Abstract: An optical disc apparatus including first to fourth disc guides. At the end of disc loading, the first one, in a fixed position, contacts a peripheral side face of the optical disc at a first point thereon to support the disc; the second one has a plane opposite to the peripheral side face which contacts the peripheral side face of the optical disc at a second point to support the disc while restrained from moving away from the side face; the third one contacts the peripheral side face of the optical disc at a third point to support the disc while biased by a spring; and the fourth one contacts the side face at a fourth point while biased by a spring to support the disc, and is restrained from moving against the resilience of the spring. The disc, supported by those disc guides, is chucked by a clamper.

Abstract: The invention provides a disc device capable of offering good SATA interface performance by optimizing the placement of the SATA connector relative to the control board, solving problems concerning noise or unnecessary radiation. A driver IC and DSP for executing main processing concerning disc recording or reproduction processing are installed in a main printed circuit board. A SATA connector having a power supply terminal and signal terminal is fixed to the main printed circuit board. The SATA connector is placed on the board opposite the DSP. Patterns each connecting the power supply terminal to the driver IC and connecting the signal terminal and DSP are formed on the board. The SATA connector and DSP are placed on the driver IC side relative to the central line of the board, the power supply terminal is placed on the driver IC side, and the signal terminal is placed on the DSP side.

Abstract: An optical disc apparatus, comprising a tray 2, attached to be insertable within housings 9 and 10, and within the housings are included a disc motor 3, an optical pickup 4 and a moving mechanism thereof, and also a unit mechanism chassis 5 for moving the optical pickup thereon and a controller substrate 71 disposed below the unit mechanism chassis for controlling the optical pickup, and further, a wide-width flexible cable 8 for electrical connection between the controller substrate and the optical pickup, wherein the optical pickup mounts laser units 41, 42 and 43 including three (3) pieces of elements, each emitting a laser light different in the wavelength thereof, a penetrating portion 2b and a wall portion 2e are provided in a part of left bottom surface of the tray, while forming a cutoff portion 55 in a part of the chassis, thereby guiding the airflow generated accompanying with rotation of the optical disc onto the optical pickup, with certainty.

Abstract: An optical disk device in which the thickness of the device is not increased, and interference between the bottom surface of an optical pickup unit (OPU) and a bottom case of the device is prevented upon emergency ejection of an optical disk without moving the optical pickup unit to an outermost peripheral position of the disk in the event of abnormality such as power shutdown during an operation in the optical disk device. A support mechanism having a coil spring is provided at shaft-holders in three of four positions of a guide main shaft and a guide sub shaft to support an OPU, to perform skew adjustment. In another position, a support mechanism having a plate spring is provided such that, upon emergency ejection, the interference between the bottom surface of the OPU and the bottom case is mitigated.

Abstract: An optical disc apparatus including first to fourth disc guides. At the end of disc loading, the first one, in a fixed position, contacts a peripheral side face of the optical disc at a first point thereon to support the disc; the second one has a plane opposite to the peripheral side face which contacts the peripheral side face of the optical disc at a second point to support the disc while restrained from moving away from the side face; the third one contacts the peripheral side face of the optical disc at a third point to support the disc while biased by a spring; and the fourth one contacts the side face at a fourth point while biased by a spring to support the disc, and is restrained from moving against the resilience of the spring. The disc, supported by those disc guides, is chucked by a clamper.

Abstract: The invention provides an optical disc device conducting highly accurate skew adjustment, avoiding an increase in the number of components, and achieving downsizing. This optical disc device includes: a guide shaft for supporting an optical pickup and guiding its movement; a chassis the guide shaft is attached to; a coil spring attached to the chassis for applying force to an end of the guide shaft; an adjustment screw for adjusting the force applied by the coil spring, provided opposite the coil spring with respect to the guide shaft; and a weight addition member attached to the chassis, wherein internal threads for engaging with the adjustment screw are formed in the weight addition member, and the axis of the adjustment screw engaged with the internal thread, the center of a cross section of the guide shaft perpendicular to its axis, and the axis of the coil spring are aligned along the same line.

Abstract: The invention provides a disc device capable of offering good SATA interface performance by optimizing the placement of the SATA connector relative to the control board, solving problems concerning noise or unnecessary radiation. A driver IC and DSP for executing main processing concerning disc recording or reproduction processing are installed in a main printed circuit board. A SATA connector having a power supply terminal and signal terminal is fixed to the main printed circuit board. The SATA connector is placed on the board opposite the DSP. Patterns each connecting the power supply terminal to the driver IC and connecting the signal terminal and DSP are formed on the board. The SATA connector and DSP are placed on the driver IC side relative to the central line of the board, the power supply terminal is placed on the driver IC side, and the signal terminal is placed on the DSP side.

Abstract: An optical disc apparatus, comprising a tray 2, attached to be insertable within housings 9 and 10, and within the housings are included a disc motor 3, an optical pickup 4 and a moving mechanism thereof, and also a unit mechanism chassis 5 for moving the optical pickup thereon and a controller substrate 71 disposed below the unit mechanism chassis for controlling the optical pickup, and further, a wide-width flexible cable 8 for electrical connection between the controller substrate and the optical pickup, wherein the optical pickup mounts laser units 41, 42 and 43 including three (3) pieces of elements, each emitting a laser light different in the wavelength thereof, a penetrating portion 2b and a wall portion 2e are provided in a part of left bottom surface of the tray, while forming a cutoff portion 55 in a part of the chassis, thereby guiding the airflow generated accompanying with rotation of the optical disc onto the optical pickup, with certainty.

Abstract: A flexible printed-wiring circuit board that connects a signal-processing circuit board and a pickup is prevented from coming into contact with the bottom (or the like) of a tray and thus becoming damaged. The flexible printed-wiring circuit board (FPC board) is disposed in a U-shaped folded state in a space sandwiched between a surface along which the tray moves, and a surface on which the signal-processing circuit board is mounted. An extension portion that restricts deformation of the FPC board toward the tray is provided at a connecting end of the pickup. Length D of the extension portion is set such that length S of the FPC board from a front end of the extension portion to a fold-back position of the FPC board is equal to or less than a required value.

Abstract: In a disc drive for achieving cooling of an electronic part therein, as well as, suppressing transmission of noises generated from a disc clamper, etc., a channel member 18 for introducing an outside air into an inside is disposed between a supporting member 15 and a top-cover 10, within an inside thereof is formed a vortex-like channel, extending from a center to an outer periphery thereof. At the center of the channel member 18 is formed an opening 19 for introducing the outside air into the inside of the disc drive, and on the top-cover 10 are provided plural numbers of openings 20 for taking the outside air into the channel member 18. When an optical disc 6 rotates, pressure generated on an upper surface thereof comes to be negative to the outside air, then the outside air is taken from the openings 20, through the vortex-like channel of the channel member 18 and the opening 19, into the inside of the drive, so as to pass through electronic parts, such as, an optical pickup, etc., thereby cooling them.

Abstract: An optical disc apparatus is constructed so that: a first member formed of a plate-shaped or sheet-shaped insulating material is disposed on a flexible printed-wiring board which interconnects a main circuit board and an optical pickup; a second member with a protruding portion is disposed at both sides of the wiring section of the flexible printed-wiring board, on the first member; the protrusions are coupled with a main circuit board by, for example, being inserted into the holes of a planar region on the main circuit board; and the second member presses the flexible printed-wiring board against the main circuit board from one side of the wiring board via the first member, thus fixing the wiring board.

Abstract: Guide members for guiding an optical pickup for movement in directions parallel to a diameter of an optical disk relative to the optical disk are formed of a metal, support members supporting the guide members on a chassis are formed of a resin, and heat transfer members formed of a metal are set in contact with the guide members and the chassis to achieve both the dissipation of heat generated by the optical pickup and the isolation of the optical pickup from vibrations. The guide support members attenuate vibrations propagating from the chassis toward the optical pickup, and heat generated by the optical pickup is dissipated through the heat transfer members into the chassis.

Abstract: An optical disc apparatus is constructed so that: a first member formed of a plate-shaped or sheet-shaped insulating material is disposed on a flexible printed-wiring board which interconnects a main circuit board and an optical pickup; a second member with a protruding portion is disposed at both sides of the wiring section of the flexible printed-wiring board, on the first member; the protrusions are coupled with a main circuit board by, for example, being inserted into the holes of a planar region on the main circuit board; and the second member presses the flexible printed-wiring board against the main circuit board from one side of the wiring board via the first member, thus fixing the wiring board.

Abstract: In an optical disk apparatus, a rack member includes: a first section formed with a protrusion-shaped engaging portion which engages with the feed screw of a lead screw member; a second section coupled with the base side of an optical pickup; and a third section integrally coupled with the first section and the second section, between both of these sections, and supporting the first section in a double-end-supporting state with respect to the second section, in a plane such as a rotational plane of the lead screw member. This construction enables smooth movement of the rack member in an optical pickup feed mechanism.

Abstract: Guide members for guiding an optical pickup for movement in directions parallel to a diameter of an optical disk relative to the optical disk are formed of a metal, support members supporting the guide members on a chassis are formed of a resin, and heat transfer members formed of a metal are set in contact with the guide members and the chassis to achieve both the dissipation of heat generated by the optical pickup and the isolation of the optical pickup from vibrations. The guide support members attenuate vibrations propagating from the chassis toward the optical pickup, and heat generated by the optical pickup is dissipated through the heat transfer members into the chassis.