JPS57179951A - Magnetic recording medium and its manufacture - Google Patents

Magnetic recording medium and its manufacture

Info

Publication number
JPS57179951A
JPS57179951A JP56065064A JP6506481A JPS57179951A JP S57179951 A JPS57179951 A JP S57179951A JP 56065064 A JP56065064 A JP 56065064A JP 6506481 A JP6506481 A JP 6506481A JP S57179951 A JPS57179951 A JP S57179951A
Authority
JP
Japan
Prior art keywords
source
nitrogen gas
recording medium
magnetic recording
layer
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
JP56065064A
Other languages
Japanese (ja)
Inventor
Tsunemi Oiwa
Kunio Wakao
Osamu Kitagami
Hideaki Niimi
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 JP56065064A priority Critical patent/JPS57179951A/en
Publication of JPS57179951A publication Critical patent/JPS57179951A/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

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To achieve a magnetic recording medium with excellent durability, by forming a layer made of oxide and nitride through the surface nitrided for a ferromagnetic metal thin film layer with oxidized surface. CONSTITUTION:A polyester base film formed with a ferromagnetic metal thin film layer with oxidized surface is set to a lower surface of a base 2 of a device where the base 2 and a cold cathode type ion source 3 are provided up and down in a vacuum tank 1. After vacuum with an exhaust system 4, nitrogen gas is introduced to the source 3 from an introduction tube 5 linked to the source 3 is introduced to the source 3, a voltage is applied to a tungusten anode 6 of the source 3, a reverse bias voltage is applied between the source 3 and an electrode 10 to ionize the nitrogen gas, and the polyester base film 7 formed with the ferromagnetic metallic thin layer with oxidized surface receives the nitrogen gas to nitride the surface.
JP56065064A 1981-04-29 1981-04-29 Magnetic recording medium and its manufacture Pending JPS57179951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56065064A JPS57179951A (en) 1981-04-29 1981-04-29 Magnetic recording medium and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56065064A JPS57179951A (en) 1981-04-29 1981-04-29 Magnetic recording medium and its manufacture

Publications (1)

Publication Number Publication Date
JPS57179951A true JPS57179951A (en) 1982-11-05

Family

ID=13276146

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56065064A Pending JPS57179951A (en) 1981-04-29 1981-04-29 Magnetic recording medium and its manufacture

Country Status (1)

Country Link
JP (1) JPS57179951A (en)

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