Hitachi Global Storage Technologies Netherlands B.v.

Motoji Takemoto

Hitoshi Tsujino

Tomoki Hiramatsu

Kohji Serizawa

Hirokazu Tanizawa

Tetsuo Yuki

Tatsuo Sekimoto

Embodiments of the invention provide a disk device capable of diminishing oscillation of a disk caused by an air flow which is created with rotation of the disk. In one embodiment, a magnetic disk device comprises a rotatable magnetic disk, a base and a top cover for housing the magnetic disk inside, a flow uniforming wall disposed along an outer periphery of the magnetic disk, and a circulation filter for collecting dust present within the device. The flow uniforming wall is positioned in opposition to the outer periphery of the magnetic disk and has a step height at a position other than the position opposed to the disk outer periphery, with an opening being formed by a gap between the step height and the top cover. This opening serves as an inlet port to admit an air flow created with rotation of the magnetic disk, and the circulation filter collects dust contained in the admitted air flow.

Disk device with reduced flutter

A flexible printed circuit board using a lead-free solder is to be fixed within a disk enclosure while ensuring a high rigidity. In one embodiment, a rotating disk storage device comprises a flexible printed circuit board (FPC), wherein there is formed a wiring pattern including a signal line for the transmission of a signal of data read by a head in an actuator head suspension assembly (AHSA) and wherein one side end portion is fixed to a base and an opposite side end portion is fixed to the AHSA. A first metallic plate and a second metallic plate are both fixed to one side end portion of the FPC. A connector is disposed in an area where the first metallic plate in the FPC is provided, and connected to the wiring pattern. A shock sensor is disposed in an area where the second metallic plate in the FPC is provided, and connected to the wiring pattern. A reinforcing plate of a synthetic resin is, in an opposed state of the first and second metallic plates fixed to one side end portion of the FPC, held between the opposed faces of both metallic plates and is fixed to the base together with both metallic plates.

Rotating disk storage device with high rigidity flexible printed circuit board

Growing community of inventors

Kanagawa, Japan

Motoji Takemoto