Abstract: An image forming apparatus includes a frame, a fusing unit including a unit casing which is detachably attachable to the frame, a heater supported by the unit casing to heat a print medium, a pressure unit supported by the unit casing to press the print medium to the heater and a pressure adjuster provided in the unit casing to relatively move at least one of the pressure unit and the heater with respect to each other to adjust a pressure between the pressure unit and the heater; and a driver which is disposed in the frame to supply a driving force to the pressure adjuster if the fusing unit is attached to the frame.

Abstract: An image forming apparatus, including a heat roller in which a heating source is embedded, a press roller installed close to the heat roller, the press roller contacting the heat roller with a predetermined pressurizing force to form a fixing nip, and at least two overheat prevention devices installed near the heat roller to cut off a power supply to the heating source upon an overheating of the heat roller. One of the overheat prevention devices is installed at portion of the heat roller corresponding to a location within a width of a recording medium passing through the fixing nip and another is installed at a site near an end of the heat roller corresponding to a location outside the width of the recording medium.

Abstract: An image forming apparatus, including a heat roller in which a heating source is embedded, a press roller installed close to the heat roller, the press roller contacting the heat roller with a predetermined pressurizing force to form a fixing nip, and at least two overheat prevention devices installed near the heat roller to cut off a power supply to the heating source upon an overheating of the heat roller. One of the overheat prevention devices is installed at portion of the heat roller corresponding to a location within a width of a recording medium passing through the fixing nip and another is installed at a site near an end of the heat roller corresponding to a location outside the width of the recording medium.

Abstract: A wet-type electrophotographic image forming apparatus and a setting method thereof, comprising a body, a developing unit, an ink cartridge unit for supplying an ink to the developing unit, a door unit, an ink recovery unit for discarding waste ink and circulating ink, and a fitting unit connecting the developing unit and the ink cartridge unit. The door unit moves in relation to the movement of at least one of the ink recovery unit and the fitting unit, allowing a user to easily and precisely set the fitting unit and the ink recover unit using the door unit, which can further support and guide the developing unit 20.

Abstract: Disclosed is an image forming apparatus, including a body in which toner is applied to a printed side of a print medium during a printing operation. The apparatus includes a medium transferring path defined in the body, along which the print medium is transferred during the printing operation, a sensor actuator, disposed in the medium transferring path, to be pivoted by the print medium as the print medium is transferred, a toner sticking prevention member, disposed on the sensor actuator, to contact the printed side of the print medium as the print medium is transferred passed the sensor actuator, the toner sticking prevention member being made of materials to which the toner does not stick, a paper sensor to sense the pivoting of the sensor actuator, and a control portion to perceive the transfer of the print medium according to a signal of the paper sensor.

Abstract: Provided are an image forming unit and a color image forming apparatus having the image forming unit. The image forming unit includes an intermediate transfer belt, a plurality of belt roller shafts formed at both ends of each of a plurality of belt rollers allowing the intermediate transfer belt to perform an endless orbiting motion, a plurality of photosensitive drums lined up along a rotational direction of the intermediate transfer belt, a plurality of photosensitive drum shafts formed at both ends of each of the plurality of photosensitive drums, and a developing frame comprising a plurality of holes supporting the plurality of belt roller shafts and the plurality of photosensitive drum shafts.

Abstract: An apparatus for uniformly supplying the liquid developer and an image forming apparatus having the same are provided. The developer supplying apparatus includes a manifold connected to a connection tube for supplying a liquid developer from an outside and having a developer inlet through which the liquid developer flows into a developing chamber, and a developer dispersion unit, disposed in the developing chamber and located adjacent to an upper part of the developer inlet, for guiding the liquid developer flowing into the developing chamber through the developer inlet so that the liquid developer is dispersed in a horizontal direction. The liquid developer flowing into the lower part of the developing chamber does not directly move toward the upper part of the developing chamber, but is dispersed in a horizontal direction, so that the liquid developer is uniformly dispersed into the whole part of the developing chamber.

Abstract: A wet-type electrophotographic image forming apparatus and a setting method thereof, comprising a body, a developing unit, an ink cartridge unit for supplying an ink to the developing unit, a door unit, an ink recovery unit for discarding waste ink and circulating ink, and a fitting unit connecting the developing unit and the ink cartridge unit. The door unit moves in relation to the movement of at least one of the ink recovery unit and the fitting unit, allowing a user to easily and precisely set the fitting unit and the ink recover unit using the door unit, which can further support and guide the developing unit 20.