TW366331B - A glass-ceramic substrate for a magnetic disk - Google Patents

A glass-ceramic substrate for a magnetic disk

Info

Publication number
TW366331B
TW366331B TW086101219A TW86101219A TW366331B TW 366331 B TW366331 B TW 366331B TW 086101219 A TW086101219 A TW 086101219A TW 86101219 A TW86101219 A TW 86101219A TW 366331 B TW366331 B TW 366331B
Authority
TW
Taiwan
Prior art keywords
range
glass
magnetic disk
ceramic substrate
alpha
Prior art date
Application number
TW086101219A
Other languages
English (en)
Inventor
Katsuhiko Yamaguchi
Original Assignee
Ohara Kk
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 Kk filed Critical Ohara Kk
Application granted granted Critical
Publication of TW366331B publication Critical patent/TW366331B/zh

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
    • C03C10/0018—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 monovalent metal oxide as main constituents
    • C03C10/0027—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 monovalent metal oxide as main constituents containing SiO2, Al2O3, Li2O as main constituents
    • 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
    • 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
    • G11B5/62—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (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)
TW086101219A 1996-02-02 1997-02-01 A glass-ceramic substrate for a magnetic disk TW366331B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4037496 1996-02-02

Publications (1)

Publication Number Publication Date
TW366331B true TW366331B (en) 1999-08-11

Family

ID=12578886

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086101219A TW366331B (en) 1996-02-02 1997-02-01 A glass-ceramic substrate for a magnetic disk

Country Status (8)

Country Link
US (2) US5866489A (zh)
EP (1) EP0788093B1 (zh)
KR (1) KR100188901B1 (zh)
CN (1) CN1086679C (zh)
DE (1) DE69721353T2 (zh)
MY (1) MY115524A (zh)
SG (1) SG52914A1 (zh)
TW (1) TW366331B (zh)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3416033B2 (ja) * 1996-09-05 2003-06-16 株式会社オハラ 磁気ヘッド用結晶化ガラス基板およびその製造方法
US6120922A (en) * 1997-04-28 2000-09-19 Goto; Naoyuki Glass-ceramic substrate for a magnetic information storage medium
US6383645B1 (en) 1998-03-23 2002-05-07 Kabushiki Kaisha Ohara Glass-ceramic substrate for an information storage medium
US6395368B1 (en) * 1998-08-10 2002-05-28 Kabushiki Kaisha Ohara Glass-ceramic substrate for a magnetic information storage medium
US6383404B1 (en) 1998-08-19 2002-05-07 Hoya Corporation Glass substrate for magnetic recording medium, magnetic recording medium, and method of manufacturing the same
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
BR0008208A (pt) * 1999-02-12 2002-02-19 Gen Electric Meios de armazenamento de dados
US6440531B1 (en) * 1999-05-13 2002-08-27 Nippon Sheet Glass Co., Ltd Hydrofluoric acid etched substrate for information recording medium
JP4337176B2 (ja) 1999-07-06 2009-09-30 コニカミノルタオプト株式会社 ガラス組成
JP4158282B2 (ja) 1999-07-06 2008-10-01 コニカミノルタオプト株式会社 磁気ディスク用結晶化ガラス基板
JP4849702B2 (ja) 1999-07-06 2012-01-11 コニカミノルタオプト株式会社 結晶化ガラス
JP4831854B2 (ja) 1999-07-06 2011-12-07 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
JP2001026451A (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
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
JP4265035B2 (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
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
JP2001026445A (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
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
JP3107304B1 (ja) * 1999-08-10 2000-11-06 株式会社オハラ 光フィルター用ガラスセラミックス及び光フィルター
US6677259B2 (en) * 1999-08-10 2004-01-13 Kabushiki Kaisha Ohara Glass-ceramics for a light filter
US6426311B1 (en) * 2000-02-01 2002-07-30 Kabushiki Kaisha Ohara Glass-ceramics
JP4207358B2 (ja) 2000-04-03 2009-01-14 コニカミノルタオプト株式会社 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
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
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
JP2001287967A (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
JP2001287934A (ja) 2000-04-03 2001-10-16 Minolta Co Ltd ガラス組成
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
CN1103326C (zh) * 2000-11-16 2003-03-19 湖北新华光信息材料股份有限公司 一种化学钢化玻璃磁盘基板制作方法
JP2004536693A (ja) * 2001-04-19 2004-12-09 ゼネラル・エレクトリック・カンパニイ スピンコート媒体
TW200724506A (en) * 2005-10-07 2007-07-01 Ohara Kk Inorganic composition
JP4467597B2 (ja) 2007-04-06 2010-05-26 株式会社オハラ 無機組成物物品
CN101909816B (zh) * 2008-10-01 2013-01-23 旭硝子株式会社 研磨浆料、其制造方法、研磨方法及磁盘用玻璃基板的制造方法
EP3152172B1 (de) 2014-05-16 2022-10-26 Ivoclar Vivadent AG Verwendung von glaskeramik mit tiefquarz als hauptkristallphase als dentalmaterial
EP3135641A1 (de) * 2015-08-25 2017-03-01 Ivoclar Vivadent AG Lithiumsilikat-tiefquarz-glaskeramik
CN112939469B (zh) * 2021-03-23 2022-03-08 成都光明光电股份有限公司 微晶玻璃和微晶玻璃制品

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4480044A (en) * 1984-02-01 1984-10-30 Corning Glass Works High expansion glass-ceramic articles
EP0729924B1 (en) * 1993-05-19 2000-01-26 Kabushiki Kaisha Ohara Glass-ceramic for a magnetic disk substrate
US5626935A (en) * 1993-05-19 1997-05-06 Kabushiki Kaisya Ohara Magnetic disk substrate and method for manufacturing the same
US5391522A (en) * 1993-05-19 1995-02-21 Kabushiki Kaisya Ohara Glass-ceramic for magnetic disks and method for manufacturing the same
JP2516553B2 (ja) * 1993-05-19 1996-07-24 株式会社オハラ 磁気ディスク用結晶化ガラスおよびその製造方法
JP2959363B2 (ja) * 1993-12-09 1999-10-06 株式会社オハラ 磁気ディスク用着色結晶化ガラス
JP2799544B2 (ja) * 1994-04-28 1998-09-17 株式会社オハラ 情報記録ディスク用結晶化ガラス
US5744208A (en) * 1994-06-24 1998-04-28 Corning Incorporated Glass-ceramics containing lithium disilicate and tridymite
US5582363A (en) * 1995-07-06 1996-12-10 Davis; Don Aircraft instrument panel cover
JPH10158034A (ja) * 1996-10-04 1998-06-16 S Ii C Kk 情報記録ディスク基板用結晶化ガラス

Also Published As

Publication number Publication date
CN1167736A (zh) 1997-12-17
KR100188901B1 (ko) 1999-06-01
US5985777A (en) 1999-11-16
MY115524A (en) 2003-07-31
US5866489A (en) 1999-02-02
DE69721353T2 (de) 2004-04-08
SG52914A1 (en) 1998-09-28
KR970061805A (ko) 1997-09-12
EP0788093B1 (en) 2003-05-02
CN1086679C (zh) 2002-06-26
DE69721353D1 (de) 2003-06-05
EP0788093A1 (en) 1997-08-06

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees