MY171392A - Magnetic-disk glass substrate and magnetic disk - Google Patents

Magnetic-disk glass substrate and magnetic disk

Info

Publication number
MY171392A
MY171392A MYPI2015700584A MYPI2015700584A MY171392A MY 171392 A MY171392 A MY 171392A MY PI2015700584 A MYPI2015700584 A MY PI2015700584A MY PI2015700584 A MYPI2015700584 A MY PI2015700584A MY 171392 A MY171392 A MY 171392A
Authority
MY
Malaysia
Prior art keywords
magnetic
glass substrate
disk
side wall
circumferential end
Prior art date
Application number
MYPI2015700584A
Other languages
English (en)
Inventor
Takeyoshi Takahashi
Masaaki Ueda
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 MY171392A publication Critical patent/MY171392A/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
    • G11B5/74—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
    • G11B5/62—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
MYPI2015700584A 2012-09-28 2013-09-30 Magnetic-disk glass substrate and magnetic disk MY171392A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012218706 2012-09-28

Publications (1)

Publication Number Publication Date
MY171392A true MY171392A (en) 2019-10-10

Family

ID=50388536

Family Applications (2)

Application Number Title Priority Date Filing Date
MYPI2015700584A MY171392A (en) 2012-09-28 2013-09-30 Magnetic-disk glass substrate and magnetic disk
MYPI2019000028A MY198411A (en) 2012-09-28 2013-09-30 Magnetic-Disk Glass Substrate and Magnetic Disk

Family Applications After (1)

Application Number Title Priority Date Filing Date
MYPI2019000028A MY198411A (en) 2012-09-28 2013-09-30 Magnetic-Disk Glass Substrate and Magnetic Disk

Country Status (6)

Country Link
US (3) US9583128B2 (https=)
JP (2) JP5574392B1 (https=)
CN (2) CN106098085B (https=)
MY (2) MY171392A (https=)
SG (2) SG11201501457VA (https=)
WO (1) WO2014051152A1 (https=)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US9595283B2 (en) * 2012-12-29 2017-03-14 Hoya Corporation Glass substrate for magnetic disk and magnetic disk
SG10201608631VA (en) * 2013-02-22 2016-12-29 Hoya Corp 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
WO2015152316A1 (ja) 2014-03-31 2015-10-08 Hoya株式会社 磁気ディスク用ガラス基板
JP6020754B1 (ja) * 2015-12-25 2016-11-02 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
WO2020021705A1 (ja) 2018-07-27 2020-01-30 Hoya株式会社 ガラス基板の製造方法及び磁気ディスクの製造方法
MY208527A (en) 2018-08-07 2025-05-14 Hoya Corp Substrate for magnetic disk and magnetic disk
US20210090601A1 (en) 2019-09-25 2021-03-25 Western Digital Technologies, Inc. Magnetic recording apparatus comprising disk with reduced thickness and reduced disk flatness
JP7467759B2 (ja) * 2021-02-24 2024-04-15 Hoya株式会社 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
US11664050B2 (en) 2021-10-05 2023-05-30 Western Digital Technologies, Inc. Tuned edge profile of a disk substrate for use in magnetic recording media

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19850744C1 (de) * 1998-11-04 2000-10-05 Schott Glas Verwendung von Gläsern zur Herstellung von Festplattensubstraten
JP2002100031A (ja) * 2000-09-26 2002-04-05 Hoya Corp 磁気記録媒体用ガラス基板、及び磁気記録媒体
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
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
JP2006092722A (ja) * 2004-08-27 2006-04-06 Showa Denko Kk 磁気ディスク用基板および磁気ディスクの製造方法
JP2006099945A (ja) * 2004-08-30 2006-04-13 Showa Denko Kk 磁気記録媒体用ガラス基板および磁気記録媒体
CN101010734A (zh) 2004-08-30 2007-08-01 昭和电工株式会社 用于磁记录介质的玻璃基底以及磁记录介质
JP4545714B2 (ja) * 2005-07-08 2010-09-15 昭和電工株式会社 磁気記録媒体並びに磁気記録再生装置
JP2008094982A (ja) * 2006-10-12 2008-04-24 Kao Corp メモリーハードディスク基板用研磨液組成物
MY163763A (en) * 2007-02-20 2017-10-31 Hoya Corp Magnetic disk substrate, magnetic disk, and magnetic disk device
CN101611444B (zh) * 2007-02-20 2012-10-10 Hoya株式会社 磁盘用基板、磁盘以及磁盘装置
JP4952311B2 (ja) 2007-03-14 2012-06-13 コニカミノルタオプト株式会社 情報記録媒体用ガラス基板及び磁気記録媒体
JP4860580B2 (ja) * 2007-09-07 2012-01-25 Ｈｏｙａ株式会社 磁気ディスク用基板及び磁気ディスク
JP2009134802A (ja) 2007-11-29 2009-06-18 Furukawa Electric Co Ltd:The 磁気ディスク用ガラス基板および磁気ディスク装置
JP4994213B2 (ja) * 2007-12-21 2012-08-08 Ｈｏｙａ株式会社 磁気ディスク用ガラス基板、磁気ディスクおよび磁気ディスク用ガラス基板の製造方法
JP5361185B2 (ja) * 2007-12-25 2013-12-04 Ｈｏｙａ株式会社 磁気ディスク用ガラス基板の製造方法
JP2010257562A (ja) 2009-03-30 2010-11-11 Hoya Corp 磁気ディスク用基板及びその製造方法
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
US9595283B2 (en) * 2012-12-29 2017-03-14 Hoya Corporation Glass substrate for magnetic disk and magnetic disk
SG10201608631VA (en) * 2013-02-22 2016-12-29 Hoya Corp 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

Also Published As

Publication number Publication date
SG11201501457VA (en) 2015-04-29
US10290315B2 (en) 2019-05-14
MY198411A (en) 2023-08-28
US20190221233A1 (en) 2019-07-18
US9583128B2 (en) 2017-02-28
CN104603875A (zh) 2015-05-06
JP6089001B2 (ja) 2017-03-01
JPWO2014051152A1 (ja) 2016-08-25
US20150262604A1 (en) 2015-09-17
US20170140785A1 (en) 2017-05-18
JP2014160539A (ja) 2014-09-04
CN104603875B (zh) 2016-07-06
WO2014051152A1 (ja) 2014-04-03
JP5574392B1 (ja) 2014-08-20
US11094344B2 (en) 2021-08-17
CN106098085A (zh) 2016-11-09
CN106098085B (zh) 2019-07-02
SG10201605879PA (en) 2016-08-30

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