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WO2008146522A1 - 磁気ディスク用ガラス基板の表面仕上げ方法及び磁気ディスク用ガラス基板 - Google Patents

磁気ディスク用ガラス基板の表面仕上げ方法及び磁気ディスク用ガラス基板 Download PDF

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Publication number
WO2008146522A1
WO2008146522A1 PCT/JP2008/055406 JP2008055406W WO2008146522A1 WO 2008146522 A1 WO2008146522 A1 WO 2008146522A1 JP 2008055406 W JP2008055406 W JP 2008055406W WO 2008146522 A1 WO2008146522 A1 WO 2008146522A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass substrate
magnetic disk
polished
inner circumferential
less
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.)
Ceased
Application number
PCT/JP2008/055406
Other languages
English (en)
French (fr)
Inventor
Yoshio Uchiyama
Hiroshi Doi
Gen Ishida
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.)
Toyo Kohan Co Ltd
Original Assignee
Toyo Kohan Co 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
Application filed by Toyo Kohan Co Ltd filed Critical Toyo Kohan Co Ltd
Priority to US12/087,050 priority Critical patent/US8109808B2/en
Priority to CN2008800000305A priority patent/CN101542606B/zh
Priority to JP2008521070A priority patent/JP4246791B2/ja
Publication of WO2008146522A1 publication Critical patent/WO2008146522A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
    • B24B37/048—Lapping machines or devices; Accessories designed for working plane surfaces of sliders and magnetic heads of hard disc drives or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/065—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of thin, brittle parts, e.g. semiconductors, wafers
    • 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
    • C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
    • 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
    • C03C19/00—Surface treatment of glass, not in the form of fibres or filaments, by mechanical means
    • 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
    • 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
    • C03C2204/00—Glasses, glazes or enamels with special properties
    • C03C2204/08—Glass having a rough surface

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Surface Treatment Of Glass (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

【課題】化学強化処理を行うことなく、化学的研磨における研磨深さを非常に少なくして 十分な円環強度を有する情報記録ディスク用ガラス基板を得る。 【解決手段】ドーナツ状の磁気ディスク用ガラス基板の内周部端面を機械的研磨により表面粗さをＲmaxで９ｎｍ以下とし、引き続き、該内周部端面を化学的研磨してその表層を２μｍ以上研磨除去する。内周部端面の表面粗さを、機械研磨により従来にない鏡面仕上げとすることで、化学的研磨における研磨深さを従来より低減しても十分な円環強度が得られる。研磨深さは５μｍ未満で十分である。
PCT/JP2008/055406 2007-05-30 2008-03-24 磁気ディスク用ガラス基板の表面仕上げ方法及び磁気ディスク用ガラス基板 Ceased WO2008146522A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/087,050 US8109808B2 (en) 2007-05-30 2008-03-24 Method of surface-finishing glass substrate for magnetic disks and glass substrate for magnetic disks
CN2008800000305A CN101542606B (zh) 2007-05-30 2008-03-24 磁盘用玻璃基板的表面加工方法和磁盘用玻璃基板
JP2008521070A JP4246791B2 (ja) 2007-05-30 2008-03-24 磁気ディスク用ガラス基板の表面仕上げ方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007143786 2007-05-30
JP2007-143786 2007-05-30

Publications (1)

Publication Number Publication Date
WO2008146522A1 true WO2008146522A1 (ja) 2008-12-04

Family

ID=40074795

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/055406 Ceased WO2008146522A1 (ja) 2007-05-30 2008-03-24 磁気ディスク用ガラス基板の表面仕上げ方法及び磁気ディスク用ガラス基板

Country Status (4)

Country Link
US (1) US8109808B2 (ja)
JP (1) JP4246791B2 (ja)
CN (1) CN101542606B (ja)
WO (1) WO2008146522A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011162434A (ja) * 2010-02-09 2011-08-25 Lg Chem Ltd フロートガラス製造システム用レイアウト、フロートガラス処理方法、及びそれによるフロートガラス
JP2011253575A (ja) * 2010-05-31 2011-12-15 Konica Minolta Opto Inc 熱アシスト記録媒体用ガラス基板
WO2016086430A1 (zh) * 2014-12-05 2016-06-09 深圳市华星光电技术有限公司 显示设备的加工机台和玻璃基板的加工方法

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8932510B2 (en) 2009-08-28 2015-01-13 Corning Incorporated Methods for laser cutting glass substrates
US8946590B2 (en) 2009-11-30 2015-02-03 Corning Incorporated Methods for laser scribing and separating glass substrates
US8721392B2 (en) 2011-06-28 2014-05-13 Corning Incorporated Glass edge finishing method
WO2013101444A1 (en) * 2011-12-30 2013-07-04 Corning Incorporated Media and methods for etching glass
WO2013146090A1 (ja) * 2012-03-30 2013-10-03 Hoya株式会社 磁気ディスク用ガラス基板の製造方法
US9938180B2 (en) * 2012-06-05 2018-04-10 Corning Incorporated Methods of cutting glass using a laser
US9610653B2 (en) 2012-09-21 2017-04-04 Electro Scientific Industries, Inc. Method and apparatus for separation of workpieces and articles produced thereby
MY172325A (en) * 2013-02-22 2019-11-21 Hoya Corp Annular substrate, magnetic-disk substrate, method for manufacturing a magnetic-disk substrate, magnetic disk, method for manufacturing a magnetic disk, and hard disk apparatus
SG11201506622TA (en) * 2013-03-01 2015-09-29 Hoya Corp Glass substrate for magnetic disk and magnetic disk
JP6243920B2 (ja) * 2013-09-28 2017-12-06 Hoya株式会社 ガラス基板の製造方法及び磁気ディスクの製造方法
MY180533A (en) 2014-03-17 2020-12-01 Shinetsu Chemical Co Methods for working synthetic quartz glass substrate having a mirror-like surface and method for sensing synthetic quartz glass substrate
WO2015152316A1 (ja) 2014-03-31 2015-10-08 Hoya株式会社 磁気ディスク用ガラス基板
US20210371327A1 (en) * 2020-06-01 2021-12-02 Western Digital Technologies, Inc. Method for treatment of a glass substrate with improved edge strength

Citations (7)

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Publication number Priority date Publication date Assignee Title
JPH0912333A (ja) * 1995-04-27 1997-01-14 A G Technol Kk 磁気ディスク用ガラス基板および磁気ディスク
JPH09124343A (ja) * 1995-10-31 1997-05-13 Hoya Corp 磁気ディスク用ガラス基板の製造方法及び磁気ディスクの製造方法
JPH10198942A (ja) * 1996-12-29 1998-07-31 Hoya Corp 記録媒体用ガラス基板、及び該基板を用いた記録媒体
JPH11120546A (ja) * 1997-10-13 1999-04-30 Hoya Corp 磁気ディスク用ガラス基板及びその製造方法、並びに磁気ディスク及びその製造方法
JP2005285276A (ja) * 2004-03-30 2005-10-13 Hoya Corp 磁気ディスク用ガラス基板の製造方法、磁気ディスクの製造方法及び磁気ディスク
JP2006164373A (ja) * 2004-12-06 2006-06-22 Asahi Glass Co Ltd ドーナツ状ガラス基板のコーティング方法。
JP2007102842A (ja) * 2005-09-30 2007-04-19 Hoya Corp 磁気記録媒体用ガラス基板および磁気ディスクの製造方法

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JP3527075B2 (ja) 1996-09-30 2004-05-17 Ｈｏｙａ株式会社 磁気記録媒体用ガラス基板、磁気記録媒体、及びそれらの製造方法
JPH11221742A (ja) * 1997-09-30 1999-08-17 Hoya Corp 研磨方法及び研磨装置並びに磁気記録媒体用ガラス基板及び磁気記録媒体
US6544893B2 (en) * 1999-03-30 2003-04-08 Hoya Corporation Method of manufacturing a glass substrate for an information recording medium, and method of manufacturing an information recording medium
JP2003016633A (ja) * 2001-06-28 2003-01-17 Asahi Glass Co Ltd 磁気ディスク用ガラス基板及びその製造方法
JP2005108306A (ja) * 2003-09-29 2005-04-21 Hoya Corp 磁気ディスク用ガラス基板の化学強化処理方法、磁気ディスク用化学強化ガラス基板の製造方法及び磁気ディスクの製造方法
US7395679B2 (en) * 2004-03-19 2008-07-08 Konica Minolta Opto, Inc. Method of manufacturing glass substrate for information recording medium
JP2006079800A (ja) * 2004-08-11 2006-03-23 Showa Denko Kk 磁気記録媒体用シリコン基板及びその製造方法並びに磁気記録媒体
JP2006099939A (ja) * 2004-08-31 2006-04-13 Asahi Glass Co Ltd 磁気ディスク用ガラス基板。
US20060128154A1 (en) * 2004-12-15 2006-06-15 Asahi Glass Company, Limited Glass substrate for magnetic disk and its production process
JP4557222B2 (ja) * 2005-03-24 2010-10-06 Ｈｏｙａ株式会社 磁気ディスク用ガラス基板の製造方法及び磁気ディスクの製造方法
SG136886A1 (en) * 2006-04-28 2007-11-29 Asahi Glass Co Ltd Method for producing glass substrate for magnetic disk, and magnetic disk
JP4836731B2 (ja) * 2006-07-18 2011-12-14 旭硝子株式会社 磁気ディスク用ガラス基板の製造方法

Patent Citations (7)

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JPH09124343A (ja) * 1995-10-31 1997-05-13 Hoya Corp 磁気ディスク用ガラス基板の製造方法及び磁気ディスクの製造方法
JPH10198942A (ja) * 1996-12-29 1998-07-31 Hoya Corp 記録媒体用ガラス基板、及び該基板を用いた記録媒体
JPH11120546A (ja) * 1997-10-13 1999-04-30 Hoya Corp 磁気ディスク用ガラス基板及びその製造方法、並びに磁気ディスク及びその製造方法
JP2005285276A (ja) * 2004-03-30 2005-10-13 Hoya Corp 磁気ディスク用ガラス基板の製造方法、磁気ディスクの製造方法及び磁気ディスク
JP2006164373A (ja) * 2004-12-06 2006-06-22 Asahi Glass Co Ltd ドーナツ状ガラス基板のコーティング方法。
JP2007102842A (ja) * 2005-09-30 2007-04-19 Hoya Corp 磁気記録媒体用ガラス基板および磁気ディスクの製造方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011162434A (ja) * 2010-02-09 2011-08-25 Lg Chem Ltd フロートガラス製造システム用レイアウト、フロートガラス処理方法、及びそれによるフロートガラス
US8806898B2 (en) 2010-02-09 2014-08-19 Lg Chem, Ltd. Layout for glass manufacturing system, glass handling method, and glass therefrom
JP2011253575A (ja) * 2010-05-31 2011-12-15 Konica Minolta Opto Inc 熱アシスト記録媒体用ガラス基板
WO2016086430A1 (zh) * 2014-12-05 2016-06-09 深圳市华星光电技术有限公司 显示设备的加工机台和玻璃基板的加工方法

Also Published As

Publication number Publication date
CN101542606B (zh) 2012-06-20
JP4246791B2 (ja) 2009-04-02
CN101542606A (zh) 2009-09-23
JPWO2008146522A1 (ja) 2010-08-19
US20100266874A1 (en) 2010-10-21
US8109808B2 (en) 2012-02-07

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