Patent ID: 8553354

Claim:
A disk driving apparatus comprising a head unit configured to perform at least one from among a data readout operation and a data writing operation for a recording disk, the disk driving apparatus further comprising: a base member; a rotor unit on which the recording disk is to be mounted; and a fluid bearing unit configured to support the rotor unit such that the rotor unit can be rotated relative to the base member, and configured such that a gas-liquid interface of a lubricant fluid with which a bearing portion of the bearing unit is filled communicates with the surface side of the bearing unit, wherein the base member comprises: a head movement region in which the head unit is to be mounted such that a head portion of the head unit can be moved in a reciprocating manner along the radial direction of a recording face with the head portion facing the recording face of the recording disk to be mounted on the rotor unit; and a recessed housing portion configured to house the fluid bearing unit such that it surrounds at least a part of the rotor unit supported by the fluid bearing unit, and wherein an inhibiting wall is formed at a boundary between the head movement region and the recessed housing portion so as to prevent the lubricant fluid from migrating toward the recording disk to be mounted on the rotor unit.