| 摘要 |
PROBLEM TO BE SOLVED: To prevent the internal remaining of gases by continuous operation of a vent fan and stopping thereof by a switch operation regardless of the opening and closing action of a cap plate of a development processing device by a simple improvement of a power source circuit and to eliminate noises. SOLUTION: This vent structure is constituted as the vent structure for a processing tank 2 having the vent fan 7 which discharges the gases from various kinds of processing liquids 4 via duct 8 of a ventilation passage communicating with the upper space 1a in the upper part of the processing tank 2 and the cap plate 5 which opens and closes the opening of the upper part of the processing tank in a development processing section 1. The contacts of an opening and closing detector Ph for detecting the opening and closing of the cap plate 5 are respectively disposed at a power source line of a motor for driving the shaft 3x of a rack 3 and a power source line for a fan motor 7M so that the fan 7 is stopped when the cap plate 5 is opened and that the fan is rotated when the cap plate is closed so as to remove the gases.
|
