DE69026182D1 - Magnetplattengerät und Magnetplatte - Google Patents

Magnetplattengerät und Magnetplatte

Info

Publication number
DE69026182D1
DE69026182D1 DE69026182T DE69026182T DE69026182D1 DE 69026182 D1 DE69026182 D1 DE 69026182D1 DE 69026182 T DE69026182 T DE 69026182T DE 69026182 T DE69026182 T DE 69026182T DE 69026182 D1 DE69026182 D1 DE 69026182D1
Authority
DE
Germany
Prior art keywords
magnetic disk
disk device
magnetic
disk
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 - Lifetime
Application number
DE69026182T
Other languages
English (en)
Other versions
DE69026182T2 (de
Inventor
Hideaki Tanaka
Kenichi Gomi
Shoichi Sawahata
Maki Kondo
Masaki Ohura
Norikazu Tsumita
Katuo Uda
Yoshiki Kato
Yoshihiko Miyake
Toyoji Okuwaki
Noriaki Okamoto
Nobuo Nakagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HGST Japan Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP26493489A external-priority patent/JPH03127327A/ja
Priority claimed from JP4928190A external-priority patent/JP2635197B2/ja
Priority claimed from JP9644890A external-priority patent/JP2947863B2/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of DE69026182D1 publication Critical patent/DE69026182D1/de
Application granted granted Critical
Publication of DE69026182T2 publication Critical patent/DE69026182T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/50—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges
    • G11B23/505—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers
    • 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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers
    • G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
    • 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
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction
    • G11B5/726—Two or more protective coatings
    • G11B5/7262—Inorganic protective coating
    • G11B5/7264—Inorganic carbon protective coating, e.g. graphite, diamond like carbon or doped carbon
    • G11B5/7266—Inorganic carbon protective coating, e.g. graphite, diamond like carbon or doped carbon comprising a lubricant over the inorganic carbon coating
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/743—Patterned record carriers, wherein the magnetic recording layer is patterned into magnetic isolated data islands, e.g. discrete tracks
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
    • 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
    • G11B5/8408—Processes or apparatus specially adapted for manufacturing record carriers protecting the magnetic layer
DE69026182T 1989-10-13 1990-10-11 Magnetplattengerät und Magnetplatte Expired - Lifetime DE69026182T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP26493489A JPH03127327A (ja) 1989-10-13 1989-10-13 磁気デイスクとその製造法及び磁気デイスク装置
JP4928190A JP2635197B2 (ja) 1990-03-02 1990-03-02 磁気デイスク装置と磁気記録媒体および磁気記録媒体の製造方法
JP9644890A JP2947863B2 (ja) 1990-04-13 1990-04-13 磁気デイスク装置及び磁気記録媒体

Publications (2)

Publication Number Publication Date
DE69026182D1 true DE69026182D1 (de) 1996-05-02
DE69026182T2 DE69026182T2 (de) 1996-08-08

Family

ID=27293579

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69026182T Expired - Lifetime DE69026182T2 (de) 1989-10-13 1990-10-11 Magnetplattengerät und Magnetplatte

Country Status (3)

Country Link
US (1) US5285343A (de)
EP (1) EP0422640B1 (de)
DE (1) DE69026182T2 (de)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5504646A (en) * 1989-10-13 1996-04-02 Hitachi, Ltd. Magnetic disk including protective layer having surface with protusions and magnetic disk apparatus including the magnetic disk
US5949612A (en) * 1995-03-21 1999-09-07 Censtor Corp. Low friction sliding hard disk drive system
US5656349A (en) * 1990-07-04 1997-08-12 Hitachi, Ltd. Magnetic disk, method of manufacturing the same and magnetic disk apparatus including the magnetic disk
JPH0512648A (ja) * 1991-05-01 1993-01-22 Hitachi Maxell Ltd 磁気デイスク
JPH05114127A (ja) * 1991-10-23 1993-05-07 Hitachi Ltd 磁気デイスク及びその製造方法並びに磁気デイスク装置
JPH05225556A (ja) * 1991-12-16 1993-09-03 Internatl Business Mach Corp <Ibm> 保護膜を改良した磁気記録ディスク
US5768075A (en) 1991-12-17 1998-06-16 Baradun R&D Ltd. Disk medium w/magnetically filled features aligned in rows and columns
US5690838A (en) * 1993-06-18 1997-11-25 Hitachi, Ltd. Magnetic recording medium and process for producing same
US5635037A (en) * 1993-08-02 1997-06-03 Industrial Technology Research Institute Method of texture by in-situ masking and etching for thin film magnetic recording medium
WO1995006942A1 (en) * 1993-09-03 1995-03-09 Seagate Technology, Inc. Magnetic disc surface texture for improved tribological performance
US5768076A (en) * 1993-11-10 1998-06-16 International Business Machines Corporation Magnetic recording disk having a laser-textured surface
JPH08249637A (ja) * 1995-03-07 1996-09-27 Hitachi Ltd 磁気ディスクおよびその製造方法ならびに磁気ディスク装置
JP2783181B2 (ja) * 1995-03-08 1998-08-06 日本電気株式会社 固定磁気ディスク装置の製造方法
US6804085B1 (en) * 1995-03-21 2004-10-12 Seagate Technology, Llc Hard drive system interface between a disk surface and a transducer contacting the surface during communication
US5824387A (en) * 1996-02-05 1998-10-20 Seagate Technology, Inc. Magnetic disc with carbon protective layer having regions differing in hardness
JPH09305966A (ja) * 1996-05-20 1997-11-28 Sony Corp 磁気ディスク及び磁気ディスク装置
US20010002159A1 (en) * 1996-10-17 2001-05-31 Osamu Morita Discoidal recording medium, head slider and recording and/or playback apparatus
JPH11161944A (ja) * 1997-11-27 1999-06-18 Sony Corp 磁気ディスク及び磁気ディスク装置
US6706358B1 (en) 1998-04-09 2004-03-16 Seagate Technology Llc Storage disk comprising depressions and /or raised features
EP1078361A1 (de) * 1998-04-09 2001-02-28 Seagate Technology LLC Speicherplatte mit vertiefungen und/oder erhabenen merkmalen
JP2000067430A (ja) * 1998-08-19 2000-03-03 Fujitsu Ltd 磁気ディスク装置
US6665145B2 (en) * 1999-02-10 2003-12-16 Tdk Corporation Magnetic recording medium with unit minute recording portions
US6381092B1 (en) * 2000-01-10 2002-04-30 Komag, Inc. Spacer rings to compensate for disk warpage
US6995934B2 (en) * 2002-12-23 2006-02-07 Imation Corp. Noise suppressed data storage media
JP4593128B2 (ja) * 2004-02-26 2010-12-08 Ｔｄｋ株式会社 磁気記録媒体及び磁気記録再生装置
JP4111276B2 (ja) * 2004-02-26 2008-07-02 Ｔｄｋ株式会社 磁気記録媒体及び磁気記録再生装置
JP2007087463A (ja) * 2005-09-20 2007-04-05 Toshiba Corp 磁気記録媒体、その製造方法、及び磁気記録再生装置
US7719793B2 (en) 2005-12-28 2010-05-18 Hitachi Global Storage Technologies Netherlands B.V. Circumferentially patterned disk for longitudinal and perpendicular recording

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5720925A (en) * 1980-07-09 1982-02-03 Nec Corp Magnetic disk
JPS5984348A (ja) * 1982-11-05 1984-05-16 Fujitsu Ltd 磁気デイスクの製造方法
JPS59124031A (ja) * 1982-12-29 1984-07-18 Fujitsu Ltd 磁気デイスク製造法
JPS605423A (ja) * 1983-06-22 1985-01-12 Fujitsu Ltd 連続磁性膜型磁気記録媒体
JPS6040528A (ja) * 1983-08-15 1985-03-02 Hitachi Ltd 磁気ディスクの製造方法
JPS613322A (ja) * 1984-06-14 1986-01-09 Mitsubishi Electric Corp 磁気デイスク装置
JPS6150211A (ja) * 1984-08-20 1986-03-12 Res Dev Corp Of Japan 垂直磁気記録媒体およびその製法
US4816933A (en) * 1984-10-23 1989-03-28 Tdk Corporation Magnetic recording medium of particular coercive force, filling ratio, and protrusions and recording/reproducing method therefor
EP0218811B1 (de) * 1985-07-19 1991-05-29 Kabushiki Kaisha Toshiba Gleitstückzusammenbau für magnetische Köpfe
JPS63244312A (ja) * 1987-03-31 1988-10-11 Showa Denko Kk 磁気デイスク用基板の製造方法
JPS63249933A (ja) * 1987-04-03 1988-10-17 Hitachi Ltd 磁気デイスク媒体
JPS6422028A (en) * 1987-07-17 1989-01-25 Sony Corp Forming method for pattern
JPS6434720A (en) * 1987-07-31 1989-02-06 Kyoraku Co Ltd Manufacture of plastic hollow body
US5047274A (en) * 1987-09-28 1991-09-10 Noboru Tsuya Annodized aluminum substrate for a magnetic recording disk in which pores are filled with a non magnetic material and the surface polished and etched
JP2886872B2 (ja) * 1989-01-13 1999-04-26 株式会社日立製作所 磁気ディスク用基板および磁気ディスク

Also Published As

Publication number Publication date
EP0422640B1 (de) 1996-03-27
US5285343A (en) 1994-02-08
EP0422640A2 (de) 1991-04-17
EP0422640A3 (en) 1992-06-03
DE69026182T2 (de) 1996-08-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HITACHI GLOBAL STORAGE TECHNOLOGIES JAPAN,LTD., OD