Patent ID: 7595952

Claim:
A magnetic head evaluation apparatus, comprising: a magnetic disk for recording thereon information as a signal; a mechanism for rotatably driving the magnetic disk; a magnetic head for writing/reading a signal to/from the magnetic disk; a head gimbal assembly (HGA) for supporting the magnetic head above the magnetic disk; and a mechanism for driving the HGA; wherein a spindle motor used in a product hard disk drive (HDD) is used as the mechanism for rotatably driving the magnetic disk; wherein a voice coil motor (VCM) actuator used in the product HDD is used as the mechanism for driving the HGA; and wherein a non-contact type position detector is used as a mechanism for detecting a position of the magnetic head above the magnetic disk; wherein the VCM actuator includes a load beam and spring having a first end fixed to the bottom of the load beam; and wherein the HGA is mounted to the load beam using a second end of the spring that presses up against a caulking hole of a mount plate of the HGA.