CN118284935A - 磁记录介质用玻璃基板、磁记录介质用玻璃盘、磁记录介质和玻璃盘的制造方法 - Google Patents

磁记录介质用玻璃基板、磁记录介质用玻璃盘、磁记录介质和玻璃盘的制造方法 Download PDF

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Publication number
CN118284935A
CN118284935A CN202280077269.2A CN202280077269A CN118284935A CN 118284935 A CN118284935 A CN 118284935A CN 202280077269 A CN202280077269 A CN 202280077269A CN 118284935 A CN118284935 A CN 118284935A
Authority
CN
China
Prior art keywords
recording medium
magnetic recording
glass
glass substrate
medium according
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
CN202280077269.2A
Other languages
English (en)
Chinese (zh)
Inventor
三和晋吉
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.)
Nippon Electric Glass Co Ltd
Original Assignee
Nippon Electric Glass Co Ltd
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 Nippon Electric Glass Co Ltd filed Critical Nippon Electric Glass Co Ltd
Publication of CN118284935A publication Critical patent/CN118284935A/zh
Pending legal-status Critical Current

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
    • 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
    • C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
    • 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
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk 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
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (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)
CN202280077269.2A 2021-12-01 2022-11-29 磁记录介质用玻璃基板、磁记录介质用玻璃盘、磁记录介质和玻璃盘的制造方法 Pending CN118284935A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2021195306 2021-12-01
JP2021-195306 2021-12-01
PCT/JP2022/044030 WO2023100893A1 (ja) 2021-12-01 2022-11-29 磁気記録媒体用ガラス基板、磁気記録媒体用ガラスディスク、磁気記録媒体及びガラスディスクの製造方法

Publications (1)

Publication Number Publication Date
CN118284935A true CN118284935A (zh) 2024-07-02

Family

ID=86612208

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202280077269.2A Pending CN118284935A (zh) 2021-12-01 2022-11-29 磁记录介质用玻璃基板、磁记录介质用玻璃盘、磁记录介质和玻璃盘的制造方法

Country Status (4)

Country Link
US (1) US20250263325A1 (https=)
JP (1) JPWO2023100893A1 (https=)
CN (1) CN118284935A (https=)
WO (1) WO2023100893A1 (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025143137A1 (ja) * 2023-12-27 2025-07-03 Hoya株式会社 情報記録媒体用ディスク

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017052661A (ja) * 2015-09-08 2017-03-16 旭硝子株式会社 磁気記録媒体用ガラス、磁気記録媒体用化学強化ガラス、磁気記録媒体用ガラス基板、及び磁気記録媒体
MY208527A (en) * 2018-08-07 2025-05-14 Hoya Corp Substrate for magnetic disk and magnetic disk
CN114096491A (zh) * 2019-06-19 2022-02-25 康宁公司 含氧化钇的玻璃基板
JP7506848B2 (ja) * 2019-11-05 2024-06-27 日本電気硝子株式会社 紫外線透過ガラス
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

Also Published As

Publication number Publication date
JPWO2023100893A1 (https=) 2023-06-08
US20250263325A1 (en) 2025-08-21
WO2023100893A1 (ja) 2023-06-08

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