发明名称 High density recording playback element construction
摘要 In a pickup for the playback of a high density signal recording stored at the surface of a record carrier, which pickup includes a scanning element and a mechanical-electrical pressure transducer connected to the scanning element by a layer of adhesive, undesired vibrations of structural parts of the pickup during playback are prevented by providing at least that part of the surface of the pickup where the pressure transducer is connected to the scanning element with a layer of a hardened casting mass, which is applied in the liquid state in which it has a viscosity of between 5 and 50 cP at 20 DEG C. Preferably, the remainder of the surface of the pickup is also covered with such a coating, with the exception of the scanning surface of the scanning element.
申请公布号 US3946167(A) 申请公布日期 1976.03.23
申请号 US19740525312 申请日期 1974.11.19
申请人 TED BILDPLATTEN AKTIENGESELLSCHAFT AEG-TELEFUNKEN-TELDEC 发明人 SCHULTZ, BODO
分类号 G11B3/46;H04R17/04;(IPC1-7):H04R17/04 主分类号 G11B3/46
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