Patent ID: 7291855
Filing Date: 2007-11-06
Classification: G11B

Abstract:
1. A medium transport apparatus which moves a hold unit for a transported medium along an arm unit one side of which is supported, holds the transported medium contained in a media storage cell by the hold unit, and performs insertion and withdrawal, and transportation of the transported medium, comprising: a pattern reading unit reading a pattern given to the media storage cell and in which a line is drawn horizontally using a sensor provided in the hold unit; a deflection amount calculating unit measuring a deviation of the horizontal line in the pattern from a reference position corresponding to a position of the hold unit on the arm unit based on the pattern read by the pattern reading unit, and calculating a deflection amount of the arm unit based on the deviation of the horizontal line; a correction value storing unit storing a correction value for correcting a reference position of the media storage cell in which each transported medium is contained or corrected position information obtained by correcting the reference position based on the calculated deflection amount; and a servo control unit controlling movement of the hold unit using the correction value or the corrected position information stored in the correction value storing unit.