CN1689079A - 垂直磁记录介质 - Google Patents
垂直磁记录介质 Download PDFInfo
- Publication number
- CN1689079A CN1689079A CNA028297636A CN02829763A CN1689079A CN 1689079 A CN1689079 A CN 1689079A CN A028297636 A CNA028297636 A CN A028297636A CN 02829763 A CN02829763 A CN 02829763A CN 1689079 A CN1689079 A CN 1689079A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- layer
- magnetic recording
- recording medium
- thickness
- 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.)
- Granted
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
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
- G11B5/676—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having magnetic layers separated by a nonmagnetic layer, e.g. antiferromagnetic layer, Cu layer or coupling layer
-
- 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
-
- 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
- G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
-
- 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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
- Y10T428/24975—No layer or component greater than 5 mils thick
Landscapes
- Magnetic Record Carriers (AREA)
- Thin Magnetic Films (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
Description
Claims (12)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2002/010779 WO2004036556A1 (ja) | 2002-10-17 | 2002-10-17 | 垂直磁気記録媒体 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1689079A true CN1689079A (zh) | 2005-10-26 |
| CN100385508C CN100385508C (zh) | 2008-04-30 |
Family
ID=32104828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028297636A Expired - Fee Related CN100385508C (zh) | 2002-10-17 | 2002-10-17 | 垂直磁记录介质 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7402348B2 (zh) |
| EP (1) | EP1555655B1 (zh) |
| JP (1) | JP3965186B2 (zh) |
| CN (1) | CN100385508C (zh) |
| AU (1) | AU2002335516A1 (zh) |
| DE (1) | DE60224733T2 (zh) |
| WO (1) | WO2004036556A1 (zh) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7498092B2 (en) * | 2005-01-26 | 2009-03-03 | Hitachi Global Storage Technologies Netherlands B.V. | Perpendicular magnetic recording medium with magnetic torque layer coupled to the perpendicular recording layer |
| JP2008140460A (ja) * | 2006-11-30 | 2008-06-19 | Toshiba Corp | 垂直磁気記録媒体及び磁気記録再生装置 |
| JP2009187608A (ja) * | 2008-02-05 | 2009-08-20 | Toshiba Corp | 垂直磁気記録パターンド媒体および磁気記録再生装置 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966821A (en) * | 1986-07-17 | 1990-10-30 | Ricoh Company, Ltd. | Perpendicular magnetic recording medium |
| JP2524514B2 (ja) * | 1987-09-21 | 1996-08-14 | 日立マクセル株式会社 | 磁気記録媒体 |
| JPH0528454A (ja) | 1991-07-24 | 1993-02-05 | Sony Corp | 垂直磁気記録媒体 |
| JP3670728B2 (ja) | 1995-09-25 | 2005-07-13 | 株式会社日立製作所 | 磁気記録媒体およびこれを応用した磁気記録装置 |
| TW390998B (en) * | 1996-05-20 | 2000-05-21 | Hitachi Ltd | Magnetic recording media and magnetic recording system using the same |
| WO1998006093A1 (en) * | 1996-05-20 | 1998-02-12 | Hitachi, Ltd. | Magnetic recording medium and magnetic storage device using the medium |
| JPH10228620A (ja) * | 1997-02-14 | 1998-08-25 | Nec Corp | 垂直磁気記録媒体 |
| JPH11102510A (ja) | 1997-09-30 | 1999-04-13 | Hitachi Ltd | 垂直磁気記録媒体およびこれを用いた磁気記録装置 |
| JPH10334440A (ja) * | 1997-06-03 | 1998-12-18 | Hitachi Ltd | 磁気記録媒体及び磁気記録再生装置 |
| US6403203B2 (en) * | 1997-05-29 | 2002-06-11 | Hitachi, Ltd. | Magnetic recording medium and magnetic recording apparatus using the same |
| JP3740291B2 (ja) * | 1998-08-24 | 2006-02-01 | 日本オプネクスト株式会社 | 光送信器 |
| WO2001031645A1 (en) * | 1999-10-29 | 2001-05-03 | Hitachi Maxell, Ltd. | Magnetic recording medium, method for producing the same, and magnetic recorder |
| JP2002025032A (ja) | 2000-06-30 | 2002-01-25 | Sony Corp | 磁気記録媒体 |
| JP2002100030A (ja) * | 2000-09-21 | 2002-04-05 | Toshiba Corp | 垂直磁気記録媒体 |
| JP4025013B2 (ja) | 2000-12-26 | 2007-12-19 | 株式会社東芝 | 垂直磁気記録方式の磁気ディスク装置 |
| JP2002216333A (ja) | 2001-01-22 | 2002-08-02 | Hitachi Maxell Ltd | 磁気記録媒体及び磁気記録装置 |
| JP2002222517A (ja) | 2001-01-25 | 2002-08-09 | Sony Corp | 磁気記録媒体 |
| JP2002312918A (ja) * | 2001-04-13 | 2002-10-25 | Fujitsu Ltd | 磁気記録媒体 |
| JP3905424B2 (ja) * | 2002-06-06 | 2007-04-18 | 富士通株式会社 | 垂直磁気記録媒体及びこれを備えた磁気記録装置 |
-
2002
- 2002-10-17 CN CNB028297636A patent/CN100385508C/zh not_active Expired - Fee Related
- 2002-10-17 EP EP02808023A patent/EP1555655B1/en not_active Expired - Lifetime
- 2002-10-17 WO PCT/JP2002/010779 patent/WO2004036556A1/ja not_active Ceased
- 2002-10-17 JP JP2004544703A patent/JP3965186B2/ja not_active Expired - Fee Related
- 2002-10-17 DE DE60224733T patent/DE60224733T2/de not_active Expired - Fee Related
- 2002-10-17 AU AU2002335516A patent/AU2002335516A1/en not_active Abandoned
-
2005
- 2005-03-23 US US11/088,241 patent/US7402348B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US20050249982A1 (en) | 2005-11-10 |
| WO2004036556A1 (ja) | 2004-04-29 |
| AU2002335516A1 (en) | 2004-05-04 |
| CN100385508C (zh) | 2008-04-30 |
| DE60224733D1 (de) | 2008-03-06 |
| JPWO2004036556A1 (ja) | 2006-02-16 |
| US7402348B2 (en) | 2008-07-22 |
| JP3965186B2 (ja) | 2007-08-29 |
| DE60224733T2 (de) | 2009-01-15 |
| EP1555655A1 (en) | 2005-07-20 |
| EP1555655B1 (en) | 2008-01-16 |
| EP1555655A4 (en) | 2006-02-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20080430 Termination date: 20121017 |