| 发明名称 |
Composition of magnetic recording media |
| 摘要 |
A composition of magnetic recording media consisting of a ferromagnetic powder such as gamma -Fe2O3, a binder and single crystal alumina as a reinforcing agent. Single crystal alpha -alumina is preferably used as said single crystal alumina and its amount is preferably from 1 to 20% by weight based on the magnetic powder.
|
| 申请公布号 |
US4238341(A) |
申请公布日期 |
1980.12.09 |
| 申请号 |
US19790084453 |
申请日期 |
1979.10.12 |
| 申请人 |
HITACHI LTD |
发明人 |
CHIBA, KATSUYOSHI;FUKKE, HAJIME;ISHIHARA, HEIGO;KATO, YOSHIKI;MITSUYA, MUNEHISA;NAGASHIRO, WAICHI;TSUNODA, TERUO |
| 分类号 |
C09D5/23;G11B5/702;G11B5/708;(IPC1-7):H01F1/11 |
主分类号 |
C09D5/23 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
