JP6574537B2 - 磁気ディスク用非磁性基板及び磁気ディスク - Google Patents

磁気ディスク用非磁性基板及び磁気ディスク Download PDF

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Publication number
JP6574537B2
JP6574537B2 JP2019509441A JP2019509441A JP6574537B2 JP 6574537 B2 JP6574537 B2 JP 6574537B2 JP 2019509441 A JP2019509441 A JP 2019509441A JP 2019509441 A JP2019509441 A JP 2019509441A JP 6574537 B2 JP6574537 B2 JP 6574537B2
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substrate
film
thickness
magnetic disk
magnetic
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Japanese (ja)
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JPWO2018182046A1 (ja
Inventor
基延 越阪部
基延 越阪部
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Hoya Corp
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Hoya Corp
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Publication of JPWO2018182046A1 publication Critical patent/JPWO2018182046A1/ja
Priority to JP2021189876A priority patent/JP7191185B2/ja
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    • 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
    • G11B5/73917—Metallic substrates, i.e. elemental metal or metal alloy 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
    • 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
    • G11B5/73915—Silicon compound based 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
    • G11B5/62—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
    • G11B5/73917—Metallic substrates, i.e. elemental metal or metal alloy substrates
    • G11B5/73919—Aluminium or titanium elemental or alloy 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Metallurgy (AREA)
  • Ceramic Engineering (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
JP2019509441A 2017-03-31 2018-04-02 磁気ディスク用非磁性基板及び磁気ディスク Active JP6574537B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019149512A JP6983842B2 (ja) 2017-03-31 2019-08-16 磁気ディスク用非磁性基板及び磁気ディスク
JP2021189876A JP7191185B2 (ja) 2017-03-31 2021-11-24 磁気ディスク用非磁性基板及び磁気ディスク

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2017070232 2017-03-31
JP2017070232 2017-03-31
PCT/JP2018/014169 WO2018182046A1 (ja) 2017-03-31 2018-04-02 磁気ディスク用非磁性基板及び磁気ディスク

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2019149512A Division JP6983842B2 (ja) 2017-03-31 2019-08-16 磁気ディスク用非磁性基板及び磁気ディスク

Publications (2)

Publication Number Publication Date
JP6574537B2 true JP6574537B2 (ja) 2019-09-11
JPWO2018182046A1 JPWO2018182046A1 (ja) 2019-11-07

Family

ID=63676296

Family Applications (5)

Application Number Title Priority Date Filing Date
JP2019509441A Active JP6574537B2 (ja) 2017-03-31 2018-04-02 磁気ディスク用非磁性基板及び磁気ディスク
JP2019149512A Active JP6983842B2 (ja) 2017-03-31 2019-08-16 磁気ディスク用非磁性基板及び磁気ディスク
JP2021189876A Active JP7191185B2 (ja) 2017-03-31 2021-11-24 磁気ディスク用非磁性基板及び磁気ディスク
JP2022194840A Active JP7465332B2 (ja) 2017-03-31 2022-12-06 磁気ディスク用非磁性基板及び磁気ディスク
JP2024056918A Active JP7646914B2 (ja) 2017-03-31 2024-03-29 磁気ディスク用非磁性基板及び磁気ディスク

Family Applications After (4)

Application Number Title Priority Date Filing Date
JP2019149512A Active JP6983842B2 (ja) 2017-03-31 2019-08-16 磁気ディスク用非磁性基板及び磁気ディスク
JP2021189876A Active JP7191185B2 (ja) 2017-03-31 2021-11-24 磁気ディスク用非磁性基板及び磁気ディスク
JP2022194840A Active JP7465332B2 (ja) 2017-03-31 2022-12-06 磁気ディスク用非磁性基板及び磁気ディスク
JP2024056918A Active JP7646914B2 (ja) 2017-03-31 2024-03-29 磁気ディスク用非磁性基板及び磁気ディスク

Country Status (7)

Country Link
US (4) US11031036B2 (enExample)
JP (5) JP6574537B2 (enExample)
CN (2) CN110326042B (enExample)
MY (1) MY192572A (enExample)
PH (2) PH12021552252A1 (enExample)
SG (2) SG10202111088SA (enExample)
WO (1) WO2018182046A1 (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI755466B (zh) * 2016-12-28 2022-02-21 日商東洋鋼鈑股份有限公司 硬碟用基板及使用其之硬碟裝置
SG10202111088SA (en) * 2017-03-31 2021-11-29 Hoya Corp Non-magnetic substrate for magnetic disk, and magnetic disk
JP6467118B1 (ja) 2017-06-30 2019-02-06 Hoya株式会社 磁気ディスク用基板及び磁気ディスク
CN116798456B (zh) * 2018-08-07 2026-06-12 Hoya株式会社 磁盘用基板、磁盘以及硬盘驱动装置
JP7723079B2 (ja) * 2021-04-30 2025-08-13 Hoya株式会社 リング状物体の製造方法、成膜装置、ハードディスクドライブ用スペーサ、及びハードディスクドライブ装置

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US4882236A (en) * 1988-02-10 1989-11-21 Olin Corporation Rigid magnetic recording disks and method of producing same
JPH0757233A (ja) * 1993-08-19 1995-03-03 Hitachi Ltd 磁気記録媒体
US5626943A (en) * 1994-06-02 1997-05-06 The Carborundum Company Ultra-smooth ceramic substrates and magnetic data storage media prepared therefrom
US5747135A (en) * 1995-12-08 1998-05-05 Aluminum Company Of America Thin film pretreatment for memory disks and associated methods
JPH09198640A (ja) 1996-01-16 1997-07-31 Kobe Steel Ltd 磁気ディスク
SG84541A1 (en) * 1998-08-19 2001-11-20 Hoya Corp Glass substrate for magnetic recording medium, magnetic recording medium, and method of manufacturing the same
US6316097B1 (en) * 1998-09-28 2001-11-13 Seagate Technology Llc Electroless plating process for alternative memory disk substrates
JP2003016633A (ja) * 2001-06-28 2003-01-17 Asahi Glass Co Ltd 磁気ディスク用ガラス基板及びその製造方法
JP2003263713A (ja) * 2002-03-08 2003-09-19 Canon Inc 円筒状磁気記録媒体およびその作製方法
US7891212B2 (en) 2004-03-25 2011-02-22 Hoya Corporation Magnetic disk glass substrate
JP2005322364A (ja) * 2004-05-11 2005-11-17 Fuji Electric Device Technology Co Ltd 垂直磁気記録媒体用ディスク基板、該基板を用いた垂直磁気記録媒体、および、それらの製造方法
JP2005346880A (ja) * 2004-06-07 2005-12-15 Toshiba Corp 磁気記録再生装置
JP2006085887A (ja) * 2004-08-16 2006-03-30 Showa Denko Kk 磁気記録媒体用シリコン基板及びその製造方法並びに磁気記録媒体
US7573674B1 (en) * 2004-12-23 2009-08-11 Maxtor Corporation Storage disk having increased damping characteristics in a disk drive
JP2006260700A (ja) * 2005-03-18 2006-09-28 Fujitsu Ltd 磁気記録媒体及び磁気記録装置
JP2006302358A (ja) * 2005-04-18 2006-11-02 Kobe Steel Ltd 磁気記録媒体用Ａｌ合金基板および磁気記録媒体
JP2007066390A (ja) * 2005-08-30 2007-03-15 Konica Minolta Opto Inc 磁気記録媒体用基板、及び磁気記録媒体用基板の製造方法
JP4665886B2 (ja) * 2006-10-27 2011-04-06 富士電機デバイステクノロジー株式会社 垂直磁気記録媒体、垂直磁気記録媒体用基板、および、それらの製造方法
JP2009160831A (ja) * 2008-01-08 2009-07-23 Fujifilm Corp パターンローラの製作方法
JP2010118111A (ja) 2008-11-12 2010-05-27 Toshiba Storage Device Corp 磁気記憶装置
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WO2014050241A1 (ja) 2012-09-28 2014-04-03 Hoya株式会社 磁気ディスク用ガラス基板、磁気ディスク、磁気ディスク用ガラス基板の製造方法
WO2014051153A1 (ja) 2012-09-28 2014-04-03 Hoya株式会社 磁気ディスク用ガラス基板、磁気ディスク
JP5860173B2 (ja) * 2012-12-29 2016-02-16 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
WO2014133148A1 (ja) 2013-03-01 2014-09-04 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
JP5762612B1 (ja) 2014-09-27 2015-08-12 株式会社Uacj 磁気ディスク基板用アルミニウム合金板及びその製造方法、ならびに、磁気ディスクの製造方法
CN110450009B (zh) 2014-12-31 2021-08-13 Hoya株式会社 基板的制造方法、基板端面的加工装置、基板端面的加工方法和磨削用磨石
JP2016126808A (ja) 2014-12-31 2016-07-11 Hoya株式会社 磁気ディスク用基板の製造方法、及び端面研磨処理装置
JP2017199442A (ja) 2016-04-25 2017-11-02 旭硝子株式会社 磁気記録媒体用基板の製造方法、磁気記録媒体用基板の梱包体
TWI755466B (zh) 2016-12-28 2022-02-21 日商東洋鋼鈑股份有限公司 硬碟用基板及使用其之硬碟裝置
JP6832179B2 (ja) 2017-02-03 2021-02-24 昭和電工株式会社 磁気記録媒体用基板およびハードディスクドライブ
SG10202111088SA (en) * 2017-03-31 2021-11-29 Hoya Corp Non-magnetic substrate for magnetic disk, and magnetic disk
JP6467118B1 (ja) * 2017-06-30 2019-02-06 Hoya株式会社 磁気ディスク用基板及び磁気ディスク

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Publication number Publication date
US20230121742A1 (en) 2023-04-20
CN110326042A (zh) 2019-10-11
JP7646914B2 (ja) 2025-03-17
US11031036B2 (en) 2021-06-08
US20240282337A1 (en) 2024-08-22
CN112002351B (zh) 2022-02-08
US20210264943A1 (en) 2021-08-26
US11955151B2 (en) 2024-04-09
WO2018182046A1 (ja) 2018-10-04
US12548594B2 (en) 2026-02-10
JP2022028852A (ja) 2022-02-16
JP6983842B2 (ja) 2021-12-17
JP2019215951A (ja) 2019-12-19
MY192572A (en) 2022-08-29
US11545178B2 (en) 2023-01-03
SG11201908015QA (en) 2019-10-30
PH12019502068A1 (en) 2020-10-26
CN112002351A (zh) 2020-11-27
JPWO2018182046A1 (ja) 2019-11-07
JP2024075787A (ja) 2024-06-04
SG10202111088SA (en) 2021-11-29
JP7191185B2 (ja) 2022-12-16
JP2023027179A (ja) 2023-03-01
PH12021552252A1 (en) 2022-05-02
JP7465332B2 (ja) 2024-04-10
PH12019502068B1 (en) 2020-10-26
CN110326042B (zh) 2020-09-11
US20200035268A1 (en) 2020-01-30

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