JP2003317231A - 磁気記録媒体 - Google Patents

磁気記録媒体

Info

Publication number
JP2003317231A
JP2003317231A JP2002113872A JP2002113872A JP2003317231A JP 2003317231 A JP2003317231 A JP 2003317231A JP 2002113872 A JP2002113872 A JP 2002113872A JP 2002113872 A JP2002113872 A JP 2002113872A JP 2003317231 A JP2003317231 A JP 2003317231A
Authority
JP
Japan
Prior art keywords
magnetic
powder
layer
ferromagnetic
nonmagnetic
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
JP2002113872A
Other languages
English (en)
Japanese (ja)
Other versions
JP2003317231A5 (enExample
Inventor
Katsuhiko Meguro
克彦 目黒
Masatoshi Takahashi
昌敏 高橋
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 JP2002113872A priority Critical patent/JP2003317231A/ja
Priority to US10/413,369 priority patent/US6855412B2/en
Publication of JP2003317231A publication Critical patent/JP2003317231A/ja
Publication of JP2003317231A5 publication Critical patent/JP2003317231A5/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
    • G11B5/706Record 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
    • G11B5/70626Record 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
    • G11B5/70642Record 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
    • G11B5/70678Ferrites
    • 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
    • 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
    • G11B5/739Magnetic recording media substrates
    • G11B5/73911Inorganic substrates
    • G11B5/73913Composites or coated substrates
    • 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
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/251Mica
    • 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
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256Heavy metal or aluminum or compound thereof
    • 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
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256Heavy metal or aluminum or compound thereof
    • Y10T428/257Iron oxide or aluminum oxide
    • 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
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/259Silicic material
    • 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
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991Coated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Magnetic Record Carriers (AREA)
JP2002113872A 2002-04-16 2002-04-16 磁気記録媒体 Abandoned JP2003317231A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2002113872A JP2003317231A (ja) 2002-04-16 2002-04-16 磁気記録媒体
US10/413,369 US6855412B2 (en) 2002-04-16 2003-04-15 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002113872A JP2003317231A (ja) 2002-04-16 2002-04-16 磁気記録媒体

Publications (2)

Publication Number Publication Date
JP2003317231A true JP2003317231A (ja) 2003-11-07
JP2003317231A5 JP2003317231A5 (enExample) 2005-08-25

Family

ID=29533497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002113872A Abandoned JP2003317231A (ja) 2002-04-16 2002-04-16 磁気記録媒体

Country Status (2)

Country Link
US (1) US6855412B2 (enExample)
JP (1) JP2003317231A (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006079711A (ja) * 2004-09-09 2006-03-23 Fuji Photo Film Co Ltd 磁気ディスクカートリッジ
TWI408104B (zh) * 2005-03-18 2013-09-11 Sumitomo Chemical Co 微細α-氧化鋁粒子之製造方法
WO2007074913A1 (en) * 2005-12-26 2007-07-05 Showa Denko K.K. Magentic recording medium and magnetic recording and reproducing device
JP2007188613A (ja) * 2006-01-16 2007-07-26 Fujifilm Corp 磁気記録媒体及びその製造方法
JP6291511B2 (ja) * 2015-01-22 2018-03-14 Dowaエレクトロニクス株式会社 磁気記録媒体用磁性粉

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0235926B1 (en) * 1986-01-31 1994-04-06 Toray Industries, Inc. Composite film and antistatic composite film
DE69630771T2 (de) * 1995-09-26 2004-09-23 Ec-Showa Denko K.K. Verfahren zur herstellung einer harzzusammensetzung die anorganischen füllstoff enthält
DE69731465D1 (de) * 1996-05-13 2004-12-09 Kaneka Corp Thermoplastische harz-zusammensetzung enthaltend ein mit einem silan behandelten mehrschichtigen phyllosilicat und verfahren zu deren herstellung
US6432503B2 (en) * 1997-03-31 2002-08-13 Fuji Photo Film Co., Ltd. Magnetic recording medium
US6548587B1 (en) * 1998-12-07 2003-04-15 University Of South Carolina Research Foundation Polyamide composition comprising a layered clay material modified with an alkoxylated onium compound
JP2000336186A (ja) * 1999-05-31 2000-12-05 Toray Ind Inc 芳香族ポリアミドフィルムとその製造方法及びそれを用いた磁気記録媒体と磁気テープ
US6339121B1 (en) * 2000-03-14 2002-01-15 The Research Foundation At State University Of New York Compatibilizer for immiscible polymer blends
JP2001297423A (ja) * 2000-04-10 2001-10-26 Fuji Photo Film Co Ltd 磁気記録媒体
BR0111333A (pt) * 2000-05-30 2003-06-03 Univ South Carolina Res Found Nanocompósito de polìmero-argila, artigo, e, processo para preparar um nanocompósito de polìmero-argila

Also Published As

Publication number Publication date
US6855412B2 (en) 2005-02-15
US20030219628A1 (en) 2003-11-27

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