Abstract: The object of this invention is to provide a solid polymer electrolyte which is excellent in durability and of low cost, and membranes, solutions for electrode catalyst coating, membrane/electrode assemblies and fuel cells which use the electrolyte. According to this invention, there can be provided a fuel cell which comprises an electrode assembly having an electrode catalyst membrane formed therein, said catalyst membrane comprising a polymer electrolyte membrane held between an anode on one side of the principal plane of the electrolyte membrane and a cathode on the other side of the principal lane thereof, current collecting plates provided each independently in close contact, to the anode side and the cathode side of the electrode assembly, and electroconductive separators having gas supply passages to the anode and to the cathode provided on the outside surfaces of the current collecting plates.

Abstract: The fuel cell system includes a fuel cell stack, a fuel cell temperature sensor for measuring the internal temperature of the fuel cell, a voltage sensor for measuring the power generation voltage of the fuel cell, a current sensor for measuring the current flowing from the fuel cell, a radiator for radiating heat generated by the fuel cell, a fan attached to the radiator for controlling the heat radiation amount, a cooling water pump for increasing the pressure of a cooling fluid, a bypass valve for controlling the cooling fluid amount entering the radiator, and a controller, on the basis of the voltage information measured by the voltage sensor, the temperature information measured by the temperature sensor, and the current information measured by the current sensor, for controlling at least one of the operation amount of the cooling water pump, the operation amount of the fan, and the cooling fluid amount flowing through the bypass valve.

Abstract: The fuel cell system comprises a fuel cell having an anode supplied with fuel gas and a cathode supplied with oxidizing agent gas, a water penetration membrane-type moistening device for collecting moisture contained in cathode off gas discharged from a cathode exit of the fuel cell and moistening oxidizing agent gas, and a moisture regulating means for regulating moisture contained in cathode off gas between the cathode exit of the fuel cell and the water penetration membrane-type moistening device, wherein when operating the fuel cell at more than a predetermined rated load of the fuel cell, moisture contained in cathode off gas is reduced by the moisture regulating means.

Abstract: An increase in cost is minimized while realizing larger capacity. An optical disc 102 includes, from the bottom of the drawing: a substrate 104; a first information recording layer 108 formed on the substrate 104; and a first light transmission layer 110 having a thickness of about 20 ?m formed on the first information recording layer 108. A second information recording layer 114 is formed on the first light transmission layer 110, and a second light transmission layer 116 having a thickness of about 90 ?m is formed on the second information recording layer 114. A laser beam La is irradiated from the side of the second light transmission layer 116 to allow recording and/or reading of an information signal on/from the first and second information recording layers 108 and 114.

Abstract: A PEFC (polymer electrolyte fuel cell) has a cathode separator for a PEFC working at 100° C. or higher. The cathode separator has gas passages to fed oxidant gas. Each of the passages increases the sectional area thereof with going down stream along with gas flow. That is, the PEFC has the cathode separator whose passage is configured that the downstream side sectional area thereof is larger than the upstream side sectional area thereof. In addition, the area of contact between the rib surface of the anode separator and a diffusion layer of an anode is larger than the area of contact between the rib surface of the cathode separator and a diffusion layer of the cathode.

Abstract: The present invention is to offer a fuel cell system that efficiently removes the moisture contained in the anode offgas with the aid of a gas-liquid separator, which is installed in the circulation line of fuel gas, by sensing the pressure of the anode offgas led into the gas-liquid separator and that of the dry gas for absorbing the contained moisture and controlling the pressures within a suitable range.

Abstract: An optical disc cartridge is provided, which can accommodate an optical disc having a substrate and a light-transmitting layer thinner than the substrate and can suppress warpage of the optical disc within a predetermined limit value. The optical disc cartridge 32 is provided with an opening 20 on one side in a thickness direction and an opening 34 on the other side. An area of each opening is set to be ¼ or more of an area of the optical disc 16. Moreover, a ratio of the area of the opening 20 to the area of the opening 34 is set to be larger than ¼ and smaller than 4.

Abstract: A surface treatment of a light transmissive layer by spin coating is carried out in a simple way at low cost. When a light transmissive layer is to be formed by spin coating, the transfer of an information recording layer is carried out using a resin stamper having a convex portion in an outer peripheral portion. At the same time, an inclined plane (concave portion) is formed on the side of a substrate (member on which transfer is performed). As a result, coating is achieved in such a manner that a raise in the outer peripheral portion is prevented from being noticeable.

Abstract: A solid polymer electrolyte is made up of a polymer compound having a hydrocarbon aromatic group in the backbone thereof and including a side chain expressed by FORMULA 1: wherein “n” is 1, 2, 3, 4, 5, or 6. The solid polymer electrolyte may be incorporated into a membrane and may be used in a solution for covering an electrode catalyst.

Abstract: There is provided an intermediate for an optical recording medium, which can be uniformly coated with resin by the spin coating method without using a resin coating-assisting member, and allows formation of a central mounting hole without burrs. The intermediate comprises a hollow cylindrical protruding portion protruding from one surface on which functional layers are formed and a circular recess formed in a central portion of the other surface and having a diameter equal to that of the central mounting hole, and a temporary central hole formed to extend through a central portion of the recess and having a diameter smaller than that of the recess. The protruding portion has an outer diameter smaller than the diameter of the mounting hole and an inner diameter not smaller than the diameter of the temporary central hole, and has a central axis thereof substantially aligned with a center of the temporary central hole.

Abstract: An optical recording medium including a substrate and a light transmitting layer provided on the substrate so as to have a smaller thickness than that of the substrate, which is hardly warped and excellent in electrical characteristics and productivity, is provided. An optical recording medium includes: a substrate; and a light transmitting layer having a smaller thickness than that of the substrate. In this medium, a material of the substrate is a polyether imide resin.

Abstract: An optical recording medium includes a recording layer provided on a substrate. The recording layer includes first and second information layers and a spacer layer therebetween. The optical recording medium also includes a warpage adjusting layer provided on the side of the substrate opposite to the recording layer to reduce the warpage of the spacer layer caused by curing. A moisture proof layer is formed on the surface of the warpage adjusting layer opposite to the recording layer to reduce the warpage of the warpage adjusting layer caused by moisture absorption and releasing by the warpage adjusting layer.

Abstract: [Object]In order to provide an optical recording medium having an excellent repetitive overwrite property even when the optical recording medium includes a plurality of information layers stacked on a substrate through at least a transparent intermediate layer, and the information layers other than the farthest one from a light incident surface of a laser beam among a plurality of information layers include a recording film formed of a phase transition material having an Sb-based eutectic crystal structure.

Abstract: The present invention can achieve the prevention of the corrosion of a metal separator, a reduction in contact resistance and an enhancement in cooling effect in a fuel cell. The separator includes an electrically conductive flat plate and two electrically conductive channel plates superposed on each other with the electrically conductive flat plate interposed therebetween. A plurality of manifolds for passing a reaction fluid to an adjacent cell are provided in the electrically conductive flat plate. A plurality of zigzag or straight through-channels for permitting the flowing of the reaction fluid from the manifolds are formed in each of the two channel plates.

Abstract: The present invention provides a separator for a fuel cell constructed using a metallic pressed plate, in which a gas channel from a manifold to an electrode surface is formed simply, and a good sealing characteristic is realized. The separator is comprised of a metallic pressed plate, a resinous frame member, and a sealing frame having a sealing material integrated therewith, and a channel for introducing a gas from the manifold to an electrode surface is formed by a metallic surface, the sealing material and a resinous surface. An elastomer such as a rubber is used for the sealing material. Thus, the gas channel from the manifold to the electrode surface can be formed simply, and an excellent sealing characteristic to the gas and water is obtained.

Abstract: An optical information medium includes a disk-shaped substrate (100) having a center hole (101), an annular information recording area thereon, and an annular resin-based light-transmitting layer (102) thereon by which recording/reading laser beam is transmitted to the information recording area. The light-transmitting layer (102) terminates at a radially inner periphery which forms an annular raised rim (6). The rim is effective for protecting the light-transmitting layer from damages and dust adhesion, and when a plurality of such media are stacked, preventing the media from intimate contact.

Abstract: There is provided a mold component which makes it possible to mold a substrate for an optical recording medium which enables a functional layer having a uniform thickness to be formed thereon without using a resin-coating assisting member. A stamper holder holds a stamper thereon, and has a generally hollow cylindrical shape. An insertion hole formed through a central portion of the stamper has a diameter which is larger than an outer diameter of a cavity-side end of the stamper holder at a higher temperature of the holder than a normal temperature, and is slightly smaller than the outer diameter at the normal temperature of the holder. The cavity-side end inserted into the insertion hole at the higher temperature of the stamper is grasped by a rim of the insertion hole which is reduced in diameter at the normal temperature of the stamper.

Abstract: In an information recording medium according to the present invention, a recording layer, a first layer, and a second layer are formed so that a thermal conductivity of the first layer that contacts one surface of the recording layer and a thermal conductivity of the second layer that contacts another surface of the recording layer are both lower than a thermal conductivity of the recording layer and a track pitch is in a range of 0.1 ?m to 0.5 ?m, inclusive.

Abstract: In an information recording medium according to the present invention, a recording layer is formed so as to be sandwiched by a first resin layer and a second resin layer, and a track pitch is in a range of 0.1 ?m to 0.5 ?m, inclusive, wherein at least one resin layer out of the first and second resin layers has a permeability according to JIS Z0208 in a range of 1 g/m2·24 h to 250 g/m2·24 h, inclusive.

Abstract: The optical recording medium is an optical recording medium having at least one information layer including a recording film, characterized in that the recording film is formed by a phase change material including at least Sb, Ge and Mg as main components.