SG11201604583RA - Magnetic-disk substrate, magnetic disk, and magnetic-disk drive device - Google Patents

Magnetic-disk substrate, magnetic disk, and magnetic-disk drive device

Info

Publication number
SG11201604583RA
SG11201604583RA SG11201604583RA SG11201604583RA SG11201604583RA SG 11201604583R A SG11201604583R A SG 11201604583RA SG 11201604583R A SG11201604583R A SG 11201604583RA SG 11201604583R A SG11201604583R A SG 11201604583RA SG 11201604583R A SG11201604583R A SG 11201604583RA
Authority
SG
Singapore
Prior art keywords
magnetic
disk
drive device
substrate
disk drive
Prior art date
Application number
SG11201604583RA
Other languages
English (en)
Inventor
Takashi Maeda
Takumi Kuhara
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 SG11201604583RA publication Critical patent/SG11201604583RA/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
    • G11B5/7315—
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/4806—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
    • 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
    • G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
SG11201604583RA 2013-12-26 2014-12-26 Magnetic-disk substrate, magnetic disk, and magnetic-disk drive device SG11201604583RA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013270031 2013-12-26
PCT/JP2014/084703 WO2015099178A1 (ja) 2013-12-26 2014-12-26 磁気ディスク用基板、磁気ディスク、及び磁気ディスクドライブ装置

Publications (1)

Publication Number Publication Date
SG11201604583RA true SG11201604583RA (en) 2016-07-28

Family

ID=53479016

Family Applications (2)

Application Number Title Priority Date Filing Date
SG11201604583RA SG11201604583RA (en) 2013-12-26 2014-12-26 Magnetic-disk substrate, magnetic disk, and magnetic-disk drive device
SG10201702021UA SG10201702021UA (en) 2013-12-26 2014-12-26 Magnetic-disk substrate, magnetic disk, and magnetic-disk drive device

Family Applications After (1)

Application Number Title Priority Date Filing Date
SG10201702021UA SG10201702021UA (en) 2013-12-26 2014-12-26 Magnetic-disk substrate, magnetic disk, and magnetic-disk drive device

Country Status (6)

Country Link
US (2) US9711175B2 (zh)
JP (2) JP5903531B2 (zh)
CN (2) CN105849806B (zh)
MY (1) MY179223A (zh)
SG (2) SG11201604583RA (zh)
WO (1) WO2015099178A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6895847B2 (ja) * 2017-08-24 2021-06-30 東洋鋼鈑株式会社 磁気ディスク用基板およびその製造方法
US10872635B2 (en) * 2017-08-31 2020-12-22 Hoya Corporation Spacer and hard disk drive apparatus
DE102018112805A1 (de) * 2018-05-29 2019-12-05 Klingelnberg Gmbh Verfahren zur Analyse von Oberflächenwelligkeiten

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08279134A (ja) 1995-04-04 1996-10-22 Kao Corp 磁気記録媒体
JP2001167430A (ja) * 1999-12-08 2001-06-22 Asahi Techno Glass Corp 磁気ディスク用基板およびその製造方法
WO2002076675A1 (fr) 2001-03-27 2002-10-03 Nippon Sheet Glass Co., Ltd. Substrat pour support d'enregistrement d'informations et procede de production dudit substrat, support d'enregistrement d'informations et feuille de verre ebauche
JP4234991B2 (ja) * 2002-12-26 2009-03-04 Ｈｏｙａ株式会社 情報記録媒体用ガラス基板の製造方法及びその製造方法によって製造される情報記録媒体用ガラス基板
JP4023408B2 (ja) * 2003-02-04 2007-12-19 富士電機デバイステクノロジー株式会社 垂直磁気記録媒体用基板、垂直磁気記録媒体及びそれらの製造方法
JP4707311B2 (ja) 2003-08-08 2011-06-22 花王株式会社 磁気ディスク用基板
CN1993298A (zh) * 2004-08-27 2007-07-04 昭和电工株式会社 制造用于磁记录介质的玻璃基底的方法及通过该方法制得的用于磁记录介质的玻璃基底
JP2006209854A (ja) 2005-01-27 2006-08-10 Fuji Photo Film Co Ltd 磁気記録媒体および磁気記録再生方法
CN1880254A (zh) 2005-06-03 2006-12-20 Hoya株式会社 磁盘用玻璃基板的制造方法以及磁盘的制造方法
JP5371183B2 (ja) * 2006-03-24 2013-12-18 Ｈｏｙａ株式会社 磁気ディスク用ガラス基板の製造方法及び磁気ディスクの製造方法
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
MY193839A (en) 2007-02-20 2022-10-28 Hoya Corp Magnetic disk substrate with offset portion on a main surface within a range of 92.0 to 97.0% in a radial direction from a center, magnetic disk with substrate and magnetic disk device
JP2008293552A (ja) * 2007-05-22 2008-12-04 Fujitsu Ltd 基板、磁気記録媒体及びその製造方法、並びに磁気記憶装置
WO2009084534A1 (ja) 2007-12-28 2009-07-09 Hoya Corporation 磁気ディスク用ガラス基板、磁気ディスク、及び磁気ディスクの製造方法
US8895165B2 (en) * 2008-09-10 2014-11-25 Hoya Corporation Method of manufacturing a glass substrate for a magnetic disk, glass substrate for a magnetic disk, method of manufacturing a magnetic disk, and magnetic disk
US8785010B2 (en) * 2008-09-30 2014-07-22 Hoya Corporation Glass substrate for a magnetic disk and magnetic disk
US9135939B2 (en) * 2009-09-18 2015-09-15 Hoya Corporation Glass substrate for information recording medium, information recording medium and method of manufacturing glass substrate for information recording medium
JP5428793B2 (ja) * 2009-11-17 2014-02-26 旭硝子株式会社 ガラス基板研磨方法および磁気記録媒体用ガラス基板の製造方法
US8394516B2 (en) 2010-10-29 2013-03-12 Hoya Corporation Glass substrate for magnetic recording medium and magnetic recording medium
JP5975654B2 (ja) * 2011-01-27 2016-08-23 Hoya株式会社 磁気ディスク用ガラス基板の製造方法及び磁気ディスクの製造方法
JP4977795B1 (ja) 2011-10-14 2012-07-18 旭硝子株式会社 磁気記録媒体用ガラス基板、及び、該磁気記録媒体用ガラス基板を用いた磁気記録媒体
JP5826000B2 (ja) 2011-11-30 2015-12-02 昭和電工株式会社 磁気記録媒体用基板、磁気記録媒体、磁気記録媒体用基板の製造方法及び表面検査方法

Also Published As

Publication number Publication date
CN107785034B (zh) 2020-03-27
JP6374426B2 (ja) 2018-08-15
US9865293B2 (en) 2018-01-09
JPWO2015099178A1 (ja) 2017-03-23
CN105849806A (zh) 2016-08-10
JP5903531B2 (ja) 2016-04-13
US9711175B2 (en) 2017-07-18
CN105849806B (zh) 2017-11-21
US20160329073A1 (en) 2016-11-10
WO2015099178A1 (ja) 2015-07-02
MY179223A (en) 2020-11-02
US20170256278A1 (en) 2017-09-07
JP2016110689A (ja) 2016-06-20
SG10201702021UA (en) 2017-05-30
CN107785034A (zh) 2018-03-09

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