JPS56124129A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS56124129A
JPS56124129A JP2760080A JP2760080A JPS56124129A JP S56124129 A JPS56124129 A JP S56124129A JP 2760080 A JP2760080 A JP 2760080A JP 2760080 A JP2760080 A JP 2760080A JP S56124129 A JPS56124129 A JP S56124129A
Authority
JP
Japan
Prior art keywords
magnetic layer
recording medium
magnetic recording
protective film
000mol
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
JP2760080A
Other languages
Japanese (ja)
Inventor
Yoshimi Endo
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 JP2760080A priority Critical patent/JPS56124129A/en
Publication of JPS56124129A publication Critical patent/JPS56124129A/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
    • G11B5/726—Two or more protective coatings

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To give a superior durability without damaging the electromagnetic conversion characteristic of the magnetic layer, by providing the protective film of a specific composition on the magnetic layer. CONSTITUTION:On the surface of magnetic layer 2 provided on substance 1, protective film 3 is provided where the high-molecular polyester resin of approximately 20,000-30,000mol.wt. and the cellulosic resin such as a nitrocellulose (80- 50wt% is desirable in the total amount of both resins) are essential components and the silicone lubricant is contained and they are crosslinked by an isocyanate compound as required.
JP2760080A 1980-03-04 1980-03-04 Magnetic recording medium Pending JPS56124129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2760080A JPS56124129A (en) 1980-03-04 1980-03-04 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2760080A JPS56124129A (en) 1980-03-04 1980-03-04 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS56124129A true JPS56124129A (en) 1981-09-29

Family

ID=12225411

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2760080A Pending JPS56124129A (en) 1980-03-04 1980-03-04 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS56124129A (en)

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