JPS57210449A - Magnetic recording medium and its manufacture - Google Patents

Magnetic recording medium and its manufacture

Info

Publication number
JPS57210449A
JPS57210449A JP56096427A JP9642781A JPS57210449A JP S57210449 A JPS57210449 A JP S57210449A JP 56096427 A JP56096427 A JP 56096427A JP 9642781 A JP9642781 A JP 9642781A JP S57210449 A JPS57210449 A JP S57210449A
Authority
JP
Japan
Prior art keywords
oligomer
magnetic layer
acrylic
setting
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.)
Pending
Application number
JP56096427A
Other languages
Japanese (ja)
Inventor
Atsutaka Yamaguchi
Tsunemi Oiwa
Masaaki Yasui
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.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell 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 Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP56096427A priority Critical patent/JPS57210449A/en
Publication of JPS57210449A publication Critical patent/JPS57210449A/en
Pending 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
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction
    • G11B5/722—Protective coatings, e.g. anti-static or antifriction containing an anticorrosive material

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To improve wear resistance and corrosion resistance, by providing a protective film, formed by the polymerization and setting of a spiran ring containing acrylic oligomer, over the surface of a magnetic layer. CONSTITUTION:The surface of a magnetic layer provided on a base such as a polyester film is coated with an oligomer, which has a spiran ring in a molecule and acrylic double bonds at both molecular terminals as shown by the general formula (where A is ethylene group and Y is a -ORO- group; and R is an alkylene group and (n) is an integer), or a mixuter of said oligomer and ester obtained by the reaction of polyhydric alcohol with acrylic unsaturated acid, and the surface is irradiated with radiation to cause polymerization and setting.
JP56096427A 1981-06-22 1981-06-22 Magnetic recording medium and its manufacture Pending JPS57210449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56096427A JPS57210449A (en) 1981-06-22 1981-06-22 Magnetic recording medium and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56096427A JPS57210449A (en) 1981-06-22 1981-06-22 Magnetic recording medium and its manufacture

Publications (1)

Publication Number Publication Date
JPS57210449A true JPS57210449A (en) 1982-12-24

Family

ID=14164686

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56096427A Pending JPS57210449A (en) 1981-06-22 1981-06-22 Magnetic recording medium and its manufacture

Country Status (1)

Country Link
JP (1) JPS57210449A (en)

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