| 摘要 |
A travelling carriage driving apparatus includes a unit being controlled so as to be always located in a predetermined position, and a travelling carriage accommodating the unit. A guide mechanism allows the travelling carriage to be freely reciprocated. A deviation detecting mechanism detects a deviation of the unit from the predetermined position during the movement of the travelling carriage. A unit position adjusting mechanism is coupled to the unit and the travelling carriage, and moves in a predetermined direction, the unit accommodated in the travelling carraige. A controller controls the unit position adjusting mechanism in accordance with the detected deviation of the unit so that the unit is located in the predetermined position.
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