Removal of Contaminants from a Head Disk Assembly
Original Publication Date: 1982-Apr-01
Included in the Prior Art Database: 2005-Feb-09
In order to minimize air intake and to restrict the flow of contaminants from actuators 1 and 2 into a head/disk assembly 3, a seal plate 4 is used to increase pressure adjacent to head arm assemblies 5 and 6. During operation. filtered air enters a common plenum chamber and flows into the head/disk assembly 3. The seal plate, which is on the downstream side of the head arms, causes a stagnation region to form, thereby increasing the pressure around the arms. The air pressure is raised above the static pressure in the area of the actuators, so that the air flow is reversed. In this way, contaminants are not drawn into the disk area.