JP6860115B1 - 磁気記録媒体 - Google Patents

磁気記録媒体 Download PDF

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Publication number
JP6860115B1
JP6860115B1 JP2020210080A JP2020210080A JP6860115B1 JP 6860115 B1 JP6860115 B1 JP 6860115B1 JP 2020210080 A JP2020210080 A JP 2020210080A JP 2020210080 A JP2020210080 A JP 2020210080A JP 6860115 B1 JP6860115 B1 JP 6860115B1
Authority
JP
Japan
Prior art keywords
recording medium
magnetic
magnetic recording
less
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
JP2020210080A
Other languages
English (en)
Japanese (ja)
Other versions
JP2021163513A (ja
Inventor
泰啓 榎本
泰啓 榎本
潤 寺川
潤 寺川
山鹿　実
実 山鹿
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
Original Assignee
Sony 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
Priority claimed from JP2020542169A external-priority patent/JP6819836B1/ja
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP2021051108A priority Critical patent/JP6912015B1/ja
Application granted granted Critical
Publication of JP6860115B1 publication Critical patent/JP6860115B1/ja
Publication of JP2021163513A publication Critical patent/JP2021163513A/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/43—Control or regulation of mechanical tension of record carrier, e.g. tape tension
    • 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
    • G11B23/037—Single reels or spools
    • 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
    • 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
    • G11B23/30—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 with provision for auxiliary signals
    • 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
    • G11B5/714—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
    • 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
    • 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
    • G11B5/852—Orientation in a magnetic field
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Optical Head (AREA)
JP2020210080A 2020-03-31 2020-12-18 磁気記録媒体 Active JP6860115B1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021051108A JP6912015B1 (ja) 2020-03-31 2021-03-25 磁気記録媒体

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2020062425 2020-03-31
JP2020062425 2020-03-31
JP2020542169A JP6819836B1 (ja) 2020-03-31 2020-07-20 磁気記録媒体

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2020542169A Division JP6819836B1 (ja) 2020-03-31 2020-07-20 磁気記録媒体

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2021051108A Division JP6912015B1 (ja) 2020-03-31 2021-03-25 磁気記録媒体

Publications (2)

Publication Number Publication Date
JP6860115B1 true JP6860115B1 (ja) 2021-04-14
JP2021163513A JP2021163513A (ja) 2021-10-11

Family

ID=75378149

Family Applications (4)

Application Number Title Priority Date Filing Date
JP2020210080A Active JP6860115B1 (ja) 2020-03-31 2020-12-18 磁気記録媒体
JP2021051108A Expired - Fee Related JP6912015B1 (ja) 2020-03-31 2021-03-25 磁気記録媒体
JP2021111364A Expired - Fee Related JP6969699B2 (ja) 2020-03-31 2021-07-05 磁気記録媒体
JP2021166700A Pending JP2022003603A (ja) 2020-03-31 2021-10-11 磁気記録媒体

Family Applications After (3)

Application Number Title Priority Date Filing Date
JP2021051108A Expired - Fee Related JP6912015B1 (ja) 2020-03-31 2021-03-25 磁気記録媒体
JP2021111364A Expired - Fee Related JP6969699B2 (ja) 2020-03-31 2021-07-05 磁気記録媒体
JP2021166700A Pending JP2022003603A (ja) 2020-03-31 2021-10-11 磁気記録媒体

Country Status (4)

Country Link
US (1) US20230119551A1 (enExample)
JP (4) JP6860115B1 (enExample)
DE (1) DE112020007016T5 (enExample)
WO (1) WO2021199453A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021163515A (ja) * 2020-03-31 2021-10-11 ソニーグループ株式会社 磁気記録媒体

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2026140636A1 (ja) * 2024-12-26 2026-07-02 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

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0744858A (ja) * 1993-07-30 1995-02-14 Victor Co Of Japan Ltd 記録再生用磁気記録媒体及び接触転写マザーテープ用磁気記録媒体
JP2002251710A (ja) * 2001-02-22 2002-09-06 Fuji Photo Film Co Ltd 磁気記録媒体及びその製造方法
JP2002342913A (ja) * 2001-05-17 2002-11-29 Sony Corp 磁気記録媒体
KR101397738B1 (ko) * 2008-06-18 2014-05-20 인터내셔널 비지네스 머신즈 코포레이션 테이프 드라이브의 서보 제어
JP5315374B2 (ja) * 2011-03-25 2013-10-16 富士フイルム株式会社 磁気テープおよびその製造方法、ならびに磁気記録装置
JP6205871B2 (ja) * 2013-06-05 2017-10-04 ソニー株式会社 磁気記録媒体
WO2016092744A1 (ja) * 2014-12-12 2016-06-16 ソニー株式会社 磁性粉末およびその製造方法、ならびに磁気記録媒体
JP6610824B1 (ja) * 2019-04-05 2019-11-27 ソニー株式会社 カートリッジおよびカートリッジメモリ
JP6819836B1 (ja) * 2020-03-31 2021-01-27 ソニー株式会社 磁気記録媒体
US20230119551A1 (en) * 2020-03-31 2023-04-20 Sony Group Corporation Magnetic recording medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021163515A (ja) * 2020-03-31 2021-10-11 ソニーグループ株式会社 磁気記録媒体

Also Published As

Publication number Publication date
JP2021163515A (ja) 2021-10-11
JP6969699B2 (ja) 2021-11-24
JP2021163514A (ja) 2021-10-11
DE112020007016T5 (de) 2023-01-19
WO2021199453A1 (ja) 2021-10-07
JP2021163513A (ja) 2021-10-11
US20230119551A1 (en) 2023-04-20
JP2022003603A (ja) 2022-01-11
JP6912015B1 (ja) 2021-07-28

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