Disk driving apparatus having improved quality

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,
• and wherein a gap along a rotational axis direction defined by an upper face of the inhibiting wall and the recording face of the recording disk that faces the upper face of the inhibiting wall is set to a distance of at least 0.5 mm and at most 1.5 mm.

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,
• and wherein the inhibiting wall is monolithically formed together with the base member formed of at least one of a die-casting aluminum alloy, an iron plate, and an aluminum plate.