Patent ID: 7554762

Claim:
A recording disk drive comprising: a recording disk configured to rotate around a rotation axis; a first shroud surface configured to extend along an imaginary cylinder defined coaxial to the recording disk, said first shroud surface opposed to an outward peripheral surface of the recording disk at a constant interval, said first shroud surface located upstream of a head actuator along a direction of rotation of the recording disk; a second shroud surface configured to extend along an imaginary cylinder defined coaxial to the recording disk, said second shroud surface opposed to the outward peripheral surface of the recording disk at a constant interval at a position downstream of the first shroud surface along a direction of rotation of the recording disk, said second shroud surface located upstream of a head actuator along a direction of rotation of the recording disk; an inflow opening defined between the first and second shroud surfaces; a rectifier plate configured to extend from the second shroud surface, said rectifier plate opposed to a surface of the recording disk at a certain interval; a shroud plate located within the inflow opening, said shroud plate opposed to the outward peripheral surface at a constant interval, said shroud plate extending along an imaginary plane perpendicular to the rotation axis of the recording disk; and a dust catcher located on an airflow passage extending from the inflow opening.