SG11201602990XA - Glass substrate for magnetic disk and magnetic disk for heat assisted magnetic recording - Google Patents

Glass substrate for magnetic disk and magnetic disk for heat assisted magnetic recording

Info

Publication number
SG11201602990XA
SG11201602990XA SG11201602990XA SG11201602990XA SG11201602990XA SG 11201602990X A SG11201602990X A SG 11201602990XA SG 11201602990X A SG11201602990X A SG 11201602990XA SG 11201602990X A SG11201602990X A SG 11201602990XA SG 11201602990X A SG11201602990X A SG 11201602990XA
Authority
SG
Singapore
Prior art keywords
magnetic disk
glass substrate
magnetic
heat assisted
recording
Prior art date
Application number
SG11201602990XA
Other languages
English (en)
Inventor
Masayoshi Yoshida
Masahiro Katagiri
Original Assignee
Hoya Glass Disk Vietnam Ii Ltd
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 Glass Disk Vietnam Ii Ltd, Hoya Corp filed Critical Hoya Glass Disk Vietnam Ii Ltd
Publication of SG11201602990XA publication Critical patent/SG11201602990XA/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
    • G11B5/62—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
    • 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
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/0021—Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
SG11201602990XA 2013-10-31 2013-10-31 Glass substrate for magnetic disk and magnetic disk for heat assisted magnetic recording SG11201602990XA (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/VN2013/000012 WO2015066735A1 (en) 2013-10-31 2013-10-31 Glass substrate for magnetic disk and magnetic disk for heat assisted magnetic recording

Publications (1)

Publication Number Publication Date
SG11201602990XA true SG11201602990XA (en) 2016-05-30

Family

ID=53005321

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201602990XA SG11201602990XA (en) 2013-10-31 2013-10-31 Glass substrate for magnetic disk and magnetic disk for heat assisted magnetic recording

Country Status (5)

Country Link
US (1) US9728217B2 (zh)
JP (1) JP6225248B2 (zh)
CN (1) CN105684080B (zh)
SG (1) SG11201602990XA (zh)
WO (1) WO2015066735A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11270724B1 (en) * 2021-03-04 2022-03-08 Western Digital Technologies, Inc. Glass substrates for heat assisted magnetic recording (HAMR) and methods and apparatus for use with the glass substrates

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0696436A (ja) * 1992-09-11 1994-04-08 Hitachi Metals Ltd 磁気記録媒体
JP4293389B2 (ja) 1999-01-11 2009-07-08 Ｈｏｙａ株式会社 磁気ディスクの製造方法
JP3793401B2 (ja) * 1999-07-07 2006-07-05 Ｈｏｙａ株式会社 結晶化ガラスからなる情報記録媒体用基板及び情報記録媒体
JP4213858B2 (ja) 2000-02-03 2009-01-21 花王株式会社 研磨液組成物
US6790509B2 (en) 2000-10-19 2004-09-14 Hoya Corporation Substrate for information recording medium, information recording medium, and method for controlling surface of substrate for information recording medium
JP2003187421A (ja) 2001-09-04 2003-07-04 Nippon Sheet Glass Co Ltd 磁気ディスク用ガラス基板の製造方法及び磁気ディスク用ガラス基板
JP4234991B2 (ja) * 2002-12-26 2009-03-04 Ｈｏｙａ株式会社 情報記録媒体用ガラス基板の製造方法及びその製造方法によって製造される情報記録媒体用ガラス基板
AU2003292786A1 (en) * 2002-12-26 2004-07-22 Hoya Corporation Method for producing glass substrate for information recording medium, polishing apparatus and glass substrate for information recording medium
JP4707311B2 (ja) * 2003-08-08 2011-06-22 花王株式会社 磁気ディスク用基板
US20070003796A1 (en) * 2005-06-03 2007-01-04 Hoya Corporation Method for manufacturing magnetic disk glass substrate and method for manufacturing magnetic disk
JP2007164916A (ja) 2005-12-15 2007-06-28 Showa Denko Kk 磁気ディスク用基板および磁気記録媒体
WO2007069501A1 (en) * 2005-12-15 2007-06-21 Showa Denko K.K. Magnetic disc substrate and magnetic recording medium thereof
JP5428793B2 (ja) 2009-11-17 2014-02-26 旭硝子株式会社 ガラス基板研磨方法および磁気記録媒体用ガラス基板の製造方法
JP2011210310A (ja) 2010-03-30 2011-10-20 Konica Minolta Opto Inc 情報記録媒体用ガラス基板の製造方法
JP2013178855A (ja) 2010-06-24 2013-09-09 Konica Minolta Advanced Layers Inc 磁気記録媒体およびその製造方法
JP5617387B2 (ja) 2010-07-06 2014-11-05 富士電機株式会社 垂直磁気記録媒体用基板の製造方法、および、該製造方法により製造される垂直磁気記録媒体用基板
WO2013145503A1 (ja) * 2012-03-29 2013-10-03 コニカミノルタ株式会社 Ｈｄｄ用ガラス基板の製造方法

Also Published As

Publication number Publication date
WO2015066735A1 (en) 2015-05-07
CN105684080A (zh) 2016-06-15
US9728217B2 (en) 2017-08-08
CN105684080B (zh) 2018-08-28
US20160254018A1 (en) 2016-09-01
JP6225248B2 (ja) 2017-11-01
JP2016532235A (ja) 2016-10-13

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