Abstract: An optical pickup device, which can effectively prevent occurrence of trouble in recording and reproducing of information due to the fact that an objective lens for each optical beam is contaminated while not adding unnecessary parts and while reducing a cost, is provided. An optical pickup device (P1) which performs the recording or reproducing of information in or from an optical disc (13) by using an optical beam (B) or (D), comprises: objective lenses (11) and (12) on which cleaning films which are activated by radiation of the optical beam (B) and clean their surfaces are formed in an optical path, and a control unit (15) for setting an optical path of the optical beam (B) in such a way that the optical beam (B) reflected by the optical disc (13) is radiated on the objective lens (12).

Abstract: A fuel cell comprises a cathode catalyst layer and an anode catalyst layer disposed on each surface of an electrolyte membrane, an oxidant gas passage facing the cathode catalyst layer, and a fuel gas passage facing the anode catalyst layer. The cathode catalyst layer contains a metal catalyst. In a region (A), in which the differential electric potential between the cathode catalyst layer and the electrolyte membrane is larger than in another region, the metal catalyst content of the cathode catalyst layer or the specific surface area of the metal catalyst in the form of minute particles is increased, and thus a deterioration in electric power generation efficiency caused by melting of the metal catalyst due to the large differential electric potential is prevented.

Abstract: A catalyst layer 2 is formed by conductive particles 4 carrying catalyst particles 5, and a boundary layer 3 is disposed adjacent to the catalyst layer 2 and is positioned between a portion which is easily contacted with an oxygen gas and the catalyst layer 2. The boundary layer 3 is formed by the conductive particles 4 carrying the catalyst particles 5 and a catalyst-carrying amount in the boundary layer 3 is smaller than a catalyst-carrying amount in the catalyst layer 2 and a hydrophilic treatment is carried out on the conductive particles 4 of the boundary layer 3 by a hydrophilic material, such that the hydrophilic characteristics of the conductive particles of the boundary layer are higher than that of the catalyst layer.

Abstract: There is provided a data processing device able to surely eject a recording medium out of a main body of the device even when the recording medium is received in a case while a locking member having adherence and elasticity of the case is locked with a center hole of the recording medium. A CD player includes: a main body of the device 3; a carrying unit 5 for ejecting and retracting a CD 2 from the main body of the device 3; a clamping and reading out unit 6 for reading out data recorded on the CD 2; and a microcomputer 4. The carrying unit 5 includes: a disc guide 17; and a roller arm 18 having a carrying roller 20. The microcomputer 4 makes the turntable 26 of the clamping and reading out unit 6 rotate while the CD 2 is held between the disc guide 17 and the carrying roller 20 when the carrying unit 5 fails to eject the CD 2 out of the main body of the device 3.

Abstract: The present invention is to provide a multilayered printed circuit board free from cracks attributed to thermal expansion difference between a solder resist layer and another part and a multilayered printed circuit board of the present invention comprises a conductor circuit and a resin insulating layer serially formed on a substrate in an alternate fashion and in repetition and a solder resist layer formed as an outermost layer, and the solder resist layer contains an inorganic filler.

Abstract: The present invention is to provide a multilayered printed circuit board free from cracks attributed to thermal expansion difference between a solder resist layer and another part and a multilayered printed circuit board of the present invention comprises a conductor circuit and a resin insulating layer serially formed on a substrate in an alternate fashion and in repetition and a solder resist layer formed as an outermost layer, and the solder resist layer contains an inorganic filler.

Abstract: A terminal joining structure includes a terminal having a tubular barrel portion and a flange portion that is integrally formed at the axis-direction end of the barrel portion, a conductor substrate on which is opened a through-hole for inserting the barrel portion, and a ring that fits on the barrel portion on the opposite side of the conductor substrate. On the barrel portion is formed a taper that increases in diameter toward the flange portion. The diameter of the larger-diameter portion of the taper is larger than the inner diameter of the through-hole. The terminal is caulked to cause radially outward expansion of an end part of the barrel portion, which passes through the ring, on the opposite side of the conductor substrate and is fixed to the conductor substrate together with the ring.

Abstract: A 3-level power converter is provided, which is reduced in size of the converter, reduced in floating inductance of each of wirings interconnecting between respective elements, and easily attached with a snubber circuit. The 3-level power converter performs on/off control of first to fourth switching elements 1 to 4 so as to output a 3-level voltage from an AC output terminal AC, wherein the power converter has a first module 11 including the first and fourth switching elements 1 and 4 as a configuration unit, a second module 12 including the second and third switching elements 2 and 3 as a configuration unit, a third module 14 including a first coupling diode 5 as a configuration unit, and a fourth module 13 including a second coupling diode as a configuration unit, and the second module 11, the fourth module 14, the third module 13, and the first module 11 are sequentially arranged in a line from a position near the AC output terminal AC.

Abstract: A fuel cell system which prevents the deterioration of the fuel cell stack when feeding of the oxidant gas is paused under a load to perform a fuel conservation operation. Controller shuts down oxidant gas compressor and cooling water circulating pump to execute fuel conservation operation at a low fuel cell system load. The controller gives a current draw instruction to electric power controller. In the fuel conservation operation, electric power controller draws a current larger than zero from fuel cell stack, and keeps the total charge drawn per unit time constant or substantially constant.

Abstract: The present invention is to provide a multilayered printed circuit board free from cracks attributed to thermal expansion difference between a solder resist layer and another part and a multilayered printed circuit board of the present invention comprises a conductor circuit and a resin insulating layer serially formed on a substrate in an alternate fashion and in repetition and a solder resist layer formed as an outermost layer, and the solder resist layer contains an inorganic filler.

Abstract: A catalyst layer 2 is formed by conductive particles carrying catalyst particles 5, and a boundary layer is disposed adjacent to the catalyst layer 2 and is positioned between a portion which is easily contacted with an oxygen gas and the catalyst layer. The boundary layer 3 is formed by the conductive particles 4 carrying the catalyst particles 5 and a catalyst-carrying amount in the boundary layer 3 is smaller than a catalyst-carrying amount in the catalyst layer 2. Or a hydrophilic treatment is carried out to the conductive particles 4 of the boundary layer 3 by a hydrophilic material, while the conductive particles 4 in the boundary layer 3 do not carry the catalyst particles 5.

Abstract: A fuel cell includes an electrolyte membrane (1), a fuel electrode catalyst layer (2a) disposed on a first surface of the electrolyte membrane, an electrically conductive fuel electrode separator (4a), having a fuel gas flow channel (5a), which is disposed in contact with a first surface of the fuel electrode catalyst layer, an oxidizer electrode catalyst layer (2b) disposed on a second surface in opposition to the first surface of the electrolyte membrane, an electrically conductive oxidizer electrode separator (4b), having an oxidizer gas flow channel (5b), which is disposed in contact with a first surface of the oxidizer electrode catalyst layer, and a connecting member (7), formed with an electrically conductive member, which provides an electrical connection between the fuel electrode separator and the oxidizer electrode separator.

Abstract: The present invention is to provide a multilayered printed circuit board free from cracks attributed to thermal expansion difference between a solder resist layer and another part and a multilayered printed circuit board of the present invention comprises a conductor circuit and a resin insulating layer serially formed on a substrate in an alternate fashion and in repetition and a solder resist layer formed as an outermost layer, and the solder resist layer contains an inorganic filler.

Abstract: A fuel cell (1) comprises a cathode catalyst layer (3) and an anode catalyst layer (4) disposed on each surface of an electrolyte membrane (2), an oxidant gas passage (8) facing the cathode catalyst layer (3), and a fuel gas passage (9) facing the anode catalyst layer (9). The cathode catalyst layer (3) contains a metal catalyst (16).

Abstract: To suppress a rapid voltage change in each power generation cell constituting a fuel cell stack, power storage devices 11 are respectively connected to each power generation cell 2 or each cell assembly including a plurality of power generation cells 2 of a fuel cell stack 1 to transfer electric charges between each power generation cell 2 and the corresponding power storage device 11. This allows a voltage control to be performed for each power generation cell 2, and thus improves the durability of the fuel cell stack.

Abstract: An object of the present invention is to provide a polyamide resin composition having high mechanical properties and high heat resistance while achieving a satisfactory balance between various physical properties. A molded product made of this polyamide resin exhibits a lower warpage and excellent surface appearance. A method for producing the polyamide, resin composition is also provided. The present invention provides a polyamide resin composition containing a polyamide resin and swelling mica treated with a polyether compound having a bisphenol structure. The present invention also provides a method for making the polyamide resin composition including melt-mixing a polyamide resin with a polyether compound.

Abstract: An object of the present invention is to provide a polyamide resin composition having high mechanical properties and high heat resistance while achieving a satisfactory balance between various physical properties. A molded product made of this polyamide resin exhibits a lower warpage and excellent surface appearance. A method for producing the polyamide, resin composition is also provided. The present invention provides a polyamide resin composition containing a polyamide resin and swelling mica treated with a polyether compound having a bisphenol structure. The present invention also provides a method for making the polyamide resin composition including melt-mixing a polyamide resin with a polyether compound.

Abstract: The present invention provides flame retardants which can provide high flame retardancy by means of silicon compounds. A flame retardant comprising an aromatic group-containing organosiloxane compound wherein said compound has the following mean composition formula (1), does not flow at 23° C., flows at 200° C., does not gelate when heated at 200° C. with stirring for 30 minutes, has a number average molecular weight of not less than 2,000 and at the same time, dissolves not less than 100 g in 1 L of a solvent toluene at 23° C.: R1mR2nSiO(4-m-n)/2??(1) in the formula, R1 represents a univalent aliphatic hydrocarbon group containing 1 to 4 carbon atoms; R2 represents a univalent aromatic hydrocarbon group containing 6 to 24 carbon atoms; R1 and R2 each may contain two or more species; and m and n are numbers satisfying 1.1?m+n?1.7 and 0.4?n/m?2.5.

Abstract: A disk inserting/ejecting apparatus includes: a disk carrying device which carries a disk between an insertion/ejection slot to/from which a disk is inserted/ejected and a disk driving position; right and left detection levers which come into contact with the disk and move at the time of carrying the disk; and a mounting plate in which notches are formed, the notches positioning so that the positions of the right and left detection levers before the disk comes into contact with the right and left detection levers and the positions of the right and left detection levers after contact between the disk and the right and left detection levers is cancelled are different from each other.

Abstract: A polymer electrolyte fuel cell stack is provided with a plurality of unit cells, a gas supply manifold supplying reaction gases to each of the plurality of unit cells, a gas exhaust manifold through which the reaction gases are exhausted, and a pressure loss control mechanism controlling the reaction gases passing trough the gas supply manifold, respective flow passages of the plurality of unit cells and the exhaust manifold to control pressure loss of at least one of the gas supply manifold and the gas exhaust manifold corresponding to the flow rates of the reaction gases in a way to establish a predetermined ratio between the pressure loss of at least one of the gas supply manifold and the gas exhaust manifold and pressure loss in the respective flow passages of the plurality of unit cells.