JP7782561B2 - 磁気記録媒体 - Google Patents

磁気記録媒体

Info

Publication number
JP7782561B2
JP7782561B2 JP2023536600A JP2023536600A JP7782561B2 JP 7782561 B2 JP7782561 B2 JP 7782561B2 JP 2023536600 A JP2023536600 A JP 2023536600A JP 2023536600 A JP2023536600 A JP 2023536600A JP 7782561 B2 JP7782561 B2 JP 7782561B2
Authority
JP
Japan
Prior art keywords
magnetic
less
particles
magnetic recording
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.)
Active
Application number
JP2023536600A
Other languages
English (en)
Japanese (ja)
Other versions
JPWO2023002670A1 (https=
Inventor
実 山鹿
裕子 鴨下
太 佐々木
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.)
Sony Corp
Sony Group Corp
Original Assignee
Sony Corp
Sony Group 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 Sony Corp, Sony Group Corp filed Critical Sony Corp
Publication of JPWO2023002670A1 publication Critical patent/JPWO2023002670A1/ja
Application granted granted Critical
Publication of JP7782561B2 publication Critical patent/JP7782561B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/04—Magazines; Cassettes for webs or filaments
    • G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
    • G11B23/107—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using one reel or core, one end of the record carrier coming out of the magazine or cassette
    • 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
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • 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
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/7013—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the dispersing agent
    • 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
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/708—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by addition of non-magnetic particles to the layer
    • 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
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/714—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the dimension of the magnetic particles
    • 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
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction
    • G11B5/727—Inorganic carbon protective coating, e.g. graphite, diamond like carbon or doped carbon
    • 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
    • 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
    • G11B5/78—Tape carriers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Magnetic Record Carriers (AREA)
JP2023536600A 2021-07-21 2022-03-08 磁気記録媒体 Active JP7782561B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2021120555 2021-07-21
JP2021120555 2021-07-21
PCT/JP2022/009998 WO2023002670A1 (ja) 2021-07-21 2022-03-08 磁気記録媒体

Publications (2)

Publication Number Publication Date
JPWO2023002670A1 JPWO2023002670A1 (https=) 2023-01-26
JP7782561B2 true JP7782561B2 (ja) 2025-12-09

Family

ID=84979857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2023536600A Active JP7782561B2 (ja) 2021-07-21 2022-03-08 磁気記録媒体

Country Status (3)

Country Link
US (1) US20240290349A1 (https=)
JP (1) JP7782561B2 (https=)
WO (1) WO2023002670A1 (https=)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022209316A1 (ja) * 2021-03-31 2022-10-06 ソニーグループ株式会社 磁気記録媒体
CN120836057A (zh) * 2023-03-29 2025-10-24 富士胶片株式会社 磁带、磁带盒、磁带系统、检测方法及磁带的制造方法
WO2025126629A1 (ja) * 2023-12-11 2025-06-19 富士フイルム株式会社 磁気テープ、磁気テープカートリッジ、磁気テープシステム、検査方法、及び磁気テープの製造方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009146532A (ja) 2007-12-17 2009-07-02 Hitachi Global Storage Technologies Netherlands Bv 垂直磁気記録媒体及び磁気記憶装置
JP2010231843A (ja) 2009-03-27 2010-10-14 Fujifilm Corp 磁気記録媒体、磁気信号再生システムおよび磁気信号再生方法
WO2018131507A1 (ja) 2017-01-13 2018-07-19 ソニー株式会社 磁気記録媒体
JP2018170062A (ja) 2017-03-29 2018-11-01 富士フイルム株式会社 磁気テープ装置、磁気再生方法およびヘッドトラッキングサーボ方法
JP2019003712A (ja) 2017-06-09 2019-01-10 富士フイルム株式会社 磁気記録媒体
JP2020068042A (ja) 2018-10-22 2020-04-30 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置
JP2020123419A (ja) 2019-01-31 2020-08-13 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009146532A (ja) 2007-12-17 2009-07-02 Hitachi Global Storage Technologies Netherlands Bv 垂直磁気記録媒体及び磁気記憶装置
JP2010231843A (ja) 2009-03-27 2010-10-14 Fujifilm Corp 磁気記録媒体、磁気信号再生システムおよび磁気信号再生方法
WO2018131507A1 (ja) 2017-01-13 2018-07-19 ソニー株式会社 磁気記録媒体
JP2018170062A (ja) 2017-03-29 2018-11-01 富士フイルム株式会社 磁気テープ装置、磁気再生方法およびヘッドトラッキングサーボ方法
JP2019003712A (ja) 2017-06-09 2019-01-10 富士フイルム株式会社 磁気記録媒体
JP2020068042A (ja) 2018-10-22 2020-04-30 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置
JP2020123419A (ja) 2019-01-31 2020-08-13 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置

Also Published As

Publication number Publication date
WO2023002670A1 (ja) 2023-01-26
US20240290349A1 (en) 2024-08-29
JPWO2023002670A1 (https=) 2023-01-26

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