DE3175106D1 - Magnetic recording media and process for fabricating the same - Google Patents

Magnetic recording media and process for fabricating the same

Info

Publication number
DE3175106D1
DE3175106D1 DE8181106264T DE3175106T DE3175106D1 DE 3175106 D1 DE3175106 D1 DE 3175106D1 DE 8181106264 T DE8181106264 T DE 8181106264T DE 3175106 T DE3175106 T DE 3175106T DE 3175106 D1 DE3175106 D1 DE 3175106D1
Authority
DE
Germany
Prior art keywords
fabricating
same
magnetic recording
recording media
media
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
DE8181106264T
Other languages
English (en)
Inventor
Takashi Suzuki
Koichi Shinohara
Masaru Odagiri
Takashi Fujita
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 JP11389880A external-priority patent/JPS5737719A/ja
Priority claimed from JP11390480A external-priority patent/JPS5737720A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE3175106D1 publication Critical patent/DE3175106D1/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
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • 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.]
    • 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.]
    • Y10T428/24372—Particulate matter
    • Y10T428/24405—Polymer or resin [e.g., natural or synthetic rubber, 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
    • Y10T428/24—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.]
    • Y10T428/24446—Wrinkled, creased, crinkled or creped
    • 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
DE8181106264T 1980-08-18 1981-08-11 Magnetic recording media and process for fabricating the same Expired DE3175106D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11389880A JPS5737719A (en) 1980-08-18 1980-08-18 Magnetic recording medium
JP11390480A JPS5737720A (en) 1980-08-18 1980-08-18 Magnetic recording medium and its manufacture

Publications (1)

Publication Number Publication Date
DE3175106D1 true DE3175106D1 (en) 1986-09-18

Family

ID=26452783

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181106264T Expired DE3175106D1 (en) 1980-08-18 1981-08-11 Magnetic recording media and process for fabricating the same

Country Status (3)

Country Link
US (1) US4564549A (de)
EP (1) EP0046269B1 (de)
DE (1) DE3175106D1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3277996D1 (en) * 1981-10-15 1988-02-18 Matsushita Electric Ind Co Ltd Magnetic recording medium
EP0088634B1 (de) * 1982-03-10 1986-12-30 Toray Industries, Inc. Schichtstoffilm und damit hergestelltes magnetisches Aufzeichnungsmedium
US4568599A (en) * 1982-03-10 1986-02-04 Toray Industries, Inc. Laminated film and magnetic recording medium made therewith
JPS5919229A (ja) * 1982-07-22 1984-01-31 Matsushita Electric Ind Co Ltd 磁気記録媒体
US4548855A (en) * 1982-11-02 1985-10-22 Toray Industries, Inc. Polyester film for magnetic recording medium
DE3370710D1 (en) * 1982-11-19 1987-05-07 Matsushita Electric Ind Co Ltd Magnetic recording medium
JP2777003B2 (ja) * 1991-06-28 1998-07-16 帝人株式会社 磁気記録媒体用ポリエステルフイルム及びその製造方法
US5210673A (en) * 1991-09-09 1993-05-11 Hitachi Metals, Ltd. Thin-film hard disk magnetic medium
JP2003191384A (ja) * 2001-12-26 2003-07-08 Mitsubishi Polyester Film Copp 離型フィルム用ポリエステルフィルム
US20080311429A1 (en) * 2007-06-15 2008-12-18 Tadao Katsuragawa Magnetic film, magnetic recording/ reproducing device, and polarization conversion component

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1401305A (en) * 1972-09-01 1975-07-16 Ici Ltd Magnetic recording materials
JPS5729769B2 (de) * 1974-02-15 1982-06-24
JPS585452B2 (ja) * 1975-08-28 1983-01-31 富士写真フイルム株式会社 磁気記録媒体
JPS5843817B2 (ja) * 1976-02-24 1983-09-29 富士写真フイルム株式会社 磁気記録体
GB1599161A (en) * 1976-07-15 1981-09-30 Matsushita Electric Ind Co Ltd Magnetic recording medium and method of making the same
JPS6037972B2 (ja) * 1976-09-29 1985-08-29 富士写真フイルム株式会社 磁気記録体
JPS6035267B2 (ja) * 1978-01-09 1985-08-13 東レ株式会社 表面の改質されたポリエステルフイルム
JPS6033289B2 (ja) * 1979-07-18 1985-08-02 松下電器産業株式会社 金属薄膜型磁気記録媒体
US4489117A (en) * 1981-09-01 1984-12-18 Toray Industries, Inc. Super high density magnetic recording medium
JPS5919229A (ja) * 1982-07-22 1984-01-31 Matsushita Electric Ind Co Ltd 磁気記録媒体

Also Published As

Publication number Publication date
EP0046269A1 (de) 1982-02-24
EP0046269B1 (de) 1986-08-13
US4564549A (en) 1986-01-14

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)