Abstract: A transfer apparatus compensates for a floating movement of the a transfer belt, and an image forming device includes the transfer apparatus. The image forming device includes an image forming device body having an image forming unit, and a transfer apparatus to transfer an image formed by the image forming unit onto a printing medium. The transfer apparatus includes a transfer belt, a driving unit to rotate the transfer belt, and at least one regulating unit to regulate a floating movement of the transfer belt and the driving unit thus to be in position.

Abstract: A toner cartridge has a control board mounted therein and an electrophotographic image forming apparatus using the same. The toner cartridge includes a toner tube having a mounting part on which a control board is mounted, a control board cover for covering the mounting part to mount the control board therein, and a sealing cover for sealing the toner tube.

Abstract: A developing device has a sealing unit that seals a gap between an inner wall of a housing that stores developer and a blade that controls a thickness of developer attached on a developing roller. The sealing unit of the developing device includes a first sealing member inserted into a gap between the inner wall of the housing and an end portion of the blade, a second sealing member placed on the blade to contact the first sealing member, and a pressing member that presses the first and second sealing members so as to prevent gaps between the first and second sealing members. Therefore, the gap between the blade and the inner wall of the housing can be blocked efficiently without damaging the developing roller, and a stable and efficient developing process can be performed.

Abstract: A toner cartridge has a control board mounted therein and an electrophotographic image forming apparatus using the same. The toner cartridge includes a toner tube having a mounting part on which a control board is mounted, a control board cover for covering the mounting part to mount the control board therein, and a sealing cover for sealing the toner tube.

Abstract: A toner cartridge has a control board mounted therein and an electrophotographic image forming apparatus using the same. The toner cartridge includes a toner tube having a mounting part on which a control board is mounted, a control board cover for covering the mounting part to mount the control board therein, and a sealing cover for sealing the toner tube.

Abstract: A used toner collecting device for an image forming apparatus includes a used toner receiver for receiving used toner remaining on a surface of a photoconductive medium, a used toner conveying member for conveying the used toner received in the used toner receiver, and a used toner receptacle for storing the used toner conveyed by the used toner conveying member. The used toner conveying member includes a used toner conveying auger mounted in the used toner receiver along a lengthwise direction of the used toner receiver, a casing disposed between the used toner receiver and the used toner receptacle, and a used toner conveying belt running in the casing. The used toner conveying belt has projecting wings arranged at intervals on an outer surface of the belt. At least one of the projecting wings comprises a projecting rib.

Abstract: A toner cartridge has a control board mounted therein and an electrophotographic image forming apparatus using the same. The toner cartridge includes a toner tube having a mounting part on which a control board is mounted, a control board cover for covering the mounting part to mount the control board therein, and a sealing cover for sealing the toner tube.

Abstract: A transfer apparatus compensates for a floating movement of the a transfer belt, and an image forming device includes the transfer apparatus. The image forming device includes an image forming device body having an image forming unit, and a transfer apparatus to transfer an image formed by the image forming unit onto a printing medium. The transfer apparatus includes a transfer belt, a driving unit to rotate the transfer belt, and at least one regulating unit to regulate a floating movement of the transfer belt and the driving unit thus to be in position.

Abstract: A toner cartridge has a control board mounted therein and an electrophotographic image forming apparatus using the same. The toner cartridge includes a toner tube having a mounting part on which a control board is mounted, a control board cover for covering the mounting part to mount the control board therein, and a sealing cover for sealing the toner tube.

Abstract: A used toner collecting device for an image forming apparatus includes a used toner receiver for receiving used toner remaining on a surface of a photoconductive medium, a used toner conveying member for conveying the used toner received in the used toner receiver, and a used toner receptacle for storing the used toner conveyed by the used toner conveying member. The used toner conveying member includes a used toner conveying auger mounted in the used toner receiver along a lengthwise direction of the used toner receiver, a casing disposed between the used toner receiver and the used toner receptacle, and a used toner conveying belt running in the casing. The used toner conveying belt has projecting wings arranged at intervals on an outer surface of the belt. At least one of the projecting wings comprises a projecting rib.

Abstract: A developing device has a sealing unit that seals a gap between an inner wall of a housing that stores developer and a blade that controls a thickness of developer attached on a developing roller. The sealing unit of the developing device includes a first sealing member inserted into a gap between the inner wall of the housing and an end portion of the blade, a second sealing member placed on the blade to contact the first sealing member, and a pressing member that presses the first and second sealing members so as to prevent gaps between the first and second sealing members. Therefore, the gap between the blade and the inner wall of the housing can be blocked efficiently without damaging the developing roller, and a stable and efficient developing process can be performed.

Abstract: An oxidation catalyst device for a wet-type electrophotographic image forming apparatus and method of controlling the same are provided. The oxidation catalyst device includes a duct for guiding air inside a fixation device to the outside of the fixation device. The oxidation catalyst device further includes a fan for forcibly discharging the air inside of 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 discharged air. The fan is driven at a first rotational speed of N1, during which the oxidation catalyst carrying body is warmed up, and a second rotational speed of N2, during which carrier vapors are heated and resolved.

Abstract: An improved developer for an electrophotographic image forming apparatus is provided. The developer includes a developer frame, a plurality of developing cartridges that are sequentially mounted in the developer frame and have a plurality of toner feeding units for receiving respective toners. A plurality of toner cartridges feed the respective toners to the plurality of toner feeding units, respectively. A toner cartridge frame is detachably mounted in the developer frame and in which the plurality of toner cartridges are mounted.

Abstract: A toner cartridge has a control board mounted therein and an electrophotographic image forming apparatus using the same. The toner cartridge includes a toner tube having a mounting part on which a control board is mounted, a control board cover for covering the mounting part to mount the control board therein, and a sealing cover for sealing the toner tube.

Abstract: An exhaust system of a liquid electrophotography printer includes: an exhaust line to discharge air inside an engine cell to an outside thereof; at least one exhaust fan, which is installed inside the exhaust line to generate and move the air inside the engine cell; a heating coil to heat the air to be discharged through the exhaust line to ignite impurities contained in the air; and an oxidative catalyst filter to filter and deodorize the impurities. The heating coil may be installed inside the exhaust line and coated with platinum on the outer surface. The oxidative catalyst filter may be installed inside the exhaust line, and may be a metallic honeycomb carrier coated with a catalyst mixture, or a non-woven heating mat coated with a catalyst mixture. The heating coil and the oxidative catalyst filter are typically sequentially installed adjacent to each other.

Abstract: A delivery unit and method for removing carrier vapor in a wet-type printer. The delivery unit includes a delivery guide, delivery rollers and a duct for collecting carrier vapor generated from a paper by the latent heat on the paper passing through the delivery guide in order to prevent the carrier vapor from leaking outside of the printer. The carrier vapor collection duct includes upper and lower housings connected to each other to form a predetermined space therein. The upper housing has a vent on one side thereof and an air inlet on the opposite side. A fan is mounted on the vent. The carrier vapor is collected in the duct of the delivery unit and then sent to the catalyst unit by the fan to be oxidized. Accordingly, the delivery unit can prevent the white carrier vapor generated from the paper passing through the delivery unit from leaking outside the printer.

Abstract: A wet type electrophotographic image forming apparatus includes a photosensitive medium, a light exposure device, a developing device, a transfer device, a fuser device, an oxidation catalyst device, a temperature sensor, a power supply device and a control device. The oxidation catalyst device includes an oxidation catalyst carrying body and a heater, and removes vapor of developer solution from the fuser device by utilizing oxidation decomposition. The control device receives data about the temperature detected from the temperature sensor, and variably controls the temperature of the oxidation catalyst device in accordance operational modes such as warm-up mode, standby mode and print mode. Considering the fact that the oxidation catalyst device has higher efficiency at optimum activation temperature, appropriate temperature control can guarantee increased oxidation efficiency of the oxidation catalyst device.

Abstract: A wet-type electrophotographic printer having a photocatalystic filter includes a discharge passage through which air inside a printer body is discharged out, at least one discharge fan positioned inside the discharge passage to guide the air inside the printer body, and a photocatalystic filter positioned inside the discharge passage and having a photocatalystic body coated with a photocatalyst, a plasma electrode and a plasma generator to filter and deodorize the air inside the printer body. Accordingly, a bad smell and air pollution from evaporation of a liquid carrier can be solved, and an excellent printing quality is provided.

Abstract: A gas exhausting apparatus for use in a wet electrophotographic image forming device includes an exhaust duct, an exhaust fan, and an air purification unit. The exhaust duct forms an air flow passage from an inside of a device to an outside of the device. The exhaust fan inhales air from the inside of the device through the exhaust duct and exhausting the air through the exhaust duct to the outside of the device. The air purification unit removes impurities included in the air inhaled by the exhaust fan.