Abstract: To provide a valve control device, a drive control device, and a fluid control device, which are suitable for adjusting a valve.

Abstract: A displacement magnifying mechanism, polishing device, actuator, electronic component processing apparatus, dispenser, and air valve which can easily control a drive system. The displacement magnifying mechanism includes a base; a piezoelectric element of which an end is attached to a mounting surface of the base, the piezoelectric element extending along a first longitudinal direction; a support member of which an end is attached to the mounting surface side by side with the piezoelectric element, the support member extending along a second longitudinal direction which intersects with the first longitudinal direction; an operating portion attached to each of other ends of the piezoelectric element and the support member to allow the operating portion to be displaced, in response to an expansion/contraction of the piezoelectric element, along a displacement direction; and a compression member attached to the base and the operating portion so as to compress the piezoelectric element.

Abstract: To provide a valve control device, a drive control device, and a fluid control device, which are suitable for adjusting a valve.

Abstract: A displacement magnifying mechanism includes a base portion serving as a substrate; a first attachment portion and a second attachment portion which are provided on a surface on one side of the base portion; a first piezoelectric element and a second piezoelectric element of which one ends are attached to the first attachment portion and the second attachment portion; an operating portion which is connected to the other ends of the first piezoelectric element and the second piezoelectric element and generates a displacement due to expansion and contraction of the piezoelectric element; and a link portion which is disposed at the center between the first piezoelectric element and the second piezoelectric element, links the operating portion and the base portion, and is made of a material having a higher Young's modulus than that of the first piezoelectric element and the second piezoelectric element.

Abstract: The present invention relates to a method of measuring and evaluating rigidity of a target object or mechanical output, such as force, displacement, and mechanical energy generated by a piezoelectric actuator and applied to the target object, according to only a measured value of electric quantity without use of a mechanical sensor, and a method of controlling the piezoelectric actuator, and a device using these methods. Steps of finding equivalent circuit constants of the piezoelectric actuator; applying a voltage to the piezoelectric actuator and measuring electrical quantity flowing into the piezoelectric actuator due to the applied voltage, or applying an electric charge to the piezoelectric actuator and measuring voltage applied to the piezoelectric actuator due to the applied electric charge; and measuring and evaluating one or more of force, displacement, or mechanical energy generated by the piezoelectric actuator and applied to a target object, or rigidity of a target object are included.

Abstract: The present invention relates to a method of measuring and evaluating rigidity of a target object or mechanical output, such as force, displacement, and mechanical energy generated by a piezoelectric actuator and applied to the target object, according to only a measured value of electric quantity without use of a mechanical sensor, and a method of controlling the piezoelectric actuator, and a device using these methods. Steps of finding equivalent circuit constants of the piezoelectric actuator; applying a voltage to the piezoelectric actuator and measuring electrical quantity flowing into the piezoelectric actuator due to the applied voltage, or applying an electric charge to the piezoelectric actuator and measuring voltage applied to the piezoelectric actuator due to the applied electric charge; and measuring and evaluating one or more of force, displacement, or mechanical energy generated by the piezoelectric actuator and applied to a target object, or rigidity of a target object are included.

Abstract: A cartridge for fuel cell for supplying a fuel to a fuel cell, the cartridge for fuel cell including: a cartridge case 32 having a plurality of holes 34 formed at least in one side 32a; a fuel vaporization stabilization layer 38 formed on the side with said plurality of holes 34 formed in inside the cartridge case 32; and a fuel impregnation material 36 sealed inside the cartridge case 32.

Abstract: A heat plate for fixation includes: a metallic base plate; and a heating resistor arranged on a reverse face of the metallic base plate, the heating resistor being formed by laminating, at least, an electric insulating layer and heating resistor layer in this order on the metallic base plate, wherein the heat plate is capable of raising the temperature of the metallic base plate to a fixing temperature when the heating resistor layer is energized and heated. A semicircular heating member for fixation includes the heat plate which is curved so that the metallic base plate has a convex surface, a belt type fixing device is provided with the semicircular heating member, and an electrophotographic image forming apparatus is provided with the belt type fixing device having the semicircular heating member.

Abstract: A heat plate for fixation comprising: a metallic base plate; and a heating resistor arranged on a reverse face of the metallic base plate, the heating resistor being formed by laminating, at least, an electric insulating layer and heating resistor layer in this order on the metallic base plate, wherein the heat plate is capable of raising the temperature of the metallic base plate to a fixing temperature when the heating resistor layer is energized and heated. A semicircular heating member for fixation comprises the heat plate which is curved so that the metallic base plate has a convex surface, a belt type fixing device is provided with the semicircular heating member, and an electrophotographic image forming apparatus is provided with the belt type fixing device comprising the semicircular heating member.

Abstract: A heat plate for fixation comprising: a metallic base plate; and a heating resistor arranged on a reverse face of the metallic base plate, the heating resistor being formed by laminating, at least, an electric insulating layer and heating resistor layer in this order on the metallic base plate, wherein the heat plate is capable of raising the temperature of the metallic base plate to a fixing temperature when the heating resistor layer is energized and heated. A semicircular heating member for fixation comprises the heat plate which is curved so that the metallic base plate has a convex surface, a belt type fixing device is provided with the semicircular heating member, and an electrophotographic image forming apparatus is provided with the belt type fixing device comprising the semicircular heating member.

Abstract: A heat plate for fixation comprising: a metallic base plate; and a heating resistor arranged on a reverse face of the metallic base plate, the heating resistor being formed by laminating, at least, an electric insulating layer and heating resistor layer in this order on the metallic base plate, wherein the heat plate is capable of raising the temperature of the metallic base plate to a fixing temperature when the heating resistor layer is energized and heated. A semicircular heating member for fixation comprises the heat plate which is curved so that the metallic base plate has a convex surface, a belt type fixing device is provided with the semicircular heating member, and an electrophotographic image forming apparatus is provided with the belt type fixing device comprising the semicircular heating member.

Abstract: A heat plate for fixation comprising: a metallic base plate; and a heating resistor arranged on a reverse face of the metallic base plate, the heating resistor being formed by laminating, at least, an electric insulating layer and heating resistor layer in this order on the metallic base plate, wherein the heat plate is capable of raising the temperature of the metallic base plate to a fixing temperature when the heating resistor layer is energized and heated. A semicircular heating member for fixation comprises the heat plate which is curved so that the metallic base plate has a convex surface, a belt type fixing device is provided with the semicircular heating member, and an electrophotographic image forming apparatus is provided with the belt type fixing device comprising the semicircular heating member.

Abstract: A heat plate for fixation comprising: a metallic base plate; and a heating resistor arranged on a reverse face of the metallic base plate, the heating resistor being formed by laminating, at least, an electric insulating layer and heating resistor layer in this order on the metallic base plate, wherein the heat plate is capable of raising the temperature of the metallic base plate to a fixing temperature when the heating resistor layer is energized and heated. A semicircular heating member for fixation comprises the heat plate which is curved so that the metallic base plate has a convex surface, a belt type fixing device is provided with the semicircular heating member, and an electrophotographic image forming apparatus is provided with the belt type fixing device comprising the semicircular heating member.

Abstract: Each of common electrode teeth 76-1, 76-2 and 76-3, and each of individual electrode teeth 77-1 and 77-2 are alternately arranged in the X1-X2 direction at predetermined intervals g. When a positive voltage is applied to the individual electrode teeth 77-1 and 77-2, an electric field 83-1 indicated by a line of electric force 82-1 is produced in a piezoelectric plate member 65 between the individual electrode tooth 77-1 and the common electrode tooth 76-1 and an electric field 83-2 indicated by a line of electric force 82-2 is produced between the individual electrode tooth 77-1 and the common electrode tooth 76-2. Likewise, an electric field 83-3 indicated by a line of electric force 82-3 is produced between the individual electrode tooth 77-2 and the common electrode tooth 76-2 and an electric field 83-4 indicated by a line of electric force 82-4 is produced between the individual electrode tooth 77-2 and the common electrode tooth 76-3.

Abstract: A piezoelectric type ink-jet printing head including a pressure chamber plate having a plurality of pressure chambers and a plurality of ink supply ports for supplying ink into the respective pressure chambers, a nozzle plate having a plurality of nozzles and a piezoelectric element having a surface, at least parts thereof defining a plurality of displacement portion. The nozzle plate is attached to one of the surfaces of the pressure chamber plate, in such a manner that the respective nozzles are connected to the respective pressure chambers. The other surface of the pressure chamber plate is attached to the piezoelectric element, in such a manner that each of the displacement portions of the piezoelectric element defines at least one of walls of each of the pressure chambers.

Abstract: A piezoelectric fluid pump includes a stationary pump base and a plurality of piezoelectric elements arranged in parallel on the stationary pump base, each of the piezoelectric elements having, in a polarizing direction thereof or in a direction perpendicular to the polarizing direction, a first end fixed to the stationary pump base and a free, second end. The free, second ends of respective pairs of adjacent the piezoelectric elements are connected to each other, for respective units of the fluid pump. Between the pair of piezoelectric elements and between the stationary pump base and the connecting means, pressure chambers are defined. There are gaps are between walls of the piezoelectric elements and walls of piezoelectric elements of adjacent units.

Abstract: The present invention provides a print head control device for a wire dot printer, capable of preventing the occurrence of ghost dots to enable the wire dot printer to print characters and the like with a high print quality. The print head control device comprises a print head driving circuit for charging and discharging piezoelectric elements to advance and retract a printing wire, and a print head control circuit for controlling the print head driving circuit.

Abstract: A printing head including a plurality of impact printing wires constituting a dot matrix and a plurality of actuators for respectively and selectively driving the printing wires. Each actuator is constituted of a movable member to which the printing wire corresponding thereto is connected, a base member, a piezoelectric device mounted on the base member, and first and second leaf springs. The first leaf spring is connected between the movable member and the piezoelectric device, and the second leaf spring is connected between the movable member and the base member in parallel relationship to the first leaf spring. Each of the first and second leaf springs has a shape such that it is narrowest at the central portion thereof and is gradually widened toward the opposite ends thereof. Owing to this shape, a stress generating at the opposite ends of each leaf spring can be reduced to thereby prevent breakage of each leaf spring.

Abstract: A Fleming-type ink jet head in which a group of electrodes constituting one of two rows of a plurality of pairs of electrodes for causing currents to flow across ink channels are integrally formed for the purpose of improving the accuracy with which the pairs of electrodes are relatively positioned as well as reducing the manufacture cost. The resistance between each of the pairs of electrodes is detected and the width or magnitude of a pulse current caused to flow between the electrodes is controlled based on the data of this detection, thereby preventing a deterioration in printing quality due to the non-uniformity of the resistance. Also, the width or magnitude of current pulse is controlled with respect to the positions of the channels to compensate for the non-uniformity of the magnetic field intensity through the channels stacked between magnets, whereby a deterioration in printing quality due to the non-uniformity of the magnetic field intensity is prevented.

Abstract: An apparatus for driving a printing head of a wire-dot printer, the head including a plurality of electroexpansive elements for driving respective printing wires cooperatively constituting a wire-dot matrix and in accordance with print pattern data designating the existence, or non-existence, of a dot to be printed by the respective, plural dot-impact printing wires in each of a succession of print cycles. Each electroexpansive element, selectively, is expanded and shrunk by an electrical charge/discharge, thereby to move the respective printing wire and perform a dot printing operation. The time intervals T1 and T2 respectively for the charge and discharge in each of a succession of printing cycles are: in the case of continuous dots, T1=A, T2=B' for the first dot, T1=A', T2=B' for successive dots intermediate the first and the last dots, and T1=A', T2=B for the last dot of the continuous dots, and in the case of a single dot, T1=A, T2=B, wherein A>A', and B>B'.