JPS57152542A - Manufacture of magnetic recording medium - Google Patents

Manufacture of magnetic recording medium

Info

Publication number
JPS57152542A
JPS57152542A JP56036742A JP3674281A JPS57152542A JP S57152542 A JPS57152542 A JP S57152542A JP 56036742 A JP56036742 A JP 56036742A JP 3674281 A JP3674281 A JP 3674281A JP S57152542 A JPS57152542 A JP S57152542A
Authority
JP
Japan
Prior art keywords
thin film
recording medium
magnetic recording
current
magnetic thin
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
JP56036742A
Other languages
Japanese (ja)
Inventor
Ryuji Sugita
Toshiaki Kunieda
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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56036742A priority Critical patent/JPS57152542A/en
Publication of JPS57152542A publication Critical patent/JPS57152542A/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 the corrosion resistance of a metallic magnetic thin film by applying a current and heating the thin film and oxidizing it. CONSTITUTION:A magnetic recording medium 20 which has a magnetic thin film of cobalt-nickel alloy on a base is transported from a supply roll 18 to a take-up roll 19 through metalic rollers 15 and 16 and a voltage is applied between the metallic rollers 15 and 16 from a power source 17 to flow a current through the magnetic thin film on the magnetic recording medium 20. Thus, passive layers made of oxide are formed on the surfaces 23 of columnar particles 22 constituting the magnetic thin film by Joule heat by said current, improving the corrosion resistance.
JP56036742A 1981-03-13 1981-03-13 Manufacture of magnetic recording medium Pending JPS57152542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56036742A JPS57152542A (en) 1981-03-13 1981-03-13 Manufacture of magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56036742A JPS57152542A (en) 1981-03-13 1981-03-13 Manufacture of magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57152542A true JPS57152542A (en) 1982-09-20

Family

ID=12478174

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56036742A Pending JPS57152542A (en) 1981-03-13 1981-03-13 Manufacture of magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57152542A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57179949A (en) * 1981-04-29 1982-11-05 Hitachi Maxell Ltd Magnetic recording medium and its manufacture
JPS62293507A (en) * 1986-06-12 1987-12-21 Hitachi Maxell Ltd Magnetic recording medium and its production

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57179949A (en) * 1981-04-29 1982-11-05 Hitachi Maxell Ltd Magnetic recording medium and its manufacture
JPS62293507A (en) * 1986-06-12 1987-12-21 Hitachi Maxell Ltd Magnetic recording medium and its production

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