Abstract: An image forming apparatus including an image forming unit to form an image on a print medium, the image forming apparatus including a guide shaft, first and second shaft insertion members into which the guide shaft is inserted, a unit main body including first and second insertion holes provided along the guide shaft and whose diameters larger than external diameters of the first and second shaft insertion members, respectively, and an adhesive to adhere the first and second shaft insertion members inserted into the first and second insertion holes, to the unit main body.

Abstract: An image forming apparatus including an image forming unit to form an image on a print medium, the image forming apparatus including a guide shaft, first and second shaft insertion members into which the guide shaft is inserted, a unit main body including first and second insertion holes provided along the guide shaft and whose diameters larger than external diameters of the first and second shaft insertion members, respectively, and an adhesive to adhere the first and second shaft insertion members inserted into the first and second insertion holes, to the unit main body.

Abstract: A wet-type image forming apparatus includes a body having an openable door. A developing unit is installed in the body and develops an image on a photosensitive body. An ink cartridge is detachable with respect to the body and stores ink therein. A fitting unit is installed between the developing unit and the ink cartridge. The fitting unit moves up and down to couple the developing unit to the ink cartridge to withdraw the ink from the developing unit.

Abstract: Disclosed is an oxidation catalyst device comprising a duct, a fan, a liquefier member, heaters, and an oxidation catalyst filter. Here, the liquefier member liquefies part of the carrier vapor produced by a fixing device, so that a catalyst of the oxidation catalyst filter shares part of the oxidation of the carrier vapor. The control method of the oxidation catalyst device comprises the steps of intaking the carrier vapor produced inside of a fixing device; cooling and liquefying the carrier vapor taken in; performing a first oxidation on the remaining unliquefied carrier vapor; and performing a second oxidation on the liquefied carrier among the carrier vapor.