Patent ID: 7385777
Filing Date: 2008-06-10
Classification: G11B

Abstract:
1. A data storage device comprising: a slider which flies above a rotating medium; a head element located at the slider; a controller which performs seek operation of the head element to seek a target track; and a heater which is located at the slider, said heater being kept in an OFF state from the start of the seek operation until the specified timing before the head element accesses a data area of the medium, said heater being kept in an ON state from said specified timing until the head element accesses the data area so that the head element protrudes by thermal expansion to adjust a clearance between the head element and the rotating medium, wherein a value of an electric current supplied to the heater in the ON state from said specified timing is larger than or equal to a value of an electric current supplied to the heater while the head element reads out data from the data area.