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    • 39. 发明授权
    • Record stylus for capacitance disks
    • 记录电容磁盘的触笔
    • US4503529A
    • 1985-03-05
    • US357355
    • 1982-03-12
    • Yoshiyo WadaKunio GotoHideaki Takehara
    • Yoshiyo WadaKunio GotoHideaki Takehara
    • G11B9/07G11B9/06
    • G11B9/075
    • For detection of signals recorded in the form of minute pits along tracks as capacitance variations, a record stylus is disclosed as comprising a shank having a portion of cross-sectional area decreasing toward one end of the stylus. A diamond, partially embedded in the shank, has a decreasing cross-sectional area toward said end of the stylus as a continuation of the decreasing cross-section of the shank. The bottom and rear face of the diamond are inclined so that the adjacent angle therebetween is smaller than 90 degrees. An electrode attached to the rear face of the diamond extends from the bottom of the diamond toward the other end of the stylus. The electrode is thus inclined in a direction opposite to the direction of movement of the recording medium to provide less concentration of electric lines of force on the rear bottom edge thereof.
    • 为了检测作为电容变化沿着轨道以微小凹坑的形式记录的信号,公开了一种记录触针,包括具有朝向触针的一端减小的横截面面积的一部分的柄。 部分地嵌入在柄中的金刚石具有朝向所述触针的所述端部的横截面积减小,作为所述柄的横截面减小的延续。 金刚石的底面和背面倾斜,使得它们之间的相邻角度小于90度。 附着在金刚石背面的电极从金刚石的底部向触针的另一端延伸。 因此,电极在与记录介质的移动方向相反的方向上倾斜,以在其后底边缘上提供较少的电力线浓度。
    • 40. 发明授权
    • Capacitance detection type record stylus having a conductive shank
    • 具有导电柄的电容检测型记录笔
    • US4488281A
    • 1984-12-11
    • US357354
    • 1982-03-12
    • Hideaki TakeharaYoshiyo WadaKunio GotoKeiji Segawa
    • Hideaki TakeharaYoshiyo WadaKunio GotoKeiji Segawa
    • G11B9/07G11B9/00
    • G11B9/075
    • A capacitance detection type record stylus comprises a conductive shank and a diamond partially embedded in the shank so that the diamond projects downwardly from one end of the shank. The shank is formed with a bottom face for making slidable contact with the disk record. The shank and diamond are formed with a pair of common rear faces inclined with respect to the axis of the stylus to define an electrode forming face therebetween which extends from the bottom face of the diamond partially into the shank. The electrode forming face is inclined at an acute angle with respect to the axis so that the lower end of the electrode forming face is located at a point forward with respect to the upper end thereof and subtends at the lower end thereof at such an angle that the diamond can be lapped without causing defects to occur on the lapped surfaces. The electrode forming face is entirely covered by a conductive layer so that the latter establishes electrical connection with the shank to allow signals detected by the electrode to pass through the shank to an external circuit.
    • 电容检测型记录笔包括导电柄和部分嵌入柄中的金刚石,使得金刚石从柄的一端向下突出。 柄形成有用于与盘记录滑动接触的底面。 柄和金刚石形成有相对于触针的轴线倾斜的一对公共后表面,以在其间限定一个从金刚石的底面部分延伸到柄中的电极形成面。 电极形成面相对于轴线倾斜成锐角,使得电极形成面的下端位于相对于其上端向前的点,并且在其下端处以与下端相对的角度 可以研磨金刚石而不会在研磨表面上发生缺陷。 电极形成面完全由导电层覆盖,使得后者与柄建立电连接,以允许由电极检测到的信号通过柄到外部电路。