DE69707981T2 - Plattenförmiges magnetisches Aufzeichnungsmedium - Google Patents

Plattenförmiges magnetisches Aufzeichnungsmedium

Info

Publication number
DE69707981T2
DE69707981T2 DE69707981T DE69707981T DE69707981T2 DE 69707981 T2 DE69707981 T2 DE 69707981T2 DE 69707981 T DE69707981 T DE 69707981T DE 69707981 T DE69707981 T DE 69707981T DE 69707981 T2 DE69707981 T2 DE 69707981T2
Authority
DE
Germany
Prior art keywords
disc
recording medium
magnetic recording
shaped magnetic
shaped
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 - Lifetime
Application number
DE69707981T
Other languages
English (en)
Other versions
DE69707981D1 (de
Inventor
Shinji Saito
Hitoshi Noguchi
Yasushi Endo
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
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
Priority claimed from JP8171328A external-priority patent/JPH1021529A/ja
Priority claimed from JP8172515A external-priority patent/JPH1021530A/ja
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Publication of DE69707981D1 publication Critical patent/DE69707981D1/de
Application granted granted Critical
Publication of DE69707981T2 publication Critical patent/DE69707981T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • G11B5/73929—Polyester substrates, e.g. polyethylene terephthalate comprising naphthalene ring compounds, e.g. polyethylene naphthalate substrates
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73937—Substrates having an organic polymer comprising a ring structure
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
DE69707981T 1996-07-01 1997-07-01 Plattenförmiges magnetisches Aufzeichnungsmedium Expired - Lifetime DE69707981T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8171328A JPH1021529A (ja) 1996-07-01 1996-07-01 ディスク状磁気記録媒体
JP8172515A JPH1021530A (ja) 1996-07-02 1996-07-02 ディスク状磁気記録媒体

Publications (2)

Publication Number Publication Date
DE69707981D1 DE69707981D1 (de) 2001-12-13
DE69707981T2 true DE69707981T2 (de) 2002-04-04

Family

ID=26494093

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69707981T Expired - Lifetime DE69707981T2 (de) 1996-07-01 1997-07-01 Plattenförmiges magnetisches Aufzeichnungsmedium

Country Status (3)

Country Link
US (1) US5935674A (de)
EP (1) EP0817176B1 (de)
DE (1) DE69707981T2 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999053483A1 (fr) * 1998-04-13 1999-10-21 Teijin Limited Couche de polyamide aromatique pour support d'enregistrement magnetique haute densite
US6444290B1 (en) * 1998-06-11 2002-09-03 Fuji Photo Film Co., Ltd. Magnetic recording medium comprising a support containing a specific size filler and having a specific concentration of surface protrusions
US6335080B1 (en) 1999-01-04 2002-01-01 Seagate Technology Llc Magnetic disk media and disk drives utilizing polymeric disk substrates
AU2327300A (en) * 1999-02-10 2000-08-29 Hitachi Maxell, Ltd. Magnetic recording medium, and magnetic powder and method for preparing the same
US6663939B1 (en) 1999-11-02 2003-12-16 Tdk Corporation Magnetic recording medium
JP3813929B2 (ja) * 2000-12-11 2006-08-23 帝人株式会社 二軸配向ポリエステルフィルムの製造法
JP4666246B2 (ja) * 2001-09-13 2011-04-06 富士電機デバイステクノロジー株式会社 磁気記録媒体、その製造方法および磁気記録装置
US6980380B2 (en) * 2001-12-28 2005-12-27 Matsushita Electric Industrial Co., Ltd. Master information carrier and method for manufacturing magnetic disk
JP3886968B2 (ja) * 2002-03-18 2007-02-28 日立マクセル株式会社 磁気記録媒体および磁気記録カートリッジ
US6964811B2 (en) * 2002-09-20 2005-11-15 Hitachi Maxell, Ltd. Magnetic powder, method for producing the same and magnetic recording medium comprising the same
KR20050065448A (ko) * 2002-10-24 2005-06-29 데이진 듀폰 필름 가부시키가이샤 이축배향 폴리에스테르 필름 및 플렉시블 디스크
JP2004164799A (ja) * 2002-11-15 2004-06-10 Fuji Photo Film Co Ltd 磁気ディスク媒体
JP2004164800A (ja) * 2002-11-15 2004-06-10 Fuji Photo Film Co Ltd 磁気ディスク媒体及びその記録再生方法
GB2414852B (en) * 2003-02-19 2007-05-02 Hitachi Maxell Magnetic recording medium
JP4053450B2 (ja) * 2003-03-27 2008-02-27 富士フイルム株式会社 磁気転写方法
JP2005038499A (ja) * 2003-07-14 2005-02-10 Fuji Photo Film Co Ltd 磁気ディスク
JP4644535B2 (ja) * 2004-06-21 2011-03-02 富士フイルム株式会社 六方晶フェライト磁性粉末の製造方法および磁気記録媒体の製造方法
JP2006202401A (ja) * 2005-01-20 2006-08-03 Fuji Photo Film Co Ltd 磁気転写用マスターディスク、磁気記録媒体、及び磁気記録装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181445B (en) * 1985-10-09 1989-11-08 Tdk Corp Magnetic recording medium
JPH0625267B2 (ja) * 1985-12-17 1994-04-06 ダイアホイルヘキスト株式会社 高密度磁気記録媒体用ポリエチレン−２，６−ナフタレ−トフイルム
US5106681A (en) * 1987-02-12 1992-04-21 Diafoil Company, Limited Polyester films, magnetic recording media and film capacitors produced therefrom
JP2655379B2 (ja) * 1992-04-02 1997-09-17 富士写真フイルム株式会社 磁気記録ディスク
US5377060A (en) * 1992-09-02 1994-12-27 Antek Peripherals, Inc. Ultra slim data storage module utilizing plural flexible disks

Also Published As

Publication number Publication date
DE69707981D1 (de) 2001-12-13
US5935674A (en) 1999-08-10
EP0817176A1 (de) 1998-01-07
EP0817176B1 (de) 2001-11-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: FUJIFILM CORP., TOKIO/TOKYO, JP