teleph Corp <Ntt> | 光磁気記録媒体 |
-
1989
- 1989-07-07 CA CA000605018A patent/CA1326547C/en not_active Expired - Fee Related
- 1989-07-10 AU AU37956/89A patent/AU626073B2/en not_active Ceased
- 1989-07-12 DE DE68927725T patent/DE68927725T2/de not_active Expired - Fee Related
- 1989-07-12 KR KR1019890009895A patent/KR900002264A/ko not_active Application Discontinuation
- 1989-07-12 AT AT96107608T patent/ATE188801T1/de not_active IP Right Cessation
- 1989-07-12 AT AT98122628T patent/ATE241198T1/de not_active IP Right Cessation
- 1989-07-12 DE DE68929136T patent/DE68929136T2/de not_active Expired - Fee Related
- 1989-07-12 DE DE68929469T patent/DE68929469T2/de not_active Expired - Fee Related
- 1989-07-12 EP EP98122628A patent/EP0901121B1/de not_active Expired - Lifetime
- 1989-07-12 EP EP89112754A patent/EP0352548B1/de not_active Expired - Lifetime
- 1989-07-12 EP EP96107608A patent/EP0735531B1/de not_active Expired - Lifetime
- 1989-07-12 AT AT89112754T patent/ATE148577T1/de not_active IP Right Cessation
-
1993
- 1993-10-05 US US08/131,854 patent/US5379275A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE68929136T2 (de) | 2000-06-21 |
CA1326547C (en) | 1994-01-25 |
AU626073B2 (en) | 1992-07-23 |
EP0901121B1 (de) | 2003-05-21 |
EP0901121A2 (de) | 1999-03-10 |
ATE241198T1 (de) | 2003-06-15 |
ATE188801T1 (de) | 2000-01-15 |
AU3795689A (en) | 1990-01-18 |
EP0352548A3 (de) | 1992-09-02 |
DE68929136D1 (de) | 2000-02-17 |
US5379275A (en) | 1995-01-03 |
EP0735531B1 (de) | 2000-01-12 |
KR900002264A (ko) | 1990-02-28 |
EP0352548B1 (de) | 1997-01-29 |
DE68927725D1 (de) | 1997-03-13 |
EP0901121A3 (de) | 2000-12-06 |
EP0352548A2 (de) | 1990-01-31 |
EP0735531A1 (de) | 1996-10-02 |
DE68929469D1 (de) | 2003-06-26 |
DE68929469T2 (de) | 2004-03-18 |
ATE148577T1 (de) | 1997-02-15 |
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