JP6467118B1 - 磁気ディスク用基板及び磁気ディスク - Google Patents

磁気ディスク用基板及び磁気ディスク Download PDF

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Publication number
JP6467118B1
JP6467118B1 JP2018557056A JP2018557056A JP6467118B1 JP 6467118 B1 JP6467118 B1 JP 6467118B1 JP 2018557056 A JP2018557056 A JP 2018557056A JP 2018557056 A JP2018557056 A JP 2018557056A JP 6467118 B1 JP6467118 B1 JP 6467118B1
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film
substrate
magnetic disk
thickness
main surface
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JP2018557056A
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Japanese (ja)
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JPWO2019004484A1 (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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    • 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
    • G11B5/62—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
    • 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
    • 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
    • G11B5/73917—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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Ceramic Engineering (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
JP2018557056A 2017-06-30 2018-07-02 磁気ディスク用基板及び磁気ディスク Active JP6467118B1 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2017129613 2017-06-30
JP2017129613 2017-06-30
PCT/JP2018/025104 WO2019004484A1 (ja) 2017-06-30 2018-07-02 磁気ディスク用基板及び磁気ディスク

Related Child Applications (1)

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JP2019002969A Division JP7092689B2 (ja) 2017-06-30 2019-01-10 磁気ディスク用基板及び磁気ディスク

Publications (2)

Publication Number Publication Date
JP6467118B1 true JP6467118B1 (ja) 2019-02-06
JPWO2019004484A1 JPWO2019004484A1 (ja) 2019-06-27

Family

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Family Applications (4)

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JP2018557056A Active JP6467118B1 (ja) 2017-06-30 2018-07-02 磁気ディスク用基板及び磁気ディスク
JP2019002969A Active JP7092689B2 (ja) 2017-06-30 2019-01-10 磁気ディスク用基板及び磁気ディスク
JP2022096972A Active JP7326542B2 (ja) 2017-06-30 2022-06-16 磁気ディスク用基板及び磁気ディスク
JP2023126136A Active JP7595713B2 (ja) 2017-06-30 2023-08-02 磁気ディスク用基板及び磁気ディスク

Family Applications After (3)

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JP2019002969A Active JP7092689B2 (ja) 2017-06-30 2019-01-10 磁気ディスク用基板及び磁気ディスク
JP2022096972A Active JP7326542B2 (ja) 2017-06-30 2022-06-16 磁気ディスク用基板及び磁気ディスク
JP2023126136A Active JP7595713B2 (ja) 2017-06-30 2023-08-02 磁気ディスク用基板及び磁気ディスク

Country Status (7)

Country Link
US (4) US11152026B2 (https=)
JP (4) JP6467118B1 (https=)
CN (2) CN113362863B (https=)
MY (1) MY196313A (https=)
PH (2) PH12019502156B1 (https=)
SG (1) SG11201908016WA (https=)
WO (1) WO2019004484A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022004826A1 (ja) * 2020-07-03 2022-01-06 株式会社Uacj 磁気ディスク用基板及び当該磁気ディスク用基板を用いた磁気ディスク

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Publication number Priority date Publication date Assignee Title
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
JP6895918B2 (ja) * 2018-03-23 2021-06-30 古河電気工業株式会社 磁気ディスク用アルミニウム合金基板、ディスク駆動装置、及び磁気ディスク用アルミニウム合金基板の製造方法
MY208527A (en) 2018-08-07 2025-05-14 Hoya Corp Substrate for magnetic disk and magnetic disk
JP7077248B2 (ja) * 2019-02-07 2022-05-30 株式会社東芝 ディスク装置
US20210090601A1 (en) 2019-09-25 2021-03-25 Western Digital Technologies, Inc. Magnetic recording apparatus comprising disk with reduced thickness and reduced disk flatness
CN115176310A (zh) * 2020-03-06 2022-10-11 豪雅株式会社 玻璃间隔件的制造方法、玻璃间隔件和硬盘驱动器装置
CN120937077A (zh) * 2023-03-31 2025-11-11 豪雅株式会社 信息记录介质用盘、盘中间体及信息记录介质用基板
WO2025150557A1 (ja) * 2024-01-11 2025-07-17 株式会社Uacj 磁気ディスク用ディスクブランク及び磁気ディスク

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JP5939350B1 (ja) * 2015-12-28 2016-06-22 旭硝子株式会社 磁気記録媒体用ガラス基板、磁気記録媒体

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US4882236A (en) * 1988-02-10 1989-11-21 Olin Corporation Rigid magnetic recording disks and method of producing same
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US5747135A (en) * 1995-12-08 1998-05-05 Aluminum Company Of America Thin film pretreatment for memory disks and associated methods
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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
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JPH08212518A (ja) * 1995-02-03 1996-08-20 Hitachi Ltd 磁気記憶装置及び多層磁性層磁気記録媒体
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
JP2010218657A (ja) * 2009-03-18 2010-09-30 Toshiba Corp 磁気記録媒体の製造方法
JP2012126626A (ja) * 2010-12-17 2012-07-05 Konica Minolta Advanced Layers Inc 記録媒体用ガラス基板
JP5939350B1 (ja) * 2015-12-28 2016-06-22 旭硝子株式会社 磁気記録媒体用ガラス基板、磁気記録媒体

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022004826A1 (ja) * 2020-07-03 2022-01-06 株式会社Uacj 磁気ディスク用基板及び当該磁気ディスク用基板を用いた磁気ディスク
JP2022013061A (ja) * 2020-07-03 2022-01-18 株式会社Uacj 磁気ディスク用基板及び当該磁気ディスク用基板を用いた磁気ディスク
JP7037600B2 (ja) 2020-07-03 2022-03-16 株式会社Uacj 磁気ディスク用基板及び当該磁気ディスク用基板を用いた磁気ディスク
JP7478766B2 (ja) 2020-07-03 2024-05-07 株式会社Uacj 磁気ディスク用基板及び当該磁気ディスク用基板を用いた磁気ディスク
US12555602B2 (en) 2020-07-03 2026-02-17 Uacj Corporation Magnetic disk substrate and magnetic disk using magnetic disk substrate

Also Published As

Publication number Publication date
US11694718B2 (en) 2023-07-04
SG11201908016WA (en) 2019-09-27
JP2022120158A (ja) 2022-08-17
CN110431627A (zh) 2019-11-08
JP7595713B2 (ja) 2024-12-06
US20250095682A1 (en) 2025-03-20
JP2023133503A (ja) 2023-09-22
JP7326542B2 (ja) 2023-08-15
CN113362863B (zh) 2022-09-30
JPWO2019004484A1 (ja) 2019-06-27
US12190923B2 (en) 2025-01-07
PH12019502156B1 (en) 2024-06-14
US20210407544A1 (en) 2021-12-30
US11152026B2 (en) 2021-10-19
JP2019053813A (ja) 2019-04-04
JP7092689B2 (ja) 2022-06-28
WO2019004484A1 (ja) 2019-01-03
US20230298623A1 (en) 2023-09-21
PH12019502156A1 (en) 2020-07-06
CN110431627B (zh) 2021-07-02
MY196313A (en) 2023-03-24
CN113362863A (zh) 2021-09-07
US20200027481A1 (en) 2020-01-23
PH12021552253A1 (en) 2023-10-23

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