FORMING METHOD OF LUBRICANT FILM FOR MAGNETIC RECORDING MEDIUM

Japanese Patent JP3786473

B2

PROBLEM TO BE SOLVED: To provide a forming method of a lubricating film by which the amt. of a phosphorus-contg. fluorine compd. in a lubricant film formed on a protective film of a magnetic recording medium can be controlled to a predetermined density.
SOLUTION: This magnetic recording medium 1 produced by successively laminating a base layer, a magnetic layer 15 and a protective film 16 on a medium substrate is dipped in a lubricant liquid to which a phosphorus-contg. fluorine compd. is added to form a lubricating film 2 on the surface of the protective film 16. After the lubricating film 2 is formed, the amt. of phosphorus in the lubricating film 2 is measured by total reflection fluorescence X-ray analysis. Based on the measured value, the concn. of the phosphorus-contg. fluorine compd. in the lubricant liquid is controlled. Therefore, the amt. of the phosphorus-contg. fluorine compd. in the lubricating film of a magnetic recording medium 1 next produced can be controlled. As for the phosphorus-contg. fluorine compd., a fluorine compd. having a phosphagen ring can be used. By controlling the phosphorus-contg. fluorine compd. in the lubricating film to a predetermined density, friction between the magnetic recording medium and a head can be decreased.

Ken Akita
Shigeru Tsuboyi
Yoshinobu Okumura

JP18316896A

June 14, 2006

July 12, 1996

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Store Media Incorporated

C10M105/74; G11B5/84; G11B5/64; G11B5/71; B05D5/08; B05D7/00; B05D7/24; C10M177/00; C10N30/06; C10N40/08; C10N40/18; C10N50/02; C10N50/08; C10N70/00; G11B5/725; (IPC1-7): G11B5/84; C10M105/74; G11B5/71; //C10N40:08; C10N50:08; C10N70:00

JP883423A
JP3266216A
JP63162870A
JP7297245A
JP88314A
JP6235688A

Toshiyuki Maruyama
Takao Miyano

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