DE69421234D1 - Magnetooptisches Aufzeichnungsmedium - Google Patents
Magnetooptisches AufzeichnungsmediumInfo
- Publication number
- DE69421234D1 DE69421234D1 DE69421234T DE69421234T DE69421234D1 DE 69421234 D1 DE69421234 D1 DE 69421234D1 DE 69421234 T DE69421234 T DE 69421234T DE 69421234 T DE69421234 T DE 69421234T DE 69421234 D1 DE69421234 D1 DE 69421234D1
- 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
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
-
- 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
- G11B11/10515—Reproducing
-
- 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
- G11B11/10582—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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93202295 | 1993-08-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69421234D1 true DE69421234D1 (de) | 1999-11-25 |
DE69421234T2 DE69421234T2 (de) | 2000-04-13 |
Family
ID=8214024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69421234T Expired - Fee Related DE69421234T2 (de) | 1993-08-04 | 1994-07-29 | Magnetooptisches Aufzeichnungsmedium |
Country Status (6)
Country | Link |
---|---|
US (1) | US5756202A (de) |
JP (1) | JPH0765419A (de) |
KR (1) | KR100356970B1 (de) |
DE (1) | DE69421234T2 (de) |
SG (1) | SG49286A1 (de) |
TW (1) | TW241359B (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6261681B1 (en) * | 1998-03-20 | 2001-07-17 | Asahi Komag Co., Ltd. | Magnetic recording medium |
US6602612B2 (en) | 1999-06-08 | 2003-08-05 | Fujitsu Limited | Magnetic recording medium and magnetic storage apparatus |
US6689495B1 (en) | 1999-06-08 | 2004-02-10 | Fujitsu Limited | Magnetic recording medium and magnetic storage apparatus |
US6821652B1 (en) | 1999-06-08 | 2004-11-23 | Fujitsu Limited | Magnetic recording medium and magnetic storage apparatus |
US6753101B1 (en) | 1999-06-08 | 2004-06-22 | Fujitsu Limited | Magnetic recording medium, magnetic storage apparatus, recording method and method of producing magnetic recording medium |
US6645646B1 (en) | 1999-06-08 | 2003-11-11 | Fujitsu Limited | Magnetic recording medium and magnetic storage apparatus |
US6280813B1 (en) * | 1999-10-08 | 2001-08-28 | International Business Machines Corporation | Magnetic recording media with antiferromagnetically coupled ferromagnetic films as the recording layer |
US6326637B1 (en) * | 1999-10-18 | 2001-12-04 | International Business Machines Corporation | Antiferromagnetically exchange-coupled structure for magnetic tunnel junction device |
DE60112885T2 (de) | 2000-04-27 | 2006-06-01 | Teijin Ltd. | Verfahren zur kontinuierlichen herstellung von polyester |
US6759149B1 (en) | 2000-07-25 | 2004-07-06 | Seagate Technology Llc | Laminated medium with antiferromagnetic stabilization layers |
US20020192506A1 (en) | 2001-06-04 | 2002-12-19 | International Business Machines Corporation | `Thermal Spring' magnetic recording media for writing using magnetic and thermal gradients |
US6899959B2 (en) | 2002-02-12 | 2005-05-31 | Komag, Inc. | Magnetic media with improved exchange coupling |
CN1666273A (zh) * | 2002-07-05 | 2005-09-07 | 皇家飞利浦电子股份有限公司 | 具有反铁磁耦合畴扩展双层结构的磁光记录介质 |
KR100499136B1 (ko) * | 2002-12-14 | 2005-07-04 | 삼성전자주식회사 | 전자 스핀의존 산란을 이용한 자성매체 및 자성매체정보재생장치 및 재생방법 |
US7488545B2 (en) * | 2006-04-12 | 2009-02-10 | Hitachi Global Storage Technologies Netherlands B.V. | Perpendicular magnetic recording medium with laminated recording layers formed of exchange-coupled ferromagnetic layers |
US9978413B2 (en) | 2006-06-17 | 2018-05-22 | Dieter Suess | Multilayer exchange spring recording media |
TWI382408B (zh) * | 2008-12-22 | 2013-01-11 | Nat Univ Tsing Hua | 垂直記錄媒體 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2077065B (en) * | 1980-02-23 | 1985-01-09 | Sharp Kk | Magnetooptic memory medium |
FR2595983B1 (fr) * | 1986-03-24 | 1989-01-13 | Saint Gobain Vitrage | Procede de fabrication de vitrages feuilletes |
JP2521713B2 (ja) * | 1986-05-21 | 1996-08-07 | 沖電気工業株式会社 | 光磁気記録用媒体 |
DE3866314D1 (de) * | 1987-08-26 | 1992-01-02 | Sony Corp | Magnetooptischer aufzeichnungstraeger. |
EP0530913B1 (de) * | 1991-09-03 | 1997-12-10 | Koninklijke Philips Electronics N.V. | Magnetooptisches Aufzeichnungsmedium |
-
1994
- 1994-04-02 TW TW083102923A patent/TW241359B/zh active
- 1994-07-28 KR KR1019940018402A patent/KR100356970B1/ko not_active IP Right Cessation
- 1994-07-29 DE DE69421234T patent/DE69421234T2/de not_active Expired - Fee Related
- 1994-07-29 SG SG1996008819A patent/SG49286A1/en unknown
- 1994-08-01 JP JP6180155A patent/JPH0765419A/ja active Pending
-
1997
- 1997-03-13 US US08/816,464 patent/US5756202A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5756202A (en) | 1998-05-26 |
TW241359B (de) | 1995-02-21 |
KR950006718A (ko) | 1995-03-21 |
JPH0765419A (ja) | 1995-03-10 |
DE69421234T2 (de) | 2000-04-13 |
SG49286A1 (en) | 1998-05-18 |
KR100356970B1 (ko) | 2003-01-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69226041D1 (de) | Magneto-optisches Aufzeichnungsmedium | |
DE69434923D1 (de) | Aufzeichnungsmedium | |
DE69730080D1 (de) | Magnetooptischer Aufzeichnungsträger | |
DE69417806D1 (de) | Magnetooptischer Aufzeichnungsträger | |
DE69112168D1 (de) | Magnetooptisches Aufzeichnungsmedium. | |
DE69225159D1 (de) | Magnetooptisches Medium | |
DE69323162D1 (de) | Magnetooptischer Aufzeichnungsträger | |
DE69429602D1 (de) | Informationsaufzeichnungsmedium | |
DE69420321D1 (de) | Magnetooptische Mehrschichtaufzeichnungsmedien | |
DE69402216D1 (de) | Magnetisches Aufzeichnungsmedium | |
DE69736040D1 (de) | Magneto-optisches Aufzeichnungsmedium | |
DE69421234D1 (de) | Magnetooptisches Aufzeichnungsmedium | |
DE69423315D1 (de) | Magnetooptisches Aufzeichnungs-/Wiedergabesystem | |
DE69115426D1 (de) | Magneto-optisches Aufzeichnungsmedium | |
DE69115963D1 (de) | Magnetooptisches Aufzeichnungsmedium | |
DE69325352D1 (de) | Magnetooptisches Aufzeichnungsmedium | |
DE69024747D1 (de) | Magnetooptisches Aufzeichnungsmedium | |
DE69222988D1 (de) | Magnetooptisches Aufzeichnungsmedium | |
DE69122977D1 (de) | Magnetooptisches Aufzeichnungsmedium | |
DE69130441D1 (de) | Magnetooptischer Aufzeichnungsträger | |
DE68925393D1 (de) | Magneto-optisches Aufzeichnungsmedium | |
DE69421299D1 (de) | Magneto-optisches Aufzeichnungsmedium | |
DE69422546D1 (de) | Magnetisches Aufzeichnungsmedium | |
DE69423336D1 (de) | Magnetisches Aufzeichnungsmedium | |
DE69322222D1 (de) | Magnetooptischer Aufzeichnungsträger |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |