SG11201908015QA - Non-magnetic substrate for magnetic disk, and magnetic disk - Google Patents

Non-magnetic substrate for magnetic disk, and magnetic disk

Info

Publication number
SG11201908015QA
SG11201908015QA SG11201908015QA SG11201908015QA SG 11201908015Q A SG11201908015Q A SG 11201908015QA SG 11201908015Q A SG11201908015Q A SG 11201908015QA SG 11201908015Q A SG11201908015Q A SG 11201908015QA
Authority
SG
Singapore
Prior art keywords
magnetic
substrate
magnetic disk
thickness
metal film
Prior art date
Application number
Other languages
English (en)
Inventor
Kinobu Osakabe
Original Assignee
Hoya Corp
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 filed Critical Hoya Corp
Publication of SG11201908015QA publication Critical patent/SG11201908015QA/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
    • G11B5/62—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

Landscapes

  • 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)
SG11201908015Q 2017-03-31 2018-04-02 Non-magnetic substrate for magnetic disk, and magnetic disk SG11201908015QA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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

Publications (1)

Publication Number Publication Date
SG11201908015QA true SG11201908015QA (en) 2019-10-30

Family

ID=63676296

Family Applications (2)

Application Number Title Priority Date Filing Date
SG11201908015Q SG11201908015QA (en) 2017-03-31 2018-04-02 Non-magnetic substrate for magnetic disk, and magnetic disk
SG10202111088SA SG10202111088SA (en) 2017-03-31 2018-04-02 Non-magnetic substrate for magnetic disk, and magnetic disk

Family Applications After (1)

Application Number Title Priority Date Filing Date
SG10202111088SA SG10202111088SA (en) 2017-03-31 2018-04-02 Non-magnetic substrate for magnetic disk, and magnetic disk

Country Status (7)

Country Link
US (4) US11031036B2 (https=)
JP (5) JP6574537B2 (https=)
CN (2) CN112002351B (https=)
MY (1) MY192572A (https=)
PH (2) PH12021552252A1 (https=)
SG (2) SG11201908015QA (https=)
WO (1) WO2018182046A1 (https=)

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
US11031036B2 (en) 2017-03-31 2021-06-08 Hoya Corporation Non-magnetic substrate for magnetic disk, and magnetic disk
US11152026B2 (en) * 2017-06-30 2021-10-19 Hoya Corporation Substrate for magnetic disks, and magnetic disk
MY208527A (en) 2018-08-07 2025-05-14 Hoya Corp Substrate for magnetic disk and magnetic disk
CN117242520A (zh) * 2021-04-30 2023-12-15 豪雅株式会社 生产环形物体的方法、成膜装置、环形物体和硬盘驱动装置

Family Cites Families (33)

* Cited by examiner, † Cited by third party
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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
US6383404B1 (en) * 1998-08-19 2002-05-07 Hoya Corporation 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
CN100538827C (zh) * 2004-03-25 2009-09-09 Hoya株式会社 磁盘用玻璃基板
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
CN1993735A (zh) * 2004-08-16 2007-07-04 昭和电工株式会社 用于磁记录介质的硅基底、制造硅基底的方法以及磁记录介质
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
CA2804212C (en) * 2010-07-09 2018-01-02 Micro Motion, Inc. A vibrating meter including an improved meter case
US9697860B2 (en) 2012-09-28 2017-07-04 Hoya Corporation Magnetic-disk glass substrate, magnetic disk and method for manufacturing magnetic-disk glass substrate
JP6089039B2 (ja) 2012-09-28 2017-03-01 Hoya株式会社 磁気ディスク用ガラス基板、磁気ディスク
US9595283B2 (en) 2012-12-29 2017-03-14 Hoya Corporation Glass substrate for magnetic disk and magnetic disk
SG11201506622TA (en) * 2013-03-01 2015-09-29 Hoya Corp Glass substrate for magnetic disk and magnetic disk
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
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
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
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
US11031036B2 (en) * 2017-03-31 2021-06-08 Hoya Corporation Non-magnetic substrate for magnetic disk, and magnetic disk
US11152026B2 (en) * 2017-06-30 2021-10-19 Hoya Corporation Substrate for magnetic disks, and magnetic disk

Also Published As

Publication number Publication date
US20240282337A1 (en) 2024-08-22
JP2024075787A (ja) 2024-06-04
US11955151B2 (en) 2024-04-09
CN112002351B (zh) 2022-02-08
JP7646914B2 (ja) 2025-03-17
CN110326042A (zh) 2019-10-11
US11031036B2 (en) 2021-06-08
US11545178B2 (en) 2023-01-03
CN112002351A (zh) 2020-11-27
JP2022028852A (ja) 2022-02-16
JP2023027179A (ja) 2023-03-01
JPWO2018182046A1 (ja) 2019-11-07
US20210264943A1 (en) 2021-08-26
PH12019502068B1 (en) 2020-10-26
PH12019502068A1 (en) 2020-10-26
US20200035268A1 (en) 2020-01-30
JP7465332B2 (ja) 2024-04-10
SG10202111088SA (en) 2021-11-29
PH12021552252A1 (en) 2022-05-02
JP7191185B2 (ja) 2022-12-16
JP6574537B2 (ja) 2019-09-11
JP2019215951A (ja) 2019-12-19
JP6983842B2 (ja) 2021-12-17
MY192572A (en) 2022-08-29
CN110326042B (zh) 2020-09-11
US12548594B2 (en) 2026-02-10
US20230121742A1 (en) 2023-04-20
WO2018182046A1 (ja) 2018-10-04

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