JP2001250219A - 磁気記録媒体 - Google Patents

磁気記録媒体

Info

Publication number
JP2001250219A
JP2001250219A JP2000062191A JP2000062191A JP2001250219A JP 2001250219 A JP2001250219 A JP 2001250219A JP 2000062191 A JP2000062191 A JP 2000062191A JP 2000062191 A JP2000062191 A JP 2000062191A JP 2001250219 A JP2001250219 A JP 2001250219A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic layer
layer
powder
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.)
Abandoned
Application number
JP2000062191A
Other languages
English (en)
Japanese (ja)
Other versions
JP2001250219A5 (enExample
Inventor
Yasushi Naoe
康司 直江
Kiyomi Ejiri
清美 江尻
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP2000062191A priority Critical patent/JP2001250219A/ja
Priority to US09/798,807 priority patent/US6602576B2/en
Priority to EP01105331A priority patent/EP1132897A1/en
Publication of JP2001250219A publication Critical patent/JP2001250219A/ja
Publication of JP2001250219A5 publication Critical patent/JP2001250219A5/ja
Abandoned legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/68Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70Record 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
    • G11B5/714Record 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/68Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70Record 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/68Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70Record 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
    • G11B5/702Record 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 bonding agent
    • G11B5/7021Record 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 bonding agent containing a polyurethane or a polyisocyanate
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/68Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70Record 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
    • G11B5/706Record 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
    • G11B5/70605Record 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 metals or alloys
    • G11B5/70621Record 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 metals or alloys containing Co metal or alloys
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/73Base 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
    • G11B5/733Base 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
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/90Magnetic feature
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495Thickness [relative or absolute]
    • Y10T428/24967Absolute thicknesses specified
    • Y10T428/24975No layer or component greater than 5 mils thick
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/26Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264Up to 3 mils
    • Y10T428/2651 mil or less
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31551Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31609Particulate metal or metal compound-containing

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Magnetic Record Carriers (AREA)
JP2000062191A 2000-03-07 2000-03-07 磁気記録媒体 Abandoned JP2001250219A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2000062191A JP2001250219A (ja) 2000-03-07 2000-03-07 磁気記録媒体
US09/798,807 US6602576B2 (en) 2000-03-07 2001-03-02 Magnetic recording medium
EP01105331A EP1132897A1 (en) 2000-03-07 2001-03-07 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000062191A JP2001250219A (ja) 2000-03-07 2000-03-07 磁気記録媒体

Publications (2)

Publication Number Publication Date
JP2001250219A true JP2001250219A (ja) 2001-09-14
JP2001250219A5 JP2001250219A5 (enExample) 2005-11-04

Family

ID=18582232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000062191A Abandoned JP2001250219A (ja) 2000-03-07 2000-03-07 磁気記録媒体

Country Status (3)

Country Link
US (1) US6602576B2 (enExample)
EP (1) EP1132897A1 (enExample)
JP (1) JP2001250219A (enExample)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040191573A1 (en) * 2003-03-31 2004-09-30 Fuller Richard M. Magnetic recording media exhibiting decreased tape dropout performance
US20040191574A1 (en) * 2003-03-31 2004-09-30 Fuller Richard M. Magnetic recording media having increased skirt signal-to-noise and carrier-to-noise ratios
US20040191570A1 (en) * 2003-03-31 2004-09-30 Edwards Bruce H. Magnetic recording media having increased high density broadband signal-to-noise ratio
JP2004362714A (ja) * 2003-06-06 2004-12-24 Fuji Photo Film Co Ltd 磁気記録媒体
JP2005203024A (ja) * 2004-01-15 2005-07-28 Fuji Photo Film Co Ltd 磁気記録媒体及びその製造方法
JP2006031751A (ja) * 2004-07-12 2006-02-02 Fuji Photo Film Co Ltd 磁気記録媒体
US20060159963A1 (en) * 2005-01-14 2006-07-20 Imation Corp. Magnetic recording medium having low broadband noise
US20100143751A1 (en) * 2005-01-14 2010-06-10 Imation Corp. Magnetic recording media having low broadband noise
US20060166042A1 (en) * 2005-01-24 2006-07-27 Seftick Daniel M Magnetic recording medium having high squareness
KR101545371B1 (ko) * 2008-04-21 2015-08-18 데이진 가부시키가이샤 2 축 배향 적층 필름
JP7112976B2 (ja) * 2019-03-06 2022-08-04 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

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58104666A (ja) 1981-12-16 1983-06-22 Fuji Photo Film Co Ltd 塗布装置
JPS60238179A (ja) 1984-05-14 1985-11-27 Fuji Photo Film Co Ltd 塗布装置
JPH067944B2 (ja) 1985-10-18 1994-02-02 富士写真フイルム株式会社 塗布方法
JPH0677712B2 (ja) 1986-09-30 1994-10-05 富士写真フイルム株式会社 塗布装置
JPH0693297B2 (ja) 1987-01-30 1994-11-16 富士写真フイルム株式会社 磁気記録媒体
JPS63191315A (ja) 1987-02-04 1988-08-08 Fuji Photo Film Co Ltd 磁気記録媒体
JP2530202B2 (ja) 1988-03-18 1996-09-04 富士写真フイルム株式会社 塗布方法
JPH0649171B2 (ja) 1988-07-04 1994-06-29 富士写真フイルム株式会社 塗布方法
JPH02174965A (ja) 1988-12-28 1990-07-06 Fuji Photo Film Co Ltd 重層塗布方法及び装置
JP2581975B2 (ja) 1989-04-05 1997-02-19 富士写真フイルム株式会社 塗布装置
DE69213115T3 (de) 1991-04-25 2005-05-19 Fuji Photo Film Co., Ltd., Minami-Ashigara Magnetische Aufzeichnungsträger
JP2566096B2 (ja) 1992-04-14 1996-12-25 富士写真フイルム株式会社 磁気記録媒体
EP0945857B1 (en) * 1994-07-08 2006-11-29 Fuji Photo Film Co., Ltd. Magnetic recording medium
JP3669520B2 (ja) * 1995-03-17 2005-07-06 富士写真フイルム株式会社 磁気記録媒体
EP0865034B1 (en) * 1997-03-14 2006-06-07 Fuji Photo Film Co., Ltd. Magnetic recording medium
JP4182232B2 (ja) 1997-06-05 2008-11-19 Dowaエレクトロニクス株式会社 強磁性粉末
JP3726995B2 (ja) 1998-08-21 2005-12-14 リコープリンティングシステムズ株式会社 インクジェット記録ヘッドの製造方法および記録装置

Also Published As

Publication number Publication date
US20010044037A1 (en) 2001-11-22
US6602576B2 (en) 2003-08-05
EP1132897A1 (en) 2001-09-12

Similar Documents

Publication Publication Date Title
JP3106271B2 (ja) 磁気記録媒体
JP2849514B2 (ja) 磁気記録媒体
JP2001250219A (ja) 磁気記録媒体
JP2946262B2 (ja) 磁気記録媒体
JP2010250922A (ja) 磁気記録媒体、磁気記録媒体用結合剤およびポリウレタン樹脂
JP2009099240A (ja) 磁気記録媒体の製造方法および磁気記録媒体
US20090098414A1 (en) Method of manufacturing magnetic recording medium and magnetic recording medium manufactured by the same
JPH08255334A (ja) 磁気記録媒体
JP2002260211A (ja) 磁気記録媒体
JP2001067640A (ja) 磁気記録媒体
JP2007091517A (ja) 六方晶マグネトプランバイト型フェライト、その製造方法および磁気記録媒体
US6428884B1 (en) Magnetic recording medium
JPH11185240A (ja) 磁気記録媒体
JPH09231526A (ja) 磁気記録装置用クリーニング媒体
JP2001067639A (ja) 磁気記録媒体
JP2000268344A (ja) 磁気記録媒体
JP2002208130A (ja) 磁気記録媒体
JPH09115130A (ja) 磁気記録媒体
JP2002183929A (ja) 磁気記録媒体
JP2002140808A (ja) 磁気記録媒体
JP3498867B2 (ja) 磁気記録媒体
JP2002251711A (ja) 磁気記録媒体
JP2002329309A (ja) 磁気記録媒体
JP2003123226A (ja) 磁気記録媒体
JP3442146B2 (ja) 磁気記録媒体

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050915

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050915

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20061213

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070903

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20071002

A762 Written abandonment of application

Free format text: JAPANESE INTERMEDIATE CODE: A762

Effective date: 20071129