Oxidation catalyst unit, wet-type electrophotographic image forming apparatus having the same and method for judging catalyst life span

摘要

An oxidation catalyst unit for judging a life span of an oxidation catalyst and a wet-type electrophotographic image forming apparatus having the oxidation catalyst unit, and a method of judging the life span of the oxidation catalyst. The oxidation catalyst unit includes a duct unit, a fan motor, a heater, an oxidation catalyst filter, and a temperature sensing unit. The temperature sensing unit senses upper and lower atmospheric temperatures of the oxidation catalyst filter. A controller of the wet-type electrophotographic image forming apparatus having the oxidation catalyst unit then compares data on the upper and lower atmosphere temperatures sensed by the temperature sensing unit with input reference data to judge the life span of the oxidation catalyst.