Abstract: To provide a reliable optical pickup device, a pickup case and an optical component including a lens are fixed by laser welding to increase the welding strength and reduce the positional displacement due to environmental changes. In a laser welded portion between a pickup case and an optical component including a lens, the optical component is provided with a joint portion having a convex protrusion at a portion to be joined to the pickup case. Laser beam irradiation is performed extending longer than the protrusion to form a thick welded portion at an end of the protrusion, in order to increase welding strength between the optical component and the pickup case.

Abstract: In laser welding an optical part to a pickup case of an optical pickup device, outgas deposition on a lens surface can be inhibited, and positional shifting of the optical part can be reduced. The optical part has a lens surface facing in an optical axis direction and a protruding part formed, to be joined to the pickup case, at an end portion thereof in a direction perpendicular to the optical axis. A joint surface between the protruding part and the pickup case extends in a direction parallel to the optical axis, and the joint surface is fixed by a weld portion formed by laser irradiation. The joint surface is parallel to a bottom surface of the pickup case, and the height from the bottom surface is approximately equal to the height of the center of the lens surface.

Abstract: In a laser welding method, detachment is suppressed and dislocation of an optical component is reduced by improving adhesiveness of an interface of a welded part to thereby improve yield and reliability of an optical pickup device. A manufacturing method of an optical pickup device includes: a step of bringing the optical component into contact with the holding member; a step of irradiating laser light; and a step of melting the holding member through the irradiation to weld the holding member to the optical component, wherein before the laser light is irradiated, surface roughness of a portion of the optical component to be welded is greater than surface roughness of the holding member in contact with the portion, whereby the melted holding member enters into an uneven part on a front surface of the optical component, improving adhesion strength.

Abstract: The present invention provides an optical pickup device employing a disc protector that includes a plurality of first protrusions and at least one second protrusion disposed on the lens holder, wherein the first protrusions are formed by applying a first adhesive to a plurality of areas of a top surface of the lens holder, wherein the first protrusions are arranged at different locations in the tracking direction such that the objective lens is sandwiched between the first protrusions, wherein the at least one second protrusion protrudes is formed by applying a second adhesive to at least one area of the top surface of the lens holder, and wherein tips of the first protrusions are closer to the optical disc than a tip of the at least one second protrusion.

Abstract: The present invention provides an optical head for realizing the stable operation by controlling the temperature of the semiconductor laser to a low level by reducing the heat transfer rate from a laser driver IC to a housing in the vicinity of a semiconductor laser, and an optical disc drive using the same. It provides an optical head having a semiconductor laser and a photo detector arranged on one side with respect to a straight line through the center of an object lens of an object lens actuator and in parallel to the axis contacted with bearings, and a laser driver IC arranged on the other side with respect to the straight line. Thereby, the distance from the laser driver IC to the semiconductor laser can sufficiently be ensured so that the heat transfer rate from the laser driver IC to the housing can be reduced.

Abstract: To provide a reliable optical pickup device, a pickup case and an optical component including a lens are fixed by laser welding to increase the welding strength and reduce the positional displacement due to environmental changes. In a laser welded portion between a pickup case and an optical component including a lens, the optical component is provided with a joint portion having a convex protrusion at a portion to be joined to the pickup case. Laser beam irradiation is performed extending longer than the protrusion to form a thick welded portion at an end of the protrusion, in order to increase welding strength between the optical component and the pickup case.

Abstract: In laser welding an optical part to a pickup case of an optical pickup device, outgas deposition on a lens surface can be inhibited, and positional shifting of the optical part can be reduced. The optical part has a lens surface facing in an optical axis direction and a protruding part formed, to be joined to the pickup case, at an end portion thereof in a direction perpendicular to the optical axis. A joint surface between the protruding part and the pickup case extends in a direction parallel to the optical axis, and the joint surface is fixed by a weld portion formed by laser irradiation. The joint surface is parallel to a bottom surface of the pickup case, and the height from the bottom surface is approximately equal to the height of the center of the lens surface.

Abstract: In order to improve reliability of an optical disk drive apparatus at low cost, a flexible substrate for making connection between an optical pick-up device incorporated in the optical disk drive apparatus and a drive side is divided into a first flexible substrate fixed to the optical pick-up body (for example, upper surface), and a second flexible substrate connected to the first flexible substrate and extending to the drive, wiring conductors formed on a connection end portion of the first flexible substrate and wiring conductors formed on a connection end portion of the second flexible substrate are superposed at a region adjacent an end of the case of the optical pick-up device body, and connected to each other by joining material, and a connection section between the wiring conductors is held down by a cover for protecting the optical pick-up device body.

Abstract: The present invention provides an optical head for realizing the stable operation by controlling the temperature of the semiconductor laser to a low level by reducing the heat transfer rate from a laser driver IC to a housing in the vicinity of a semiconductor laser, and an optical disc drive using the same. It provides an optical head having a semiconductor laser and a photo detector arranged on one side with respect to a straight line through the center of an object lens of an object lens actuator and in parallel to the axis contacted with bearings, and a laser driver IC arranged on the other side with respect to the straight line. Thereby, the distance from the laser driver IC to the semiconductor laser can sufficiently be ensured so that the heat transfer rate from the laser driver IC to the housing can be reduced.

Abstract: The present invention provides an optical pickup device employing a disc protector that includes a plurality of first protrusions and at least one second protrusion disposed on the lens holder, wherein the first protrusions are formed by applying a first adhesive to a plurality of areas of a top surface of the lens holder, wherein the first protrusions are arranged at different locations in the tracking direction such that the objective lens is sandwiched between the first protrusions, wherein the at least one second protrusion protrudes is formed by applying a second adhesive to at least one area of the top surface of the lens holder, and wherein tips of the first protrusions are closer to the optical disc than a tip of the at least one second protrusion.

Abstract: In a joint of a first flexible printed circuit board (FPC board) dividedly manufactured and fixed to an optical pickup device main body and a second FPC board dividedly manufactured and inserted into a drive side connector in an optical pickup drive apparatus, the present invention is characterized in that an end face of a base film of at least one of the FPC boards extends outward from an end face of wiring conductor. In solder bonding of a first FPC board to a second FPC board, the present invention is characterized by having a solder dam formed at a leading end of wiring of the first FPC board so as to ensure a predetermined amount of solder for re-joint when the second FPC board is removed from the first FPC board and by narrowing an end of wiring of the second FPC board.

Abstract: Poly(L-lactic acid) (200,000 in weight average molecular weight and 175° C. in melting point) is melt-spun at 200° C. and drawn to obtain a single filament having a diameter of 0.05 mm. Two lengths of the filament are twisted to prepare a filamentous substance, which is cut to a length of 7 cm to obtain a vasoocclusive article 1 in the form of a single line. The occlusive article is free of the problems conventionally experienced.

Abstract: In order to improve reliability of an optical disk drive apparatus at low cost, a flexible substrate for making connection between an optical pick-up device incorporated in the optical disk drive apparatus and a drive side is divided into a first flexible substrate fixed to the optical pick-up body (for example, upper surface), and a second flexible substrate connected to the first flexible substrate and extending to the drive, wiring conductors formed on a connection end portion of the first flexible substrate and wiring conductors formed on a connection end portion of the second flexible substrate are superposed at a region adjacent an end of the case of the optical pick-up device body, and connected to each other by joining material, and a connection section between the wiring conductors is held down by a cover for protecting the optical pick-up device body.

Abstract: Poly(L-lactic acid) was melt-spun at 200° C. and drawn to obtain a hollow monofilament 0.15 mm in outside diameter and 0.12 mm in inside diameter. The monofilament was cut to a length of 8 cm. Each of opposite ends of the cut piece was wound around a stainless steel mandrel, 1 mm in diameter, one-half turn, held in J-shaped curl, heat-treated at 150° C. and then cooled. In this way, a bioabsorbable vasoocclusive coil 3 of the invention was prepared which had a J-shaped curved portion 1 at each of opposite ends thereof and a hollow portion 2 over the entire length thereof. The hollow portion can be filled with a drug such as carcinostatic or antitumor agent, permitting the drug to exhibit a sustained release effect. When the follow portion is filled with an X-ray contrast mediums the coil can be delivered to a desired intravascular site reliably, while the process of treatment can be observed more reliably.

Abstract: In a disc driving apparatus, wherein a laser diode and a laser driver circuit board are mounted on a pickup housing in thermal contact therewith and are disposed adjacent to each other, a heat separation member is provided between the laser diode and the laser driver circuit board for effecting thermal separation therebetween, thereby reducing the thermal interference between the heat-generating elements that are adjacent to each other in the optical pickup. This makes it possible to protect the heat-generating elements from being deteriorated, leading to a reduction in the lifetime thereof, as well as, to improve the reliability thereof.

Abstract: In a disc driving apparatus, wherein a laser diode 27 and a laser driver circuit board 29 are mounted on a pickup housing 24, being connected with thermally and disposed adjacent with each other, and a heat separation member 25 is provided between the laser diode 27 and the laser driver circuit board 29 for thermal separation therebetween, thereby reducing the thermal interference between the heat-generating elements disposed to be adjacent in the optical pickup, so as to protect the heat-generating elements from being deteriorated on lifetime thereof, as well as, improve the reliability thereof.

Abstract: To provide an objective lens driving device that drives an objective lens for converging light on a recording surface of an optical disk, not only in a focusing and a tracking directions but also in an inclining direction of an optical axis of the objective lens, four support members are fixed to outer edge portions of a lens holder, and positions where the other support members are fixed to at least one of the lens holder and a fixing section are located inside the four support members fixed to the outer edge portions of the lens holder.

Abstract: To provide an objective lens driving device that drives an objective lens for converging light on a recording surface of an optical disk, not only in a focusing and a tracking directions but also in an inclining direction of an optical axis of the objective lens, four support members are fixed to outer edge portions of a lens holder, and positions where the other support members are fixed to at least one of the lens holder and a fixing section are located inside the four support members fixed to the outer edge portions of the lens holder.

Abstract: The label printer comprises at least two printing units and a control unit. Each printing unit can print a specific label under the control of the control unit. The label is printed with information concerning a commodity, such as a price and a weight of the commodity. One or two printed labels are attached at predetermined positions on the commodity. Further, the two printing units can be moved so that each printing unit can attach each printed label on the commodity.

Abstract: A disk loading and unloading system (5) including a disk holding section (10, 11, 15, 16, 23) mounted for pivotal movement with respect to a main body of the system. When the disk holding section is pivotally moved outwardly away from the main body, the disk holding section moves to an upper position in which at least a portion of a disk (6) supported in the disk holding section clears the disk holding section and is exposed to view. Thus the disk can be removed from the disk holding section by holding its side edge by hand.