SG10201608638XA - Glass substrate for magnetic disk and magnetic disk - Google Patents

Glass substrate for magnetic disk and magnetic disk

Info

Publication number
SG10201608638XA
SG10201608638XA SG10201608638XA SG10201608638XA SG10201608638XA SG 10201608638X A SG10201608638X A SG 10201608638XA SG 10201608638X A SG10201608638X A SG 10201608638XA SG 10201608638X A SG10201608638X A SG 10201608638XA SG 10201608638X A SG10201608638X A SG 10201608638XA
Authority
SG
Singapore
Prior art keywords
magnetic disk
glass substrate
disk
magnetic
glass
Prior art date
Application number
SG10201608638XA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=51428406&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SG10201608638X(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hoya Corp filed Critical Hoya Corp
Publication of SG10201608638XA publication Critical patent/SG10201608638XA/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
    • 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
SG10201608638XA 2013-03-01 2014-02-28 Glass substrate for magnetic disk and magnetic disk SG10201608638XA (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013041303 2013-03-01

Publications (1)

Publication Number Publication Date
SG10201608638XA true SG10201608638XA (en) 2016-12-29

Family

ID=51428406

Family Applications (2)

Application Number Title Priority Date Filing Date
SG10201608638XA SG10201608638XA (en) 2013-03-01 2014-02-28 Glass substrate for magnetic disk and magnetic disk
SG11201506622TA SG11201506622TA (en) 2013-03-01 2014-02-28 Glass substrate for magnetic disk and magnetic disk

Family Applications After (1)

Application Number Title Priority Date Filing Date
SG11201506622TA SG11201506622TA (en) 2013-03-01 2014-02-28 Glass substrate for magnetic disk and magnetic disk

Country Status (6)

Country Link
US (2) US9595286B2 (en)
JP (2) JP5763852B2 (en)
CN (2) CN108847257B (en)
MY (1) MY165594A (en)
SG (2) SG10201608638XA (en)
WO (1) WO2014133148A1 (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
JP6481509B2 (en) * 2015-05-25 2019-03-13 Ａｇｃ株式会社 Glass for magnetic recording medium substrate, magnetic recording medium substrate, and magnetic recording medium
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
JP5983897B1 (en) * 2015-11-26 2016-09-06 旭硝子株式会社 Glass substrate for magnetic disk and magnetic disk
JP6008060B1 (en) * 2015-12-22 2016-10-19 旭硝子株式会社 Glass substrate for magnetic recording medium, magnetic recording medium, method for manufacturing glass substrate for magnetic recording medium, and glass substrate manufacturing apparatus for magnetic recording medium
JP6574537B2 (en) 2017-03-31 2019-09-11 Hoya株式会社 Non-magnetic substrate for magnetic disk and magnetic disk
US20210061699A1 (en) * 2018-01-31 2021-03-04 Hoya Corporation Method for manufacturing disk-shaped glass blank and method for manufacturing glass substrate for magnetic disk
US11884582B2 (en) 2019-07-31 2024-01-30 Hoya Corporation Method for manufacturing annular glass plate, method for manufacturing glass substrate for magnetic disk, and method for manufacturing magnetic disk

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6595028B1 (en) * 1999-09-30 2003-07-22 Hoya Corporation Chemical reinforced glass substrate having desirable edge profile and method of manufacturing the same
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
EP1738224A1 (en) * 2004-04-22 2007-01-03 Asahi Glass Company, Limited Low-expansion glass substrate for a reflective mask and reflective mask
CN1993736A (en) * 2004-08-11 2007-07-04 昭和电工株式会社 Silicon substrate for magnetic recording medium, manufacturing method thereof, and magnetic recording medium
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
CN101611444B (en) * 2007-02-20 2012-10-10 Hoya株式会社 Magnetic disc substrate, magnetic disc, and magnetic disc device
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
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
JP2011198429A (en) * 2010-03-23 2011-10-06 Hoya Corp Glass substrate for magnetic disk and evaluation method thereof
JP5788643B2 (en) * 2010-05-21 2015-10-07 株式会社オハラ Glass substrate
JP5844610B2 (en) * 2010-11-02 2016-01-20 Hoya株式会社 Manufacturing method of glass substrate for magnetic disk
CN107032638B (en) * 2011-08-29 2020-07-03 Ａｇｃ株式会社 Protective glass plate of display
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

Also Published As

Publication number Publication date
US9595286B2 (en) 2017-03-14
MY165594A (en) 2018-04-16
CN105009213A (en) 2015-10-28
CN105009213B (en) 2018-06-29
CN108847257B (en) 2021-02-09
WO2014133148A1 (en) 2014-09-04
JPWO2014133148A1 (en) 2017-02-09
JP5763852B2 (en) 2015-08-12
CN108847257A (en) 2018-11-20
US20160005431A1 (en) 2016-01-07
JP2015181085A (en) 2015-10-15
US10535366B2 (en) 2020-01-14
JP6181107B2 (en) 2017-08-16
US20170169849A1 (en) 2017-06-15
SG11201506622TA (en) 2015-09-29

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