Patent ID: 7209679

Claim:
A method for controlling an oxidation catalyst device for a wet-type electrophotographic image forming apparatus, in which the oxidation catalyst device comprises a duct for guiding air inside a fixation device, which applies heat and pressure to a paper deposited with a developer consisting of ink and liquid carrier, to the outside of the fixation device, a fan for forcibly discharging the air inside the fixation device, a heater for heating the air discharged from the fixation device, and an oxidation catalyst device-carrying body for facilitating oxidation resolution reaction of the carrier vapors entrained in the air as being discharged, the method comprising the steps of: (A) driving the fan at a rotational speed of N 1 , during which the oxidation catalyst carrying body is warmed up; and (B) driving the fan at a rotational speed of N 2 , during which the carrier vapors are heated and resolved; wherein the rotational speed N 1 of the fan in step (A) is larger than the rotational speed N 2 of the fan in step (B).