Abstract: A polyimide resin composition includes a polyimide resin and a filler dispersed in the polyimide resin, in which the polyimide resin has a dicarboxylic acid group or an acid anhydride group of the dicarboxylic acid group at both ends, and the filler includes at least one inorganic compound selected from the group consisting of aluminum oxide, aluminum hydroxide, magnesium oxide, and magnesium hydroxide on a surface thereof.

Abstract: Provided is a slurry treatment apparatus includes: a treatment tank for performing any treatment of a solid-liquid reaction, a solid-gas reaction, a gas-liquid reaction, and solid-liquid separation on a slurry containing a metal or a metal compound; a first pipe; a second pipe; and a pump, in which one end of the first pipe has a suction opening for sucking the slurry from the treatment tank, the other end of the first pipe is connected to a suction port of the pump, one end of the second pipe is linked to a discharge port of the pump, the other end of the second pipe is connected to a microbubble generator, and the microbubble generator includes a throttle that throttles a flow of the slurry and a gas supply tube for supplying gas to the throttle, and supplies microbubbles to the slurry in the treatment tank.

Abstract: In a bubble measurement device for measuring bubbles moving in a liquid, the bubble measurement device includes a measurement chamber in which the bubbles in the liquid containing solid materials are introduced into the measurement chamber from below the measurement chamber, and providing a transparent slope facing diagonally downward at a position where the introduced bubbles rise, an image capturing device to capture an image of the bubbles passing the transparent slope, an introduction pipe provided below the measurement chamber to introduce the bubbles into the measurement chamber, and a bubble introduction valve that is immersed in the liquid to be measured and performs the introduction and blocking of the bubbles into the introduction pipe.

Abstract: An air bubble measurement device is a device that measures the air bubbles moving in the liquid. The air bubble measurement device includes a measurement chamber that holds a liquid. The measurement chamber includes an introduction port to introduce the air bubbles in the liquid from a lower side and a transparent inclined surface that faces obliquely downward and is disposed at a position to which the air bubbles present inside the liquid move up. The transparent inclined surface includes a hydrophilic membrane. The hydrophilic membrane has a contact angle with water of 20 degrees or less. This structural arrangement allows for reducing an attachment of the air bubbles on the transparent inclined surface even when the air bubbles become small. This allows for reducing stay of the air bubbles on the transparent inclined surface and allows for accurately measuring the states of the air bubbles (that is, the size and quantity of the air bubbles).

Abstract: A chuck mechanism operates a piston in a cylinder tube by using action of compressed air and opens and closes, by using a rod coupled to the piston, a pair of fingers, thereby gripping work W. The locking mechanism locks the fingers at work grip positions. The locking mechanism includes a first locking member, a second locking member, and a drive device. The first locking member is displaced when the pair of fingers are opened or closed. The second locking member retains the first locking member so as to lock the fingers at the work grip positions. The drive device relatively displaces the first locking member and the second locking member to locking positions and non-locking positions.

Abstract: A rotation transmission device is provided which includes, in its housing, an electromagnetic clutch, and a two-way clutch by which a first shaft and a second shaft are selectively engaged with, and disengaged from, each other. A rolling bearing is disposed at one axial end of the housing, and supports the second shaft and the housing. Locking arrangements prevent relative axial movement between the second shaft and the rolling bearing, and between the rolling bearing and the housing. A movement restricting arrangement is disposed at the other axial end of the housing, and restricting movement of the electromagnetic clutch toward the other axial end of the housing.

Abstract: An air bubble measurement device is a device that measures the air bubbles moving in the liquid. The air bubble measurement device includes a measurement chamber that holds a liquid. The measurement chamber includes an introduction port to introduce the air bubbles in the liquid from a lower side and a transparent inclined surface that faces obliquely downward and is disposed at a position to which the air bubbles present inside the liquid move up. The transparent inclined surface includes a hydrophilic membrane. The hydrophilic membrane has a contact angle with water of 20 degrees or less. This structural arrangement allows for reducing an attachment of the air bubbles on the transparent inclined surface even when the air bubbles become small. This allows for reducing stay of the air bubbles on the transparent inclined surface and allows for accurately measuring the states of the air bubbles (that is, the size and quantity of the air bubbles).

Abstract: A chuck mechanism operates a piston in a cylinder tube by using action of compressed air and opens and closes, by using a rod coupled to the piston, a pair of fingers, thereby gripping work W. The locking mechanism locks the fingers at work grip positions. The locking mechanism includes a first locking member, a second locking member, and a drive device. The first locking member is displaced when the pair of fingers are opened or closed. The second locking member retains the first locking member so as to lock the fingers at the work grip positions. The drive device relatively displaces the first locking member and the second locking member to locking positions and non-locking positions.

Abstract: A rotation transmission device includes an electromagnetic clutch including an armature, a rotor having an outer tubular portion and an inner tubular portion, and an electromagnet. A bearing support tube is provided at the outer end surface of a core supporting an electromagnetic coil of the electromagnet. A bearing is mounted in the bearing support tube so as to be axially fixed in position and not to be pulled out of the bearing support tube. The small-diameter tubular portion is provided at the end of the inner tubular portion of the rotor, and press-fitted in the bearing such that the rotor and the electromagnet form a unit.

Abstract: A rotation transmission device includes an inner ring provided on an input shaft, an outer ring provided on an output shaft, rollers mounted between the inner periphery of the outer ring and the outer periphery of the inner ring, an electromagnet as a driving source for moving a roller retainer mounted at the end portion of the housing on the side of the input shaft, a first bearing mounted between the electromagnet and the input shaft, a second bearing mounted between the end portion of the housing on a side of the output shaft and the output shaft, and a third bearing mounted between the inner ring and the outer ring. The rotation transmission device further includes a fourth bearing configured to prevent inclination of the axes of the input shaft and the output shaft relative to each other.

Abstract: The present invention provides a method for producing a silver powder, the method being capable of producing a silver powder with high productivity and at low cost, the silver powder having an average particle diameter of 0.3 to 2.0 ?m and a narrow particle size distribution, and provides a silver powder produced by the production method. According to the present invention, the method for producing a silver powder includes: quantitatively and continuously supplying each of a silver solution containing a silver complex and a reductant solution to a flow path; and quantitatively and continuously reducing a silver complex in a reaction solution obtained by mixing the silver solution with the reductant solution in the flow path, wherein the reaction solution is made to contain a dispersant, and also a silver concentration in the reaction solution is adjusted to be in a range of 5 to 75 g/L.

Abstract: A rotation transmission device includes an electromagnetic clutch which selectively engages and disengages a two-way clutch configured to selectively perform and stop transmission of torque between an input shaft and an output shaft. A spring holder fitted on the input shaft prevents rollers from axially moving. Spring holding pieces mounted to the spring holder are formed with respective engagement surfaces engaging with cam surfaces of an outer periphery of an inner ring such that the spring holder is rotationally fixed.

Abstract: A non-transitory computer-readable recording medium having stored therein an access monitoring program that causes a computer to execute a process, the process includes detecting, when authentication with identification information and a password of an account of a predetermined access source has failed, unauthorized access in accordance with whether both the identification information and the password have been changed for next authentication of the access source.

Abstract: A rotation transmission device includes an electromagnetic clutch including an armature, a rotor having an outer tubular portion and an inner tubular portion, and an electromagnet. A bearing support tube is provided at the outer end surface of a core supporting an electromagnetic coil of the electromagnet. A bearing is mounted in the bearing support tube so as to be axially fixed in position and not to be pulled out of the bearing support tube. The small-diameter tubular portion is provided at the end of the inner tubular portion of the rotor, and press-fitted in the bearing such that the rotor and the electromagnet form a unit.

Abstract: To provide an oscillating actuator which is capable of easily changing an oscillation start position of a shaft. An oscillating actuator includes an actuator main body 2 having a shaft 4 which is configured to oscillate about an axis L in a predetermined range of angle by means of a compressed air, and a fixing plate 3 for fixing the actuator main body 2 to a load device 30, wherein the actuator main body 2 and the fixing plate 3 are connected together by a connection mechanism 5 so as to be displaceable relative to each other in the rotation direction of the shaft 4 so that an oscillation start position A of the shaft 4 is changed by displacement of the actuator main body 2 and the fixing plate 3 relative to each other.