JP7736058B2 - 磁気記録媒体 - Google Patents

磁気記録媒体

Info

Publication number
JP7736058B2
JP7736058B2 JP2023510592A JP2023510592A JP7736058B2 JP 7736058 B2 JP7736058 B2 JP 7736058B2 JP 2023510592 A JP2023510592 A JP 2023510592A JP 2023510592 A JP2023510592 A JP 2023510592A JP 7736058 B2 JP7736058 B2 JP 7736058B2
Authority
JP
Japan
Prior art keywords
particles
magnetic
recording medium
magnetic recording
less
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
JP2023510592A
Other languages
English (en)
Japanese (ja)
Other versions
JPWO2022209316A1 (https=
Inventor
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 JPWO2022209316A1 publication Critical patent/JPWO2022209316A1/ja
Application granted granted Critical
Publication of JP7736058B2 publication Critical patent/JP7736058B2/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
    • G11B5/68—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
    • 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
    • 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
    • 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
    • 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
    • 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

Landscapes

  • Magnetic Record Carriers (AREA)
JP2023510592A 2021-03-31 2022-02-08 磁気記録媒体 Active JP7736058B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2021059110 2021-03-31
JP2021059110 2021-03-31
PCT/JP2022/004840 WO2022209316A1 (ja) 2021-03-31 2022-02-08 磁気記録媒体

Publications (2)

Publication Number Publication Date
JPWO2022209316A1 JPWO2022209316A1 (https=) 2022-10-06
JP7736058B2 true JP7736058B2 (ja) 2025-09-09

Family

ID=83455884

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2023510592A Active JP7736058B2 (ja) 2021-03-31 2022-02-08 磁気記録媒体

Country Status (3)

Country Link
US (1) US12367904B2 (https=)
JP (1) JP7736058B2 (https=)
WO (1) WO2022209316A1 (https=)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12347457B2 (en) * 2021-03-31 2025-07-01 Sony Group Corporation Cartridge including magnetic tape including magnetic layer including protrusions on surface thereof
US12597441B2 (en) * 2021-07-21 2026-04-07 Sony Group Corporation Magnetic recording medium including fatty ester and fatty acid ester
WO2023002723A1 (ja) * 2021-07-21 2023-01-26 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
WO2024241930A1 (ja) * 2023-05-24 2024-11-28 ソニーグループ株式会社 リーダーテープ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000285432A (ja) 1999-03-30 2000-10-13 Sony Corp 磁気記録媒体
US20050079389A1 (en) 2003-09-16 2005-04-14 Fuji Photo Film Co., Ltd. Magnetic recording medium
US20100246073A1 (en) 2009-03-27 2010-09-30 Fujifilm Corporation Magnetic recording medium, magnetic signal reproduction system and magnetic signal reproduction method
JP2017068884A (ja) 2015-09-30 2017-04-06 富士フイルム株式会社 磁気記録媒体、磁気信号再生装置、および磁気記録媒体の製造方法
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

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09128739A (ja) * 1995-11-02 1997-05-16 Fuji Photo Film Co Ltd 磁気記録媒体
JP5762592B2 (ja) * 2013-03-22 2015-08-12 富士フイルム株式会社 磁気記録媒体
JP6058607B2 (ja) * 2014-09-30 2017-01-11 富士フイルム株式会社 磁気テープおよびその製造方法
JP6785167B2 (ja) * 2016-03-14 2020-11-18 マクセルホールディングス株式会社 磁気記録媒体
JP6433449B2 (ja) * 2016-03-22 2018-12-05 富士フイルム株式会社 磁気テープおよび磁気テープ装置
JP6737415B2 (ja) 2018-02-16 2020-08-12 ソニー株式会社 磁気記録テープとその製造方法、磁気記録テープカートリッジ
JP7277393B2 (ja) * 2020-01-24 2023-05-18 富士フイルム株式会社 磁気記録媒体、磁気記録再生装置、磁気テープカートリッジおよび磁気テープカートリッジ群
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
WO2023002723A1 (ja) * 2021-07-21 2023-01-26 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
WO2023002670A1 (ja) * 2021-07-21 2023-01-26 ソニーグループ株式会社 磁気記録媒体
JP7762205B2 (ja) * 2021-07-26 2025-10-29 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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000285432A (ja) 1999-03-30 2000-10-13 Sony Corp 磁気記録媒体
US20050079389A1 (en) 2003-09-16 2005-04-14 Fuji Photo Film Co., Ltd. Magnetic recording medium
US20100246073A1 (en) 2009-03-27 2010-09-30 Fujifilm Corporation Magnetic recording medium, magnetic signal reproduction system and magnetic signal reproduction method
JP2017068884A (ja) 2015-09-30 2017-04-06 富士フイルム株式会社 磁気記録媒体、磁気信号再生装置、および磁気記録媒体の製造方法
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
US12367904B2 (en) 2025-07-22
JPWO2022209316A1 (https=) 2022-10-06
WO2022209316A1 (ja) 2022-10-06
US20240170013A1 (en) 2024-05-23

Similar Documents

Publication Publication Date Title
JP6753544B1 (ja) 磁気記録媒体
JP7736058B2 (ja) 磁気記録媒体
JP2021034076A (ja) 磁気記録媒体
JP7358966B2 (ja) 磁気記録媒体
JP7794200B2 (ja) 磁気記録媒体およびカートリッジ
JP7512782B2 (ja) 磁気記録媒体
JP7782561B2 (ja) 磁気記録媒体
JP2021061075A (ja) 磁気記録媒体
JP7782549B2 (ja) 磁気記録媒体
JP7521398B2 (ja) 磁気記録媒体
US20260065932A1 (en) Magnetic recording medium
JP2021061080A (ja) 磁気記録媒体
JP6969699B2 (ja) 磁気記録媒体
US11581014B2 (en) Magnetic recording medium
JP6819836B1 (ja) 磁気記録媒体
JP2021163515A5 (https=)
JP7754178B2 (ja) 磁気記録媒体
JP7823663B2 (ja) 磁気記録媒体
JP2021034111A (ja) 磁気記録媒体
JP6766988B1 (ja) 磁気記録媒体
WO2024162050A1 (ja) 磁気記録媒体
WO2025100172A1 (ja) 磁気記録媒体
JP2021061081A (ja) 磁気記録媒体
JP2021034110A (ja) 磁気記録媒体

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20241219

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20250729

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20250811

R150 Certificate of patent or registration of utility model

Ref document number: 7736058

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150