MY167607A - Method of manufacturing a glass substrate for hard disk drive - Google Patents

Method of manufacturing a glass substrate for hard disk drive

Info

Publication number
MY167607A
MY167607A MYPI2014700742A MYPI2014700742A MY167607A MY 167607 A MY167607 A MY 167607A MY PI2014700742 A MYPI2014700742 A MY PI2014700742A MY PI2014700742 A MYPI2014700742 A MY PI2014700742A MY 167607 A MY167607 A MY 167607A
Authority
MY
Malaysia
Prior art keywords
manufacturing
glass substrate
hard disk
disk drive
main surface
Prior art date
Application number
MYPI2014700742A
Inventor
Kajita Hiroshi
NAKAE Hazuki
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 MY167607A publication Critical patent/MY167607A/en

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
    • B24B37/07—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool
    • B24B37/08—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for double side lapping
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/228—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding 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
    • C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • C03C21/001—Treatment 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
    • C03C21/002—Treatment 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Surface Treatment Of Glass (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

METHOD OF MANUFACTURING A GLASS SUBSTRATE FOR HARD DISK DRIVE One aspect of the present invention is a method of manufacturing a glass substrate for HDD, wherein, in a glass blank immediately prior to a chemical reinforcing step, in a case where the amount of retardation from a cross-section is measured when the glass blank has been cut into the shape of a strip in a direction perpendicular to the main surface thereof, the difference between a first maximum value of the amount of retardation per unit optical path length in a range from one main surface to 10 µm, and a second maximum value of the amount of retardation per unit optical path length in a range from the other main surface to 10 µm, is 10 nm/mm or less.
MYPI2014700742A 2011-09-28 2012-09-14 Method of manufacturing a glass substrate for hard disk drive MY167607A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011212473 2011-09-28

Publications (1)

Publication Number Publication Date
MY167607A true MY167607A (en) 2018-09-20

Family

ID=47994674

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2014700742A MY167607A (en) 2011-09-28 2012-09-14 Method of manufacturing a glass substrate for hard disk drive

Country Status (5)

Country Link
JP (1) JP5339010B1 (en)
CN (1) CN104081457B (en)
MY (1) MY167607A (en)
SG (1) SG11201401037XA (en)
WO (1) WO2013046585A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014240346A (en) * 2013-05-15 2014-12-25 日本電気硝子株式会社 Glass plate for tempering and tempered glass plate
JP6860831B2 (en) * 2016-07-04 2021-04-21 日本電気硝子株式会社 Disc-shaped glass and its manufacturing method
SG11202007984WA (en) * 2018-03-30 2020-09-29 Hoya Corp Annealing plate, method for manufacturing annealing plate, and method for manufacturing substrate

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01172236A (en) * 1987-12-01 1989-07-07 F G K:Kk Production of poreless glass material
JP4556962B2 (en) * 2007-03-14 2010-10-06 コニカミノルタオプト株式会社 Method for reducing residual stress of blank material, method for manufacturing blank material and glass substrate for information recording medium
WO2009063756A1 (en) * 2007-11-12 2009-05-22 Asahi Glass Company, Limited Glass plate manufacturing method and residual stress measurement method for glass article
JP5497612B2 (en) * 2009-11-25 2014-05-21 Ｈｏｙａ株式会社 GLASS BLANK AND ITS MANUFACTURING METHOD, MAGNETIC RECORDING MEDIUM SUBSTRATE, AND MAGNETIC RECORDING MEDIUM MANUFACTURING METHOD

Also Published As

Publication number Publication date
WO2013046585A1 (en) 2013-04-04
SG11201401037XA (en) 2014-07-30
JPWO2013046585A1 (en) 2015-03-26
JP5339010B1 (en) 2013-11-13
CN104081457B (en) 2017-05-10
CN104081457A (en) 2014-10-01

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