| 摘要 |
PURPOSE:To inhibit a front door from being opened unless an upper and a lower housing are opened, by providing a lock mechanism to the front door. CONSTITUTION:When the front door 3 is applied with force for opening it while the upper housing 17 is closed, the tip part 36b of a lever 36 abuts on the other end 39b of a stopper 39, which receives the clockwise moment of rotation around a pin 40. The lever 36, however, is not disengaged from the stopper, so the front door 31 never open. When the upper housing 17 is opened, the lower end 36a of the lever 36 is released from contacting the line 18a of the lower housing 18 and moves down. Consequently, the upper end 36b of the lever 36 is lower than the other end 39b of the stopper 39 and becomes rotatable around a shaft 35. Then, the front door 31 is opened and a process unit 30 is drawn out along rails 29a and 29b. |
