SG10201504278QA - Magnetic disk substrate, magnetic disk, and magnetic disk device - Google Patents

Magnetic disk substrate, magnetic disk, and magnetic disk device

Info

Publication number
SG10201504278QA
SG10201504278QA SG10201504278QA SG10201504278QA SG10201504278QA SG 10201504278Q A SG10201504278Q A SG 10201504278QA SG 10201504278Q A SG10201504278Q A SG 10201504278QA SG 10201504278Q A SG10201504278Q A SG 10201504278QA SG 10201504278Q A SG10201504278Q A SG 10201504278QA
Authority
SG
Singapore
Prior art keywords
magnetic disk
substrate
disk device
disk substrate
magnetic
Prior art date
Application number
SG10201504278QA
Other languages
English (en)
Inventor
Toshio Takizawa
Kraisorn Phandon
Kenichi Nishimori
Original Assignee
Hoya Corp
Hoya Glass Disk Thailand 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
Application filed by Hoya Corp, Hoya Glass Disk Thailand Ltd filed Critical Hoya Corp
Publication of SG10201504278QA publication Critical patent/SG10201504278QA/en

Links

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
    • G11B5/74—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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73913—Composites or coated substrates
    • 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
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73921—Glass or ceramic substrates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Magnetic Record Carriers (AREA)
SG10201504278QA 2007-02-20 2008-02-19 Magnetic disk substrate, magnetic disk, and magnetic disk device SG10201504278QA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007038926 2007-02-20
JP2007038927 2007-02-20

Publications (1)

Publication Number Publication Date
SG10201504278QA true SG10201504278QA (en) 2015-07-30

Family

ID=39710028

Family Applications (3)

Application Number Title Priority Date Filing Date
SG10201504278QA SG10201504278QA (en) 2007-02-20 2008-02-19 Magnetic disk substrate, magnetic disk, and magnetic disk device
SG2013053913A SG192516A1 (en) 2007-02-20 2008-02-19 Magnetic disk substrate, magnetic disk, and magnetic disk device
SG10201501752PA SG10201501752PA (en) 2007-02-20 2008-02-19 Magnetic disc substrate, magnetic disc, and magnetic disc device

Family Applications After (2)

Application Number Title Priority Date Filing Date
SG2013053913A SG192516A1 (en) 2007-02-20 2008-02-19 Magnetic disk substrate, magnetic disk, and magnetic disk device
SG10201501752PA SG10201501752PA (en) 2007-02-20 2008-02-19 Magnetic disc substrate, magnetic disc, and magnetic disc device

Country Status (5)

Country Link
US (5) US8241768B2 (zh)
CN (1) CN102708877B (zh)
MY (3) MY149130A (zh)
SG (3) SG10201504278QA (zh)
WO (1) WO2008102751A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG10201504278QA (en) * 2007-02-20 2015-07-30 Hoya Corp Magnetic disk substrate, magnetic disk, and magnetic disk device
JP2010073289A (ja) * 2008-09-22 2010-04-02 Hoya Corp 磁気ディスク用基板および磁気ディスク
WO2010038741A1 (ja) * 2008-09-30 2010-04-08 Hoya株式会社 磁気ディスク用ガラス基板及び磁気ディスク
WO2013047189A1 (ja) * 2011-09-30 2013-04-04 コニカミノルタアドバンストレイヤー株式会社 情報記録媒体用ガラス基板および情報記録媒体
JP5335983B2 (ja) * 2011-10-05 2013-11-06 Ｈｏｙａ株式会社 磁気ディスク用ガラス基板および磁気記録媒体
US9583128B2 (en) 2012-09-28 2017-02-28 Hoya Corporation Magnetic-disk glass substrate and magnetic disk
CN108198577B (zh) * 2012-12-29 2019-04-23 Hoya株式会社 磁盘用玻璃基板和磁盘
US9595284B2 (en) * 2013-02-22 2017-03-14 Hoya Corporation Glass substrate for magnetic disk and magnetic disk
JP5763852B2 (ja) 2013-03-01 2015-08-12 Hoya株式会社 磁気ディスク用ガラス基板および磁気ディスク
US8896964B1 (en) 2013-05-16 2014-11-25 Seagate Technology Llc Enlarged substrate for magnetic recording medium
SG10201701244VA (en) * 2013-06-27 2017-04-27 Hoya Corp Disk-shaped glass substrate, magnetic-disk glass substrate, method for manufacturing magnetic-disk glass substrate, and magnetic disk
WO2015099178A1 (ja) 2013-12-26 2015-07-02 Hoya株式会社 磁気ディスク用基板、磁気ディスク、及び磁気ディスクドライブ装置
WO2019151459A1 (ja) 2018-02-01 2019-08-08 Hoya株式会社 ガラススペーサ、ハードディスクドライブ装置、及びガラススペーサの製造方法

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JPH06274871A (ja) * 1993-03-18 1994-09-30 Furukawa Electric Co Ltd:The 磁気ディスク用アルミニウム基板の製造方法
JP2000057724A (ja) * 1998-08-04 2000-02-25 Hitachi Ltd 磁気ヘッドスライダ及びそれを用いた磁気ディスク装置
JP3372224B2 (ja) * 1999-07-30 2003-01-27 株式会社ニデック 表面検査装置、表面検査方法及び表面検査プログラムを記録した記録媒体
JP3568888B2 (ja) 1999-09-30 2004-09-22 Ｈｏｙａ株式会社 情報記録媒体用ガラス基板、情報記録媒体、及びそれらの製造方法
US6595028B1 (en) 1999-09-30 2003-07-22 Hoya Corporation Chemical reinforced glass substrate having desirable edge profile and method of manufacturing the same
JP2001344744A (ja) 2000-06-01 2001-12-14 Asahi Techno Glass Corp 磁気ディスク用ガラス基板及び磁気ディスク、並びに磁気ディスク用ガラス基板の製造方法
JP4274708B2 (ja) 2001-05-14 2009-06-10 Ｈｏｙａ株式会社 磁気記録媒体用ガラス基板及びその製造方法
JP2003242627A (ja) 2002-02-14 2003-08-29 Nippon Sheet Glass Co Ltd 情報記録媒体用ガラス基板
JP4199645B2 (ja) 2003-11-07 2008-12-17 Ｈｏｙａ株式会社 磁気ディスク用ガラス基板の製造方法、及び磁気ディスクの製造方法
JP4209316B2 (ja) * 2003-12-12 2009-01-14 Ｈｏｙａ株式会社 情報記録媒体用ガラス基板の製造方法
JP2005203063A (ja) * 2004-01-19 2005-07-28 Hitachi Global Storage Technologies Netherlands Bv 磁気ヘッド及び磁気記録再生装置
JP4078317B2 (ja) * 2004-02-06 2008-04-23 Ｈｏｙａ株式会社 固体表面の評価方法、磁気ディスクの評価方法、磁気ディスクおよびその製造方法
JP2006092722A (ja) 2004-08-27 2006-04-06 Showa Denko Kk 磁気ディスク用基板および磁気ディスクの製造方法
US20080193801A1 (en) * 2004-08-30 2008-08-14 Showa Denko K.K. Glass Substrate for Magnetic Recording Medium and Magnetic Recording Medium
JP2006099949A (ja) * 2004-08-30 2006-04-13 Showa Denko Kk 磁気記録媒体用ガラス基板および磁気記録媒体
JP2006114198A (ja) * 2004-09-17 2006-04-27 Showa Denko Kk 磁気記録媒体用シリコン基板及び磁気記録媒体
JP3816509B2 (ja) * 2004-11-10 2006-08-30 Ｔｄｋ株式会社 磁気記録媒体及び磁気記録再生装置
JP4251171B2 (ja) 2004-12-06 2009-04-08 旭硝子株式会社 ドーナツ状ガラス基板のエッチング方法
US7618895B2 (en) 2004-12-06 2009-11-17 Asahi Glass Company, Limited Method for etching doughnut-type glass substrates
JP2006268984A (ja) * 2005-03-25 2006-10-05 Nihon Micro Coating Co Ltd 垂直磁気記録ディスク及びその製造方法
US20090136786A1 (en) * 2005-09-22 2009-05-28 Showa Denko Silicon substrate for magnetic recording medium and magnetic recording medium
US20090117411A1 (en) * 2005-12-19 2009-05-07 Showa Denko K.K. Magnetic disk substrate and magnetic disk thereof
JP4836731B2 (ja) * 2006-07-18 2011-12-14 旭硝子株式会社 磁気ディスク用ガラス基板の製造方法
MY161777A (en) * 2006-09-20 2017-05-15 Hoya Corp Glass disk processing method
US7636215B2 (en) * 2007-01-19 2009-12-22 Tdk Corporation Magnetic recording medium, recording/reproducing apparatus, and method of manufacturing a magnetic recording medium
SG10201504278QA (en) * 2007-02-20 2015-07-30 Hoya Corp Magnetic disk substrate, magnetic disk, and magnetic disk device
US7894162B2 (en) * 2007-04-16 2011-02-22 Sae Magnetics (Hk) Ltd. Method to protect the magnetic recording head from thermal asperities during disk drive operation
JP2010102819A (ja) * 2008-09-26 2010-05-06 Hoya Corp 磁気ディスク用基板及び磁気ディスク
US8896964B1 (en) * 2013-05-16 2014-11-25 Seagate Technology Llc Enlarged substrate for magnetic recording medium

Also Published As

Publication number Publication date
MY193839A (en) 2022-10-28
MY163763A (en) 2017-10-31
MY149130A (en) 2013-07-15
US8241768B2 (en) 2012-08-14
US10607647B2 (en) 2020-03-31
SG192516A1 (en) 2013-08-30
CN102708877A (zh) 2012-10-03
WO2008102751A1 (ja) 2008-08-28
US8986859B2 (en) 2015-03-24
US20150109703A1 (en) 2015-04-23
US20170270956A1 (en) 2017-09-21
CN102708877B (zh) 2015-07-01
US20120276416A1 (en) 2012-11-01
US9697861B2 (en) 2017-07-04
US20150340054A1 (en) 2015-11-26
US20100040907A1 (en) 2010-02-18
SG10201501752PA (en) 2015-05-28
US9183866B2 (en) 2015-11-10

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