Patent ID: 6930850

Claim:
A head clamping apparatus for a magnetic disk tester which tests electromagnetic transducing characteristics of at least one of a magnetic disk and magnetic head, the head clamping apparatus rotating the magnetic disk having a plurality of concentric tracks and positioning the magnetic head onto a target one of the concentric tracks, and the head clamping apparatus comprising: a microstage supporting the magnetic head and being moved by a microactuator in a direction crossing the concentric tracks; wherein the microstage has a base attached to the head clamping apparatus, a stage to hold the magnetic head through a head attachment, and two resilient pieces connecting the base to the stage, the base, the stage, and the resilient pieces forming a parallel plate spring mechanism; the base has a support protruding toward the stage between the resilient pieces; and the microactuator is arranged between the support and one of the resilient pieces.