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MY188043A - Glass substrate for information recording medium - Google Patents

Glass substrate for information recording medium

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Publication number
MY188043A
MY188043AMYPI2016700695AMYPI2016700695AMY188043AMY 188043 AMY188043 AMY 188043AMY PI2016700695 AMYPI2016700695 AMY PI2016700695AMY PI2016700695 AMYPI2016700695 AMY PI2016700695AMY 188043 AMY188043 AMY 188043A
Authority
MY
Malaysia
Prior art keywords
recording medium
information recording
glass substrate
sio2
mgo
Prior art date
Application number
MYPI2016700695A
Inventor
Noriko Shimazu
Hiroshi Kajita
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 CorpfiledCriticalHoya Corp
Publication of MY188043ApublicationCriticalpatent/MY188043A/en

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Abstract

A glass substrate for an information recording medium of the present invention has a glass composition in which specific content ranges of constituent components are satisfied, and in mol%, the following conditions: SiO2+A12O3+B2O3: 67 to 82%; Li2O+Na2O+K2O: 8 to 20%; and MgO+CaO+SrO+BaO+ZnO: 10 to 28% are satisfied, and the following ratios: 0.85<SiO2/(SiO2+A12O3+B2O3)<0.95; 0.3<SLi2O/(Li2O+Na2O+K2O)<0.7; and 0.8<MgO/(MgO+CaO+SrO+BaO+ZnO)<0.99 are satisfied.
MYPI2016700695A2013-08-302014-08-22Glass substrate for information recording mediumMY188043A (en)

Applications Claiming Priority (2)

Application NumberPriority DateFiling DateTitle
JP20131799752013-08-30
PCT/JP2014/072008WO2015029902A1 (en)2013-08-302014-08-22Glass substrate for information recording media

Publications (1)

Publication NumberPublication Date
MY188043Atrue MY188043A (en)2021-11-11

Family

ID=52586461

Family Applications (1)

Application NumberTitlePriority DateFiling Date
MYPI2016700695AMY188043A (en)2013-08-302014-08-22Glass substrate for information recording medium

Country Status (5)

CountryLink
JP (1)JP6052936B2 (en)
CN (1)CN105473520B (en)
MY (1)MY188043A (en)
SG (1)SG11201601369TA (en)
WO (1)WO2015029902A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JP7165655B2 (en)*2017-06-092022-11-04Hoya株式会社 Glass for information recording medium substrate, information recording medium substrate, information recording medium and glass spacer for recording/reproducing device
EP4065527A2 (en)*2019-11-262022-10-05Corning IncorporatedMagnesium aluminosilicate glasses with high fracture toughness
US12122714B2 (en)2020-12-102024-10-22Corning IncorporatedGlass with unique fracture behavior for vehicle windshield
US11951713B2 (en)2020-12-102024-04-09Corning IncorporatedGlass with unique fracture behavior for vehicle windshield
WO2022186393A1 (en)*2021-03-052022-09-09Hoya株式会社Glass for magnetic recording medium substrate or for glass spacer to be used in magnetic recording/reproducing device, magnetic recording medium substrate, magnetic recording medium, glass spacer to be used in magnetic recording/reproducing device, and magnetic recording/reproducing device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
DE69902839T2 (en)*1998-04-282003-05-28Asahi Glass Co., Ltd. Flat glass and substrate glass for electronics
JP3995902B2 (en)*2001-05-312007-10-24Hoya株式会社 Glass substrate for information recording medium and magnetic information recording medium using the same
JP4530618B2 (en)*2002-09-272010-08-25コニカミノルタオプト株式会社 Glass composition and glass substrate
JP4430001B2 (en)*2005-11-012010-03-10湖州大享玻璃制品有限公司 Li2O-Al2O3-SiO2-MgO-K2O-F-based crystalline glass and crystallized glass, and method for producing the crystalline glass and crystallized glass
JP5699434B2 (en)*2009-04-022015-04-08旭硝子株式会社 Glass for information recording medium substrate, glass substrate for information recording medium and magnetic disk
JP5613164B2 (en)*2009-09-282014-10-22Hoya株式会社 Glass substrate for information recording medium and information recording medium
US8394516B2 (en)*2010-10-292013-03-12Hoya CorporationGlass substrate for magnetic recording medium and magnetic recording medium
JP5737043B2 (en)*2011-07-292015-06-17旭硝子株式会社 Substrate glass and glass substrate

Also Published As

Publication numberPublication date
JP6052936B2 (en)2016-12-27
SG11201601369TA (en)2016-03-30
WO2015029902A1 (en)2015-03-05
JPWO2015029902A1 (en)2017-03-02
CN105473520B (en)2018-11-06
CN105473520A (en)2016-04-06

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