SG11201506619TA - Glass substrate for magnetic disk and magnetic disk - Google Patents

Glass substrate for magnetic disk and magnetic disk

Info

Publication number
SG11201506619TA
SG11201506619TA SG11201506619TA SG11201506619TA SG11201506619TA SG 11201506619T A SG11201506619T A SG 11201506619TA SG 11201506619T A SG11201506619T A SG 11201506619TA SG 11201506619T A SG11201506619T A SG 11201506619TA SG 11201506619T A SG11201506619T A SG 11201506619TA
Authority
SG
Singapore
Prior art keywords
magnetic disk
glass substrate
disk
magnetic
glass
Prior art date
Application number
SG11201506619TA
Inventor
Masanori Tamaki
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 SG11201506619TA publication Critical patent/SG11201506619TA/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
    • 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
SG11201506619TA 2013-02-22 2014-02-24 Glass substrate for magnetic disk and magnetic disk SG11201506619TA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013033719 2013-02-22
PCT/JP2014/054384 WO2014129633A1 (en) 2013-02-22 2014-02-24 Glass substrate for magnetic disk, and magnetic disk

Publications (1)

Publication Number Publication Date
SG11201506619TA true SG11201506619TA (en) 2015-09-29

Family

ID=51391409

Family Applications (2)

Application Number Title Priority Date Filing Date
SG11201506619TA SG11201506619TA (en) 2013-02-22 2014-02-24 Glass substrate for magnetic disk and magnetic disk
SG10201608631VA SG10201608631VA (en) 2013-02-22 2014-02-24 Glass substrate for magnetic disk and magnetic disk

Family Applications After (1)

Application Number Title Priority Date Filing Date
SG10201608631VA SG10201608631VA (en) 2013-02-22 2014-02-24 Glass substrate for magnetic disk and magnetic disk

Country Status (6)

Country Link
US (2) US9595284B2 (en)
JP (2) JP5703430B2 (en)
CN (2) CN105009212B (en)
MY (2) MY172325A (en)
SG (2) SG11201506619TA (en)
WO (1) WO2014129633A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG10201605879PA (en) * 2012-09-28 2016-08-30 Hoya Corp Magnetic-disk glass substrate and magnetic disk
WO2014104368A1 (en) * 2012-12-29 2014-07-03 Hoya株式会社 Glass substrate for magnetic disk and magnetic disk
JP5703430B2 (en) * 2013-02-22 2015-04-22 Hoya株式会社 Glass substrate for magnetic disk, magnetic disk
SG10201608638XA (en) * 2013-03-01 2016-12-29 Hoya Corp Glass substrate for magnetic disk and magnetic disk
SG11201606688RA (en) * 2014-03-31 2016-09-29 Hoya Corp Magnetic-disk glass substrate
CN107615381B (en) * 2015-09-30 2019-09-13 Hoya株式会社 The manufacturing method of glass substrate for disc, disk, glass substrate intermediate and glass substrate for disc
JP5939350B1 (en) * 2015-12-28 2016-06-22 旭硝子株式会社 Glass substrate for magnetic recording medium, magnetic recording medium
CN108292510B (en) * 2015-12-28 2019-11-01 Hoya株式会社 The manufacturing method of the glass substrate of circular glass plate and manufacturing method, annular shape and the manufacturing method of glass substrate for disc
WO2019066086A1 (en) * 2017-09-29 2019-04-04 Hoya株式会社 Glass spacer and hard disc drive device
JP6895918B2 (en) * 2018-03-23 2021-06-30 古河電気工業株式会社 Manufacturing method of aluminum alloy substrate for magnetic disk, disk drive, and aluminum alloy substrate for magnetic disk
JP7459725B2 (en) 2020-08-27 2024-04-02 株式会社レゾナック Dummy board and its manufacturing method
US11270724B1 (en) * 2021-03-04 2022-03-08 Western Digital Technologies, Inc. Glass substrates for heat assisted magnetic recording (HAMR) and methods and apparatus for use with the glass substrates

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3140702B2 (en) * 1996-12-20 2001-03-05 日本碍子株式会社 Crystallized glass for magnetic disk substrate, magnetic disk substrate and magnetic disk
US7071132B2 (en) * 2000-07-07 2006-07-04 Kabushiki Kaisha Ohara Low expansion transparent glass ceramics
EP1528563A4 (en) * 2002-08-06 2008-05-28 Matsushita Electric Ind Co Ltd Optical disk medium and hub
JP4250385B2 (en) * 2002-08-09 2009-04-08 Ｈｏｙａ株式会社 Manufacturing method of glass substrate for information recording medium and grinding apparatus for glass substrate for information recording medium
US7891212B2 (en) * 2004-03-25 2011-02-22 Hoya Corporation Magnetic disk glass substrate
JP2006099936A (en) * 2004-08-30 2006-04-13 Hoya Corp Method for manufacturing magnetic disk glass substrate, method for manufacturing magnetic disk, and cylindrical glass base material for glass substrate
JP2007229912A (en) * 2006-02-02 2007-09-13 Hoya Corp Method of manufacturing glass substrate for magnetic disk, glass substrate for magnetic disk, and method of manufacturing magnetic disk
WO2008041493A1 (en) * 2006-09-29 2008-04-10 Hoya Corporation Method for manufacturing glass substrate for magnetic disc, magnetic disc manufacturing method, and apparatus for polishing glass substrate for magnetic disc
JP5344806B2 (en) * 2006-09-29 2013-11-20 Ｈｏｙａ株式会社 Method for manufacturing glass substrate for magnetic disk, glass substrate polishing apparatus for magnetic disk, and method for manufacturing magnetic disk
CN102708877B (en) * 2007-02-20 2015-07-01 Hoya株式会社 Magnetic disk substrate, magnetic disk, and magnetic disk device
JP2008217918A (en) 2007-03-06 2008-09-18 Konica Minolta Opto Inc Glass substrate for magnetic recording medium, and magnetic recording medium
JP4952311B2 (en) * 2007-03-14 2012-06-13 コニカミノルタオプト株式会社 Glass substrate for information recording medium and magnetic recording medium
WO2008146522A1 (en) * 2007-05-30 2008-12-04 Toyo Kohan Co., Ltd. Method of surface finish for glass substrate for magnetic disk and glass substrate for magnetic disk
JP4748115B2 (en) * 2007-06-12 2011-08-17 コニカミノルタオプト株式会社 Glass substrate for magnetic recording medium and magnetic recording medium
WO2009084534A1 (en) 2007-12-28 2009-07-09 Hoya Corporation Magnetic disk glass substrate, magnetic disk, and magnetic disk manufacturing method
WO2010041537A1 (en) * 2008-10-08 2010-04-15 コニカミノルタオプト株式会社 Process for producing glass substrate, and process for producing magnetic recording medium
WO2011096310A1 (en) * 2010-02-03 2011-08-11 コニカミノルタオプト株式会社 Glass substrate for information recording medium, method for producing glass substrate for information recording medium, and information recording medium
JP2011198428A (en) * 2010-03-23 2011-10-06 Hoya Corp Glass substrate for magnetic disk and evaluation method thereof
JP5844610B2 (en) * 2010-11-02 2016-01-20 Hoya株式会社 Manufacturing method of glass substrate for magnetic disk
JP5737043B2 (en) 2011-07-29 2015-06-17 旭硝子株式会社 Substrate glass and glass substrate
JP5126401B1 (en) * 2011-09-28 2013-01-23 旭硝子株式会社 Glass substrate for magnetic recording media
SG10201605879PA (en) * 2012-09-28 2016-08-30 Hoya Corp Magnetic-disk glass substrate and magnetic disk
CN107256712B (en) * 2012-09-28 2020-04-14 Hoya株式会社 Glass substrate for magnetic disk, method for producing same, magnetic disk, and annular glass substrate
WO2014104368A1 (en) * 2012-12-29 2014-07-03 Hoya株式会社 Glass substrate for magnetic disk and magnetic disk
JP5703430B2 (en) * 2013-02-22 2015-04-22 Hoya株式会社 Glass substrate for magnetic disk, magnetic disk
SG10201608638XA (en) * 2013-03-01 2016-12-29 Hoya Corp Glass substrate for magnetic disk and magnetic disk

Also Published As

Publication number Publication date
JP2015135720A (en) 2015-07-27
JP6294843B2 (en) 2018-03-14
CN108847256B (en) 2020-04-03
JPWO2014129633A1 (en) 2017-02-02
US9595284B2 (en) 2017-03-14
WO2014129633A1 (en) 2014-08-28
MY172325A (en) 2019-11-21
US20170169848A1 (en) 2017-06-15
SG10201608631VA (en) 2016-12-29
MY166439A (en) 2018-06-27
US10431252B2 (en) 2019-10-01
CN105009212A (en) 2015-10-28
US20150371673A1 (en) 2015-12-24
JP5703430B2 (en) 2015-04-22
CN105009212B (en) 2018-07-20
CN108847256A (en) 2018-11-20

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