Patent ID: 6888696

Claim:
A magnetic head apparatus comprising: a magnetic disk for storing thereinto information; a head equipped with a recording conversion element for writing information into the magnetic disk and a reproducing conversion element for reading information from the magnetic disk; an actuator arranged by a suspension for supporting the head so as to move the head on the magnetic disk, and also a drive apparatus for driving the suspension; and a stopper for limiting a movable range of the actuator; wherein; the stopper is formed by an elastic member; an elastic deformation amount of the stopper is changed by changing force of driving the actuator under such a condition that the actuator is depressed against the stopper in order that the position of said head is adjusted, and a positional dependent characteristic along a radial direction of the magnetic disk as to a reproduction output of the head is measured; and a relationship between a magnitude of drive force capable of depressing the actuator against the stopper and a position of the head along a width direction thereof is defined by that a variation of gradients is limited to 10% within a range of two tracks of the magnetic disk.