发明授权
US4357699A Capacitance detection type stylus with diamond body and electrode having
the same wear resistance properties
失效
具有金刚石体和电极的电容检测型触针具有相同的耐磨性能
- 专利标题： Capacitance detection type stylus with diamond body and electrode having the same wear resistance properties
- 专利标题（中）： 具有金刚石体和电极的电容检测型触针具有相同的耐磨性能
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申请号： US247489申请日： 1981-03-25
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公开(公告)号： US4357699A公开(公告)日： 1982-11-02
- 发明人: Hideaki Takehara , Yoshiyo Wada , Kunio Goto , Kyusaku Suga , Hitoshi Watanabe
- 申请人： Hideaki Takehara , Yoshiyo Wada , Kunio Goto , Kyusaku Suga , Hitoshi Watanabe
- 申请人地址： JPX Tokyo JPX Yokohama
- 专利权人： Adamant Kogyo Co., Ltd.,Victor Company of Japan, Limited
- 当前专利权人： Adamant Kogyo Co., Ltd.,Victor Company of Japan, Limited
- 当前专利权人地址： JPX Tokyo JPX Yokohama
- 优先权： JPX55-38396 19800326; JPX55-38397 19800326
- 主分类号： G11B9/07
- IPC分类号： G11B9/07 ; G11B3/44
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.