MY182274A - Glass substrate for information recording medium and method for manufacturing the same - Google Patents

Glass substrate for information recording medium and method for manufacturing the same

Info

Publication number
MY182274A
MY182274A MYPI2014703885A MYPI2014703885A MY182274A MY 182274 A MY182274 A MY 182274A MY PI2014703885 A MYPI2014703885 A MY PI2014703885A MY PI2014703885 A MYPI2014703885 A MY PI2014703885A MY 182274 A MY182274 A MY 182274A
Authority
MY
Malaysia
Prior art keywords
glass substrate
recording medium
information recording
manufacturing
same
Prior art date
Application number
MYPI2014703885A
Inventor
Noriko Shimazu
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 MY182274A publication Critical patent/MY182274A/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

The method for manufacturing the glass substrate (1G) for an information recording medium is a method for manufacturing a glass substrate for an information recording medium to be used for an information recording medium (1) which has a magnetic thin film layer (23) formed on a main surface (14) of the glass substrate (1G) and has a recording density of equal to or greater than 600 Gbit per 6.45 square cm in a magnetic recording surface. An average value of SiOH/Si of a main surface of the glass substrate (1G) after being subjected to an alkali treatment in which the glass substrate (1G) for an information recording medium is immersed in a sodium hydroxide solution at pH 11 at 40?C for 30 minutes is 0.20 to 0.50 inclusive.
MYPI2014703885A 2012-06-29 2013-06-03 Glass substrate for information recording medium and method for manufacturing the same MY182274A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012147404 2012-06-29
PCT/JP2013/065354 WO2014002693A1 (en) 2012-06-29 2013-06-03 Information recording medium glass substrate, and manufacturing method of information recording medium glass substrate

Publications (1)

Publication Number Publication Date
MY182274A true MY182274A (en) 2021-01-18

Family

ID=49782859

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2014703885A MY182274A (en) 2012-06-29 2013-06-03 Glass substrate for information recording medium and method for manufacturing the same

Country Status (5)

Country Link
JP (1) JP6021911B2 (en)
CN (1) CN104488028B (en)
MY (1) MY182274A (en)
SG (1) SG11201408463YA (en)
WO (1) WO2014002693A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030188553A1 (en) * 2002-04-08 2003-10-09 Mann Larry G. Direct bonding methods using lithium
JP4479528B2 (en) * 2004-07-27 2010-06-09 富士電機デバイステクノロジー株式会社 Method of plating on glass substrate, method of manufacturing disk substrate for magnetic recording medium using the plating method, and method of manufacturing perpendicular magnetic recording medium
CN1740388A (en) * 2004-07-27 2006-03-01 富士电机电子设备技术株式会社 Method of manufacturing a disk substrate for a magnetic recording medium
JP3926371B2 (en) * 2005-02-10 2007-06-06 信越石英株式会社 Silica glass plate and method for producing the same
CN101512332B (en) * 2006-09-06 2013-10-09 株式会社堀场制作所 Glass electrode and sensitive glass for the glass electrode
JP2011175685A (en) * 2008-06-27 2011-09-08 Panasonic Corp Method and apparatus for manufacturing multilayer information recording medium
JP2010248071A (en) * 2010-07-30 2010-11-04 Toyo Sasaki Glass Co Ltd Highly washable glass molded article

Also Published As

Publication number Publication date
WO2014002693A1 (en) 2014-01-03
JP6021911B2 (en) 2016-11-09
CN104488028B (en) 2017-10-27
CN104488028A (en) 2015-04-01
SG11201408463YA (en) 2015-02-27
JPWO2014002693A1 (en) 2016-05-30

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