Abstract: An electrostatic spray apparatus configured such that multiple spinning units, each having multiple nozzles arranged two-dimensionally to electrostatically spray a polymer solution and a first collector disposed so as to be opposed to the multiple nozzles via an insulating sheet, are installed on collecting sections for holding a moving collecting sheet, and such that an air stream is formed orthogonal to the spray direction from the nozzles to the first collector and toward the collecting sheet inside the spinning unit.

Abstract: The present invention relates to a flexible printed circuit board which has extremely high adhesion performance and on which very fine circuit patterns can be formed by etching, and to a method for producing the same. In the present invention, in the flexible printed circuit board wherein a copper thin film made of copper or an alloy containing primarily copper is directly formed on at least one side of a plastic film substrate, and copper is formed further on the copper thin film by the electrolytic plating method, the above-mentioned copper thin film has a two-layer structure in which a layer including at least a crystalline structure is formed on the surface side thereof, and the X-ray relative intensity ratio between crystal lattice plane indices (200)/(111) in the above-mentioned crystalline structure is 0.1 or less.

Abstract: The present invention relates to a flexible printed circuit board which has extremely high adhesion performance and on which very fine circuit patterns can be formed by etching, and to a method for producing the same. In the present invention, in the flexible printed circuit board wherein a copper thin film made of copper or an alloy containing primarily copper is directly formed on at least one side of a plastic film substrate, and copper is formed further on the copper thin film by the electrolytic plating method, the above-mentioned copper thin film has a two-layer structure in which a layer including at least a crystalline structure is formed on the surface side thereof, and the X-ray relative intensity ratio between crystal lattice plane indices (200)/(111) in the above-mentioned crystalline structure is 0.1 or less.

Abstract: A roller conveyor has three-phase synchronous motors and feed rollers. The three-phase synchronous motors are operationally coupled to the respective feed rollers. The three-phase synchronous motors are driven by a three-phase AC voltage supplied from a three-phase AC power supply and the three-phase synchronous motors output a torque. Each feed roller is caused to roll to convey a work by the torque output from the corresponding three-phase synchronous motor. This structure provides an inexpensive roller conveyor which is easy to maintain.

Abstract: A roller conveyor has three-phase synchronous motors and feed rollers. The three-phase synchronous motors are operationally coupled to the respective feed rollers. The three-phase synchronous motors are driven by a three-phase AC voltage supplied from a three-phase AC power supply and the three-phase synchronous motors output a torque. Each feed roller is caused to roll to convey a work by the torque output from the corresponding three-phase synchronous motor. This structure provides an inexpensive roller conveyor which is easy to maintain.

Abstract: An implement for applying liquid having an elastic container for containing liquid, a head cylinder connected to the elastic container, and a liquid applying member provided in the head cylinder for applying liquid to a desired application surface, the elastic container having in an opening thereof a valve assembly for supplying and blocking liquid from the elastic container to the head cylinder and pressing portions in sides thereof, the valve assembly being actuated by pressing the pressing portions, the elastic container including an oval cylindrical portion having an elliptical cross section consisting of short arcuate portions and long arcuate portions, the long arcuate portions having actuators in the form of inward projected recesses at central portions thereof, respectively, for acting as pressing portions, the valve assembly including a valve rod carrying a slide member having a tapered surface, the slide member being disposed between the two actuators.

Abstract: An implement for applying a liquid includes a container for holding liquid, the container having a front end which is open and a front tube mounted on the front end of the container. The front tube has a forward outlet opening. A hollow accommodating member has an interior chamber, the accommodating member having a rear opening communicating the interior chamber with the container and a forward opening communicating the interior chamber with the front tube. A liquid feed member is movably disposed in the interior chamber between a closed position in which the liquid feed member engages the forward opening to block off communication between the interior chamber and the front tube and an open position in which the liquid feed member is disengaged from the forward opening. An end valve is axially movable in the front tube between a closed position and an open position and an open position. An applicator is mounted on the end valve.

Abstract: An implement for applying a liquid comprises a container having an opening at its front end, a front tube attached to the container forward end, a hollow accommodating member having a chamber in its interior and formed with a rearward communication hole and a forward communication hole for holding the chamber in communication with the interior of the container and the interior of the front tube respectively, a liquid feed member accommodated in the chamber and movable axially thereof, a biased end valve disposed inside the front tube providing a liquid retaining portion inside the front tube around the end valve for closing the forward end opening of the front tube, and an applicator having a capillary action extending through the forward end opening of the front tube and secured to the front end of the end valve.

Abstract: An implement for applying liquid includes an elastic container for containing liquid, a head cylinder connected to the elastic container, and a liquid applying member in the head cylinder for applying liquid to a surface, the elastic container having in an opening thereof a valve assembly for supplying and blocking liquid from the elastic container to the head cylinder and pressing portions in the sides thereof, the valve assembly being actuated by pressing the pressing portions. The elastic container includes an oval cylindrical portion having an elliptical cross section consisting of short arcuate portions and long arcuate portions, the long arcuate portions having actuators in the form of inward projected recesses at central portions thereof respectively for acting as pressing portions, the valve assembly including a valve rod carrying a slide member having a tapered surface, the slide member being disposed between the two actuators.

Abstract: A low-viscosity ink ball-point pen has a tip press-fitted at its rear end into a forward end of a barrel member housing an ink source therein. A ball is rotatably held in a ball socket at the forward end of the tip and supplied with ink from the ink source through an ink-feeding capillary element extending from the ink source into an axial hole formed in the rear end portion of the tip and extending toward the ball socket. The ball socket and the hole are communicated by a reduced axial passage extending between the bottoms of the ball socket and the hole. The forward end portion of the ink-feeding capillary element cooperates with the bottom of the hole to define a substantially closed chamber of a substantial volume whereby a substantial quantity of ink can be accumulated therein for uninterrupted writing for a long period of time.