CN1248198C - 磁性记录介质和用于该介质的磁性记录介质驱动器 - Google Patents
磁性记录介质和用于该介质的磁性记录介质驱动器 Download PDFInfo
- Publication number
- CN1248198C CN1248198C CNB998169226A CN99816922A CN1248198C CN 1248198 C CN1248198 C CN 1248198C CN B998169226 A CNB998169226 A CN B998169226A CN 99816922 A CN99816922 A CN 99816922A CN 1248198 C CN1248198 C CN 1248198C
- Authority
- CN
- China
- Prior art keywords
- magnetic recording
- recording medium
- temperature
- rare earth
- ferrite magnet
- 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
Images
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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70605—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys
- G11B5/70621—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys containing Co metal or alloys
-
- 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
-
- 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
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
-
- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
- G11B5/5565—Track change, selection or acquisition by displacement of the head across disk tracks system adaptation for compensation of variations of physical parameters, e.g. temperature
-
- 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
- G11B2005/0002—Special dispositions or recording techniques
-
- 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
- G11B2005/0002—Special dispositions or recording techniques
- G11B2005/0026—Pulse recording
- G11B2005/0029—Pulse recording using magnetisation components of the recording layer disposed mainly perpendicularly to the record carrier surface
Landscapes
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Magnetic Record Carriers (AREA)
- Thin Magnetic Films (AREA)
Abstract
Description
Claims (6)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP1999/005375 WO2001026100A1 (fr) | 1999-09-30 | 1999-09-30 | Support d'enregistrement magnetique et unite pour ce support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1367921A CN1367921A (zh) | 2002-09-04 |
| CN1248198C true CN1248198C (zh) | 2006-03-29 |
Family
ID=14236860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB998169226A Expired - Fee Related CN1248198C (zh) | 1999-09-30 | 1999-09-30 | 磁性记录介质和用于该介质的磁性记录介质驱动器 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6720075B2 (zh) |
| EP (1) | EP1246169B1 (zh) |
| KR (1) | KR100702020B1 (zh) |
| CN (1) | CN1248198C (zh) |
| DE (1) | DE69936271T2 (zh) |
| WO (1) | WO2001026100A1 (zh) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7041597B2 (ja) * | 2018-06-29 | 2022-03-24 | 昭和電工株式会社 | 熱アシスト磁気記録媒体および磁気記憶装置 |
| KR102718905B1 (ko) * | 2023-08-30 | 2024-10-17 | 한국전력공사 | 중성점 접지저항기의 냉각장치 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH061564B2 (ja) * | 1984-02-22 | 1994-01-05 | 株式会社ニコン | 光磁気記録媒体 |
| EP0184034B1 (en) * | 1984-11-12 | 1991-01-16 | Sumitomo Special Metals Co., Ltd. | Perpendicular magnetic recording medium and method of producing same |
| JPS63282921A (ja) * | 1987-05-15 | 1988-11-18 | Fuji Photo Film Co Ltd | 磁気記録媒体の製造方法 |
| 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 |
| US5147732A (en) * | 1988-09-28 | 1992-09-15 | Hitachi, Ltd. | Longitudinal magnetic recording media and magnetic memory units |
| JPH02227814A (ja) * | 1989-02-28 | 1990-09-11 | Mitsubishi Electric Corp | 垂直磁気記録媒体及びその製造方法 |
| WO1992002931A1 (en) * | 1990-08-10 | 1992-02-20 | Minnesota Mining And Manufacturing Company | Thermomagnetic recording system having high storage density and direct-overwrite capability |
| DE69128504T2 (de) * | 1990-08-11 | 1998-07-02 | Sharp Kk | Verfahren und System zur Wiedergabe von Information auf einem magnetischen Aufzeichnungsträger |
| JP2617025B2 (ja) * | 1990-08-11 | 1997-06-04 | シャープ株式会社 | 磁気記録媒体とその記録再生方法 |
| US5344706A (en) * | 1991-10-01 | 1994-09-06 | Carnegie Mellon University | Magnetic recording medium comprising an underlayer and a cobalt samarium amorphous magnetic layer having a SmCo5 crystalline interface with the underlayer |
| JPH09231543A (ja) * | 1996-02-26 | 1997-09-05 | Hitachi Ltd | 磁気記録媒体及びそれを用いた磁気記憶装置 |
| JPH10135039A (ja) * | 1996-11-05 | 1998-05-22 | Hitachi Ltd | 磁気記録媒体及び磁気記憶装置 |
| JP3429972B2 (ja) * | 1997-03-28 | 2003-07-28 | 株式会社日立製作所 | 磁気記録媒体およびそれを用いた磁気記憶装置 |
| US6403203B2 (en) * | 1997-05-29 | 2002-06-11 | Hitachi, Ltd. | Magnetic recording medium and magnetic recording apparatus using the same |
| US6183893B1 (en) * | 1998-04-06 | 2001-02-06 | Hitachi, Ltd. | Perpendicular magnetic recording medium and magnetic storage apparatus using the same |
| US6500530B1 (en) * | 1998-10-06 | 2002-12-31 | Sharp Kabushiki Kaisha | Magnetic recording medium |
| JP4097814B2 (ja) * | 1998-11-16 | 2008-06-11 | シャープ株式会社 | 磁気記録媒体および磁気再生方法 |
-
1999
- 1999-09-30 CN CNB998169226A patent/CN1248198C/zh not_active Expired - Fee Related
- 1999-09-30 EP EP99974072A patent/EP1246169B1/en not_active Expired - Lifetime
- 1999-09-30 DE DE69936271T patent/DE69936271T2/de not_active Expired - Lifetime
- 1999-09-30 KR KR1020027003908A patent/KR100702020B1/ko not_active Expired - Fee Related
- 1999-09-30 WO PCT/JP1999/005375 patent/WO2001026100A1/ja not_active Ceased
-
2002
- 2002-03-13 US US10/097,511 patent/US6720075B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1246169A4 (en) | 2005-03-09 |
| US6720075B2 (en) | 2004-04-13 |
| KR100702020B1 (ko) | 2007-03-30 |
| WO2001026100A1 (fr) | 2001-04-12 |
| CN1367921A (zh) | 2002-09-04 |
| KR20020033201A (ko) | 2002-05-04 |
| US20020094454A1 (en) | 2002-07-18 |
| EP1246169A1 (en) | 2002-10-02 |
| DE69936271D1 (de) | 2007-07-19 |
| EP1246169B1 (en) | 2007-06-06 |
| DE69936271T2 (de) | 2007-10-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHOWA DENKO K. K. Free format text: FORMER OWNER: FUJITSU LIMITED Effective date: 20100323 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: KANAGAWA, JAPAN COUNTY TO: TOKYO, JAPAN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100323 Address after: Tokyo, Japan Patentee after: Showa Denko K. K. Address before: Kanagawa, Japan Patentee before: Fujitsu Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060329 Termination date: 20130930 |