JPS57167131A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57167131A
JPS57167131A JP56050122A JP5012281A JPS57167131A JP S57167131 A JPS57167131 A JP S57167131A JP 56050122 A JP56050122 A JP 56050122A JP 5012281 A JP5012281 A JP 5012281A JP S57167131 A JPS57167131 A JP S57167131A
Authority
JP
Japan
Prior art keywords
film
lubricant
thin film
layer
thickness
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.)
Granted
Application number
JP56050122A
Other languages
Japanese (ja)
Other versions
JPH0421930B2 (en
Inventor
Takeo Hinobayashi
Akira Isori
Hiroyasu Oda
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56050122A priority Critical patent/JPS57167131A/en
Publication of JPS57167131A publication Critical patent/JPS57167131A/en
Publication of JPH0421930B2 publication Critical patent/JPH0421930B2/ja
Granted 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
    • G11B5/725—Protective coatings, e.g. anti-static or antifriction containing a lubricant, e.g. organic compounds

Abstract

PURPOSE:To obtain a magnetic recording medium which has no spacing loss and has a high wear resistance, by forming a lubricating inorganic compound thin film having a specific thickness on the surface of a disc where a magnetic film is formed and forming a lubricant film on the surface of this thin film. CONSTITUTION:A lubricating inorganic compound thin film having 30-200Angstrom thickness is formed on the surface of a disc where a magnetic film is formed, and a lubricant film is formed on the surface of this thin film. For example, an Armite layer is formed on the surface of an Al substrate, and an alpha-Fe2O3 layer with 0.2mum thickness is formed on the surface of the substrate by sputtering in atmospheric Ar-O2, and this layer is subjected to the heat treatment in a reducing atmosphere and is converted to Fe3O4 and is subjected to the heat treatment again in air to form a ferrite oxide magnetic film consisting of gamma-Fe2O3. Next, after an SiO2 film is formed by sputtering in atmospheric Ar-O2, a lubricant is applied by spin coating and is wiped from the surface by a rotary pad, to which a sheet of paper including no fats and ois is attached, to form a lubricant film.
JP56050122A 1981-04-03 1981-04-03 Magnetic recording medium Granted JPS57167131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56050122A JPS57167131A (en) 1981-04-03 1981-04-03 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56050122A JPS57167131A (en) 1981-04-03 1981-04-03 Magnetic recording medium

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP24926487A Division JPS63119019A (en) 1987-10-02 1987-10-02 Magnetic disk medium

Publications (2)

Publication Number Publication Date
JPS57167131A true JPS57167131A (en) 1982-10-14
JPH0421930B2 JPH0421930B2 (en) 1992-04-14

Family

ID=12850313

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56050122A Granted JPS57167131A (en) 1981-04-03 1981-04-03 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57167131A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6095721A (en) * 1983-10-28 1985-05-29 Hitachi Ltd Vertical magnetic recording medium and its production
US4542071A (en) * 1983-07-14 1985-09-17 International Business Machines Corporation Lubricated magnetic recording disk
JPS61126627A (en) * 1984-11-26 1986-06-14 Hitachi Ltd Magnetic recording medium
JPS62200524A (en) * 1986-02-26 1987-09-04 Hoya Corp Magnetic recording medium
JPS62229526A (en) * 1985-12-27 1987-10-08 Akai Electric Co Ltd Magnetic recording medium
JPH07134821A (en) * 1984-11-26 1995-05-23 Hitachi Ltd Magnetic recording medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5255603A (en) * 1975-10-31 1977-05-07 Nec Corp Magnetic memory element and production of same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5255603A (en) * 1975-10-31 1977-05-07 Nec Corp Magnetic memory element and production of same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4542071A (en) * 1983-07-14 1985-09-17 International Business Machines Corporation Lubricated magnetic recording disk
JPS6095721A (en) * 1983-10-28 1985-05-29 Hitachi Ltd Vertical magnetic recording medium and its production
JPS61126627A (en) * 1984-11-26 1986-06-14 Hitachi Ltd Magnetic recording medium
JPH0533456B2 (en) * 1984-11-26 1993-05-19 Hitachi Ltd
JPH07134821A (en) * 1984-11-26 1995-05-23 Hitachi Ltd Magnetic recording medium
JPS62229526A (en) * 1985-12-27 1987-10-08 Akai Electric Co Ltd Magnetic recording medium
JPH0414414B2 (en) * 1985-12-27 1992-03-12 Akai Electric
JPS62200524A (en) * 1986-02-26 1987-09-04 Hoya Corp Magnetic recording medium

Also Published As

Publication number Publication date
JPH0421930B2 (en) 1992-04-14

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