发明名称 Magnetic recording medium
摘要 A magnetic recording medium is disclosed which is excellent in video and audio signal output as well as in S/N ratio. The recording medium comprises first and second magnetic layers provided on a support in this order from said support and the first magnetic layer has a SFD value of from 0.38 to 0.60 and the second magnetic layer has a SFD value of from 0.30 to 0.45, wherein SFD is defined as follows: SFD= DELTA H/Hc where DELTA H is a half-width of magnetic field at the extreme value of differential coefficient of a magnetic induction-magnetic field hysterisis curve, and Hc is a coercive force of a magnetic material.
申请公布号 US5188907(A) 申请公布日期 1993.02.23
申请号 US19910734912 申请日期 1991.07.24
申请人 KONICA CORPORATION 发明人 KAWAHARA, SETSUKO;NAKANO, YASUSHI;SHIMIZU, YUJI;YAMAUCHI, YASUHISA
分类号 G11B5/716 主分类号 G11B5/716
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