Patent ID: 6594107
Filing Date: 2003-07-15
Classification: G11B

Abstract:
A magnetic disc apparatus comprising:a magnetic disk; a spindle motor that rotationally drives the magnetic disk; a magnetic head that records and reproduces information on the magnetic disk; a carriage having the magnetic head at its tip; a voice coil motor (VCM) that drives the carriage; a signal processing circuit that processes signals from the magnetic head; a case on which these components are mounted; an electrical wiring that interconnects the magnetic head and the signal processing circuit, and/or interconnects the signal processing circuits and is unitary with the case; and an interface connecting part that transmits signals that were processed by the signal processing circuit to the outside and is unitary with the case and comprises a data transmission connecting part, a ground connecting part, and a power connecting part, in which the ground connecting part and the power connecting part having electrical wiring that is plated onto the outer bottom surface of the case and conductive through-holes of the case.