公开(公告)号：US06584660B1

公开(公告)日：2003-07-01

申请号：US08257020

申请日：1994-06-08

申请人： Natsumi Shimogawa ,  Koji Kimura ,  Yukihisa Takeuchi

发明人： Natsumi Shimogawa ,  Koji Kimura ,  Yukihisa Takeuchi

IPC分类号： H04R1700

CPC分类号： H01L41/0973 ,  B41J2/14233 ,  H01L41/314 ,  H04R17/08 ,  Y10T29/42 ,  Y10T29/49401

摘要： A method for making a piezoelectric device wherein residual stresses in the piezoelectric transducer element of the piezoelectric device are relieved by forming a groove or grooves extending into a thick-walled region of the peripheral wall of a ceramic substrate in the piezoelectric device. The stresses to be relieved are caused by a difference in shrinkage between the ceramic substrate and the piezoelectric transducer as a result of sintering the substrate and the transducer to form an integral product.

摘要翻译： 一种制造压电器件的方法，其中压电器件的压电换能器元件中的残余应力通过在压电器件中形成延伸到陶瓷衬底的周壁的厚壁区域中的沟槽而被释放。 要缓解的应力是由于烧结基板和换能器以形成整体产品而导致陶瓷基板和压电换能器之间收缩的差异引起的。

公开(公告)号：US5969532A

公开(公告)日：1999-10-19

申请号：US841105

申请日：1997-04-30

申请人： Minoru Usui ,  Takahiro Katakura ,  Takaichi Wada ,  Motonori Okumura ,  Nobuo Takahashi ,  Natsumi Shimogawa ,  Keizo Miyata

发明人： Minoru Usui ,  Takahiro Katakura ,  Takaichi Wada ,  Motonori Okumura ,  Nobuo Takahashi ,  Natsumi Shimogawa ,  Keizo Miyata

IPC分类号： G01N27/20

CPC分类号： G01N27/205

摘要： A method of inspecting a crack in a ceramic substrate that is not exposed on the surface. The method can detect all cracks and make objective judgement possible by expressing the inspection result as numerical data. Conductors are disposed on both faces of a ceramic substrate, wherein one of the conductors is a conductive liquid; the insulation resistance value or an electric property dependent on the insulation resistance is measured with the conductive liquid or other conductors electrically connected to the conductive liquid which are used as electrodes.

摘要翻译： 检查未暴露在表面上的陶瓷基板中的裂纹的方法。 该方法可以检测所有裂纹，并通过将检验结果表示为数值来进行客观判断。 导体设置在陶瓷基板的两个面上，其中一个导体是导电液体; 绝缘电阻值或取决于绝缘电阻的电特性是用与电极连接的导电液体导电液体或其他导体进行测量的。

公开(公告)号：US5132705A

公开(公告)日：1992-07-21

申请号：US446608

申请日：1989-12-06

申请人： Yukihisa Takeuchi ,  Toshikazu Hirota ,  Shigeki Okada ,  Natsumi Shimogawa

发明人： Yukihisa Takeuchi ,  Toshikazu Hirota ,  Shigeki Okada ,  Natsumi Shimogawa

IPC分类号： B41J2/395

CPC分类号： B41J2/395

摘要： A recording head including at least one electrode, and a substrate structure for supporting each electrode. Each electrode and the substrate are held in contact with a recording medium or a planar intermediate member interposed between the recording medium and the recording head, so that an electric current is applied to the recording medium or the intermediate member. The substrate has a distal end portion extending from a proximal portion for contact with the recording medium and the intermediate member. The distal end portion has a constant thickness smaller than that of the proximal portion, as viewed in a direction perpendicular to a direction of extension of the end portion. The distal end portion is made of a material whose wear resistance is lower than that of the electrode.

公开(公告)号：US08512628B2

公开(公告)日：2013-08-20

申请号：US12691970

申请日：2010-01-22

申请人： Natsumi Shimogawa ,  Shuichi Ozawa ,  Nobuyuki Kobayashi

发明人： Natsumi Shimogawa ,  Shuichi Ozawa ,  Nobuyuki Kobayashi

IPC分类号： B28B1/14

CPC分类号： H01F41/0246 ,  B22F2998/10 ,  C04B35/265 ,  C04B35/638 ,  C04B35/82 ,  C04B2235/3267 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/6562 ,  C04B2235/9615 ,  C22C47/04 ,  C22C47/064 ,  H01F17/04 ,  H01F27/2823 ,  H01F2017/046 ,  H01F2017/048

摘要： A method for manufacturing a fired ceramic body including a metal wire wherein the metal wire is placed in a mold and then, a ceramic slurry having a heat-gelling characteristic or a thermoset characteristic is poured into the mold. Subsequently, the ceramic slurry is dried and hardened to form a ceramic-compact-before-fired, and then, the ceramic-compact-before-fired is fired. In this firing process, a degreasing of the ceramic compact is firstly performed, and thereafter, a temperature of the ceramic compact is increased up to a second temperature at which the metal wire is softened and the ceramic compact is fired at a second temperature increasing rate. The second temperature increasing rate is set at such a rate that a shrinkage ratio of the ceramic compact when the temperature of the ceramic compact reaches the second temperature is smaller than or equal to a predetermined threshold shrinkage ratio.

摘要翻译： 一种制造包括金属线的烧结陶瓷体的方法，其中将金属丝放置在模具中，然后将具有热凝胶特性或热固性特征的陶瓷浆料注入模具中。 随后，将陶瓷浆料干燥并硬化，从而形成烧制前的陶瓷 - 压坯，然后烧制陶瓷 - 压坯。 在该烧成工序中，首先进行陶瓷成形体的脱脂，然后将陶瓷成形体的温度升高至金属丝软化的第二温度，并且以第二升温速度烧结陶瓷成形体 。 第二升温速度设定为当陶瓷压块的温度达到第二温度时陶瓷压坯的收缩率小于或等于预定阈值收缩率的速率。

公开(公告)号：US08054151B2

公开(公告)日：2011-11-08

申请号：US12691959

申请日：2010-01-22

申请人： Nobuyuki Kobayashi ,  Kazuyuki Mizuno ,  Natsumi Shimogawa ,  Shuichi Ozawa

发明人： Nobuyuki Kobayashi ,  Kazuyuki Mizuno ,  Natsumi Shimogawa ,  Shuichi Ozawa

IPC分类号： H01F27/02

CPC分类号： H01F41/0246 ,  H01F17/04 ,  H01F27/255 ,  H01F27/34 ,  H01F2017/048 ,  Y10T29/49073

摘要： A compact inductor comprises a coil, a coil-burying body, and a body for a closed magnetic circuit. The coil-burying body is a fired porous ceramic body having a first magnetic permeability, in which the coil is buried. In the coil-burying body, “a through-hole 12a passing through inside of the coil along an axis of the coil” is formed. The body for a closed magnetic circuit is a fired dense ceramic body having a second magnetic permeability greater than the first magnetic permeability. The body for a closed magnetic circuit is arranged closely/densely at an outer circumference portion of the coil-burying body and in the through-hole. A magnetic path is therefore formed mainly within the body for a closed magnetic circuit, and the magnetic flux density is reduced in an area close to the coil. Accordingly, an inductor having the excellent superimposed DC current characteristic is provided.

摘要翻译： 紧凑型电感器包括线圈，线圈掩埋体和用于闭合磁路的主体。 线圈埋体是具有第一磁导率的烧制多孔陶瓷体，其中线圈被埋置。 在线圈埋层体中形成有沿着线圈的轴线穿过线圈内部的通孔12a。 用于闭合磁路的本体是具有大于第一磁导率的第二磁导率的烧制致密陶瓷体。 用于封闭磁路的主体紧密/密集地布置在线圈埋入体的外周部分和通孔中。 因此，主要在体内形成用于封闭磁路的磁路，并且在靠近线圈的区域中磁通密度减小。 因此，提供具有优异的叠加DC电流特性的电感器。

公开(公告)号：US20100194513A1

公开(公告)日：2010-08-05

申请号：US12691950

申请日：2010-01-22

申请人： Shuichi Ozawa ,  Natsumi Shimogawa ,  Katsuyuki Takeuchi ,  Yukio Aisaka

发明人： Shuichi Ozawa ,  Natsumi Shimogawa ,  Katsuyuki Takeuchi ,  Yukio Aisaka

IPC分类号： H01F5/00

CPC分类号： H01F17/0013 ,  H01F41/046 ,  H01F2017/002 ,  H01F2017/0066 ,  H05K1/165 ,  H05K3/4629 ,  H05K2201/083 ,  H05K2201/09672 ,  H05K2201/098

摘要： A layered inductor 10 is manufactured by layering “silver-based conductive layers” and “ferrite-based magnetic layers” and simultaneously firing these layers. The conductive layers are via-connected to form a helical coil 30. A shape of a cross sectional surface of the conductive layer, cut by a plane perpendicular to a longitudinal direction of each of the conductive layers is a substantial trapezoid shape, having an upper base and a lower base. A base angle θ of the trapezoid shape at both ends of the lower base is equal to or greater than 50° and is smaller than or equal to 80°.

摘要翻译： 通过层叠“银基导电层”和“铁氧体基磁性层”并同时烧制这些层来制造层状电感器10。 导电层通孔连接以形成螺旋线圈30.导电层的横截面形状由垂直于每个导电层的纵向的平面切割，呈大致梯形，具有上部 基地和较低的基地。 底角角度; 在下底座两端的梯形形状等于或大于50°并且小于或等于80°。