SG48534A1 - A glass substrate of disk for recording information a disk for recording information and a disk device for recording information - Google Patents

A glass substrate of disk for recording information a disk for recording information and a disk device for recording information

Info

Publication number
SG48534A1
SG48534A1 SG1997002336A SG1997002336A SG48534A1 SG 48534 A1 SG48534 A1 SG 48534A1 SG 1997002336 A SG1997002336 A SG 1997002336A SG 1997002336 A SG1997002336 A SG 1997002336A SG 48534 A1 SG48534 A1 SG 48534A1
Authority
SG
Singapore
Prior art keywords
recording information
disk
glass substrate
disk device
recording
Prior art date
Application number
SG1997002336A
Other languages
English (en)
Inventor
Hiroki Yamamoto
Takashi Naito
Takashi Namekawa
Ken Takahashi
Masahiro Watanabe
Noriyuki Takeo
Original Assignee
Hitachi Ltd
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=26505283&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SG48534(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of SG48534A1 publication Critical patent/SG48534A1/en

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
    • C03C10/0009—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 silica as main constituent
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
    • G11B23/0021—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form discs
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
    • 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
    • Y10T428/21—Circular sheet or circular blank

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)
  • Glass Compositions (AREA)
  • Magnetic Record Carriers (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
SG1997002336A 1996-07-18 1997-07-01 A glass substrate of disk for recording information a disk for recording information and a disk device for recording information SG48534A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP18905896 1996-07-18
JP28206896A JP3211683B2 (ja) 1996-07-18 1996-10-24 情報記録ディスク用ガラス基板

Publications (1)

Publication Number Publication Date
SG48534A1 true SG48534A1 (en) 1998-04-17

Family

ID=26505283

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1997002336A SG48534A1 (en) 1996-07-18 1997-07-01 A glass substrate of disk for recording information a disk for recording information and a disk device for recording information

Country Status (4)

Country Link
US (3) US6040029A (ja)
JP (1) JP3211683B2 (ja)
MY (1) MY132608A (ja)
SG (1) SG48534A1 (ja)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001354444A (ja) * 1996-07-18 2001-12-25 Hitachi Ltd 情報記録ディスク用ガラス基板
JP3211683B2 (ja) * 1996-07-18 2001-09-25 株式会社日立製作所 情報記録ディスク用ガラス基板
JPH10340482A (ja) * 1997-06-09 1998-12-22 Hitachi Ltd 光情報記録媒体
US6577472B2 (en) * 1997-07-24 2003-06-10 Hitachi, Ltd. Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture
DE19802919C1 (de) * 1998-01-27 1999-10-07 Schott Glas Verwendung von Gläsern als Festplattensubstrate
BR0008208A (pt) 1999-02-12 2002-02-19 Gen Electric Meios de armazenamento de dados
JP2001006210A (ja) * 1999-06-22 2001-01-12 Sony Corp 光記録媒体及びディスクカートリッジ
JP3994371B2 (ja) * 2001-03-01 2007-10-17 株式会社日立製作所 情報記録ディスク用ガラス基板及びそのガラス基板を用いた情報記録ディスク
JP3995902B2 (ja) * 2001-05-31 2007-10-24 Ｈｏｙａ株式会社 情報記録媒体用ガラス基板及びそれを用いた磁気情報記録媒体
US7462411B2 (en) 2002-06-03 2008-12-09 Hoya Corporation Substrate for information recording medium, information recording medium and process for producing the same
JP4726399B2 (ja) * 2003-05-29 2011-07-20 コニカミノルタオプト株式会社 ガラス基板
JP4224062B2 (ja) * 2003-12-19 2009-02-12 富士通株式会社 光磁気記録媒体およびその製造方法、光磁気記録媒体用基板、並びに、母型スタンパおよびその製造方法
DE102004040759B4 (de) * 2004-08-21 2010-09-16 Schott Ag Hausgerät mit einer Glas- oder Glaskeramikplatte
JP2006083044A (ja) * 2004-09-17 2006-03-30 Hitachi Ltd ガラス部材
JP2006083045A (ja) * 2004-09-17 2006-03-30 Hitachi Ltd ガラス部材
JP2006083043A (ja) * 2004-09-17 2006-03-30 Hitachi Ltd ガラス材とその製造方法
JP2006160546A (ja) * 2004-12-06 2006-06-22 Hitachi Ltd 平面型表示装置
JP2006298691A (ja) * 2005-04-20 2006-11-02 Hitachi Ltd 平面型画像表示装置
JP5050407B2 (ja) 2006-05-18 2012-10-17 株式会社日立製作所 前面板およびそれを用いた表示装置
JP2008059332A (ja) * 2006-08-31 2008-03-13 Brother Ind Ltd 多機能装置および利用条件設定プログラム
CN101980983B (zh) 2008-02-26 2014-04-16 康宁股份有限公司 用于硅酸盐玻璃的澄清剂
US20100310856A1 (en) * 2009-06-04 2010-12-09 Freiman Stephen W Transparent materials having enhanced resistance to crack growth
US10357850B2 (en) * 2012-09-24 2019-07-23 Electro Scientific Industries, Inc. Method and apparatus for machining a workpiece
US11352287B2 (en) 2012-11-28 2022-06-07 Vitro Flat Glass Llc High strain point glass

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804646A (en) 1969-06-11 1974-04-16 Corning Glass Works Very high elastic moduli glasses
US4396720A (en) * 1982-07-06 1983-08-02 Corning Glass Works Transparent glass-ceramics containing mullite
US4519828A (en) * 1982-07-06 1985-05-28 Corning Glass Works Transparent glass-ceramics containing mullite
JPS5969440A (ja) 1982-10-14 1984-04-19 Natl Inst For Res In Inorg Mater 希土類酸化物含有アルミノけい酸塩ガラス
JPH01201043A (ja) 1988-02-05 1989-08-14 Eta G K:Kk 高強度ガラス
JP2886872B2 (ja) * 1989-01-13 1999-04-26 株式会社日立製作所 磁気ディスク用基板および磁気ディスク
US5064784A (en) 1989-04-18 1991-11-12 Tokai Kogyo Co., Ltd. Glass frit useful for the preparation of glass bubbles, and glass bubbles prepared by using it
JP2873702B2 (ja) 1989-11-21 1999-03-24 ティーディーケイ株式会社 磁気記録媒体および磁気記録再生方法
JP2837005B2 (ja) 1991-05-20 1998-12-14 ホーヤ株式会社 化学強化用ガラス
JP2951771B2 (ja) * 1991-09-26 1999-09-20 守 大森 希土類酸化物−アルミナ−シリカ焼結体およびその製造方法
JPH05303735A (ja) 1992-04-27 1993-11-16 Hitachi Ltd 磁気ディスクおよび磁気ディスク装置
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
US6236542B1 (en) 1994-01-21 2001-05-22 International Business Machines Corporation Substrate independent superpolishing process and slurry
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
JP2947131B2 (ja) 1994-10-26 1999-09-13 日本板硝子株式会社 磁気記録媒体用ガラス基板、その製造方法及び磁気記録媒体
JPH08287515A (ja) * 1995-02-13 1996-11-01 Matsushita Electric Ind Co Ltd 光学的情報記録媒体
US6150027A (en) * 1995-06-16 2000-11-21 Hitachi, Ltd Glass composition, structure, and apparatus using the same
US5726108A (en) * 1995-07-24 1998-03-10 Yamamura Glass Co., Ltd. Glass-ceramic magnetic disk substrate
US5820960A (en) * 1996-05-15 1998-10-13 Saint-Gobain/Norton Industrial Ceramics Corporation Thin zirconia disk substrate
JPH1029832A (ja) * 1996-05-17 1998-02-03 Ishizuka Glass Co Ltd レーザーテクスチャ加工に適したガラス材料及びそれを用いた磁気ディスク用ガラス基板
JP3211683B2 (ja) * 1996-07-18 2001-09-25 株式会社日立製作所 情報記録ディスク用ガラス基板
US6577472B2 (en) * 1997-07-24 2003-06-10 Hitachi, Ltd. Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture

Also Published As

Publication number Publication date
MY132608A (en) 2007-10-31
US20040185217A1 (en) 2004-09-23
US6136401A (en) 2000-10-24
JP3211683B2 (ja) 2001-09-25
JPH1083531A (ja) 1998-03-31
US6040029A (en) 2000-03-21
US7232612B2 (en) 2007-06-19

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