DE68924454D1 - Aromatischer Imid-Polymer-Film für magnetisches Aufzeichnungsmaterial und Verfahren zu seiner Herstellung. - Google Patents

Aromatischer Imid-Polymer-Film für magnetisches Aufzeichnungsmaterial und Verfahren zu seiner Herstellung.

Info

Publication number
DE68924454D1
DE68924454D1 DE68924454T DE68924454T DE68924454D1 DE 68924454 D1 DE68924454 D1 DE 68924454D1 DE 68924454 T DE68924454 T DE 68924454T DE 68924454 T DE68924454 T DE 68924454T DE 68924454 D1 DE68924454 D1 DE 68924454D1
Authority
DE
Germany
Prior art keywords
production
magnetic recording
recording material
polymer film
imide polymer
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
DE68924454T
Other languages
English (en)
Inventor
Kenji C O Ube Chemic Matsubara
Akinori C O Ube Chemica Ohtani
Toshiyuki C O Ube Chem Nishino
Kazuhiko C O Ube Chem Yoshioka
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.)
Ube Corp
Original Assignee
Ube Industries 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 Ube Industries Ltd filed Critical Ube Industries Ltd
Application granted granted Critical
Publication of DE68924454D1 publication Critical patent/DE68924454D1/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
    • G11B5/73—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.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/258—Alkali metal or alkaline earth metal 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
    • Y10T428/259—Silicic 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • 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]
    • Y10T428/31721—Of polyimide
DE68924454T 1988-07-29 1989-07-28 Aromatischer Imid-Polymer-Film für magnetisches Aufzeichnungsmaterial und Verfahren zu seiner Herstellung. Expired - Lifetime DE68924454D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63188124A JPH0762082B2 (ja) 1988-07-29 1988-07-29 記録媒体用ポリイミドフィルム及びその製法

Publications (1)

Publication Number Publication Date
DE68924454D1 true DE68924454D1 (de) 1995-11-09

Family

ID=16218135

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68924454T Expired - Lifetime DE68924454D1 (de) 1988-07-29 1989-07-28 Aromatischer Imid-Polymer-Film für magnetisches Aufzeichnungsmaterial und Verfahren zu seiner Herstellung.

Country Status (4)

Country Link
US (1) US5200255A (de)
EP (1) EP0353094B1 (de)
JP (1) JPH0762082B2 (de)
DE (1) DE68924454D1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0459452A3 (en) * 1990-05-30 1992-04-08 Ube Industries, Ltd. Aromatic polyimide film laminated with metal foil
JPH0520664A (ja) * 1991-07-10 1993-01-29 Diafoil Co Ltd 高密度磁気記録媒体
US5747152A (en) * 1993-12-02 1998-05-05 Dai Nippon Printing Co., Ltd. Transparent functional membrane containing functional ultrafine particles, transparent functional film, and process for producing the same
EP0659553A1 (de) * 1993-12-22 1995-06-28 E.I. Du Pont De Nemours And Company Koextrudierter Mehrschichtfilm aus aromatischen Polyimiden und seine Herstellung
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
US6908685B2 (en) * 2000-08-24 2005-06-21 E. I. Du Pont De Nemours And Company Polyimide film, method of manufacture, and metal interconnect board with polyimide film substrate
US6956098B2 (en) 2002-09-20 2005-10-18 E. I. Du Pont De Nemours And Company High modulus polyimide compositions useful as dielectric substrates for electronics applications, and methods relating thereto
JP4635603B2 (ja) * 2004-12-27 2011-02-23 東レ・デュポン株式会社 ポリイミドフィルム
TWI491649B (zh) * 2007-04-13 2015-07-11 Ube Industries Polyimide film with smoothness
JP5402254B2 (ja) * 2009-02-13 2014-01-29 東洋紡株式会社 多層ポリイミドフィルム
JP2010264655A (ja) * 2009-05-14 2010-11-25 Ube Ind Ltd 多層ポリイミドフィルム

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59203229A (ja) * 1983-04-30 1984-11-17 Victor Co Of Japan Ltd 磁気記録媒体
JPS6079525A (ja) * 1983-10-05 1985-05-07 Fuji Photo Film Co Ltd 磁気記録媒体
JPS60127523A (ja) * 1983-12-14 1985-07-08 Toray Ind Inc 高密度記録媒体用ベ−スフイルム
JPH0618068B2 (ja) * 1985-09-12 1994-03-09 キヤノン株式会社 磁気記録媒体およびベ−スフイルム
US4839217A (en) * 1986-05-16 1989-06-13 Ube Industries, Ltd. Aromatic polyimide film
DE3888860T2 (de) * 1987-02-02 1994-08-04 Canon Kk Magnetischer Aufzeichnungsträger.
JPH0766524B2 (ja) * 1987-02-02 1995-07-19 キヤノン株式会社 磁気記録媒体

Also Published As

Publication number Publication date
EP0353094A3 (de) 1991-01-02
US5200255A (en) 1993-04-06
EP0353094B1 (de) 1995-10-04
JPH0238429A (ja) 1990-02-07
EP0353094A2 (de) 1990-01-31
JPH0762082B2 (ja) 1995-07-05

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Legal Events

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