| 摘要 |
PROBLEM TO BE SOLVED: To improve traveling property and durability of a magnetic recording medium. SOLUTION: This magnetic recording medium has a magnetic layer 2 consisting of a ferromagnetic metal thin film on one main plane of a longitudinally extended non-magnetic support 1, and a back layer 4 formed by thin film forming technology on the other main plane different from a magnetic layer forming plane side. When magnetic layer side surface coarseness is assumed to be Ra(M) and back layer side surface coarseness is assumed to be Ra(B), Ra(B)>Ra(M) and 2Ra(M)<Ra(B)<15Ra(M) are satisfied. COPYRIGHT: (C)2005,JPO&NCIPI
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