| 摘要 |
PROBLEM TO BE SOLVED: To set an overall height low by elevating a board carrier and a board support integrally, releasing the board supporting member of the board support and elevating the board support furthermore, and then elevating the board carrier further. SOLUTION: A board carrier 6 is lowered from a board-carrying position toward a board-holding position along with a board support 31, and the board supporting member of the board support 31 is abutted against the rear surface of a board supported by the board support 6 at the board-holding position, thus supporting the board on the rear surface thereof. Conversely, the board carrier 6 and the board support 31 are elevated integrally from a board-holding position toward the board carrier 6a, and then the board supporting member of the board support 31 is released from the rear surface of the board 1. Subsequently, elevating of the board support 31 is stopped, and only the board carrier 6 is elevated up to the board-holding position. |
