Abstract: A liquid ejection head includes ejection nozzles, pressure compartments, a supply port, and first pillar structures. The pressure compartments which each communicate with a corresponding ejection nozzle of the ejection nozzles and are each combined with an energy generating element configured to generates ejection energy for ejecting liquid. The supply port supplies the liquid to the pressure compartments. The first pillar structures are arranged between the supply port and the pressure compartments. The pressure compartments is each defined by a flow path walls arranged in line and parallel to each other. A liquid flow path is formed and configured to allow the liquid to flow through the liquid flow path from the at least one supply port via the first pillar structures into the pressure compartments. A longest clearance between the first pillar structures is smaller than a shortest clearance between the flow path walls and the first pillar structures.

Abstract: A wiring board includes an insulation substrate, a wiring conductor, a connection conductor, first and second wiring layers, and a groove. The insulation substrate includes a first face. The wiring conductor is located in or on and the connection conductor is located in the insulation substrate. A part of the wiring conductor is included at each of the first and second wiring layers. The groove includes an opening at the first face. The wiring conductor includes an electrode pad and a solid conductor. The solid conductor is included at the second wiring layer. The connection conductor includes first and second connection conductors, a second connection conductor, and an intersection part. The intersection part intersects the groove at the first wiring layer and is located between the first and second connection conductors. The first and second connection conductors are electrically continuous to the electrode pad and the solid conductor, respectively.

Abstract: A circuit board includes an insulating substrate having a first surface and a second surface opposite to the first surface, a solid conductor located inside the insulating substrate, a first via conductor connected to the solid conductor from a side of the first surface, and a second via conductor connected to the solid conductor from a side of the second surface. The solid conductor has a cutout that intersects a line segment that connects a node of the first via conductor and a node of the second via conductor to each other.

Abstract: An object of the invention is to provide an optical film product that is configured such that the direction of an optical axis can be easily recognized and that markings do not interfere with a defect inspection and to provide a method for producing such an optical film product. The invention is directed to an optical film product, including: an optical film layer having an optical axis; a surface protection film that is laminated on the optical film layer to protect the surface of the optical film layer; and an optical axis information part that shows information about the optical axis and is interposed between the optical film layer and the surface protection film.

Abstract: A thermoplastic elastomer composition for a powder material used for slush molding. The thermoplastic elastomer composition consists of a polypropylene resin and 20 to 500 parts by mass of a hydrogenated block copolymer per 100 parts by mass of the polypropylene resin. The hydrogenated block copolymer has a) at least one polymer block A with a primary component that is a vinyl aromatic hydrocarbon monomer unit and b) at least one polymer block B with a primary component that is a hydrogenated butadiene monomer unit. The polymer block B has a hydrogenation degree of at least 90%. The vinyl aromatic hydrocarbon in the hydrogenated block copolymer is present in an amount more than 5 mass % and less than 25 mass %. The polymer block B before hydrogenation contains 62 mol % or more 1, 2 bonds on average. The melt flow rate (MFR) of the thermoplastic elastomer composition is at least 10 g/10 min at 230° C. under a load of 2.16 kgf in accordance with Japanese Industrial Standards (JIS) K7210.

Abstract: A thermoplastic elastomer composition for a powder material used for slush molding. The thermoplastic elastomer composition consists of a polypropylene resin and 20 to 500 parts by mass of a hydrogenated block copolymer per 100 parts by mass of the polypropylene resin. The hydrogenated block copolymer has a) at least one polymer block A with a primary component that is a vinyl aromatic hydrocarbon monomer unit and b) at least one polymer block B with a primary component that is a hydrogenated butadiene monomer unit. The polymer block B has a hydrogenation degree of at least 90%. The vinyl aromatic hydrocarbon in the hydrogenated block copolymer is present in an amount more than 5 mass % and less than 25 mass %. The polymer block B before hydrogenation contains 62 mol % or more 1,2 bonds on average. The melt flow rate (MFR) of the thermoplastic elastomer composition is at least 10 g/10 min at 230° C. under a load of 2.16 kgf in accordance with Japanese Industrial Standards (JIS) K7210.

Abstract: A high frequency heating device includes a high frequency oscillator, a heating chamber for accommodating an object to be heated, and a cylindrical wave guide for coupling the high frequency oscillator to the heating chamber. The output antenna for the high frequency oscillator is disposed at an input end portion of the cylindrical wave guide and along the center axis of the wave guide. The heating chamber has a wall which is coupled to the cylindrical wave guide, the wall being positioned in an end plane of the cylindrical wave guide opposite to the output antenna. An arcuate slit is formed in the wall with the center of curvature of the slit being centered at the center axis of the cylindrical wave guide. This construction suppresses higher harmonics, and furthermore impedance matching and adjustment of the heating performance are facilitated.

Abstract: There is disclosed a power lawn mower which comprises a carriage having a top deck and side walls, a pair of front wheels, a pair of rear wheels having corresponding wheel axle shafts, a cutting mechanism having a rotary cutting element, a prime mover mounted on the top deck of the carriage and having an output shaft drivingly connected to the cutting element to rotate the same, and a rear wheel drive mechanism for transmitting driving power of the prime mover to the rear wheels and including at least one drive shaft. In this arrangement, the carriage includes front and rear openings. The front wheels are independently supported on the front portion of the carriage and the rear wheels are independently supported on the rear portion of the carriage. Further, front and rear guard members are swingably mounted to the lower surface of front and rear portions of the top deck, respectively.

Abstract: An electromagnetic energy seal for use in a microwave oven comprises a first sealing cavity formed along at least one of a peripheral edge portion of an entrance opening of a heating chamber and a portion of a door for opening and closing the entrance opening of the heating chamber which is opposite to the peripheral edge portion of the entrance opening of the heating chamber, and a second sealing cavity disposed in the opening of the first sealing cavity. These first and second sealing cavities have a simple structure which produces high shield effects against the fundamental microwave frequency and the higher harmonic microwave frequency components thereof, respectively, and the adjustment and optimization of the choking frequency characteristics of the cavities can be made easy.