CN119836403A - 磁记录介质基板用玻璃、磁记录介质基板和磁记录再生装置 - Google Patents

磁记录介质基板用玻璃、磁记录介质基板和磁记录再生装置 Download PDF

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Publication number
CN119836403A
CN119836403A CN202380063959.7A CN202380063959A CN119836403A CN 119836403 A CN119836403 A CN 119836403A CN 202380063959 A CN202380063959 A CN 202380063959A CN 119836403 A CN119836403 A CN 119836403A
Authority
CN
China
Prior art keywords
glass
less
magnetic recording
content
recording medium
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202380063959.7A
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English (en)
Chinese (zh)
Inventor
德光秀造
桥本和明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoya Corp
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 CN119836403A publication Critical patent/CN119836403A/zh
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/095—Glass compositions containing silica with 40% to 90% silica, by weight containing rare earths
    • 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

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Glass Compositions (AREA)
CN202380063959.7A 2022-09-08 2023-09-08 磁记录介质基板用玻璃、磁记录介质基板和磁记录再生装置 Pending CN119836403A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2022-143093 2022-09-08
JP2022143093 2022-09-08
PCT/JP2023/032919 WO2024053741A1 (ja) 2022-09-08 2023-09-08 磁気記録媒体基板用ガラス、磁気記録媒体基板および磁気記録再生装置

Publications (1)

Publication Number Publication Date
CN119836403A true CN119836403A (zh) 2025-04-15

Family

ID=90191306

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202380063959.7A Pending CN119836403A (zh) 2022-09-08 2023-09-08 磁记录介质基板用玻璃、磁记录介质基板和磁记录再生装置

Country Status (4)

Country Link
EP (1) EP4585575A1 (https=)
JP (2) JP7766206B2 (https=)
CN (1) CN119836403A (https=)
WO (1) WO2024053741A1 (https=)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000313634A (ja) * 1999-02-25 2000-11-14 Nippon Sheet Glass Co Ltd ガラス組成物およびその製造方法、ならびにそれを用いた情報記録媒体用基板、情報記録媒体および情報記録装置
JP3995902B2 (ja) 2001-05-31 2007-10-24 Ｈｏｙａ株式会社 情報記録媒体用ガラス基板及びそれを用いた磁気情報記録媒体
JP5699434B2 (ja) * 2009-04-02 2015-04-08 旭硝子株式会社 情報記録媒体基板用ガラス、情報記録媒体用ガラス基板および磁気ディスク
EP2465828A4 (en) 2009-08-10 2014-03-26 Hoya Corp GLASS FOR MAGNETIC RECORDING MEDIUM SUBSTRATE, MAGNETIC RECORDING MEDIUM SUBSTRATE AND METHOD FOR PRODUCING THE SAME, AND MAGNETIC RECORDING MEDIUM
WO2017204224A1 (ja) * 2016-05-27 2017-11-30 旭硝子株式会社 磁気記録媒体用ガラス、磁気記録媒体用ガラス基板および磁気ディスク
US11081133B2 (en) * 2016-11-14 2021-08-03 Hoya Corporation Glass for magnetic recording medium substrate, magnetic recording medium substrate, magnetic recording medium and glass spacer for magnetic recording and reproducing apparatus
MY204452A (en) * 2018-05-16 2024-08-29 Hoya Corp Glass for magnetic recording medium substrate, magnetic recording medium substrate, magnetic recording medium, glass spacer for magnetic recording and reproducing apparatus, and magnetic recording and reproducing apparatus
CN120441191A (zh) * 2019-07-22 2025-08-08 Hoya株式会社 玻璃、磁记录介质基板、磁记录介质、磁记录再生装置用玻璃间隔物和磁记录再生装置
JP7392909B2 (ja) * 2019-11-25 2023-12-06 日本電気硝子株式会社 磁気記録媒体用ガラス基板及びそれを用いた磁気記録装置
CN114787093A (zh) * 2019-12-13 2022-07-22 豪雅株式会社 磁记录介质基板用或磁记录再生装置用玻璃间隔物用的玻璃、磁记录介质基板、磁记录介质、磁记录再生装置用玻璃间隔物和磁记录再生装置

Also Published As

Publication number Publication date
JP7766206B2 (ja) 2025-11-07
EP4585575A1 (en) 2025-07-16
JPWO2024053741A1 (https=) 2024-03-14
JP2026021401A (ja) 2026-02-10
WO2024053741A1 (ja) 2024-03-14

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