Landing Of Magnetic Heads On Disks
Original Publication Date: 1979-Apr-01
Included in the Prior Art Database: 2005-Feb-20
In disk files which employ accessing magnetic heads that start and stop in contact with the magnetic disk, problems arise due to frictional and thermal effects that adversely affect the life of the magnetic heads and disks. To minimize these problems, a spiral take-off and landing pattern is employed, which is effectuated by moving the head radially relative to the disk during starts and stops. Therefore, the start-stop paths are used in a random pattern so that the heads start and stop in contact along different areas of the disk surface. As a result, the head/disk interface life is improved. Also, there is no need for dedicated tracks on the disk surface for heads to start and stop in contact, allowing an increase in the number of data tracks.