JP7467759B2 - 磁気ディスク用基板、磁気ディスク、円環形状基板、および磁気ディスク用基板の製造方法 - Google Patents

磁気ディスク用基板、磁気ディスク、円環形状基板、および磁気ディスク用基板の製造方法 Download PDF

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Publication number
JP7467759B2
JP7467759B2 JP2023502500A JP2023502500A JP7467759B2 JP 7467759 B2 JP7467759 B2 JP 7467759B2 JP 2023502500 A JP2023502500 A JP 2023502500A JP 2023502500 A JP2023502500 A JP 2023502500A JP 7467759 B2 JP7467759 B2 JP 7467759B2
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Japan
Prior art keywords
magnetic disk
substrate
side wall
polishing
chamfered
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JP2023502500A
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Japanese (ja)
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JPWO2022181715A1 (https=
Inventor
修平 東
利雄 滝澤
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Hoya Corp
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Hoya Corp
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Priority to JP2024059905A priority Critical patent/JP7809741B2/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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C19/00—Surface treatment of glass, not in the form of fibres or filaments, by mechanical means
    • 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
    • G11B5/74—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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Surface Treatment Of Glass (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
JP2023502500A 2021-02-24 2022-02-24 磁気ディスク用基板、磁気ディスク、円環形状基板、および磁気ディスク用基板の製造方法 Active JP7467759B2 (ja)

Priority Applications (1)

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JP2024059905A JP7809741B2 (ja) 2021-02-24 2024-04-03 磁気ディスク用基板、磁気ディスク、およびハードディスクドライブ

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2021027888 2021-02-24
JP2021027888 2021-02-24
PCT/JP2022/007710 WO2022181715A1 (ja) 2021-02-24 2022-02-24 磁気ディスク用基板、磁気ディスク、円環形状基板、および磁気ディスク用基板の製造方法

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JP2024059905A Division JP7809741B2 (ja) 2021-02-24 2024-04-03 磁気ディスク用基板、磁気ディスク、およびハードディスクドライブ

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JPWO2022181715A1 JPWO2022181715A1 (https=) 2022-09-01
JP7467759B2 true JP7467759B2 (ja) 2024-04-15

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JP2023502500A Active JP7467759B2 (ja) 2021-02-24 2022-02-24 磁気ディスク用基板、磁気ディスク、円環形状基板、および磁気ディスク用基板の製造方法
JP2024059905A Active JP7809741B2 (ja) 2021-02-24 2024-04-03 磁気ディスク用基板、磁気ディスク、およびハードディスクドライブ

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US (2) US12266389B2 (https=)
JP (2) JP7467759B2 (https=)
CN (1) CN116897392A (https=)
WO (1) WO2022181715A1 (https=)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004273030A (ja) 2003-03-10 2004-09-30 Hitachi Ltd ディスク基板、磁気ディスクおよびその製造方法
JP2006040361A (ja) 2004-07-23 2006-02-09 Konica Minolta Opto Inc 情報記録媒体用ガラス基板、情報記録媒体、情報記録装置及び情報記録媒体用ガラス基板の製造方法
JP2009173295A (ja) 2008-01-22 2009-08-06 Konica Minolta Opto Inc 記録媒体用ガラス基板の収納容器、記録媒体用ガラス基板収納体、記録媒体用ガラス基板の製造方法、記録媒体用ガラス基板及び記録媒体
JP5574392B1 (ja) 2012-09-28 2014-08-20 Ｈｏｙａ株式会社 磁気ディスク用ガラス基板、磁気ディスク

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5521781A (en) * 1992-10-30 1996-05-28 Shin-Etsu Chemical Co., Ltd. Substrate for magnetic recording medium
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
US20060018052A1 (en) * 2004-07-23 2006-01-26 Konica Minolta Opto, Inc. Information recording medium glass substrate, information recording medium, information recording apparatus and manufacturing method of information recording medium glass substrate
JP2006079800A (ja) * 2004-08-11 2006-03-23 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
US7789239B2 (en) * 2006-12-11 2010-09-07 Don Juliano Insert trays for packages, packages including such trays, and methods for packaging articles of manufacture
JP2010238302A (ja) 2009-03-31 2010-10-21 Hoya Corp 磁気ディスク用ガラス基板の製造方法及びそれに用いる電着砥石
JP5382280B2 (ja) * 2011-08-29 2014-01-08 旭硝子株式会社 ガラス板
US9595284B2 (en) * 2013-02-22 2017-03-14 Hoya Corporation Glass substrate for magnetic disk and magnetic disk
JP6106813B1 (ja) * 2015-09-30 2017-04-05 Hoya株式会社 磁気ディスク用ガラス基板、磁気ディスク、ガラス基板中間体、及び磁気ディスク用ガラス基板の製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004273030A (ja) 2003-03-10 2004-09-30 Hitachi Ltd ディスク基板、磁気ディスクおよびその製造方法
JP2006040361A (ja) 2004-07-23 2006-02-09 Konica Minolta Opto Inc 情報記録媒体用ガラス基板、情報記録媒体、情報記録装置及び情報記録媒体用ガラス基板の製造方法
JP2009173295A (ja) 2008-01-22 2009-08-06 Konica Minolta Opto Inc 記録媒体用ガラス基板の収納容器、記録媒体用ガラス基板収納体、記録媒体用ガラス基板の製造方法、記録媒体用ガラス基板及び記録媒体
JP5574392B1 (ja) 2012-09-28 2014-08-20 Ｈｏｙａ株式会社 磁気ディスク用ガラス基板、磁気ディスク

Also Published As

Publication number Publication date
US12266389B2 (en) 2025-04-01
JPWO2022181715A1 (https=) 2022-09-01
CN116897392A (zh) 2023-10-17
JP7809741B2 (ja) 2026-02-02
US20250191612A1 (en) 2025-06-12
US20240135970A1 (en) 2024-04-25
JP2024099538A (ja) 2024-07-25
US20240233764A9 (en) 2024-07-11
WO2022181715A1 (ja) 2022-09-01

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