发明名称 |
SMOOTH LOW FRICTION MAGNETIC RECORDING MEDIUM |
摘要 |
Flexible magnetic recording media such as videotapes based on ferromagnetic oxide particles can provide high carrier-to-noise ratios previously available only with metal powder tapes when the recording layer has a high loading (at least 74% by weight) of oxide particles which have a high surface area (at least 40 m2/g) and includes free monobasic fatty acid comprising more than 1.5% by weight of the ferromagnetic oxide particles. The free fatty acid provides a coefficient of friction not exceeding 0.3. A preferred monobasic fatty acid is myristic acid. By incorporating into the binder a lubricant-adsorption inhibitor such as citric acid, a greater proportion of the fatty acid remains free. |
申请公布号 |
JPS61253633(A) |
申请公布日期 |
1986.11.11 |
申请号 |
JP19860102943 |
申请日期 |
1986.05.02 |
申请人 |
MINNESOTA MINING & MFG CO <3M> |
发明人 |
JIYON UIRIAMU MATSUKEI;RITSUKU RII BAN BUREN;RICHIYAADO JIENTEN KUO |
分类号 |
G11B5/702;C09D5/23;C09D127/04;C09D127/06;C09D175/06;G11B5/708;G11B5/71 |
主分类号 |
G11B5/702 |
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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