Patent ID: 7835114

Claim:
A disc drive apparatus comprising: a spindle motor; a disc which is rotated by the spindle motor; a base which contains the disc and includes a pivot position, the base having a first vibration mode, a low-frequency second vibration mode in which a frequency is higher than in the first vibration mode, and a high-frequency second vibration mode in which a frequency is higher than in the low-frequency second vibration mode with respect to frequency response characteristics, wherein the base is configured such that a phase of the pivot position is inverted between the low-frequency second vibration mode and the high-frequency second vibration mode; a pivot located at the pivot position on the base; and a carriage which has an arm and is rotatable about the pivot, the arm of the carriage being configured to have a first bending mode in a frequency domain between a peak of the low-frequency second vibration mode and a peak of the high-frequency second vibration mode.