JP7782549B2 - 磁気記録媒体 - Google Patents

磁気記録媒体

Info

Publication number
JP7782549B2
JP7782549B2 JP2023510930A JP2023510930A JP7782549B2 JP 7782549 B2 JP7782549 B2 JP 7782549B2 JP 2023510930 A JP2023510930 A JP 2023510930A JP 2023510930 A JP2023510930 A JP 2023510930A JP 7782549 B2 JP7782549 B2 JP 7782549B2
Authority
JP
Japan
Prior art keywords
magnetic
recording medium
less
magnetic recording
layer
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
JP2023510930A
Other languages
English (en)
Japanese (ja)
Other versions
JPWO2022209935A1 (https=
Inventor
颯吾 及川
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 JPWO2022209935A1 publication Critical patent/JPWO2022209935A1/ja
Application granted granted Critical
Publication of JP7782549B2 publication Critical patent/JP7782549B2/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
    • 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
    • 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
    • G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
    • G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
    • 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
    • G11B5/706—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 composition of the magnetic material
    • G11B5/70626—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 composition of the magnetic material containing non-metallic substances
    • G11B5/70642—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 composition of the magnetic material containing non-metallic substances iron oxides
    • 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
    • G11B5/706—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 composition of the magnetic material
    • G11B5/70626—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 composition of the magnetic material containing non-metallic substances
    • G11B5/70642—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 composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70678—Ferrites
    • 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
    • G11B5/84—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
    • G11B2220/00—Record carriers by type
    • G11B2220/60—Solid state media
    • G11B2220/65—Solid state media wherein solid state memory is used for storing indexing information or metadata
    • G11B2220/652—Solid state media wherein solid state memory is used for storing indexing information or metadata said memory being attached to the recording medium
    • G11B2220/655—Memory in cassette [MIC]

Landscapes

  • Magnetic Record Carriers (AREA)
JP2023510930A 2021-03-31 2022-03-17 磁気記録媒体 Active JP7782549B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2021061963 2021-03-31
JP2021061963 2021-03-31
PCT/JP2022/012167 WO2022209935A1 (ja) 2021-03-31 2022-03-17 磁気記録媒体

Publications (2)

Publication Number Publication Date
JPWO2022209935A1 JPWO2022209935A1 (https=) 2022-10-06
JP7782549B2 true JP7782549B2 (ja) 2025-12-09

Family

ID=83459115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2023510930A Active JP7782549B2 (ja) 2021-03-31 2022-03-17 磁気記録媒体

Country Status (3)

Country Link
US (1) US12243571B2 (https=)
JP (1) JP7782549B2 (https=)
WO (1) WO2022209935A1 (https=)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2024090340A1 (https=) * 2022-10-26 2024-05-02
JPWO2024161957A1 (https=) * 2023-01-31 2024-08-08
WO2025173638A1 (ja) * 2024-02-14 2025-08-21 ソニーグループ株式会社 磁気記録媒体およびカートリッジ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000348325A (ja) 1999-06-04 2000-12-15 Sony Corp 磁気記録媒体
JP2001160214A (ja) 1999-09-24 2001-06-12 Hitachi Ltd 磁気記録媒体及び磁気ディスク装置
WO2010001843A1 (ja) 2008-06-30 2010-01-07 Hoya株式会社 磁気ディスク用基板及び磁気ディスク

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0696434B2 (ja) 1987-06-10 1994-11-30 三菱電機株式会社 エレベ−タの運転制御装置
JPH0696434A (ja) * 1992-07-31 1994-04-08 Sony Corp 磁気記録媒体及び磁気記録媒体の評価方法
JPH11203657A (ja) * 1998-01-19 1999-07-30 Mitsubishi Chemical Corp 磁気記録媒体
US6852432B2 (en) 2000-06-30 2005-02-08 Hitachi, Ltd. Magnetic recording media and magnetic disk apparatus
JP2008159259A (ja) 2008-02-13 2008-07-10 Hitachi Maxell Ltd 磁気記録媒体
JP6590105B1 (ja) * 2019-05-08 2019-10-16 ソニー株式会社 磁気記録媒体およびカートリッジ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000348325A (ja) 1999-06-04 2000-12-15 Sony Corp 磁気記録媒体
JP2001160214A (ja) 1999-09-24 2001-06-12 Hitachi Ltd 磁気記録媒体及び磁気ディスク装置
WO2010001843A1 (ja) 2008-06-30 2010-01-07 Hoya株式会社 磁気ディスク用基板及び磁気ディスク

Also Published As

Publication number Publication date
WO2022209935A1 (ja) 2022-10-06
JPWO2022209935A1 (https=) 2022-10-06
US20240371405A1 (en) 2024-11-07
US12243571B2 (en) 2025-03-04

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