SG11201908016WA - Substrate for magnetic disks, and magnetic disk - Google Patents

Substrate for magnetic disks, and magnetic disk

Info

Publication number
SG11201908016WA
SG11201908016WA SG11201908016WA SG11201908016WA SG11201908016WA SG 11201908016W A SG11201908016W A SG 11201908016WA SG 11201908016W A SG11201908016W A SG 11201908016WA SG 11201908016W A SG11201908016W A SG 11201908016WA SG 11201908016W A SG11201908016W A SG 11201908016WA
Authority
SG
Singapore
Prior art keywords
substrate
magnetic
magnetic disk
film
disks
Prior art date
Application number
SG11201908016WA
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 SG11201908016WA publication Critical patent/SG11201908016WA/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
    • G11B5/73921—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

Landscapes

  • 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)
SG11201908016WA 2017-06-30 2018-07-02 Substrate for magnetic disks, and magnetic disk SG11201908016WA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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

Publications (1)

Publication Number Publication Date
SG11201908016WA true SG11201908016WA (en) 2019-09-27

Family

ID=64742939

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201908016WA SG11201908016WA (en) 2017-06-30 2018-07-02 Substrate for magnetic disks, and magnetic disk

Country Status (7)

Country Link
US (3) US11152026B2 (ja)
JP (4) JP6467118B1 (ja)
CN (2) CN110431627B (ja)
MY (1) MY196313A (ja)
PH (1) PH12019502156A1 (ja)
SG (1) SG11201908016WA (ja)
WO (1) WO2019004484A1 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY192572A (en) * 2017-03-31 2022-08-29 Hoya Corp Non-magnetic substrate for magnetic disk, and magnetic disk
MY196313A (en) * 2017-06-30 2023-03-24 Hoya Corp 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
CN112513985B (zh) * 2018-08-07 2023-07-28 Hoya株式会社 磁盘用基板以及磁盘
JP7077248B2 (ja) * 2019-02-07 2022-05-30 株式会社東芝 ディスク装置
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

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5939350B2 (ja) 1978-09-26 1984-09-22 株式会社ダイフク 搬送台車駆動装置
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
JP3394108B2 (ja) * 1995-02-03 2003-04-07 株式会社日立製作所 磁気記憶装置及び多層磁性層磁気記録媒体
US5759681A (en) 1995-02-03 1998-06-02 Hitachi, Ltd. Magnetic recording medium and magnetic recording system using the same
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
JPH10334445A (ja) * 1997-06-02 1998-12-18 Kobe Steel Ltd 磁気ディスク用基板
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
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
US7573674B1 (en) * 2004-12-23 2009-08-11 Maxtor Corporation Storage disk having increased damping characteristics in a disk drive
US7564181B2 (en) * 2005-04-08 2009-07-21 Eastman Kodak Company Performance enhancement layer for OLED devices
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
WO2007072835A1 (en) * 2005-12-19 2007-06-28 Showa Denko K.K. Magnetic disk substrate and magnetic disk thereof
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
JP5029952B2 (ja) 2007-09-06 2012-09-19 富士電機株式会社 ガラス基板およびその製造方法、ならびに当該ガラス基板を用いた磁気ディスク
WO2009096217A1 (ja) * 2008-01-29 2009-08-06 Konica Minolta Opto, Inc. 磁気記録媒体用基板の製造方法、及び磁気記録媒体
JP2009230811A (ja) * 2008-03-24 2009-10-08 Konica Minolta Opto Inc 金型部材
JP4729114B2 (ja) 2009-03-18 2011-07-20 株式会社東芝 磁気記録媒体の製造方法
KR101609734B1 (ko) * 2010-07-09 2016-04-06 마이크로 모우션, 인코포레이티드 개선된 진동계 케이스를 포함한 진동계
JP5687893B2 (ja) * 2010-12-17 2015-03-25 Hoya株式会社 記録媒体用ガラス基板
JP5029777B1 (ja) * 2011-11-22 2012-09-19 旭硝子株式会社 磁気記録媒体用ガラス基板、および該磁気記録媒体用ガラス基板を用いた磁気記録媒体
WO2013146089A1 (ja) 2012-03-30 2013-10-03 Hoya株式会社 磁気ディスク用ガラス基板、磁気ディスク、磁気ディスクドライブ装置
JP6014385B2 (ja) 2012-05-14 2016-10-25 昭和電工株式会社 磁気記録媒体及び磁気記録再生装置
WO2014208717A1 (ja) * 2013-06-27 2014-12-31 Hoya株式会社 円板状ガラス基板、磁気ディスク用ガラス基板、磁気ディスク用ガラス基板の製造方法、磁気ディスク
JP5860195B1 (ja) * 2014-03-31 2016-02-16 Hoya株式会社 磁気ディスク用ガラス基板
JP5915718B1 (ja) * 2014-11-07 2016-05-11 旭硝子株式会社 磁気ディスク用ガラス基板及び磁気ディスク
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
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
MY192572A (en) * 2017-03-31 2022-08-29 Hoya Corp Non-magnetic substrate for magnetic disk, and magnetic disk
MY196313A (en) * 2017-06-30 2023-03-24 Hoya Corp Substrate For Magnetic Disks, and Magnetic Disk

Also Published As

Publication number Publication date
JPWO2019004484A1 (ja) 2019-06-27
US11694718B2 (en) 2023-07-04
US11152026B2 (en) 2021-10-19
JP7092689B2 (ja) 2022-06-28
CN113362863B (zh) 2022-09-30
CN113362863A (zh) 2021-09-07
JP2019053813A (ja) 2019-04-04
PH12019502156A1 (en) 2020-07-06
US20200027481A1 (en) 2020-01-23
US20210407544A1 (en) 2021-12-30
JP2022120158A (ja) 2022-08-17
JP6467118B1 (ja) 2019-02-06
JP2023133503A (ja) 2023-09-22
CN110431627A (zh) 2019-11-08
US20230298623A1 (en) 2023-09-21
WO2019004484A1 (ja) 2019-01-03
JP7326542B2 (ja) 2023-08-15
CN110431627B (zh) 2021-07-02
MY196313A (en) 2023-03-24

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