Abstract: A printing production line system for an electronic device includes a transport chamber with a robot transport line in which a self-traveling robot transports a base material in a sheet-fed manner in a free state, a plurality of processing chambers for forming an electronic device on the base material by printing on at least one side of the transport chamber, and base material transfer areas that performs loading of the base material to the processing chambers from the self-traveling robot and unloading of the base material to the self-traveling robot from the processing chambers. The transport chamber and the base material transfer area communicate with each other through respective openings, and a one-way air flow in each of the openings is formed by making an adjustment such that air pressure in the transport chamber is higher than air pressure in the base material transfer areas.

Abstract: An object of the present invention is to provide a printing production line system for an electronic device, the printing production line system that can achieve prevention of defective products caused by dust generated by a printing method and increase electronic device productivity, and a transport chamber provided with a robot transport line 100 in which a self-traveling robot 111, 112 that transports a base material 15 in a sheet-fed manner in a free state travels is provided, a plurality of processing chambers 6 for forming an electronic device on the base material 15 by printing are provided on at least one side of the transport chamber, a base material transfer area 601 that performs loading of the base material 15 to the processing chamber 6 from the self-traveling robot 111, 112 and unloading of the base material to the self-traveling robot 111, 112 from the processing chamber 6 is provided between the transport chamber and each processing chamber 6, the transport chamber and the base material transf

Abstract: A power generator according to an embodiment includes a hollow shaped speed-increasing gear, a hollow shaped power generation unit, a rotor shaft, and a position detector. With the input shaft and the output shaft of the hollow shaped speed-increasing gear coaxially disposed with a propeller shaft, and coupled to the propeller shaft. With the input shaft of the power generation unit coaxially disposed with the speed-increasing gear, the power generation unit generates power through the output of the speed-increasing gear. The rotor shaft is coaxially disposed with the speed-increasing gear and the power generation unit and rotates integrally with a propeller while being provided in hollow portions of the speed-increasing gear and the power generation unit. The position detector detects a rotational position of the propeller by detecting the rotational position of the rotor shaft.

Abstract: A power generator according to an embodiment includes a rotor shaft, a slip ring, a detecting shaft, and a position sensor. The rotor shaft through which wires from a propeller are inserted rotates with the propeller. The slip ring is coupled to the rotor shaft at one end. The detecting shaft is provided at the other end of the slip ring and rotates along with the rotor shaft. The position sensor detects the rotational position of the detecting shaft, thereby detecting the rotational position of the propeller.

Abstract: A power generator according to an embodiment includes a rotor shaft, a slip ring, a detecting shaft, and a position sensor. The rotor shaft through which wires from a propeller are inserted rotates with the propeller. The slip ring is coupled to the rotor shaft at one end. The detecting shaft is provided at the other end of the slip ring and rotates along with the rotor shaft. The position sensor detects the rotational position of the detecting shaft, thereby detecting the rotational position of the propeller.

Abstract: A power generator according to an embodiment includes a hollow shaped speed-increasing gear, a hollow shaped power generation unit, a rotor shaft, and a position detector. With the input shaft and the output shaft of the hollow shaped speed-increasing gear coaxially disposed with a propeller shaft, and coupled to the propeller shaft. With the input shaft of the power generation unit coaxially disposed with the speed-increasing gear, the power generation unit generates power through the output of the speed-increasing gear. The rotor shaft is coaxially disposed with the speed-increasing gear and the power generation unit and rotates integrally with a propeller while being provided in hollow portions of the speed-increasing gear and the power generation unit. The position detector detects a rotational position of the propeller by detecting the rotational position of the rotor shaft.

Abstract: This invention provides a rotating electrical machine including a rotor that has an even number of first permanent magnets aligned in a circumferential direction of the rotor, second permanent magnets of a number equal to that of the first permanent magnets, provided respectively between the stator and circumferential ends of the first permanent magnets adjacent to each other in the circumferential direction, and core pieces of a number equal to that of the first permanent magnets, provided respectively between the second permanent magnets adjacent to each other in the circumferential direction.

Abstract: This invention provides a rotating electrical machine including a rotor that has an even number of first permanent magnets aligned in a circumferential direction of the rotor, second permanent magnets of a number equal to that of the first permanent magnets, provided respectively between the stator and circumferential ends of the first permanent magnets adjacent to each other in the circumferential direction, and core pieces of a number equal to that of the first permanent magnets, provided respectively between the second permanent magnets adjacent to each other in the circumferential direction.

Abstract: An ink jet head, comprises partition walls made of an piezoelectric material and for dividing ink chambers; and driving electrodes provided on the partition walls, wherein lead conductors each of which is provided at a bottom portion of each ink chamber and is connected with a driving circuit, each lead conductor connected with the driving electrode so that a voltage is applied from the driving circuit through the lead conductor to the driving electrodes for each ink chamber, whereby the partition walls are deformed by shearing forces and an ink is jetted from each ink chamber.

Abstract: A method of manufacture an ink jet head in which an ink is jetted from a nozzle hole by applying an electric voltage to an electrode so as to deform ink chambers divided by a partition wall. The method includes the steps of providing plural piezoelectric base plates having polarization side by side on a first non-piezoelectric plate, forming plural grooves for the ink chambers on the piezoelectric base plates and at connecting portions where each edge of the plural piezoelectric base plates provided side by side comes to face other edge; and mounting a second non-piezoelectric base plate on the plural piezoelectric base plates as so to cover the plural grooves so that the ink chambers divided by the partition wall are formed.

Abstract: An ink jet head to jet ink from a nozzle hole by applying an electric voltage to an electrode so as to deform a shape of a space forming an ink chamber, comprises two piezoelectric base plates given polarization; two non-piezoelectric base plates, wherein the ink chamber is formed by being enclosed by the two piezoelectric base plates facing each other and the two non-piezoelectric base plates facing each other; each of the two piezoelectric base plates comprising at least two lamination layers made of a piezoelectric material, wherein the two lamination layers are laminated such that the laminated surface is substantially parallel to the non-piezoelectric base plates and polarizing directions of the two lamination layers are opposite to each other; and electrodes provided on surfaces of the piezoelectric base plates and the non-piezoelectric base plates, wherein the surfaces face the ink chamber.

Abstract: An ink jet head, comprises partition walls made of an piezoelectric material and for dividing ink chambers; and driving electrodes provided on the partition walls, wherein lead conductors each of which is provided at a bottom portion of each ink chamber and is connected with a driving circuit, each lead conductor connected with the driving electrode so that a voltage is applied from the driving circuit through the lead conductor to the driving electrodes for each ink chamber, whereby the partition walls are deformed by shearing forces and an ink is jetted from each ink chamber.

Abstract: In construction of a plastic molded semiconductor package provided with a heat sink and electrically conductive leads attached to the periphery of the heat sink, a conventional electrically insulating, adhesive bonding tape is replaced by a non-adhesive insulating sheet and support bars are locally provided in a lead frame between the leads. For uniting the leads to the heat sink, the support bars are fixed to the heat sink whilst sandwiching the insulating sheet. Elimination of the adhesive bonding tape greatly reduces intrusion of contaminants into the package, simplifies the production process and lowers the production cost.

Abstract: In construction of a plastic molded semiconductor package provided with a heat sink and electrically conductive leads attached to the periphery of the heat sink, a conventional electrically insulating, adhesive bonding tape is replaced by a non-adhesive insulating sheet and support bars are locally provided in a lead frame between the leads. For uniting the leads to the heat sink, the support bars are fixed to the heat sink whilst sandwiching the insulating sheet. No use of the adhesive bonding tape greatly reduces intrusion of contaminants into the package, simplifies the production process and lowers the production cost.

Abstract: In construction of a plastic molded semiconductor package including a semiconductor die arranged on a heat sink and provided with earth and power source terminal pads and earth and power source leads arranged on the heat sink via an insulating sheet whilst surrounding the semiconductor die, concentric earth and power source conductive galleries are arranged on the insulating sheet around the semiconductor die as an interface between the terminal pads on the semiconductor die and the leads. The earth gallery connects the earth terminal pads to the earth leads whereas the power source gallery connects the power source pads to the power source leads. Use of the interface galleries reduces mutual inductance between the leads greatly, makes the entire construction very compact and significantly lowers the production cost.

Abstract: In construction of a plastic molded semiconductor package incorporating a metallic heat sink, the heat sink is made of a thin plate but provided with a central die support depressed from the plane of a surrounding lead support, the section opposite the die support being exposed outside a plastic package. Use of a thin plate as the material enables efficient, continuous processing in production. Presence of the depressed die support assures elongated boundary between the heat sink and the plastic package, thereby effectively reducing undesirable invasion of outer contaminant.

Abstract: A method for detecting a fluidity of powder includes the steps of: (a) making the powder come into contact with a surface of a piezoelectric element which is parallel with an oscillating direction of the piezoelectric element that generates traverse wave oscillations; (b) detecting electrical characteristics of the piezoelectric element under a condition of resonance; and (c) detecting the fluidity of the powder in accordance with a change in the electrical characteristics with respect to a reference value.

Abstract: A memory board includes a board, a RAM (random access memory), a back-up battery for supplying a back-up power to the RAM, and a switch to switch a power source from a main power to the back-up battery when the voltage of the main power drops below a predetermined value. The back-up battery is located at the same position where either the switch or the RAM is located and mounted to cover the switch or the RAM.

Abstract: An image reading apparatus including a diffraction grating element including a transparent plate shaped in the form of consecutive steps to separate a light reflected from a document into a zero order light, -1 order light, and +1 order light. The transparent plate is arranged so that the zero order light has a wavelength in a blue region and +1 order light and -1 order light have wavelengths either in green and red regions, respectively or in red and green regions, respectively.

Abstract: A liquid crystal display device consisting essentially of a liquid crystal cell and a pair of polarizing plates disposed on the both sides of said liquid crystal cells is disclosed. The liquid crystal cell has a liquid crystal layer in which a nematic liquid crystal containing an optically active substance and forming a twisted structure is disposed between a pair of electrode substrates being oppositely disposed and each having an alignment layer, and said liquid crystal display device is characterized by satisfying Conditions (a) to (d);Condition (a): a twist angle .alpha. of the twisted structure in the liquid crystal layer is 220.degree. to 300.degree.;Condition (b): a pretilt angle .theta..sub.o made by a director of liquid crystal molecules contacting a face of the electrode substrate and the electrode substrate itself is not less than 25.degree.;Condition (c): a product, .DELTA.n.multidot.d, of a refractive anisotropy, .DELTA.