DE69815492D1 - Glaskeramisches Trägermaterial hoher Steifigkeit für magnetisches Informationsaufzeichnungsmedium - Google Patents

Glaskeramisches Trägermaterial hoher Steifigkeit für magnetisches Informationsaufzeichnungsmedium

Info

Publication number
DE69815492D1
DE69815492D1 DE69815492T DE69815492T DE69815492D1 DE 69815492 D1 DE69815492 D1 DE 69815492D1 DE 69815492 T DE69815492 T DE 69815492T DE 69815492 T DE69815492 T DE 69815492T DE 69815492 D1 DE69815492 D1 DE 69815492D1
Authority
DE
Germany
Prior art keywords
glass
recording medium
information recording
carrier material
high rigidity
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69815492T
Other languages
English (en)
Other versions
DE69815492T2 (de
Inventor
Naoyuki Goto
Kousuke O Kabushiki K Nakajima
Junkko O Kabushiki Kai Ishioka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ohara Inc
Original Assignee
Ohara Inc
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 Ohara Inc filed Critical Ohara Inc
Application granted granted Critical
Publication of DE69815492D1 publication Critical patent/DE69815492D1/de
Publication of DE69815492T2 publication Critical patent/DE69815492T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0036—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and a divalent metal oxide as main constituents
    • C03C10/0045—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and a divalent metal oxide as main constituents containing SiO2, Al2O3 and MgO as main constituents
    • 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
    • G11B5/842—Coating a support with a liquid magnetic dispersion
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0054—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing PbO, SnO2, B2O3
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0081—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition having a magnetic crystal phase
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Glass Compositions (AREA)
  • Magnetic Record Carriers (AREA)
DE69815492T 1998-02-26 1998-12-03 Glaskeramisches Trägermaterial hoher Steifigkeit für magnetisches Informationsaufzeichnungsmedium Expired - Lifetime DE69815492T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP6219298 1998-02-26
JP6219298 1998-02-26
JP27108598 1998-09-25
JP27108598 1998-09-25

Publications (2)

Publication Number Publication Date
DE69815492D1 true DE69815492D1 (de) 2003-07-17
DE69815492T2 DE69815492T2 (de) 2004-05-19

Family

ID=26403251

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69815491T Expired - Lifetime DE69815491T2 (de) 1998-02-26 1998-12-03 Glaskeramisches Trägermaterial hoher Steifigkeit für magnetisches Informationsaufzeichnungsmedium I
DE69815492T Expired - Lifetime DE69815492T2 (de) 1998-02-26 1998-12-03 Glaskeramisches Trägermaterial hoher Steifigkeit für magnetisches Informationsaufzeichnungsmedium

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69815491T Expired - Lifetime DE69815491T2 (de) 1998-02-26 1998-12-03 Glaskeramisches Trägermaterial hoher Steifigkeit für magnetisches Informationsaufzeichnungsmedium I

Country Status (8)

Country Link
US (2) US6344423B2 (de)
EP (2) EP0939396B1 (de)
KR (2) KR100329001B1 (de)
CN (2) CN1228395A (de)
DE (2) DE69815491T2 (de)
MY (1) MY120241A (de)
SG (1) SG72899A1 (de)
TW (2) TW579370B (de)

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US6344423B2 (en) * 1998-02-26 2002-02-05 Kabushiki Kaisha Ohara High rigidity glass-ceramic substrate for a magnetic information storage medium
US7264894B2 (en) * 1998-03-13 2007-09-04 Hoya Corporation Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate
US6294490B1 (en) 1998-03-13 2001-09-25 Hoya Corporation Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate
JP2000203880A (ja) * 1998-09-11 2000-07-25 Ohara Inc 情報記憶媒体用ガラスセラミックス基板及びその製造方法、並びに情報記憶媒体ディスク
JP4680347B2 (ja) * 1999-06-01 2011-05-11 株式会社オハラ 高剛性ガラスセラミックス基板
SG97155A1 (en) * 1999-07-07 2003-07-18 Hoya Corp Substrate for information recording medium and magnetic recording medium composed of crystallized glass
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JP2001026445A (ja) * 1999-07-14 2001-01-30 Minolta Co Ltd ガラス組成
JP2001026456A (ja) * 1999-07-14 2001-01-30 Minolta Co Ltd ガラス組成
JP4265036B2 (ja) * 1999-07-14 2009-05-20 コニカミノルタオプト株式会社 結晶化ガラス組成物
JP4207316B2 (ja) * 1999-07-14 2009-01-14 コニカミノルタオプト株式会社 結晶化ガラス組成物
JP4284763B2 (ja) * 1999-07-14 2009-06-24 コニカミノルタオプト株式会社 ガラス組成
JP2001026454A (ja) * 1999-07-14 2001-01-30 Minolta Co Ltd ガラス組成
JP2001026458A (ja) * 1999-07-14 2001-01-30 Minolta Co Ltd ガラス組成
JP2001026452A (ja) * 1999-07-14 2001-01-30 Minolta Co Ltd ガラス組成
JP2001026446A (ja) * 1999-07-14 2001-01-30 Minolta Co Ltd ガラス組成
JP2001026451A (ja) * 1999-07-14 2001-01-30 Minolta Co Ltd ガラス組成
JP2001026440A (ja) * 1999-07-14 2001-01-30 Minolta Co Ltd ガラス組成
US6627565B1 (en) * 1999-07-27 2003-09-30 Hoya Corporation Crystallized glass substrate for information recording medium
WO2001021539A1 (fr) 1999-09-21 2001-03-29 Kabushiki Kaisha Ohara Element de maintien pour disque de stockage d'information et unite de disque de stockage d'information
US6426311B1 (en) * 2000-02-01 2002-07-30 Kabushiki Kaisha Ohara Glass-ceramics
JP4273623B2 (ja) * 2000-04-03 2009-06-03 コニカミノルタオプト株式会社 ガラス組成物
JP4300676B2 (ja) * 2000-04-03 2009-07-22 コニカミノルタオプト株式会社 ガラス組成物
JP4273624B2 (ja) * 2000-04-03 2009-06-03 コニカミノルタオプト株式会社 ガラス組成物
JP2001287967A (ja) * 2000-04-03 2001-10-16 Minolta Co Ltd ガラス組成
JP4273625B2 (ja) * 2000-04-03 2009-06-03 コニカミノルタオプト株式会社 ガラス組成物
JP2001287934A (ja) * 2000-04-03 2001-10-16 Minolta Co Ltd ガラス組成
JP4224925B2 (ja) * 2000-04-03 2009-02-18 コニカミノルタオプト株式会社 ガラス組成物
JP2001287931A (ja) * 2000-04-03 2001-10-16 Minolta Co Ltd ガラス組成
US7071132B2 (en) * 2000-07-07 2006-07-04 Kabushiki Kaisha Ohara Low expansion transparent glass ceramics
US6860795B2 (en) * 2001-09-17 2005-03-01 Hitachi Global Storage Technologies Netherlands B.V. Edge finishing process for glass or ceramic disks used in disk drive data storage devices
US20040039395A1 (en) * 2002-05-24 2004-02-26 Coon Thomas M. Instruments for knee surgery and method of use
DE10346197B4 (de) * 2003-09-30 2006-02-16 Schott Ag Glaskeramik, Verfahren zur Herstellung einer solchen und Verwendung
EP1713983A1 (de) 2004-01-09 2006-10-25 Falcon Waterfree Technologies Umlenker, flüssigkeitspegelanzeige und chemische vorbehandlungs- und nachbehandlungsimplementationen, die in wasserlosen urinalen nützlich sind
US7387838B2 (en) * 2004-05-27 2008-06-17 Delaware Capital Formation, Inc. Low loss glass-ceramic materials, method of making same and electronic packages including same
US7186461B2 (en) * 2004-05-27 2007-03-06 Delaware Capital Formation, Inc. Glass-ceramic materials and electronic packages including same
DE102007020246B4 (de) * 2007-04-24 2012-12-27 Schott Ag Metallkolloidgefärbte oder farblose Glaskeramik und in eine metallkolloidgefärbte oder farblose Glaskeramik umwandelbares farbloses Glas
JP4755135B2 (ja) * 2007-04-27 2011-08-24 株式会社オハラ 結晶化ガラス
CN102290056B (zh) * 2007-09-28 2014-12-03 Hoya株式会社 磁盘用玻璃基板及其制造方法、磁盘
JP5053948B2 (ja) * 2007-12-21 2012-10-24 株式会社オハラ 結晶化ガラス
MY177073A (en) 2010-04-27 2020-09-04 Agc Inc Method for producing magnetic disk, and glass substrate for information recording medium
WO2014004079A1 (en) * 2012-06-29 2014-01-03 Corning Incorporated Glass-ceramic substrates for semiconductor processing
JP6026926B2 (ja) * 2012-11-16 2016-11-16 株式会社オハラ 結晶化ガラスおよび情報記録媒体用結晶化ガラス基板
CN104496186B (zh) * 2014-12-31 2017-12-15 海南大学 一种堇青石基纳米微晶玻璃及其制备方法
CN109923083B (zh) * 2016-11-14 2022-07-26 Hoya株式会社 磁记录介质基板用玻璃、磁记录介质基板、磁记录介质和磁记录再生装置用玻璃间隔物
EP3647286B1 (de) * 2017-06-29 2023-11-22 Nippon Sheet Glass Company, Limited Glaszusammensetzung und glasprodukt damit
US11192818B2 (en) 2017-11-30 2021-12-07 Corning Incorporated Ion exchangeable, transparent gahnite-spinel glass ceramics with high hardness and modulus
CN112119047B (zh) 2018-05-16 2023-06-30 Hoya株式会社 磁记录介质基板用玻璃、磁记录介质基板、磁记录介质、磁记录再生装置用玻璃间隔物和磁记录再生装置
CN109250920A (zh) * 2018-09-19 2019-01-22 深圳市晶特智造科技有限公司 一种低温共烧陶瓷材料及其制备方法
CN113365957B (zh) 2018-11-30 2023-12-26 康宁股份有限公司 具有高硬度和模量的可离子交换的不透明锌尖晶石-尖晶石玻璃陶瓷
CN111807705B (zh) * 2020-06-29 2022-04-05 成都光明光电股份有限公司 微晶玻璃、微晶玻璃制品及其制造方法
CN112372523B (zh) * 2020-11-13 2022-06-07 湖南兴大新材料有限公司 一种陶瓷结合剂、高抗弯强度cbn砂轮及其制备工艺
CN112939471A (zh) * 2021-03-15 2021-06-11 武汉理工大学 一种高导热低膨胀低介电的微晶玻璃及其制备方法
CN115784616A (zh) * 2022-11-15 2023-03-14 常熟佳合显示科技有限公司 一种mas微晶玻璃及其制备方法

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Also Published As

Publication number Publication date
EP0939395B1 (de) 2003-06-11
EP0939396A1 (de) 1999-09-01
US6344423B2 (en) 2002-02-05
US6245411B1 (en) 2001-06-12
SG72899A1 (en) 2000-05-23
EP0939395A1 (de) 1999-09-01
CN1228395A (zh) 1999-09-15
DE69815491T2 (de) 2004-05-06
KR100329001B1 (ko) 2002-03-20
MY120241A (en) 2005-09-30
DE69815492T2 (de) 2004-05-19
US20010016552A1 (en) 2001-08-23
CN1228396A (zh) 1999-09-15
KR19990072857A (ko) 1999-09-27
CN1138716C (zh) 2004-02-18
TW579370B (en) 2004-03-11
KR19990072858A (ko) 1999-09-27
EP0939396B1 (de) 2003-06-11
DE69815491D1 (de) 2003-07-17
KR100329000B1 (ko) 2002-04-10
TW498059B (en) 2002-08-11

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