| 发明名称 |
ROTARY MAGNETIC HEAD DEVICE |
| 摘要 |
<p>PURPOSE:To reproduce the still picture image stable for a long time by so forming the edges of a rotary drum opposing to stationary drums that no polygonal lines are produced between the same and the outside circumferential face thereof and that the section becomes arc.</p> |
| 申请公布号 |
JPS5412809(A) |
申请公布日期 |
1979.01.30 |
| 申请号 |
JP19770078138 |
申请日期 |
1977.06.30 |
| 申请人 |
SONY CORP |
发明人 |
KAWAMURA NAOKO;MIYAZAWA AKIO |
| 分类号 |
G11B15/61;G11B5/52;G11B15/60;H04N5/78 |
主分类号 |
G11B15/61 |
| 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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