JPS57210444A - Magnetic recording medium and its manufacture - Google Patents

Magnetic recording medium and its manufacture

Info

Publication number
JPS57210444A
JPS57210444A JP56096422A JP9642281A JPS57210444A JP S57210444 A JPS57210444 A JP S57210444A JP 56096422 A JP56096422 A JP 56096422A JP 9642281 A JP9642281 A JP 9642281A JP S57210444 A JPS57210444 A JP S57210444A
Authority
JP
Japan
Prior art keywords
acrylic
urethane
magnetic layer
molecular
manufacture
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
JP56096422A
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 JP56096422A priority Critical patent/JPS57210444A/en
Publication of JPS57210444A publication Critical patent/JPS57210444A/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 allowing an urethane acrylic oligomer and acrylic polyhydric ester to polymerize and cure, over the surface of a magnetic layer. CONSTITUTION:The surface of a magnetic layer provided over a base such as a polyester film is painted with a mixture of an urethane acrylic oligomer which has an urethane bond at a molecular principal chain and acrylic double bonds at both molecular terminals and 500-20,000 molecular weight, and is liquid at normal temperature, and polyhydric ester obtained by the reaction of polyhydric alcohol with acrylic unsaturated acids, and polymerization and curing are caused by irradiating the surface with radiation.
JP56096422A 1981-06-22 1981-06-22 Magnetic recording medium and its manufacture Pending JPS57210444A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56096422A JPS57210444A (en) 1981-06-22 1981-06-22 Magnetic recording medium and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56096422A JPS57210444A (en) 1981-06-22 1981-06-22 Magnetic recording medium and its manufacture

Publications (1)

Publication Number Publication Date
JPS57210444A true JPS57210444A (en) 1982-12-24

Family

ID=14164540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56096422A Pending JPS57210444A (en) 1981-06-22 1981-06-22 Magnetic recording medium and its manufacture

Country Status (1)

Country Link
JP (1) JPS57210444A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6148124A (en) * 1984-08-14 1986-03-08 Fuji Photo Film Co Ltd Magnetic recording medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6148124A (en) * 1984-08-14 1986-03-08 Fuji Photo Film Co Ltd Magnetic recording medium
JPH0566652B2 (en) * 1984-08-14 1993-09-22 Fuji Photo Film Co Ltd

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