Hitachi-lg Data Storage, Inc.

Yoichi Narui

Ikuo Nishida

Masahiro Matsuo

Kenji Watabe

Kohei Takita

Hisahiro Miki

Takayuki Fujimoto

Yoshiyuki Tanaka

Goshi Shiroishi

Hironori Saito

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.

Optical disc apparatus

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.

Disc device

An optical disc apparatus, comprising a tray, attached to be insertable within housingsand, and within the housings are included a disc motor, an optical pickupand a moving mechanism thereof, and also a unit mechanism chassisfor moving the optical pickup thereon and a controller substratedisposed below the unit mechanism chassis for controlling the optical pickup, and further, a wide-width flexible cablefor electrical connection between the controller substrate and the optical pickup, wherein the optical pickup mounts laser unitsandincluding three (3) pieces of elements, each emitting a laser light different in the wavelength thereof, a penetrating portionand a wall portionare provided in a part of left bottom surface of the tray, while forming a cutoff portionin a part of the chassis, thereby guiding the airflow generated accompanying with rotation of the optical disc onto the optical pickup, with certainty.

Optical disc apparatus including airflow cooling mechanism

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.

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.

Growing community of inventors

Matsudo, Japan

Yoichi Narui