JP4534574B2 - 磁気記録媒体 - Google Patents

磁気記録媒体 Download PDF

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Publication number
JP4534574B2
JP4534574B2 JP2004128372A JP2004128372A JP4534574B2 JP 4534574 B2 JP4534574 B2 JP 4534574B2 JP 2004128372 A JP2004128372 A JP 2004128372A JP 2004128372 A JP2004128372 A JP 2004128372A JP 4534574 B2 JP4534574 B2 JP 4534574B2
Authority
JP
Japan
Prior art keywords
radiation
magnetic
layer
powder
acid
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.)
Expired - Fee Related
Application number
JP2004128372A
Other languages
English (en)
Japanese (ja)
Other versions
JP2005310311A (ja
JP2005310311A5 (enExample
Inventor
裕一郎 村山
博司 橋本
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 Corp
Original Assignee
Fujifilm 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 Fujifilm Corp filed Critical Fujifilm Corp
Priority to JP2004128372A priority Critical patent/JP4534574B2/ja
Priority to US11/109,653 priority patent/US7754355B2/en
Publication of JP2005310311A publication Critical patent/JP2005310311A/ja
Publication of JP2005310311A5 publication Critical patent/JP2005310311A5/ja
Application granted granted Critical
Publication of JP4534574B2 publication Critical patent/JP4534574B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G11B5/702—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 bonding agent
    • G11B5/7026—Radiation curable polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • G11B5/733—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
    • 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
    • G11B5/70605—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 metals or alloys
    • 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

Landscapes

  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
JP2004128372A 2004-04-23 2004-04-23 磁気記録媒体 Expired - Fee Related JP4534574B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004128372A JP4534574B2 (ja) 2004-04-23 2004-04-23 磁気記録媒体
US11/109,653 US7754355B2 (en) 2004-04-23 2005-04-20 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004128372A JP4534574B2 (ja) 2004-04-23 2004-04-23 磁気記録媒体

Publications (3)

Publication Number Publication Date
JP2005310311A JP2005310311A (ja) 2005-11-04
JP2005310311A5 JP2005310311A5 (enExample) 2007-04-19
JP4534574B2 true JP4534574B2 (ja) 2010-09-01

Family

ID=35136839

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004128372A Expired - Fee Related JP4534574B2 (ja) 2004-04-23 2004-04-23 磁気記録媒体

Country Status (2)

Country Link
US (1) US7754355B2 (enExample)
JP (1) JP4534574B2 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004185713A (ja) * 2002-12-03 2004-07-02 Fuji Photo Film Co Ltd 磁気記録媒体
WO2007114395A1 (ja) * 2006-03-31 2007-10-11 Fujifilm Corporation 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
JP6318110B2 (ja) * 2015-03-25 2018-04-25 富士フイルム株式会社 磁気記録媒体用組成物、磁気記録媒体の製造方法および磁気記録媒体

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740747A (en) 1980-08-25 1982-03-06 Sony Corp Magnetic recording medium
JPS58146024A (ja) 1982-02-05 1983-08-31 Toyo Ink Mfg Co Ltd 磁気記録媒体
JPS60133531A (ja) 1983-12-22 1985-07-16 Fuji Photo Film Co Ltd 磁気記録媒体
JPS60133530A (ja) 1983-12-22 1985-07-16 Fuji Photo Film Co Ltd 磁気記録媒体
JPH02239423A (ja) * 1989-03-10 1990-09-21 Hitachi Maxell Ltd 磁気記録媒体
JPH08263826A (ja) * 1995-03-23 1996-10-11 Tdk Corp 磁気記録媒体
US5906885A (en) * 1995-03-28 1999-05-25 Tdk Corporation Magnetic recording medium
US6033760A (en) * 1998-02-13 2000-03-07 Kao Corporation Magnetic recording medium
GB2352654B (en) * 1999-06-24 2003-09-24 Fuji Photo Film Co Ltd Magnetic recording medium
JP2001084582A (ja) 1999-09-13 2001-03-30 Tdk Corp 磁気記録媒体
US6783889B2 (en) * 2000-12-13 2004-08-31 Toray Industries, Inc. Polyester film and magnetic recording medium using the same
JP2003059028A (ja) * 2001-08-20 2003-02-28 Fuji Photo Film Co Ltd 磁気記録媒体
JP2003346324A (ja) * 2002-05-29 2003-12-05 Fuji Photo Film Co Ltd 磁気記録媒体

Also Published As

Publication number Publication date
JP2005310311A (ja) 2005-11-04
US20050238925A1 (en) 2005-10-27
US7754355B2 (en) 2010-07-13

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