PURPOSE: To discharge an air in an image forming device as a clean air free from ozone of toner powder.
CONSTITUTION: A removal device is installed outside an image forming device, and a compressed air is fed into an exhaust pipe 10A as an air current inside the removal device by compressing the air in the image forming device using a compression pump AP. Further, this air current is released into a water tank W as an air bubble from an exhaust hole 20A at the tip of the exhaust pipe 10A, then the air bubble is turned to a fine form by activation of a ultrasonic oscillator S to allow the form to pass through the water, and the ozone is inactivated in this process. At the same time, the toner absorbed in the water is removed by absorption using a filter (f) with the help of water recirculation in the water tank W.
ENDO ISAO
NOMORI HIROYUKI
