SG155822A1 - Manufacturing method of glass substrate for magnetic disc - Google Patents

Manufacturing method of glass substrate for magnetic disc

Info

Publication number
SG155822A1
SG155822A1 SG200807237-3A SG2008072373A SG155822A1 SG 155822 A1 SG155822 A1 SG 155822A1 SG 2008072373 A SG2008072373 A SG 2008072373A SG 155822 A1 SG155822 A1 SG 155822A1
Authority
SG
Singapore
Prior art keywords
glass substrate
polishing
retention unit
manufacturing
gear portion
Prior art date
Application number
SG200807237-3A
Inventor
Kotaro Yoshimaru
Masahiro Katagiri
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 SG155822A1 publication Critical patent/SG155822A1/en

Links

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

A manufacturing method of a glass substrate for a magnetic disc includes a polishing step in which an abrasive agent including a loose grain is supplied between a glass substrate and an abrasive pad for polishing a main surface of the glass substrate and a carrier for polishing retaining the glass substrate and the abrasive pad are relatively moved to carry out polishing, wherein the carrier for polishing includes a glass substrate retention unit having a retention hole for retaining the glass substrate and a gear portion provided on an outer circumference of the glass substrate retention unit, the glass substrate retention unit and the gear portion include different materials, thickness of the glass substrate retention unit is between 0.45 and 0.63 times as thick as target thickness of the glass substrate, and thickness of the gear portion is between 1.00 and 1.84 times as thick as the glass substrate retention unit.
SG200807237-3A 2008-03-10 2008-09-26 Manufacturing method of glass substrate for magnetic disc SG155822A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008059583A JP5334428B2 (en) 2008-03-10 2008-03-10 Manufacturing method of glass substrate for magnetic disk

Publications (1)

Publication Number Publication Date
SG155822A1 true SG155822A1 (en) 2009-10-29

Family

ID=41186647

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200807237-3A SG155822A1 (en) 2008-03-10 2008-09-26 Manufacturing method of glass substrate for magnetic disc

Country Status (2)

Country Link
JP (1) JP5334428B2 (en)
SG (1) SG155822A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5635078B2 (en) 2010-03-31 2014-12-03 Hoya株式会社 Manufacturing method of glass substrate for magnetic disk
WO2011125898A1 (en) 2010-03-31 2011-10-13 Hoya株式会社 Method for producing glass substrate for magnetic disk
JP5510030B2 (en) * 2010-04-26 2014-06-04 旭硝子株式会社 Manufacturing method of glass substrate for magnetic recording medium and glass substrate for magnetic recording medium
JP4973762B2 (en) * 2010-05-18 2012-07-11 旭硝子株式会社 Glass substrate for magnetic recording medium and method for manufacturing the same
JP2013004730A (en) * 2011-06-16 2013-01-07 Japan Pionics Co Ltd Vapor growth device
WO2013015750A1 (en) * 2011-07-25 2013-01-31 Hoya Glass Disk (Thailand) Ltd A method of manufacturing glass substrates for information recording medium
CN103009242A (en) * 2011-09-28 2013-04-03 上海双明光学科技有限公司 Protection method for processing heavy-caliber ultrathin quartz glass
JP5654538B2 (en) 2011-09-30 2015-01-14 Hoya株式会社 Manufacturing method of glass substrate for magnetic disk and manufacturing method of magnetic disk
JP2014188668A (en) * 2013-03-28 2014-10-06 Hoya Corp Method of manufacturing glass substrate
WO2015076227A1 (en) * 2013-11-20 2015-05-28 旭硝子株式会社 Glass plate manufacturing method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0655434A (en) * 1992-04-30 1994-03-01 Shin Etsu Chem Co Ltd Polishing carrier for glass wafer and its polishing method
JP2000288920A (en) * 1999-03-31 2000-10-17 Hoya Corp Polishing carrier, polishing method, and manufacture of information recording medium substrate
JP2002100594A (en) * 2000-09-22 2002-04-05 Komatsu Electronic Metals Co Ltd Method and device for grinding plane
JP4384591B2 (en) * 2004-12-08 2009-12-16 信越化学工業株式会社 Surface polishing method
JP2007276018A (en) * 2006-04-04 2007-10-25 Sumitomo Electric Ind Ltd Carrier for both-sided polisher

Also Published As

Publication number Publication date
JP2009214219A (en) 2009-09-24
JP5334428B2 (en) 2013-11-06

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