| 摘要 |
The present invention provides a metal thin film type magnetic recording medium having improved tracking stability and friction stability, by improving the lubricating layer in consideration of the state of forming the lubricating layer in view of the distribution of the lubricant.The magnetic recording medium according to the present invention at least has, in turn, a metal magnetic layer, a protective layer and a lubricating layer on one surface of a nonmagnetic base. The covering ratio of a surface of the lubricating layer with the lubricant is 65-75%. The lubricating layer is produced by applying a mixture of solvents containing at least three solvents selected from three groups, that is from at least one from group (1): ketone solvents having a boiling point of 40-130° C., at least one from group (2): aliphatic hydrocarbon solvents having 4 carbons-10 carbons, and at least one from group (3) alcoholic solvents having equal or less than 6 carbons, the mixture ratio of these solvents of respective groups being preferably selected to be: (1) ketone solvents 5-20% wt.; (2) aliphatic hydrocarbon solvents 10-40% wt.; and (3) alcoholic solvents 40-80% wt.
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