发明名称 |
Magnetic recording medium comprising two magnetic layers each layer comprising ferromagnetic powder, binder, a branched and unbranched silicone, with carbon black in the upper layer |
摘要 |
A magnetic recording medium comprising a nonmagnetic support and at least two magnetic layers on the support, each magnetic layer containing a ferromagnetic powder and a binder, wherein the lower magnetic layer comprises at least one layer containing a branched fatty acid-modified silicone, but not carbon black, and the upper magnetic layer comprises at least one layer containing a branched fatty acid-modified silicone and carbon black having a DBP absorption oil amount of 100 to 250 ml/100 g. The magnetic recording medium has improved lubricating characteristics.
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申请公布号 |
US5316845(A) |
申请公布日期 |
1994.05.31 |
申请号 |
US19930069681 |
申请日期 |
1993.06.01 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
TAKAHASHI, MASATOSHI;INABA, HIROO;TAGA, KAZUAKI |
分类号 |
G11B5/708;B32B27/18;B32B33/00;C09C1/48;C09D5/23;C09D7/12;C10M103/02;C10M105/24;C10M105/34;C10M107/50;C10N40/18;C10N70/00;G11B5/71;G11B5/716;(IPC1-7):G11B5/00 |
主分类号 |
G11B5/708 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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