DE3461503D1 - Polyester film and magnetic recording medium made therefrom - Google Patents

Polyester film and magnetic recording medium made therefrom

Info

Publication number
DE3461503D1
DE3461503D1 DE8484304358T DE3461503T DE3461503D1 DE 3461503 D1 DE3461503 D1 DE 3461503D1 DE 8484304358 T DE8484304358 T DE 8484304358T DE 3461503 T DE3461503 T DE 3461503T DE 3461503 D1 DE3461503 D1 DE 3461503D1
Authority
DE
Germany
Prior art keywords
recording medium
magnetic recording
polyester film
made therefrom
medium made
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
Application number
DE8484304358T
Other languages
English (en)
Inventor
Ken-Ichi Kawakami
Toshiya Yoshii
Masaru Suzuki
Hotsuma Okasaka
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27315665&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3461503(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP12800483A external-priority patent/JPS6021250A/ja
Priority claimed from JP58181246A external-priority patent/JPS6071659A/ja
Priority claimed from JP19096983A external-priority patent/JPS6082326A/ja
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Application granted granted Critical
Publication of DE3461503D1 publication Critical patent/DE3461503D1/de
Expired 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
    • G11B5/73—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
    • G11B5/73935—Polyester substrates, e.g. polyethylene terephthalate characterised by roughness or surface features, e.g. by added 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
    • G11B5/73931—Two or more layers, at least one layer being polyester
    • 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.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y10T428/24967—Absolute thicknesses specified
    • 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.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y10T428/24967—Absolute thicknesses specified
    • Y10T428/24975—No layer or component greater than 5 mils thick
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/254—Polymeric or resinous material
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y10T428/257—Iron oxide or aluminum oxide
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/3154—Of fluorinated addition polymer from unsaturated monomers
    • Y10T428/31544—Addition polymer is perhalogenated
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
DE8484304358T 1983-07-15 1984-06-27 Polyester film and magnetic recording medium made therefrom Expired DE3461503D1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP12800483A JPS6021250A (ja) 1983-07-15 1983-07-15 複合ポリエステルフイルム
JP58181246A JPS6071659A (ja) 1983-09-29 1983-09-29 フィルム用ポリエステル組成物
JP19096983A JPS6082326A (ja) 1983-10-14 1983-10-14 二軸配向ポリエステルフィルム

Publications (1)

Publication Number Publication Date
DE3461503D1 true DE3461503D1 (en) 1987-01-15

Family

ID=27315665

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484304358T Expired DE3461503D1 (en) 1983-07-15 1984-06-27 Polyester film and magnetic recording medium made therefrom

Country Status (3)

Country Link
US (1) US4590119A (de)
EP (1) EP0132951B2 (de)
DE (1) DE3461503D1 (de)

Families Citing this family (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4734451A (en) * 1983-09-01 1988-03-29 Battelle Memorial Institute Supercritical fluid molecular spray thin films and fine powders
JPS6120741A (ja) * 1984-07-09 1986-01-29 東レ株式会社 易接着性ポリエステルフイルム
US4803577A (en) * 1985-06-12 1989-02-07 Tdk Corporation Vertical magnetic recording system using rigid disk
JPS61293832A (ja) * 1985-06-21 1986-12-24 Diafoil Co Ltd 透明易滑二軸延伸ポリエステルフイルム
US4732814A (en) * 1985-10-03 1988-03-22 Toray Industries, Inc. Polyester film with smooth and highly adhesive surface and method of making same
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
US4761327A (en) * 1986-01-17 1988-08-02 Teijin Limited Biaxially oriented aromatic polyester film
JPS62245520A (ja) * 1986-04-16 1987-10-26 Diafoil Co Ltd 磁気記録媒体
WO1988007928A1 (en) * 1987-04-07 1988-10-20 Toray Industries, Inc. Polyester film
US4921764A (en) * 1987-12-28 1990-05-01 Hoechst Celanese Corporation Polyester film coated with metal adhesion promoting coating and having superior winding performance
US4845189A (en) * 1987-12-28 1989-07-04 Hoechst Celanese Corporation Polyester film coated with metal adhesion promoting coating and having superior winding performance
JP2728268B2 (ja) * 1988-09-08 1998-03-18 ティーディーケイ株式会社 テープ状磁気記録媒体
TW226977B (de) * 1990-09-06 1994-07-21 Teijin Ltd
CA2073049A1 (en) * 1990-09-21 1992-03-22 Masahiro Kimura Thermoplastic polyester compositions and films formed using same
JP2963949B2 (ja) * 1990-10-08 1999-10-18 東洋紡績株式会社 配向ポリエステルフィルム
JPH04274015A (ja) * 1991-02-27 1992-09-30 Hitachi Maxell Ltd オーデイオカセットテープとその製造方法
JPH0816170B2 (ja) * 1991-04-26 1996-02-21 ダイアホイルヘキスト株式会社 二軸延伸ポリエステルフィルム
EP0519633A1 (de) * 1991-06-11 1992-12-23 Imperial Chemical Industries Plc Datenspeichermedien
CA2083976A1 (en) * 1991-12-04 1993-06-05 Shinichi Kinoshita Optical tape
EP0671993A1 (de) * 1992-12-09 1995-09-20 Hoechst Aktiengesellschaft Biaxial orientierte copolyesterfolie für magnetische aufzeichnungsplatten und daraus hergestellte aufzeichnungsplatten
JPH06195672A (ja) * 1992-12-25 1994-07-15 Matsushita Electric Ind Co Ltd 磁気記録媒体及びその製造方法
JPH06333227A (ja) * 1993-05-24 1994-12-02 Fuji Photo Film Co Ltd 磁気記録媒体
WO1995016735A1 (en) * 1993-12-17 1995-06-22 E.I. Du Pont De Nemours And Company Polyethylene therephthalate articles having desirable adhesion and non-blocking characteristics, and a preparative process therefor
US5828488A (en) * 1993-12-21 1998-10-27 Minnesota Mining And Manufacturing Co. Reflective polarizer display
US5882774A (en) * 1993-12-21 1999-03-16 Minnesota Mining And Manufacturing Company Optical film
US6804058B1 (en) 1993-12-21 2004-10-12 3M Innovative Properties Company Electroluminescent light source and display incorporating same
US20070091230A1 (en) * 1993-12-21 2007-04-26 3M Innovative Properties Company Display incorporating reflective polarizer
US6025897A (en) 1993-12-21 2000-02-15 3M Innovative Properties Co. Display with reflective polarizer and randomizing cavity
DE69435173D1 (de) * 1993-12-21 2009-01-15 Minnesota Mining & Mfg Mehrschichtiger optischer Film
US6096375A (en) * 1993-12-21 2000-08-01 3M Innovative Properties Company Optical polarizer
US5656356A (en) * 1994-01-11 1997-08-12 Teijin Limited Biaxially oriented laminated polyester film
US6101032A (en) 1994-04-06 2000-08-08 3M Innovative Properties Company Light fixture having a multilayer polymeric film
JP3789144B2 (ja) * 1994-06-14 2006-06-21 三菱化学ポリエステルフィルム株式会社 フォトレジスト用積層ポリエステルフィルム
DE19606956A1 (de) * 1996-02-26 1997-08-28 Hoechst Diafoil Gmbh Rauhe biaxial orientierte Polyesterfolie für die Kondensatoranwendung
US6144525A (en) 1996-07-16 2000-11-07 Chang; Hao-Jan High density recording medium having a non-magnetic, metallic layer on a flexible substrate
JPH1134266A (ja) * 1997-07-17 1999-02-09 Teijin Ltd 易接着性ポリエステルフィルム及び積層フィルム
EP0947543B1 (de) * 1998-03-30 2005-06-08 Sumitomo Bakelite Company Limited Folie aus Polyesterabmischung
WO1999052969A1 (fr) * 1998-04-13 1999-10-21 Teijin Limited Film de polyester biaxialement oriente, destine a etre lamine sur une plaque metallique
JP4765237B2 (ja) * 1999-09-14 2011-09-07 東レ株式会社 ポリエステル組成物、それからなるフィルムおよび磁気記録媒体
WO2001040357A1 (fr) * 1999-12-03 2001-06-07 Toray Industries, Inc. Film polyester etire bi-axialement pour formage
JP2016016543A (ja) * 2014-07-05 2016-02-01 三菱樹脂株式会社 二軸配向積層ポリエステルフィルム
US10861487B2 (en) * 2017-06-05 2020-12-08 Maxell Holdings, Ltd. High recording density magnetic recording medium and recording/reproduction mechanism for the same
JP6691512B2 (ja) 2017-06-23 2020-04-28 富士フイルム株式会社 磁気記録媒体
JP6884220B2 (ja) * 2017-09-29 2021-06-09 富士フイルム株式会社 磁気テープおよび磁気記録再生装置
CN113436654B (zh) * 2017-09-29 2022-12-02 富士胶片株式会社 磁带及磁记录回放装置
US11361793B2 (en) * 2018-03-23 2022-06-14 Fujifilm Corporation Magnetic tape having characterized magnetic layer and magnetic recording and reproducing device
US11514944B2 (en) 2018-03-23 2022-11-29 Fujifilm Corporation Magnetic tape and magnetic tape device
US11361792B2 (en) * 2018-03-23 2022-06-14 Fujifilm Corporation Magnetic tape having characterized magnetic layer and magnetic recording and reproducing device
US11514943B2 (en) 2018-03-23 2022-11-29 Fujifilm Corporation Magnetic tape and magnetic tape device
JP6830931B2 (ja) 2018-07-27 2021-02-17 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置
JP6830930B2 (ja) * 2018-07-27 2021-02-17 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置
JP6784738B2 (ja) 2018-10-22 2020-11-11 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置
JP7042737B2 (ja) 2018-12-28 2022-03-28 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置
JP6830945B2 (ja) 2018-12-28 2021-02-17 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置
JP7003073B2 (ja) 2019-01-31 2022-01-20 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置
JP6778804B1 (ja) 2019-09-17 2020-11-04 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

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US3136655A (en) * 1960-04-22 1964-06-09 Du Pont Method of coating polyethylene terephthalate film, coated article and composition therefor
US3515626A (en) * 1965-02-22 1970-06-02 Ici Ltd Thermoplastic laminates having improved surface properties
US3629202A (en) * 1969-09-12 1971-12-21 Eastman Kodak Co Treating polyesters with organic acids for improved stability
DE2019429A1 (de) * 1970-04-22 1971-11-11 Bayer Ag Verfahren zur Herstellung von Terephthalsaeurepolyestern mit verbesserten Eigenschaften
US4198458A (en) * 1973-05-11 1980-04-15 Teijin Limited Laminate polyester films
JPS5212803A (en) * 1975-07-21 1977-01-31 Mitsubishi Chem Ind Ltd Polyethylene terephthalate film for magnetic tape
JPS6037969B2 (ja) * 1976-09-06 1985-08-29 富士写真フイルム株式会社 磁気テ−プ用リ−ダ−またはトレ−ラ−テ−プ
JPS5341355A (en) * 1976-09-29 1978-04-14 Toray Ind Inc Biaxilialy streched polyester film
US4435546A (en) * 1976-11-23 1984-03-06 Bayer Aktiengesellschaft Polyesters compositions which crystallize rapidly
DE2924157B2 (de) * 1978-06-16 1980-10-30 Tdk Electronics Co. Ltd., Tokio Magnetaufzeichnungsband
JPS576767A (en) * 1980-06-16 1982-01-13 Teijin Ltd Easily adhesive polyester film
JPS5925824A (ja) * 1982-08-04 1984-02-09 Olympus Optical Co Ltd ポリエステルフイルムの表面処理方法

Also Published As

Publication number Publication date
EP0132951B2 (de) 1994-05-25
EP0132951B1 (de) 1986-11-26
US4590119A (en) 1986-05-20
EP0132951A1 (de) 1985-02-13

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings
8339 Ceased/non-payment of the annual fee