JPH01140616U - - Google Patents

Info

Publication number
JPH01140616U
JPH01140616U JP1988034816U JP3481688U JPH01140616U JP H01140616 U JPH01140616 U JP H01140616U JP 1988034816 U JP1988034816 U JP 1988034816U JP 3481688 U JP3481688 U JP 3481688U JP H01140616 U JPH01140616 U JP H01140616U
Authority
JP
Japan
Prior art keywords
texture
magnetic disk
area
film
opening
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.)
Pending
Application number
JP1988034816U
Other languages
English (en)
Japanese (ja)
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
Application filed filed Critical
Priority to JP1988034816U priority Critical patent/JPH01140616U/ja
Publication of JPH01140616U publication Critical patent/JPH01140616U/ja
Priority to US07/451,789 priority patent/US4996622A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G11B23/507—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers combined with means for reducing influence of physical parameters, e.g. temperature change, moisture
    • 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

Landscapes

  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
JP1988034816U 1988-03-16 1988-03-16 Pending JPH01140616U (US20030220297A1-20031127-C00074.png)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1988034816U JPH01140616U (US20030220297A1-20031127-C00074.png) 1988-03-16 1988-03-16
US07/451,789 US4996622A (en) 1988-03-16 1989-12-18 Magnetic disk with textured area on part of disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988034816U JPH01140616U (US20030220297A1-20031127-C00074.png) 1988-03-16 1988-03-16

Publications (1)

Publication Number Publication Date
JPH01140616U true JPH01140616U (US20030220297A1-20031127-C00074.png) 1989-09-26

Family

ID=12424731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988034816U Pending JPH01140616U (US20030220297A1-20031127-C00074.png) 1988-03-16 1988-03-16

Country Status (2)

Country Link
US (1) US4996622A (US20030220297A1-20031127-C00074.png)
JP (1) JPH01140616U (US20030220297A1-20031127-C00074.png)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5202810A (en) * 1989-04-27 1993-04-13 Hitachi, Ltd. Magnetic disk having an improved surface configuration
EP0438177B1 (en) * 1990-01-19 1994-09-07 Sony Corporation Magnetic recording disk
US5108781A (en) * 1990-03-12 1992-04-28 Magnetic Peripherals Inc. Process for manufacturing selectively textured magnetic recording media
JPH0485771A (ja) * 1990-07-27 1992-03-18 Hitachi Ltd 磁気記録装置
US5210673A (en) * 1991-09-09 1993-05-11 Hitachi Metals, Ltd. Thin-film hard disk magnetic medium
WO1993012520A1 (en) * 1991-12-17 1993-06-24 Certus Magnetics Magnetic disk medium with designed textured surfaces and controlled surface roughness and method of providing same
EP0579399A2 (en) * 1992-07-09 1994-01-19 Pilkington Plc Glass substrate for a magnetic disc and manufacture thereof
US5534321A (en) * 1993-05-20 1996-07-09 Corning Incorporated Disk substrate for magnetic memory devices
GB9400259D0 (en) * 1994-01-07 1994-03-02 Pilkington Plc Substrate for a magnetic disc and manufacture thereof
US6075677A (en) * 1995-07-27 2000-06-13 Seagate Technology, Inc. Method for positioning a read/write head to reduce wear for proximity recording in a magnetic disk storage system
US6048255A (en) * 1995-08-22 2000-04-11 Seagate Technology, Inc. Pulsed laser surface treatments for magnetic recording media
US6218033B1 (en) 1996-02-26 2001-04-17 Akashic Memories Corporation Magnetic recording media having CrTiX underlayers to reduce circumferential/radial anisotropy and methods for their production
JP2001521666A (ja) * 1997-03-18 2001-11-06 シーゲイト テクノロジー エルエルシー ランダムに位置したテクスチュア形状を備えた磁気媒体
JP3209509B2 (ja) * 1997-03-28 2001-09-17 インターナショナル・ビジネス・マシーンズ・コーポレーション ディスク状記録装置及びディスクドライブ装置
US6068891A (en) * 1997-08-15 2000-05-30 Komag, Inc. Method for laser texturing a glass ceramic substrate and the resulting substrate
US5959814A (en) * 1997-09-16 1999-09-28 Quantum Corporation Magnetic disk having separate park and take-off zones
US6351339B1 (en) 1998-05-11 2002-02-26 Ronni Corporation Multi-dimensionally oriented magnetic field information storage system
US6320728B1 (en) * 1998-05-19 2001-11-20 Seagate Technology Llc Laser textured magnetic surface micro-ridges/grooves to enhance magnetic recording performance
JP2002536778A (ja) 1999-02-12 2002-10-29 ゼネラル・エレクトリック・カンパニイ データ記憶媒体
US7179551B2 (en) 1999-02-12 2007-02-20 General Electric Company Poly(arylene ether) data storage media
KR20030090761A (ko) * 2001-04-19 2003-11-28 제너럴 일렉트릭 캄파니 회전 피복된 매체
US7301726B1 (en) * 2004-11-04 2007-11-27 Komag, Inc. Banded LZT CSS zone
US9666229B1 (en) * 2016-02-16 2017-05-30 L2 Drive Inc. Active control of a read/write head for reduced head-media spacing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152487A (en) * 1976-12-17 1979-05-01 Nippon Electric Co., Ltd. Magnetic record member
US4738885A (en) * 1986-02-24 1988-04-19 Kyocera Corporation Magnetic disk, substrate therefor and process for preparation thereof

Also Published As

Publication number Publication date
US4996622A (en) 1991-02-26

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