| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a magnetic recording medium such that the medium with a small shrinkage factor and a small anisotropy can be manufactured by optimizing tension and heating conditions. SOLUTION: In the manufacture of a magnetic recording medium in which the raw sheet of a magnetic recording medium is obtained by forming a magnetic layer on a nonmagnetic base material, and in which a heat treatment is applied to the running raw sheet, the method is characterized by that the temperature of the raw sheet is set at a temperature of 120 deg.C or higher but 220 deg.C or lower, and that the tension on the raw sheet is set a tension of 0.05 kg/m or higher but 3.0 kg/m or lower.
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