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SG10201605515PA - Glass for magnetic recording medium substrate and usage thereof - Google Patents

Glass for magnetic recording medium substrate and usage thereof

Info

Publication number
SG10201605515PA
SG10201605515PA SG10201605515PA SG10201605515PA SG10201605515PA SG 10201605515P A SG10201605515P A SG 10201605515PA SG 10201605515P A SG10201605515P A SG 10201605515PA SG 10201605515P A SG10201605515P A SG 10201605515PA SG 10201605515P A SG10201605515P A SG 10201605515PA
Authority
SG
Singapore
Prior art keywords
usage
glass
recording medium
magnetic recording
medium substrate
Prior art date
Application number
SG10201605515PA
Inventor
Naomi Matsumoto
Kazuaki Hashimoto
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 SG10201605515PA publication Critical patent/SG10201605515PA/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00Glass compositions
    • C03C3/04Glass compositions containing silica
    • C03C3/076Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/06Surface treatment of glass, not in the form of fibres or filaments, by coating with metals
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C21/00Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C21/00Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • C03C21/001Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
    • C03C21/002Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00Glass compositions
    • C03C3/04Glass compositions containing silica
    • C03C3/076Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • C03C3/087Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B13/00Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
    • G11B13/04Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/73Base 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
    • G11B5/739Magnetic recording media substrates
    • G11B5/73911Inorganic substrates
    • G11B5/73921Glass or ceramic substrates
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8404Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002Special dispositions or recording techniques
    • G11B2005/0005Arrangements, methods or circuits
    • G11B2005/0021Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Glass Compositions (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
SG10201605515PA 2012-05-16 2013-05-09 Glass for magnetic recording medium substrate and usage thereof SG10201605515PA (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201261647644P 2012-05-16 2012-05-16

Publications (1)

Publication Number Publication Date
SG10201605515PA true SG10201605515PA (en) 2016-09-29

Family

ID=49583653

Family Applications (2)

Application Number Title Priority Date Filing Date
SG11201407592YA SG11201407592YA (en) 2012-05-16 2013-05-09 Glass for magnetic recording medium substrate and usage thereof
SG10201605515PA SG10201605515PA (en) 2012-05-16 2013-05-09 Glass for magnetic recording medium substrate and usage thereof

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SG11201407592YA SG11201407592YA (en) 2012-05-16 2013-05-09 Glass for magnetic recording medium substrate and usage thereof

Country Status (6)

Country Link
US (2) US8824248B2 (en)
JP (1) JP6147735B2 (en)
CN (1) CN104303231A (en)
MY (1) MY166878A (en)
SG (2) SG11201407592YA (en)
WO (1) WO2013172247A1 (en)

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JP5724779B2 (en) * 2011-09-13 2015-05-27 旭硝子株式会社 Method for measuring strength of chemically strengthened glass, method for reproducing cracks in chemically strengthened glass, and method for producing chemically strengthened glass
JPWO2013108790A1 (en) * 2012-01-20 2015-05-11 旭硝子株式会社 Glass substrate for Cu-In-Ga-Se solar cell and solar cell using the same
US9359251B2 (en) 2012-02-29 2016-06-07 Corning Incorporated Ion exchanged glasses via non-error function compressive stress profiles
US11079309B2 (en) 2013-07-26 2021-08-03 Corning Incorporated Strengthened glass articles having improved survivability
JP6131154B2 (en) * 2013-09-11 2017-05-17 Hoya株式会社 Glass for magnetic recording medium substrate and magnetic recording medium substrate
US9517968B2 (en) 2014-02-24 2016-12-13 Corning Incorporated Strengthened glass with deep depth of compression
DE102014203567B4 (en) * 2014-02-27 2018-04-26 Schott Ag Float method for producing a float glass pane
TWI697403B (en) 2014-06-19 2020-07-01 美商康寧公司 Glasses having non-frangible stress profiles
KR20190090090A (en) 2014-10-08 2019-07-31 코닝 인코포레이티드 Glasses and glass ceramics including a metal oxide concentration gradient
US10150698B2 (en) 2014-10-31 2018-12-11 Corning Incorporated Strengthened glass with ultra deep depth of compression
CN115572078A (en) 2014-11-04 2023-01-06 康宁股份有限公司 Deep non-brittle stress curve and method of making same
US10579106B2 (en) 2015-07-21 2020-03-03 Corning Incorporated Glass articles exhibiting improved fracture performance
US11613103B2 (en) 2015-07-21 2023-03-28 Corning Incorporated Glass articles exhibiting improved fracture performance
WO2017100646A1 (en) 2015-12-11 2017-06-15 Corning Incorporated Fusion-formable glass-based articles including a metal oxide concentration gradient
KR20190104435A (en) 2016-04-08 2019-09-09 코닝 인코포레이티드 Glass-based articles including a metal oxide concentration gradient
KR20200091500A (en) 2016-04-08 2020-07-30 코닝 인코포레이티드 Glass-based articles including a stress profile comprising two regions, and methods of making
JP6574740B2 (en) 2016-07-08 2019-09-11 昭和電工株式会社 Magnetic recording medium substrate and hard disk drive
JP6694074B2 (en) * 2016-11-14 2020-05-13 Hoya株式会社 Glass for magnetic recording medium substrate, magnetic recording medium substrate, magnetic recording medium and glass spacer for magnetic recording / reproducing apparatus
JP6832179B2 (en) 2017-02-03 2021-02-24 昭和電工株式会社 Magnetic recording medium board and hard disk drive
TW201920027A (en) * 2017-09-21 2019-06-01 美商康寧公司 Transparent ion-exchangeable silicate glasses with high fracture toughness
US11319243B2 (en) 2018-01-17 2022-05-03 Corning Incorporated High refractive index optical borate glass
CN116798456A (en) * 2018-08-07 2023-09-22 Hoya株式会社 Magnetic disk substrate and magnetic disk
US11688424B2 (en) * 2019-07-22 2023-06-27 Hoya Corporation Glass for magnetic recording medium substrate, magnetic recording medium substrate, magnetic recording medium, glass spacer for magnetic recording and reproducing apparatus, and magnetic recording and reproducing apparatus
US11999652B2 (en) 2019-12-13 2024-06-04 Hoya Corporation Glass for magnetic recording medium substrate or for glass spacer to be used in magnetic recording/reproducing device, magnetic recording medium substrate, magnetic recording medium, glass spacer to be used in magnetic recording/reproducing device, and magnetic recording/reproducing device
US12122714B2 (en) 2020-12-10 2024-10-22 Corning Incorporated Glass with unique fracture behavior for vehicle windshield
US11951713B2 (en) 2020-12-10 2024-04-09 Corning Incorporated Glass with unique fracture behavior for vehicle windshield
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
US20240158281A1 (en) * 2021-03-05 2024-05-16 Hoya Corporation Glass for magnetic recording medium substrate or for glass spacer to be used in magnetic recording/reproducing device, magnetic recording medium substrate, magnetic recording medium, glass spacer to be used in magnetic recording/reproducing device, and magnetic recording/reproducing device
CN113402165B (en) * 2021-07-28 2022-07-29 成都光明光电股份有限公司 Glass composition, chemically strengthened glass, and method for producing same

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Also Published As

Publication number Publication date
JPWO2013172247A1 (en) 2016-01-12
US8824248B2 (en) 2014-09-02
MY166878A (en) 2018-07-24
SG11201407592YA (en) 2015-01-29
CN104303231A (en) 2015-01-21
WO2013172247A1 (en) 2013-11-21
JP6147735B2 (en) 2017-06-14
US20140334276A1 (en) 2014-11-13
US20140036644A1 (en) 2014-02-06
US9007878B2 (en) 2015-04-14

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