Patent ID: 7027248

Claim:
A magnetic disk apparatus comprising: a magnetic disk holding data by magnetic information in tracks on a magnetic recording film; a magnetic head with a slider having a heat element to locally heat said magnetic disk, a write element to apply a magnetic field modulated by an electric signal to an area of said magnetic disk heated by the heat element, and a read element to convert the magnetic information on said magnetic disk into an electric signal, wherein the write element maintains a static position with respect to a body of the slider, and wherein the heat element and the write element are mutually differing components from one another and are distanced from one another on the slider; an actuator to move said magnetic head along a circular-arc in a radial direction of the magnetic disk; and a realigning mechanism that moves a position of the area heated by said heat element in a width direction of said slider, to dynamically realign the area heated onto a same track as the write element.