JP7794200B2 - 磁気記録媒体およびカートリッジ - Google Patents

磁気記録媒体およびカートリッジ

Info

Publication number
JP7794200B2
JP7794200B2 JP2023536623A JP2023536623A JP7794200B2 JP 7794200 B2 JP7794200 B2 JP 7794200B2 JP 2023536623 A JP2023536623 A JP 2023536623A JP 2023536623 A JP2023536623 A JP 2023536623A JP 7794200 B2 JP7794200 B2 JP 7794200B2
Authority
JP
Japan
Prior art keywords
magnetic
particles
magnetic tape
average
height
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
JP2023536623A
Other languages
English (en)
Japanese (ja)
Other versions
JPWO2023002723A1 (https=
Inventor
昇 関口
実 山鹿
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 JPWO2023002723A1 publication Critical patent/JPWO2023002723A1/ja
Application granted granted Critical
Publication of JP7794200B2 publication Critical patent/JP7794200B2/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
    • G11B5/62—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
    • G11B5/733—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 addition of non-magnetic particles
    • 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
    • G11B5/706—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
    • 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
    • G11B5/68—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
    • G11B5/708—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
    • G11B5/7085—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 non-magnetic abrasive 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
    • G11B5/68—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
    • G11B5/73—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
    • G11B5/735—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

  • Magnetic Record Carriers (AREA)
JP2023536623A 2021-07-21 2022-03-31 磁気記録媒体およびカートリッジ Active JP7794200B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2021121070 2021-07-21
JP2021121070 2021-07-21
PCT/JP2022/016806 WO2023002723A1 (ja) 2021-07-21 2022-03-31 磁気記録媒体およびカートリッジ

Publications (2)

Publication Number Publication Date
JPWO2023002723A1 JPWO2023002723A1 (https=) 2023-01-26
JP7794200B2 true JP7794200B2 (ja) 2026-01-06

Family

ID=84979898

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2023536623A Active JP7794200B2 (ja) 2021-07-21 2022-03-31 磁気記録媒体およびカートリッジ

Country Status (3)

Country Link
US (1) US12462840B2 (https=)
JP (1) JP7794200B2 (https=)
WO (1) WO2023002723A1 (https=)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021149680A1 (ja) * 2020-01-21 2021-07-29 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
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
US12597441B2 (en) * 2021-07-21 2026-04-07 Sony Group Corporation Magnetic recording medium including fatty ester and fatty acid ester
US12417784B2 (en) * 2022-03-15 2025-09-16 Sony Group Corporation Magnetic recording medium and cartridge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2014209403A (ja) 2013-03-22 2014-11-06 富士フイルム株式会社 磁気記録媒体
JP2017168178A (ja) 2016-03-14 2017-09-21 日立マクセル株式会社 磁気記録媒体
JP2019050067A (ja) 2017-09-07 2019-03-28 富士フイルム株式会社 磁気記録媒体および磁気記録再生装置
JP6863511B2 (ja) 2020-07-10 2021-04-21 ソニーグループ株式会社 磁気記録媒体、カートリッジおよび記録再生装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6177175B1 (en) * 1997-10-16 2001-01-23 Canon Kabushiki Kaisha Magneto-optical medium utilizing domain wall displacement
JPH11195217A (ja) * 1997-12-26 1999-07-21 Kao Corp 磁気記録媒体およびその製造方法
JP2005092958A (ja) * 2003-09-16 2005-04-07 Fuji Photo Film Co Ltd 磁気記録媒体
JP2008065953A (ja) 2006-09-11 2008-03-21 Fujitsu Ltd 不揮発性半導体記憶装置及びその読み出し方法
WO2021149680A1 (ja) * 2020-01-21 2021-07-29 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
JP7520745B2 (ja) * 2021-02-19 2024-07-23 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
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2014209403A (ja) 2013-03-22 2014-11-06 富士フイルム株式会社 磁気記録媒体
JP2017168178A (ja) 2016-03-14 2017-09-21 日立マクセル株式会社 磁気記録媒体
JP2019050067A (ja) 2017-09-07 2019-03-28 富士フイルム株式会社 磁気記録媒体および磁気記録再生装置
JP6863511B2 (ja) 2020-07-10 2021-04-21 ソニーグループ株式会社 磁気記録媒体、カートリッジおよび記録再生装置

Also Published As

Publication number Publication date
JPWO2023002723A1 (https=) 2023-01-26
WO2023002723A1 (ja) 2023-01-26
US12462840B2 (en) 2025-11-04
US20240331727A1 (en) 2024-10-03

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