SG151160A1 - Manufacturing method of glass substrate for magnetic recording medium and magnetic recording medium - Google Patents

Manufacturing method of glass substrate for magnetic recording medium and magnetic recording medium

Info

Publication number
SG151160A1
SG151160A1 SG200805710-1A SG2008057101A SG151160A1 SG 151160 A1 SG151160 A1 SG 151160A1 SG 2008057101 A SG2008057101 A SG 2008057101A SG 151160 A1 SG151160 A1 SG 151160A1
Authority
SG
Singapore
Prior art keywords
recording medium
magnetic recording
glass substrate
manufacturing
chamfering
Prior art date
Application number
SG200805710-1A
Inventor
Takeyoshi Takahashi
Masaaki Ueda
Hirotaka Tanaka
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 SG151160A1 publication Critical patent/SG151160A1/en

Links

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

MANUFACTURING METHOD OF GLASS SUBSTRATE FOR MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING MEDIUM In the manufacturing method of a ring-shaped glass substrate for a magnetic recording medium, when a glass plate is processed to be a disc-shaped glass substrate 11, external shape thereof is formed by a laser scribe and a chamfering surface is formed by spherical center polishing. Therefore, a glass substrate for a magnetic recording medium with plane surfaces 14 and 17 and chamfering surfaces 15 and 18 without damages can be obtained.
SG200805710-1A 2007-09-27 2008-07-31 Manufacturing method of glass substrate for magnetic recording medium and magnetic recording medium SG151160A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007252668A JP2009087409A (en) 2007-09-27 2007-09-27 Manufacturing method of glass substrate for magnetic recording medium, and magnetic recording medium

Publications (1)

Publication Number Publication Date
SG151160A1 true SG151160A1 (en) 2009-04-30

Family

ID=40586521

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200805710-1A SG151160A1 (en) 2007-09-27 2008-07-31 Manufacturing method of glass substrate for magnetic recording medium and magnetic recording medium

Country Status (2)

Country Link
JP (1) JP2009087409A (en)
SG (1) SG151160A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5126351B2 (en) * 2009-12-25 2013-01-23 旭硝子株式会社 Disk-shaped glass substrate and method for manufacturing disk-shaped glass substrate
JP5840958B2 (en) * 2012-01-12 2016-01-06 特定非営利活動法人ナノフォトニクス工学推進機構 Surface flattening method of glass disk
SG11202006455TA (en) * 2018-01-31 2020-08-28 Hoya Corp Method for producing glass substrate for magnetic disk
WO2019189480A1 (en) * 2018-03-30 2019-10-03 Hoya株式会社 Glass substrate manufacturing method

Also Published As

Publication number Publication date
JP2009087409A (en) 2009-04-23

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