Magnetic Disk With Structured Start/Stop (S/S) Track
Original Publication Date: 1985-Mar-01
Included in the Prior Art Database: 2005-Feb-18
During the operation of a magnetic disk storage system, the magnetic heads, used for reading and writing, start from and stop on the magnetic disk. In the start/stop phase, head and disk are in close contact, leading to wear and, after some time, to head crash (an irreversible destruction of the head/disk interface). By using a groove-shaped structure for the S/S track, similar to a helical groove bearing, the start of the magnetic head from the disk is accelerated, without increasing the flight height. In that manner, the critical phase in which the head contacts the disk is reduced. In addition, lubricant depletion of the S/S track is prevented by the pumping effect of the grooves, thus increasing the service life of the entire system. Fig.