| 摘要 |
A cassette library apparatus and a posture control method thereof are provided. A swing arm (16a) is capable of chucking or releasing a cassette (1) by getting into a recessed part (10a) of the cassette (1) and getting out of the recessed part (10a) when a swing frame (34) swings up and down. The apparatus includes a swing mechanism (47, 48) for swinging the swing frame (34) and the swing arm (16a), a stepping motor (45) for driving the swing mechanism (47, 48), a device (51, 52) which detects the swing arm (16a) being in a specific posture, and a device (55) which detects the posture of the swing arm (16) by counting a number of pulses supplied to the stepping motor (45) when the posture of the swing arm (16a) is changed from the specific posture by drive of the stepping motor (45).
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