DE69505687D1 - Magnetooptisches aufzeichnungsmedium mit magnetooptischen filmschichten, die getrennt sind durch yttrium oxyd - Google Patents
Magnetooptisches aufzeichnungsmedium mit magnetooptischen filmschichten, die getrennt sind durch yttrium oxydInfo
- Publication number
- DE69505687D1 DE69505687D1 DE69505687T DE69505687T DE69505687D1 DE 69505687 D1 DE69505687 D1 DE 69505687D1 DE 69505687 T DE69505687 T DE 69505687T DE 69505687 T DE69505687 T DE 69505687T DE 69505687 D1 DE69505687 D1 DE 69505687D1
- Authority
- DE
- Germany
- Prior art keywords
- magnetooptic
- oxyd
- yttrium
- recording medium
- film layers
- 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
-
- 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 (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/313,335 US5648163A (en) | 1994-09-27 | 1994-09-27 | Magneto-optic recording medium having magneto-optic film layers separated by yttrium oxide |
PCT/US1995/009036 WO1996010251A1 (en) | 1994-09-27 | 1995-07-18 | Magneto-optic recording medium having magneto-optic film layers separated by yttrium oxide |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69505687D1 true DE69505687D1 (de) | 1998-12-03 |
DE69505687T2 DE69505687T2 (de) | 1999-03-18 |
Family
ID=23215319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69505687T Expired - Fee Related DE69505687T2 (de) | 1994-09-27 | 1995-07-18 | Magnetooptisches aufzeichnungsmedium mit magnetooptischen filmschichten, die getrennt sind durch yttrium oxyd |
Country Status (7)
Country | Link |
---|---|
US (1) | US5648163A (de) |
EP (1) | EP0783749B1 (de) |
JP (1) | JPH10501090A (de) |
KR (1) | KR970706570A (de) |
CN (1) | CN1158667A (de) |
DE (1) | DE69505687T2 (de) |
WO (1) | WO1996010251A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5644555A (en) * | 1995-01-19 | 1997-07-01 | International Business Machines Corporation | Multiple data surface magneto-optical data storage system |
US6421303B1 (en) * | 1997-11-14 | 2002-07-16 | Fujitsu Limited | Multilayer resonance device and magneto-optical recording medium with magnetic center layer of a different thickness than that of the components of the reflecting layers, and method of reproducing the same |
JP2006146994A (ja) * | 2004-11-16 | 2006-06-08 | Gunma Univ | 磁性多層膜及びこれを用いた光磁気記録媒体 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2560419B1 (fr) * | 1984-02-29 | 1986-06-13 | Bull Sa | Milieu d'enregistrement magneto-optique |
EP0180459B1 (de) * | 1984-10-30 | 1991-12-18 | Brother Kogyo Kabushiki Kaisha | Magnetooptisches Speichermedium und Gerät zum Schreiben auf und Lesen von dem Medium |
US4794053A (en) * | 1985-07-01 | 1988-12-27 | Raytheon Company | Optical elements having buried layers |
DE3677078D1 (de) * | 1985-07-10 | 1991-02-28 | Mitsubishi Chem Ind | Magnetooptischer traeger. |
EP0239974B1 (de) * | 1986-03-29 | 1991-10-09 | Nec Home Electronics Ltd. | Magneto-optisches Aufzeichnungsmedium |
JPS62264463A (ja) * | 1986-05-12 | 1987-11-17 | Fuji Photo Film Co Ltd | 光磁気記録媒体 |
US4849304A (en) * | 1986-12-17 | 1989-07-18 | Tdk Corporation | Optical recording medium |
US4861656A (en) * | 1986-12-24 | 1989-08-29 | Tdk Corporation | Optical recording medium |
JPS6450258A (en) * | 1987-08-21 | 1989-02-27 | Sumitomo Metal Mining Co | Production of thin film of high-refractive index dielectric material |
KR910006659B1 (ko) * | 1987-10-29 | 1991-08-30 | 미쓰이 세끼유 가가꾸 고오교오 가부시끼가이샤 | 자기광학 기록매체 |
JPH01173457A (ja) * | 1987-12-28 | 1989-07-10 | Nec Home Electron Ltd | 光磁気記録媒体 |
US5087532A (en) * | 1989-08-01 | 1992-02-11 | Minnesota Mining And Manufacturing Company | Direct-overwrite magneto-optic media |
CA2036890C (en) * | 1990-02-28 | 1996-02-13 | Hiroyuki Katayama | Magneto-optic recording disk and method of reproducing recorded signals |
EP0448919B1 (de) * | 1990-03-26 | 1996-02-14 | International Business Machines Corporation | Datenträger |
JPH1173457A (ja) * | 1997-08-29 | 1999-03-16 | Fujitsu F I P Kk | 顧客管理システムおよび記録媒体 |
-
1994
- 1994-09-27 US US08/313,335 patent/US5648163A/en not_active Expired - Fee Related
-
1995
- 1995-07-18 DE DE69505687T patent/DE69505687T2/de not_active Expired - Fee Related
- 1995-07-18 WO PCT/US1995/009036 patent/WO1996010251A1/en not_active Application Discontinuation
- 1995-07-18 CN CN95195317A patent/CN1158667A/zh active Pending
- 1995-07-18 JP JP8511719A patent/JPH10501090A/ja not_active Ceased
- 1995-07-18 EP EP95927245A patent/EP0783749B1/de not_active Expired - Lifetime
- 1995-07-18 KR KR1019970701968A patent/KR970706570A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
CN1158667A (zh) | 1997-09-03 |
WO1996010251A1 (en) | 1996-04-04 |
KR970706570A (ko) | 1997-11-03 |
JPH10501090A (ja) | 1998-01-27 |
EP0783749B1 (de) | 1998-10-28 |
DE69505687T2 (de) | 1999-03-18 |
EP0783749A1 (de) | 1997-07-16 |
US5648163A (en) | 1997-07-15 |
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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 |