CN118435279A - 磁盘用基板和使用了该磁盘用基板的磁盘 - Google Patents

磁盘用基板和使用了该磁盘用基板的磁盘 Download PDF

Info

Publication number
CN118435279A
CN118435279A CN202380015359.3A CN202380015359A CN118435279A CN 118435279 A CN118435279 A CN 118435279A CN 202380015359 A CN202380015359 A CN 202380015359A CN 118435279 A CN118435279 A CN 118435279A
Authority
CN
China
Prior art keywords
grinding
disk
disk substrate
magnetic disk
substrate
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
CN202380015359.3A
Other languages
English (en)
Chinese (zh)
Inventor
畠山英之
东藤慎平
北胁高太郎
滝口浩一郎
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.)
Furukawa Electric Co Ltd
UACJ Corp
Original Assignee
Furukawa Electric Co Ltd
UACJ 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 Furukawa Electric Co Ltd, UACJ Corp filed Critical Furukawa Electric Co Ltd
Publication of CN118435279A publication Critical patent/CN118435279A/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
    • G11B5/735—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 characterised by the back layer
    • G11B5/7356—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 characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2
    • G11B5/7358—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 characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2 specially adapted for achieving a specific property, e.g. average roughness [Ra]
    • 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
    • G11B5/62—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
    • G11B5/74—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)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Record Carriers (AREA)
CN202380015359.3A 2022-01-11 2023-01-10 磁盘用基板和使用了该磁盘用基板的磁盘 Pending CN118435279A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2022-002122 2022-01-11
JP2022002122 2022-01-11
PCT/JP2023/000342 WO2023136242A1 (ja) 2022-01-11 2023-01-10 磁気ディスク用基板及びこれを用いた磁気ディスク

Publications (1)

Publication Number Publication Date
CN118435279A true CN118435279A (zh) 2024-08-02

Family

ID=87279116

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202380015359.3A Pending CN118435279A (zh) 2022-01-11 2023-01-10 磁盘用基板和使用了该磁盘用基板的磁盘

Country Status (4)

Country Link
US (1) US20240355357A1 (https=)
JP (1) JP7717846B2 (https=)
CN (1) CN118435279A (https=)
WO (1) WO2023136242A1 (https=)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07226044A (ja) * 1994-02-08 1995-08-22 Sony Corp 磁気ディスク
CN104641415B (zh) 2012-10-31 2018-06-01 Hoya株式会社 磁盘用玻璃基板的制造方法以及磁盘的制造方法
MY200214A (en) 2017-09-29 2023-12-14 Hoya Corp Glass spacer and hard disk drive apparatus
MY208527A (en) 2018-08-07 2025-05-14 Hoya Corp Substrate for magnetic disk and magnetic disk
JP7037600B2 (ja) 2020-07-03 2022-03-16 株式会社Uacj 磁気ディスク用基板及び当該磁気ディスク用基板を用いた磁気ディスク

Also Published As

Publication number Publication date
JP7717846B2 (ja) 2025-08-04
JPWO2023136242A1 (https=) 2023-07-20
WO2023136242A1 (ja) 2023-07-20
US20240355357A1 (en) 2024-10-24

Similar Documents

Publication Publication Date Title
JP5662423B2 (ja) 磁気記録媒体ガラス基板用ガラスブランクの製造方法、磁気記録媒体ガラス基板の製造方法および磁気記録媒体の製造方法
JP5421443B2 (ja) 磁気ディスク用ガラス基板の製造方法および磁気ディスク
JP5356606B2 (ja) 磁気ディスク用ガラス基板の製造方法
WO2010001844A1 (ja) 磁気ディスク用基板及びその製造方法並びに磁気ディスク
JP2020107382A (ja) 磁気記録媒体用基板、磁気記録媒体、ハードディスクドライブ
CN110431627A (zh) 磁盘用基板和磁盘
WO2014136751A1 (ja) 情報記録媒体用ガラス基板および情報記録媒体
JP2020107383A (ja) 磁気記録媒体用基板、磁気記録媒体、ハードディスクドライブ
JP5661950B2 (ja) 磁気ディスク用ガラス基板の製造方法
WO2013145503A1 (ja) Ｈｄｄ用ガラス基板の製造方法
JP5977520B2 (ja) 磁気ディスク用ガラス基板の製造方法および磁気ディスク用ガラス基板
JP2014188668A (ja) ガラス基板の製造方法
CN118435279A (zh) 磁盘用基板和使用了该磁盘用基板的磁盘
JP2012214375A (ja) 磁気ディスク用板状ガラス素材の製造方法、磁気ディスク用ガラス基板の製造方法
US20240371404A1 (en) Substrate for magnetic disk, manufacturing method thereof, and magnetic disk
JP5476276B2 (ja) 磁気記録媒体ガラス基板用ガラスブランクの製造方法、磁気記録媒体ガラス基板製造方法、磁気記録媒体製造方法、磁気記録媒体ガラス基板用ガラスブランクの製造装置
JP5839818B2 (ja) 磁気ディスク用ガラス基板の製造方法
JP5015184B2 (ja) 情報記録媒体用ガラスブランク、情報記録媒体用基板の製造方法、および、情報記録媒体の製造方法
JP7113157B1 (ja) 磁気ディスク及び磁気ディスク用基板
JP6170557B2 (ja) 磁気ディスク用ガラス基板の製造方法、磁気ディスクの製造方法、研削砥石
JP2010179395A (ja) ガラス基板の製造方法
JP2008226407A (ja) 磁気ディスク用基板の製造方法および化学強化装置ならびに磁気ディスクの製造方法
JP3641171B2 (ja) 磁気記録媒体用ガラス基板の製造方法
JP2006095678A (ja) 磁気記録媒体用ガラス基板の研磨方法
JP2019079582A (ja) 磁気記録媒体用アルミニウム合金基板の製造方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination