Patent ID: 6798605
Filing Date: 2004-09-28
Classification: G11B

Abstract:
A magnetic disk apparatus comprising a rotation mechanism provided within an apparatus main body for driving more than one magnetic disk to rotate, a magnetic head slider movably provided in a radial direction of said magnetic disk for being floated by an air bearing adjacent to a surface of said magnetic disk with a specified distance therefrom, a record/reproduction element provided at a distal end of said magnetic head slider for recording and reproducing magnetic information on and from said magnetic disk, drive means for changing a distance between said record/reproduction element and said magnetic disk, and means for supporting said magnetic head slider and for performing position determination of said magnetic head slider in the radial direction of said magnetic disk, whereinsaid apparatus further comprises proper shift amount estimation means for causing said drive means to gradually reduce a distance between said record/reproduction element and said magnetic disk; detecting contact between said record/reproduction element and said magnetic disk; shifting said record/reproduction element in position by a fixed amount thereby letting the distance increase accordingly; and storing a resultant shift amount in a memory as a proper shift amount of the head.