公开(公告)号：US4357699A

公开(公告)日：1982-11-02

申请号：US247489

申请日：1981-03-25

申请人： Hideaki Takehara ,  Yoshiyo Wada ,  Kunio Goto ,  Kyusaku Suga ,  Hitoshi Watanabe

发明人： Hideaki Takehara ,  Yoshiyo Wada ,  Kunio Goto ,  Kyusaku Suga ,  Hitoshi Watanabe

IPC分类号： G11B9/07 ,  G11B3/44

CPC分类号： G11B9/075

摘要： A stylus for detecting signals as electrostatic capacitance variations of the information recorded in the form of geometric variations on a disc record comprises a diamond body and a stylus electrode attached to one surface of the body which makes contact with the disc record. The electrode extends downward to the plane of the contact face of the diamond body to detect the recorded information. The crystallographic orientations of the diamond body are such that the contact face is inclined at a predetermined angle to a crystallographic plane having the tendency to wear substantially at the same rate as the wearing rate of the electrode at its downward tip so that the electrode keeps contact with the record surface for a long period of use.

摘要翻译： 用于检测信号作为在盘记录上以几何变化形式记录的信息的静电电容变化的触笔包括附着在与盘记录接触的身体的一个表面上的金刚石体和触针电极。 电极向下延伸到金刚石体的接触面的平面以检测记录的信息。 金刚石体的晶体取向使得接触面以与电极在其向下尖端处的磨损速率基本相同的速度倾向于结晶面倾斜，使得电极保持接触 记录表面长期使用。