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AssigneeKao Corporation
InventorsAkira Ishikawa, Hidehiko Nakayama, Kazutaka Yamashita
Estimating the term…
A magnetic recording medium comprising a nonmagnetic support having formed thereon a plurality of magnetic layers including a top magnetic layer and an intermediate magnetic layer adjacent to the top magnetic layer, wherein the intermediate magnetic layer contains soft magnetic powder, the soft magnetic powder having, in its projective image, an average longer diameter <L> and a standard deviation of the longer diameter .DELTA.L satisfying the relationship represented by formula (1), and an average shorter diameter <W> and a standard deviation of the shorter diameter .DELTA.W satisfying the relationship represented by formula (2): 0.05.ltoreq..DELTA.L/<L>.ltoreq.0.8 (1) 0.05.ltoreq..DELTA.W/<W>.ltoreq.0.8 (2)
A magnetic recording medium comprising a nonmagnetic support having formed thereon a plurality of magnetic layers including a top magnetic layer and a lower magnetic layer adjacent to the top magnetic layer, wherein the lower magnetic layer contains soft magnetic oxide powder or soft magnetic metal powder, said soft magnetic oxide powder and soft magnetic metal powder having, in its projective image, an average long diameter <L>
Dependencies are inferred from the claim text.