MY184326A - Manufacturing Method Of A Glass Substrate For A Magnetic Disk And Manufacturing Method Of A Magnetic Disk - Google Patents

Manufacturing Method Of A Glass Substrate For A Magnetic Disk And Manufacturing Method Of A Magnetic Disk

Info

Publication number
MY184326A
MY184326A MYPI2011006228A MYPI2011006228A MY184326A MY 184326 A MY184326 A MY 184326A MY PI2011006228 A MYPI2011006228 A MY PI2011006228A MY PI2011006228 A MYPI2011006228 A MY PI2011006228A MY 184326 A MY184326 A MY 184326A
Authority
MY
Malaysia
Prior art keywords
glass substrate
manufacturing
magnetic disk
round hole
forming
Prior art date
Application number
MYPI2011006228A
Inventor
Seiichi Sai
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 MY184326A publication Critical patent/MY184326A/en

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8404Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

A manufacturing method of a glass substrate (100) for a magnetic disk comprising a step of forming a round hole (105) in the glass substrate (100), the step of forming a round hole comprising; a first of, for one of main surfaces of the glass substrate (100), forming a cut line (102) that is to form a periphery of a region that is to become the round hole (105) in a perpendicular direction that is substantially perpendicular to the main surface of the glass substrate (100); a second step of causing the cut line (102) to reach the other main surface of the glass substrate; and a third step of, by causing a pushing body (103) to come into contact and to apply force in a perpendicular direction from one of the main surfaces to a glass portion (101) that is to be separated from the glass substrate (100) to become a round hole, forming a round hole (105) in the glass substrate (100) by separating the glass portion (101); wherein in the third step, the glass portion (101) is separated from the glass substrate (100) so as not to allow the pushing body (103) to protrude from the other main surface.
MYPI2011006228A 2009-09-29 2010-09-29 Manufacturing Method Of A Glass Substrate For A Magnetic Disk And Manufacturing Method Of A Magnetic Disk MY184326A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009224201 2009-09-29
PCT/JP2010/066895 WO2011040431A1 (en) 2009-09-29 2010-09-29 Manufacturing method of magnetic disk-use glass substrate, and magnetic disk

Publications (1)

Publication Number Publication Date
MY184326A true MY184326A (en) 2021-04-01

Family

ID=43826247

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2011006228A MY184326A (en) 2009-09-29 2010-09-29 Manufacturing Method Of A Glass Substrate For A Magnetic Disk And Manufacturing Method Of A Magnetic Disk

Country Status (5)

Country Link
JP (1) JP5600321B2 (en)
CN (1) CN102473421B (en)
MY (1) MY184326A (en)
SG (1) SG176884A1 (en)
WO (1) WO2011040431A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2973354B2 (en) * 1996-04-18 1999-11-08 日本板硝子株式会社 Glass substrate for disk
JP4058542B2 (en) * 1997-05-30 2008-03-12 三星ダイヤモンド工業株式会社 Substrate break device, substrate break method, substrate cutting device and substrate cutting system
JPH1110591A (en) * 1997-06-17 1999-01-19 Hoya Corp Cutting device
DE10030388A1 (en) * 2000-06-21 2002-01-03 Schott Glas Process for the production of glass substrates for electronic storage media
JP3981374B2 (en) * 2004-09-29 2007-09-26 Hoya株式会社 Manufacturing method of glass substrate for magnetic disk and manufacturing method of magnetic disk
JP4424675B2 (en) * 2005-03-28 2010-03-03 Hoya株式会社 Method for manufacturing glass substrate for magnetic disk, and method for manufacturing magnetic disk
JP5371183B2 (en) * 2006-03-24 2013-12-18 Hoya株式会社 Manufacturing method of glass substrate for magnetic disk and manufacturing method of magnetic disk

Also Published As

Publication number Publication date
JP5600321B2 (en) 2014-10-01
JPWO2011040431A1 (en) 2013-02-28
WO2011040431A1 (en) 2011-04-07
CN102473421A (en) 2012-05-23
CN102473421B (en) 2015-07-29
SG176884A1 (en) 2012-01-30

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