发明名称 Magnetic recording medium and manufacturing method thereof
摘要 A magnetic recording medium and manufacturing method thereof are disclosed. The recording medium comprises a support, a plurality of magnetic layer being provided on a surface of the support, and a backcoat layer being provided on the other surface of the support and comprising a binder and a carbon black, wherein an outermost magnetic layer being provided at the outermost portion from the support among said plurality of magnetic layers comprises, a binder, a magnetic powder and a carbon black in which the weight ratio of the carbon black to the magnetic powder is 0.1 to 0.5 percent, a magnetic layer other than the outermost magnetic layer comprises a binder, a magnetic powder different from the magnetic powder contained in the outermost layer and a carbon black in which the weight ratio of the carbon black to the magnetic powder is zero to 0.4 percent. The plurality of magnetic layers are coated on the support under a condition of wet on wet.
申请公布号 US5151323(A) 申请公布日期 1992.09.29
申请号 US19900588689 申请日期 1990.09.28
申请人 KONICA CORPORATION 发明人 KAWAHARA, SETSUKO;NAKANO, YASUSHI;KOYAMA, NOBORU
分类号 C09C1/48;C09D5/23;C09D7/12;G11B5/708;G11B5/716;G11B5/73;G11B5/735;G11B5/84;G11B5/842 主分类号 C09C1/48
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