Tdk Corporation

Sumitomo Osaka Cement Co., Ltd.

Hitachi High-tech Corporation

Senju Metal Industry Co., Ltd.

Iwatsu Electric Company Ltd.

Nichia Corporation

Satoshi Ozawa

Kohsuke Shimazaki

Haruo Taguchi

Akihiro Takeda

Mitsuo Zen

Akio Abe

Kiyohiko Uchida

Hiroo Ushioda

Yasuhiko Shimada

Atsushi Tamura

Tetsuyoshi Ono

Shuto Ono

Kikutada Yoshida

Syuuzi Itoh

Hirokazu Ichikawa

Kunio Harada

Masahito Furukawa

Takeo Tsukada

Yu Ishige

Yoshinobu Kohara

Hideya Sakamoto

Junichi Yamazaki

Masaru Nanao

Masafumi Miyake

Atsushi Kishioka

Haruyoshi Yamamoto

Toshiki Maruyama

Norimasa Sakamoto

Ukyo Ikeda

Masayoshi Inoue

Kouji Mikami

Keisuke Itakura

Tatsuya Okamura

Masayoshi Konishi

Shuuji Matsumura

Kumiko Iezumi

Shigefumi Hisatsune

Eishi Fukuda

Sousuke Miyaji

Noriyuki Kozakai

Koji Taniwaki

Yumiko Kozasa

The present invention provides an electrolyte measuring device that makes it possible to detect failure in the device with a high degree of accuracy. The electrolyte measuring device has: an ion-selective electrode to which an ion solution including ions is supplied; a reference electrode; a measurement section to measure a potential difference between the ion-selective electrode and the reference electrode; and a current measurement section to measure an electric current flowing in the reference electrode.

Electrolyte measuring device

An automated analyzer includes a plurality of measurement units including a measurement section which measures a sample, a suction container connected to the plurality of measurement units through a first path, a vacuum exhaust system connected to the suction container through a second path, a discharge section connected to the suction container through a third path, a pressure adjustment mechanism disposed in the second path, and a control section which performs control such that the suction container is vacuum-exhausted by the vacuum exhaust system.

Automated analyzer and liquid discharge method for automated analyzer

The invention aims to suppress an effect of noise and heat generated from a memory on a measurement result in an ion concentration measuring device that uses an ion detection element for outputting a potential corresponding to the concentration of ions. The ion concentration measuring device according to the invention includes a cartridge having an ion detection element and a memory and supplies power to the memory in a time period excluding a time period for which the potential generated by the ion detection element is acquired.

Ion concentration measurement device

A piezoelectric actuator includes a piezoelectric element, a connection member of a shaft or weight connected to an element end surface of the piezoelectric element, the other one of the shaft and weight connected to a first end surface constituting an end surface opposing to the element end surface of the piezoelectric element, a wiring portion, and a resin portion. The piezoelectric element forms external electrodes on surfaces thereof, alternately laminates internal electrode layers with piezoelectric layers therebetween, and provides part of the external electrodes on the element end surface. The wiring portion has conductive portions corresponding to the external electrodes. The resin portion fixes the piezoelectric element, the connection member, and the wiring portion so that the element end surface opposes to the connection member with the wiring portion therebetween and that the conductive portions are electrically connected to the external electrodes.

Piezoelectric actuator

In object to provide a unit of piezoelectric element having a preferable bending strength and preferably used as a part of a driving unit, a unit of piezoelectric element comprising: a multilayer piezoelectric element, having internal electrodes laminated having a piezoelectric body layer in-between and a pair of external electrodes formed on side surfaces extending along laminating direction and electrically connected to the internal electrodes, a wiring part connected to the external electrodes via a solder part, wherein a solder is solidified, a resin part, joining one end surface in the laminating direction of the multilayer piezoelectric element and a mounting surface of a connection member placed to face the one end surface, wherein the resin part is continuous from the one end surface and the mounting surface to the solder part; and the resin part covers the solder part, is provided.

Lens driving device

Piezoelectric element

A piezoelectric element unit comprises an element body having internal electrodes laminated with piezoelectric layers therebetween and a pair of external electrodes electrically connected to the internal electrodes and an electric connection part for connecting a wiring part to the external electrodes. The electric connection part is composed of a conductive resin adhesive part and the conductive resin adhesive part is covered by a resin part.

Piezoelectric element unit and driving device

A piezoelectric element unit comprises an element body having an active part and an inactive part; and a first resin part bonding one end surface in the laminating direction of the element body to a mounting surface of a joint member placed to face the one end surface. The first resin part covers the mounting surface up to an outer side surface of the element body corresponding to an interface between the active part and the inactive part, a second resin part covers an outer surface of the first resin part covering the outer side surface of the element body at a position corresponding to the interface between the active part and the inactive part, and the second resin part also integrally covers the outer side surface of the element body corresponding to the active part.

Unit of piezoelectric element

An element body having a first and second internal electrodes exposure surface comprising a piezoelectric active area, wherein a first internal electrode faces a second internal electrode sandwiching piezoelectric body layer in-between along laminating direction, and a piezoelectric inactive area, wherein the piezoelectric body layer contacts only first or second internal electrode at one face along laminating direction, or the first internal electrodes or the second internal electrodes respectively face each other sandwiching piezoelectric body layer in-between along laminating direction, an insulating layer which covers the piezoelectric active area of the first and second internal electrodes exposure surface, and a resistance layer which is isolated from the piezoelectric active area by the insulating layer, placed at the first and second internal electrodes exposure surface connecting at least a part of the first and that of the second internal electrode in the piezoelectric inactive area and has lower electrical resistance value relative to that of the piezoelectric body layer.

Multilayer piezoelectric element

A laminated piezoelectric device comprising a device bodyon which a number of piezoelectric layersand internal electrodesare laminated, external electrodeselectrically connected to the internal electrodesand formed on the surface of the device body, an insulation layerand a resistance layer. The insulation layercovers at least a portion wherein internal electrodesare exposed on the surface of the device body, where mechanical displacement is generated by applying voltage. The resistance layeris formed to connect between external electrodesand has a lower electric resistance value than the insulation layer

Laminated piezoelectric actuator

In a conventional wave soldering bath, molten solder spouted from a second discharge nozzle did not have a uniform height, oxides were spouted from the nozzle opening and adhered to printed circuit boards, and constituent parts of the wave soldering bath were eroded. In a wave soldering bath according to the present invention, a cylinder is disposed at one end of a duct, a spiral pump is installed in the cylinder, and the width of a nozzle opening is made narrower than the width of the duct.

Wave soldering bath

In a wave soldering tank using a conventional screw pump, pulsation sometimes occurred in which molten solder spouting from the discharge nozzle moved up and down. The cause of the occurrence of the pulsation in a screw pump was that the gap between the screw pump and the casing was wide, so there was reverse flow through the gap. It is conceivable to narrow the gap, but if the gap is made narrow, the screw pump ends up contacting the casing if the screw pump becomes eccentric. A wave soldering tank according to the present invention makes the diameter of the inlet in the bottom of the casing smaller than the diameter of the screw pump so that reverse flow does not take place even if the gap between the screw pump and the casing is wide. Flow is made more stable by providing outwardly flaring guide walls on the outlet of the casing.

Wave soldering tank

A wave soldering tank is provided on which it is easy to perform maintenance, which does not have fluctuation of the height of spouted solder, which does not damage the rotating shaft of a discharge pump, and which can be stably used for long periods. The wave soldering tankhas a tank bodywhich houses molten solder S, a discharge pumpwhich pumps molten solder S, a discharge nozzlewhich spouts molten solder S which was sent to it by the discharge pumpupwards, a ducthaving the discharge pumpinstalled at one of its ends and the discharge nozzleinstalled at its other end, an oxidation preventing memberwhich has a prescribed size and which floats on the surface of the molten solder S, and an engaging meanswhich controls rotation of the oxidation preventing memberin a horizontal plane. The oxidation preventing memberhas a surrounding memberwhich extends downwards at its center and which surrounds the rotating shaftwith a gap between it and the rotating shaft, and a hollow spacein its interior for providing buoyancy.

Provided is a piezoelectric ceramic composition capable of being sintered at low temperatures and in a low-oxygen reductive atmosphere and capable of attaining a sufficient displacement even at high voltages of 1 kV/mm or more. The piezoelectric ceramic composition includes: a composite oxide, as a main constituent thereof, represented by the following composition formula; Cu and/or Ag, each as a first additive, Cu being included in a content &#x3b1;, in terms of CuO, falling within a range 0&#x3c;&#x3b1;&#x2266;0.5% by mass and Ag being included in a content &#x3b2;, in terms of AgO, falling within a range 0&#x3c;&#x3b2;&#x2266;0.4% by mass, in relation to the main constituent; wherein: composition formula: Pb[(ZnNb)TiZr]O, where 0.96&#x2266;a&#x2266;1.03, 0.005&#x2266;x&#x3c;0.05, 0.42&#x2266;y&#x2266;0.53, 0.45&#x2266;z&#x2266;0.56, and x+y+z=1.

Piezoelectric ceramic composition and laminated piezoelectric element

Growing community of inventors

Tokyo, Japan

Satoshi Ozawa