JPS61148623A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS61148623A
JPS61148623A JP27004184A JP27004184A JPS61148623A JP S61148623 A JPS61148623 A JP S61148623A JP 27004184 A JP27004184 A JP 27004184A JP 27004184 A JP27004184 A JP 27004184A JP S61148623 A JPS61148623 A JP S61148623A
Authority
JP
Japan
Prior art keywords
monomolecular
layer
monomolecular layer
recording medium
friction coefficient
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
JP27004184A
Inventor
Hikari Ishimoto
Toru Nagai
Nobuyoshi Seto
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP27004184A priority Critical patent/JPS61148623A/en
Publication of JPS61148623A publication Critical patent/JPS61148623A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the rust preventive property, friction characteristic, and abrasion resistance of the titled magnetic recording medium by forming a protective film of a monomolecular layer of a higher fatty acid or its metallic salt or especially of one or two monomolecular layers which are formed under conditions where the surface pressure is regulated to ≥35dynes/cm on a magnetic thin film.
CONSTITUTION: A protective film of a monomolecular layer of a higher fatty acid or its metallic salt is a uniform film wherein molecules are densely arranged in a single layer, and has an excellent lubricating characteristic. The friction coefficient is regulated to ≤0.2, especially when the monomolecular layer is formed by the Langmuir-Blodgett's technique under conditions at ≥35dynes/cm surface pressure. The friction coefficient when the number of the built-up films of a monomolecular layer is odd (one layer), namely the alkyl group is directed toward the surface side is smaller than the friction coefficient when the number is even (2 layers). Besides, the still time is controlled to ≥6.5hr by the protective film, and the film is superior in abrasion resistance. Meanwhile, when the surface of a magnetic recording medium after shuttling is observed, the surface roughness decreases as the number of the built-up films of a monomolecular layer decreases, and the surface roughness can hardly seen in one or two monomolecular layers.
COPYRIGHT: (C)1986,JPO&Japio
JP27004184A 1984-12-21 1984-12-21 Magnetic recording medium Pending JPS61148623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27004184A JPS61148623A (en) 1984-12-21 1984-12-21 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27004184A JPS61148623A (en) 1984-12-21 1984-12-21 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS61148623A true JPS61148623A (en) 1986-07-07

Family

ID=17480704

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27004184A Pending JPS61148623A (en) 1984-12-21 1984-12-21 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS61148623A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01232532A (en) * 1988-03-11 1989-09-18 Fujitsu Ltd Magnetic recording medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5075001A (en) * 1973-11-02 1975-06-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5075001A (en) * 1973-11-02 1975-06-20

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01232532A (en) * 1988-03-11 1989-09-18 Fujitsu Ltd Magnetic recording medium

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