公开(公告)号：US06411194B1

公开(公告)日：2002-06-25

申请号：US09794596

申请日：2001-02-27

申请人： Motoshi Shindoh ,  Keiji Segawa ,  Mitsuru Otsuki

发明人： Motoshi Shindoh ,  Keiji Segawa ,  Mitsuru Otsuki

IPC分类号： H01C1012

摘要： The invention provides a production method capable of forming a thin film resistance element having a thickness and a shape controlled in a high accuracy in a printed circuit board. The production method of a thin film resistance element formed on a printed circuit board, has the steps of forming a thin film resistance layer having a predetermined thickness on the printed circuit board through an insulation layer by a dry process used in producing a semiconductor, forming an electrically conductive layer on the thin resistance layer, and etching the electrically conductive layer selectively so as to make, at least, a pair of electrically conductive pads, resulting in the thin film resistance element having a predetermined value of resistivity between the pair of electrically conductive pads. Thereby, it is possible to form the thin film resistance element having a thickness and a shape controlled in a high accuracy on the printed circuit board.

公开(公告)号：US4498163A

公开(公告)日：1985-02-05

申请号：US403346

申请日：1982-07-30

申请人： Keiji Segawa ,  Mikio Naoi ,  Masaki Murakami

发明人： Keiji Segawa ,  Mikio Naoi ,  Masaki Murakami

IPC分类号： G11B9/07 ,  G11B9/00 ,  G11B3/00

CPC分类号： G11B9/075

摘要： An electrostatic capacitance type pickup stylus for use on an information storage disc comprises a crystal of diamond including a sliding face for slidable contact with the information storage disc, an electrode face supporting thereon a conductive electrode layer for detecting signals on the information storage disc as changes in electrostatic capacitance, a pair of first and second angularly spaced back faces adjoining the electrode face, and a pair of first and second angularly spaced guide faces adjoining each other and the first and second back faces, respectively. The sliding face is in the form of a pentagon defined by ridges respectively of the electrode face, first and second back faces, and first and second guide faces, the first and second back faces being symmetrical with respect to a line passing through a central point on the ridge of the electrode face and a junction between the ridges of the first and second guide faces, the first and second guide faces being symmetrical with respect to the line. The first and second back and guide faces are located in areas in which they can easily ground without causing damages to ridges between the adjoining faces.

摘要翻译： 一种在信息存储盘上使用的静电电容式拾取笔，包括金刚石晶体，其包括用于与信息存储盘滑动接触的滑动面，支撑在其上的导电电极层的电极面，用于检测信息存储盘上的信号作为变化 在静电电容中，分别与电极面相邻的一对第一和第二角度间隔开的面以及分别彼此相邻的一对第一和第二角度间隔的引导面以及第一和第二后表面。 滑动面是由电极面，第一和第二背面以及第一和第二引导面的脊分别限定的五边形的形式，第一和第二背面相对于穿过中心点的线对称 在电极面的脊部和第一和第二引导面的脊部之间的接合处，第一和第二引导面相对于线对称。 第一和第二后导向面位于可以容易地接地的区域中，而不会对相邻面之间的脊部造成损害。

公开(公告)号：US4410974A

公开(公告)日：1983-10-18

申请号：US300451

申请日：1981-09-08

申请人： Keiji Segawa ,  Masaki Murakami ,  Keiichiro Doi

发明人： Keiji Segawa ,  Masaki Murakami ,  Keiichiro Doi

IPC分类号： B24B19/16 ,  C30B31/22 ,  G11B9/07 ,  G11B3/44

CPC分类号： G11B9/075 ,  B24B19/165 ,  C30B29/04 ,  C30B31/22

摘要： A capacitance detection type record stylus comprises a body of artificial diamond having flat faces lying parallel to the crystal planes {111} and {100} wherein adjoining identical crystal planes are either {111} or {100}. A crystal plane {110} is formed between any two of the adjoining identical crystal planes by lapping the edge between them. A conductive material is deposited on the crystal plane {110} to form an electrode for detecting signals recorded as geometric variations on a recording medium. Because of the aligned carbon atoms beneath the crystal plane {110}, a substantial amount of the conductive material penetrates deeply into the diamond making the electrode resistant to wear.

摘要翻译： 电容检测型记录笔包括具有平面平行于晶面{111}和{100}的平面的人造金刚石本体，其中相邻的相同晶面为{111}或{100}。 通过研磨它们之间的边缘，在任意两个相邻的相同晶面之间形成一个晶面{110}。 导电材料沉积在晶面{110}上以形成用于检测记录在记录介质上的几何变化的信号的电极。 由于在晶面{110}下方排列的碳原子，大量的导电材料深入到金刚石中，使电极耐磨损。

公开(公告)号：US4398282A

公开(公告)日：1983-08-09

申请号：US261793

申请日：1981-05-08

申请人： Keiji Segawa ,  Norio Matsuda ,  Masaki Murakami

发明人： Keiji Segawa ,  Norio Matsuda ,  Masaki Murakami

IPC分类号： G11B9/07 ,  G11B3/46 ,  G11B9/06

CPC分类号： G11B9/075 ,  Y10T29/435

摘要： A cylindrical diamond body is shaped to form a truncated conical portion. A conductive layer is deposited on the diamond body extending from the truncated end to the other end of the body. The conical portion of the body with the conductive layer being attached thereto is lapped to remove portions of the layer and the diamond body to form a pair of substantially flat surfaces extending from the truncated end toward the opposite end leaving the conductive layer to form a narrow width electrode for picking just one information signal stored in the form of minute pits along a spiral track or concentric tracks.

摘要翻译： 圆柱形金刚石体被成形为形成截头圆锥形部分。 导电层沉积在金刚石主体上，从主体的截头端延伸到另一端。 搭接有导电层的主体的圆锥形部分被重叠以去除该层和金刚石体的部分，以形成一对基本上平坦的表面，该表面从截头端向相对端延伸，留下导电层以形成窄的 宽度电极，用于拾取沿着螺旋轨道或同心轨道以微小凹坑的形式存储的一个信息信号。

公开(公告)号：US4120742A

公开(公告)日：1978-10-17

申请号：US736392

申请日：1976-10-28

申请人： Akira Asano ,  Keiji Segawa

发明人： Akira Asano ,  Keiji Segawa

IPC分类号： C30B15/00 ,  C30B15/34 ,  G11B9/07 ,  G11B3/44

CPC分类号： G11B9/075 ,  C30B15/00 ,  C30B15/34 ,  C30B29/20 ,  Y10T29/42

摘要： A stylus for the capacitive pickup of information signals inscribed in a recording medium as a geometrical variation comprises a corundum single crystal rod having two parallel side faces, which are inherently flat and optically smooth, and a thin electrode film coated on one of these two side faces. The electrode film is normal to the c-axis of the crystal, and the longitudinal axis of the rod coincides with one of the a-axes. The rod is formed by the "edge defined film fed growth" method, wherein corundum melt is made to spread as a film over a flat shape-defining surface and a seed crystal is pulled vertically through a capillary so that an elongated crystal is continuously grown. The c-axes of the grown and seed crystals are parallel to the shape-defining surface and normal to the growth direction. Thereby, the rod is formed without the need of machining and abrading steps, other than steps for the shaping of a tip.

摘要翻译： 用于作为几何变化记录在记录介质中的信息信号的电容拾取器的触针包括具有固有平坦和光学平滑的两个平行侧面的刚玉单晶棒，以及涂覆在这两个侧面之一上的薄电极膜 面孔 电极膜垂直于晶体的c轴，杆的纵向轴线与a轴之一重合。 棒通过“边缘限定膜进料生长”方法形成，其中将刚玉熔体作为膜扩展到平坦形状限定表面上，并且通过毛细管垂直拉动晶种，使得细长晶体连续生长 。 生长和晶种的c轴平行于形状限定表面并垂直于生长方向。 因此，不需要加工和研磨步骤就可以形成杆，除了用于成形末端的步骤之外。

公开(公告)号：US4675765A

公开(公告)日：1987-06-23

申请号：US683859

申请日：1984-12-20

申请人： Keiji Segawa ,  Hirofumi Imaoka ,  Hisao Kinjo ,  Toshiya Sakurai

发明人： Keiji Segawa ,  Hirofumi Imaoka ,  Hisao Kinjo ,  Toshiya Sakurai

IPC分类号： G11B5/23 ,  G11B5/127 ,  G11B5/187 ,  G11B5/21 ,  G11B5/255 ,  G11B5/31 ,  G11B5/58

CPC分类号： G11B5/1871 ,  G11B5/1276 ,  G11B5/21 ,  G11B5/255 ,  G11B5/3106 ,  G11B5/58

摘要： A magnetic recording and/or reproducing element comprises a main element body, and windings wound around the main element body. The main element body has a pair of extremely thin layers made from a ferromagnetic material, and the extremely thin layers oppose each other at respective edges thereof so as to constitute a gap. Each of the thin layers are sandwiched between a pair of support members which are made from a non-magnetic and abrasion proof material. A contact surface is formed on a vertex part of the main element body, for making contact with a magnetic recording medium so as to record and/or reproduce a signal on and/or from the magnetic recording medium. The main element body has one or a plurality of side surfaces which form a predetermined angle with respect to the contact surface and define the peripheral edge of the contact surface so that the contact surface has a predetermined shape with an extremely small area and has the gap at an approximate center of the predetermined shape.

摘要翻译： 磁记录和/或再现元件包括主元件体和围绕主元件本体缠绕的绕组。 主元件体具有由铁磁材料制成的一对非常薄的层，并且极薄层在其各自的边缘处彼此相对以构成间隙。 每个薄层夹在由非磁性和耐磨材料制成的一对支撑构件之间。 接触表面形成在主元件主体的顶点部分上，用于与磁记录介质接触，以便在磁记录介质上记录和/或再现信号。 主元件主体具有相对于接触表面形成预定角度的一个或多个侧表面，并且限定接触表面的周缘，使得接触表面具有预定形状，具有极小的面积并具有间隙 在预定形状的大致中心处。

公开(公告)号：US4488281A

公开(公告)日：1984-12-11

申请号：US357354

申请日：1982-03-12

申请人： Hideaki Takehara ,  Yoshiyo Wada ,  Kunio Goto ,  Keiji Segawa

发明人： Hideaki Takehara ,  Yoshiyo Wada ,  Kunio Goto ,  Keiji Segawa

IPC分类号： G11B9/07 ,  G11B9/00

CPC分类号： G11B9/075

摘要： 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.

摘要翻译： 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。