| 摘要 |
PROBLEM TO BE SOLVED: To obtain a magnetic recording medium having >=239 kA/m coercive force (300 Oe), durability in an environment of an external magnetic field, and small noise and extra peak. SOLUTION: A planer or granular hexagonal ferrite magnetic material having >=4 m2/g BET value is used, and the magnetic recording medium obtd. by applying the hexagonal ferrite magnetic material has <=0.35 SFD and <=0.35 SQ⊥. In the production of the magnetic recording medium including a transfer process, a laminated body for transfer is produced by forming a magnetic layer having the characteristics above described as well as a release layer and an adhesive layer on a temporal supporting film, and the obtd. laminated body is used.
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