Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).

Abstract: A high performance sealing device having an excellent pressure resistance and realizing a prevention of damage. The sealing device usable at a working pressure of 0 to 2 MPa, and not damaged. even if the pressure of high-pressure fuel of 5 MPa or higher is applied thereto, wherein high pressure fuel on the high pressure side H is sealed by a first seal part 2, oil from a cam side on a low pressure side L is sealed by a second seal part 3, and the fuel slightly leaked due to failure of scraping at the first seal part is sealed by the second seal part to form a dual seal structure, and a resin ring 21 coming into slidable sealing contact with a shaft 10 is used in the first seal part 2, whereby abnormal abrasion does not occur even when fuel having less lubricity is used, and the durability of the seal is increased.

Abstract: According one embodiment, after receiving, as a received bit sequence, an information bit sequence which has been encoded for an error correction in the form of connecting an error correcting code to the outside of an LDPC code, the received bit sequence is subjected to the LDPC decoding, and then subjected to an error correction corresponding to the error correcting code. When the error correction corresponding to the error correcting code is impossible, a bit with low reliability is detected from the received bit sequence subjected to the LDPC decoding, and the bit is inverted, and then the received bit sequence with the inverted bit is subjected to an error correction corresponding to the error correcting code.

Abstract: There is provided an apparatus which obtains a circumstance where LDPC codes are interleaved without damaging modulation rules and thereby a correction ability of LDPC encoding and decoding method is fully exhibited. The apparatus includes an RLL rule applying section which modulates user data by applying an RLL rule to the user data and thereby obtains RLL encoded sequence data, an interleave section which interleaves the RLL encoded sequence data and thereby obtains interleaved sequence data, an LDPC parity generating section which subjects the interleaved sequence data to LDPC encoding processing and thereby obtains LDPC parity sequence data, an inserting section which inserts parity of the LDPC parity sequence data in the RLL encoded sequence data in a distribution manner and thereby obtains output data, and an output section which records or transmits the output data.

Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).

Abstract: A high performance sealing device having an excellent pressure resistance and realizing a prevention of damage. The sealing device usable at a working pressure of 0 to 2 MPa, and not damaged even if the pressure of high-pressure fuel of 5 MPa or higher is applied thereto, wherein high pressure fuel on the high pressure side H is sealed by a first seal part 2, oil from a cam side on a low pressure side L is sealed by a second seal part 3, and the fuel slightly leaked due to failure of scraping at the first seal part is sealed by the second seal part to form a dual seal structure, and a resin ring 21 coming into slidable sealing contact with a shaft 10 is used in the first seal part 2, whereby abnormal abrasion does not occur even when fuel having less lubricity is used, and the durability of the seal is increased.

Abstract: A high performance sealing device having an excellent pressure resistance and realizing a prevention of damage. The sealing device usable at a working pressure of 0 to 2 MPa, and not damaged even if the pressure of high-pressure fuel of 5 MPa or higher is applied thereto, wherein high pressure fuel on the high pressure side H is sealed by a first seal part 2, oil from a cam side on a low pressure side L is sealed by a second seal part 3, and the fuel slightly leaked due to failure of scraping at the first seal part is sealed by the second seal part to form a dual seal structure, and a resin ring 21 coming into slidable sealing contact with a shaft 10 is used in the first seal part 2, whereby abnormal abrasion does not occur even when fuel having less lubricity is used, and the durability of the seal is increased.

Abstract: A high performance sealing device (1) having an excellent pressure resistance, usable at a working pressure of 0 to 2 MPa, and not damaged even if the pressure of high-pressure fuel of 5 MPa or higher is applied thereto, wherein high pressure fuel on the high pressure side (H) is sealed by a first seal part (2), oil from a cam side on a low pressure side (L) is sealed by a second seal part (3), and the fuel slightly leaked through the first seal part (2) is sealed by the second seal part (3) to form a double seal structure, and a resin ring (21) slidably and sealingly coming into contact with a shaft (10) is used in the first seal part (2), whereby abnormal wear does not occur even if fuel with poor lubrication is used, and the durability of the seal is increased.

Abstract: In a resinous circuit board having a circuitized substrate having conductive layers therewithin, a plurality of pin pads formed on a rear surface of the substrate, and a plurality of pins, each pin having a tip end portion and a head portion and soldered to the pin pad in such a manner as to contact at the head portion to the pin pad. The head portion of the pin consists of a flange section which is larger in diameter than the tip end portion, and a part-spherical abutment section bulging from the flange section in the direction opposite to the tip end portion and brought into contact with the pin pad. The part-spherical abutment section is made of eutectic silver solder which is lower in melting point than solder such as Sn—Ag solder which is used for soldering the pin to the pin pad. Since the silver solder and soft solder are present between the flange section and the pin pad, they can release the stress applied to the pin, thus making it possible to increase the joining strength considerably.

Abstract: The present invention provides a water-dilutive and conductive coating composition capable of preparing any desired color tone which, upon applying to a thing to be coated, affords various beautiful color tones, gives electroconductivity and prevents static electricity and particularly offers a composition capable of preparing any desired color which can be effectively used in a place where the use of organic solvents and chemical contamination are strictly restricted such as factories for the manufacture of semiconductors. The invention provides a water-dilutive and conductive coating composition whereby any desired color can be afforded, characterized in that, said composition contains 10-50% by weight of water-soluble or water-dispersible synthetic resin (non-volatile content) and 5-40% by weight of white electroconductive pigment and the amount of each of sodium and potassium, in the resulting coated film is not more than 30 ppm.