发明名称 |
Magnetic position marker for a tape recorder using magnetically alignable particles for making the mark |
摘要 |
A cassette tape recorder including a device for making index marks on a strip denoting the position of magnetic tape relative to a magnetic head, the marking strip being on a cassette exterior surface and having magnetically alignable particles by which visible, magnetically erasable marks can be made. The marking device includes a controllable magnet for selectively magnetizing an element made of a soft magnetic material which conducts flux to the strip.
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申请公布号 |
US4125844(A) |
申请公布日期 |
1978.11.14 |
申请号 |
US19780871433 |
申请日期 |
1978.01.23 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
BRETSCHNEIDER, HERMANN;HUEBER, HERMAN P.;LOUZIL, FRIEDRICH;FISCHER, KARL;JAGER, LOTHAR;SAGAN, JOHANN |
分类号 |
G11B27/34;(IPC1-7):G03G19/00;G11B5/02 |
主分类号 |
G11B27/34 |
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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