JP5133291B2 - 磁気記録媒体 - Google Patents

磁気記録媒体 Download PDF

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Publication number
JP5133291B2
JP5133291B2 JP2009087738A JP2009087738A JP5133291B2 JP 5133291 B2 JP5133291 B2 JP 5133291B2 JP 2009087738 A JP2009087738 A JP 2009087738A JP 2009087738 A JP2009087738 A JP 2009087738A JP 5133291 B2 JP5133291 B2 JP 5133291B2
Authority
JP
Japan
Prior art keywords
acid
organic acid
recording medium
magnetic recording
group
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
JP2009087738A
Other languages
English (en)
Japanese (ja)
Other versions
JP2010238330A5 (enExample
JP2010238330A (ja
Inventor
陽平 有年
和史 小村
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 JP2009087738A priority Critical patent/JP5133291B2/ja
Priority to US12/750,140 priority patent/US9047904B2/en
Priority to EP10158630A priority patent/EP2237274A1/en
Publication of JP2010238330A publication Critical patent/JP2010238330A/ja
Publication of JP2010238330A5 publication Critical patent/JP2010238330A5/ja
Application granted granted Critical
Publication of JP5133291B2 publication Critical patent/JP5133291B2/ja
Priority to US14/698,913 priority patent/US20150248908A1/en
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
    • G11B5/7013—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 dispersing agent
    • 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
    • G11B5/7021—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 containing a polyurethane or a polyisocyanate
    • 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
    • G11B5/7021—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 containing a polyurethane or a polyisocyanate
    • G11B5/7022—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 containing a polyurethane or a polyisocyanate containing mixtures of polyurethanes or polyisocyanates with other polymers
    • 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
    • G11B5/7023—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 containing polyesters, polyethers, silicones, polyvinyl resins, polyacrylresins or epoxy resins
    • 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
    • G11B5/73—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
    • G11B5/7334—Base layer characterised by composition or structure

Landscapes

  • Magnetic Record Carriers (AREA)
JP2009087738A 2009-03-31 2009-03-31 磁気記録媒体 Active JP5133291B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2009087738A JP5133291B2 (ja) 2009-03-31 2009-03-31 磁気記録媒体
US12/750,140 US9047904B2 (en) 2009-03-31 2010-03-30 Magnetic recording medium
EP10158630A EP2237274A1 (en) 2009-03-31 2010-03-31 Magnetic recording medium
US14/698,913 US20150248908A1 (en) 2009-03-31 2015-04-29 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009087738A JP5133291B2 (ja) 2009-03-31 2009-03-31 磁気記録媒体

Publications (3)

Publication Number Publication Date
JP2010238330A JP2010238330A (ja) 2010-10-21
JP2010238330A5 JP2010238330A5 (enExample) 2011-10-27
JP5133291B2 true JP5133291B2 (ja) 2013-01-30

Family

ID=42103856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009087738A Active JP5133291B2 (ja) 2009-03-31 2009-03-31 磁気記録媒体

Country Status (3)

Country Link
US (2) US9047904B2 (enExample)
EP (1) EP2237274A1 (enExample)
JP (1) JP5133291B2 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5781276B2 (ja) * 2010-05-12 2015-09-16 ジ・アリゾナ・ボード・オブ・リージェンツ・オン・ビハーフ・オブ・ザ・ユニバーシティ・オブ・アリゾナＴｈｅ Ａｒｉｚｏｎａ Ｂｏａｒｄ Ｏｆ Ｒｅｇｅｎｔｓ Ｏｎ Ｂｅｈａｌｆ Ｏｆ Ｔｈｅ Ｕｎｉｖｅｒｓｉｔｙ Ｏｆ Ａｒｉｚｏｎａ 金属磁性粉末の製造方法
JP6008895B2 (ja) * 2014-03-31 2016-10-19 富士フイルム株式会社 磁気記録媒体および磁気記録媒体用磁性塗料組成物
US11250880B2 (en) 2017-06-30 2022-02-15 Sony Corporation Magnetic recording medium having controlled protrusion characteristics

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4798755A (en) * 1985-05-01 1989-01-17 Fuji Photo Film Co., Ltd. Magnetic recording medium
US4707410A (en) * 1985-09-11 1987-11-17 Nippon Zeon Co., Ltd. Magnetic recording media
JPH0785305B2 (ja) 1986-08-05 1995-09-13 富士写真フイルム株式会社 磁気記録媒体
US5318838A (en) 1988-01-22 1994-06-07 Fuji Photo Film Co., Ltd. Magnetic recording medium comprising ferromagnetic particles, binder resins and phenyl phosphonic acid
JP2838162B2 (ja) 1988-01-22 1998-12-16 富士写真フイルム株式会社 磁気記録媒体
JP2653238B2 (ja) 1989-12-25 1997-09-17 東レ株式会社 磁気記録媒体
JPH04302818A (ja) 1991-03-29 1992-10-26 Sony Corp 磁気記録媒体
JP2745170B2 (ja) * 1991-09-17 1998-04-28 富士写真フイルム株式会社 磁気記録媒体
JP2715359B2 (ja) 1992-08-21 1998-02-18 富士写真フイルム株式会社 フレキシブル磁気記録ディスク及びその製造方法
WO1994011867A1 (fr) * 1992-11-06 1994-05-26 Mitsubishi Kasei Corporation Support d'enregistrement magnetique, procede d'enregistrement et de reproduction associe, et processeur d'informations fonctionnant avec ce support et selon ce procede
JPH06301965A (ja) 1992-11-13 1994-10-28 Sony Corp 磁気記録媒体
US6139946A (en) * 1997-05-30 2000-10-31 Imation Corp. Magnetic recording media incorporating a quaternary ammonium functional binder and magnetic pigment surface treated with compound having acidic and electron withdrawing functionalities
JP2001076333A (ja) 1999-09-07 2001-03-23 Fuji Photo Film Co Ltd 磁気記録媒体
JP3818495B2 (ja) * 2000-02-10 2006-09-06 Ｔｄｋ株式会社 磁気記録媒体
JP2002025034A (ja) * 2000-07-11 2002-01-25 Sony Corp 磁気記録媒体及びその製造方法
JP2002260211A (ja) 2001-02-28 2002-09-13 Fuji Photo Film Co Ltd 磁気記録媒体
JP2003085733A (ja) 2001-09-10 2003-03-20 Fuji Photo Film Co Ltd 磁気記録媒体
JP4194266B2 (ja) 2001-10-29 2008-12-10 富士フイルム株式会社 磁気記録媒体の製造方法および磁気記録媒体
US6818298B2 (en) * 2002-10-01 2004-11-16 Imation Corp. Magnetic recording medium with dual layer front coating and method of manufacture
JP2005004823A (ja) * 2003-06-10 2005-01-06 Sony Corp 磁気記録媒体
JP2005129141A (ja) * 2003-10-23 2005-05-19 Fuji Photo Film Co Ltd 磁気記録媒体及びその製造方法
JP2005353222A (ja) 2004-06-14 2005-12-22 Sony Corp 磁気記録媒体
JP2006031751A (ja) 2004-07-12 2006-02-02 Fuji Photo Film Co Ltd 磁気記録媒体
JP2007265511A (ja) 2006-03-28 2007-10-11 Fujifilm Corp 磁気テープ及び磁気テープカートリッジ

Also Published As

Publication number Publication date
EP2237274A1 (en) 2010-10-06
US9047904B2 (en) 2015-06-02
US20100247972A1 (en) 2010-09-30
JP2010238330A (ja) 2010-10-21
US20150248908A1 (en) 2015-09-03

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