Patent ID: 7110223

Claim:
A magnetic disk apparatus comprising: a magnetic disk; a magnetic head; a slider on which the magnetic head is mounted; a suspension for applying a predetermined load to the slider; a carriage arm to which the suspension is attached, the slider being supported by the suspension and the carriage arm over the magnetic disk, wherein the carriage arm is rotationally driven around a rotation axis provided at an end of the carriage arm which end is opposite to an end thereof to which the suspension is attached, so that the magnetic head is located in a target track on the magnetic disk for reading/writing information; first and second arms arranged side-by-side in a parallel direction to a disk surface between the end of the carriage arm on a side to which the suspension is attached, and the end on a rotational axis side; and a member comprising a viscoelastic body, which member is provided between the first and second arms; wherein the member comprises a portion having a rigidity which is higher than a rigidity of the viscoelastic body, the viscoelastic body being provided at both ends of the higher rigidity portion, and attached to the first and second arms, respectively.