| 摘要 |
There is discosed a magnetic recording medium having the excellent electromagentic conversion characteristics, an improved running durability and a less head abrasion. The magnetic recording medium comprises a support or a substrate having thereon the films, and a magnetic layer, wherein 1) a surface waviness of the magnetic layer is 0.022 mu m or less; 2) a surface waviness of the support on a magnetic layer side is 0.020 mu m or less; and 3) at least one of two surfaces of the support, or a film surface opposite to the substrate has thereon the protrusions satisfying the following relationships: a. an average height is not lower than 0.01 mu m and not higher than 0.25 mu m, b. a number of the protrusions not lower than 0.01 mu m is not less than 200 per 1 mm, c. a number of the protrusions not lower than 0.30 mu m is not more than 500 per 400 mm, and d. a ratio of a maximum height to an average height is not more than 10. x |
