Abstract: A liquid-type image forming apparatus has a printing engine including a developing unit and a transferring unit and a fixing member. The apparatus includes a carrier vapor-processing device having an oxidation catalyst carrier that accelerates oxidation of carrier vapors occurring in the fixing member. A temperature sensor detects a temperature of the oxidation catalyst carrier. A control member compares information measured by the temperature sensor, and compares the information with predetermined reference values. The printing operation of the printing engine is controlled according to the result of the comparison.

Abstract: A skew adjusting apparatus is provided for an image forming apparatus having a plurality of skew adjusting parts arranged in a plurality of laser scanning units, respectively. The automatic skew adjusting apparatus comprises a driving source, an actuating part arranged on a driving shaft of the driving source so that the actuating part can be selectively connected with one of the skew adjusting parts depending on a position of the driving source. The actuating part actuates the connected skew adjusting part as the driving shaft rotates. A positioning part moves the driving source and a power transmission part transmits or cuts off the power of the driving source to the positioning part so as to move the driving source or stop the movement of the driving source.

Abstract: A wet-type image forming apparatus includes an intermediate transfer medium for receiving images which are formed in a plurality of photosensitive media and overlapped thereon to form an image and transferring the image to a print medium. The intermediate transfer medium runs along a predetermined path. A drying unit heats the intermediate transfer medium to evaporate part of carrier included in the image on the intermediate transfer medium before the image is transferred onto the print medium. A cooling unit cools the heated intermediate transfer medium after the image is transferred onto the print medium by making the intermediate transfer medium directly contact a coolant.

Abstract: A liquid-type image forming apparatus has a printing engine including a developing unit and a transferring unit and a fixing member. The apparatus includes a carrier vapor-processing device having an oxidation catalyst carrier that accelerates oxidation of carrier vapors occurring in the fixing member. A temperature sensor detects a temperature of the oxidation catalyst carrier. A control member compares information measured by the temperature sensor, and compares the information with predetermined reference values. The printing operation of the printing engine is controlled according to the result of the comparison.

Abstract: A carrier vapor diluting unit of a liquid printer dilutes and exhausts carrier vapor generated in a fusing apparatus. The unit includes a housing to surround the thermal roller and the pressing roller, a duct which is connected to an inside and an outside of the housing and forms a path through which a mixed gas in which the carrier vapor is mixed with the air is drawn and exhausted, and a fan which forcibly transfers the mixed gas via the duct.

Abstract: A liquid developer imaging system and a method using the system for developing an image, including a cartridge for containing a developing solution; a developing container for receiving the developing solution supplied from the cartridge via a predetermined supply line; a developing roller partly submerged in the developing solution contained in the developing container, installed to be rotated facing a photosensitive object; and a metering blade for scraping off the developing solution coated on the surface of the developing roller to a predetermined thickness, is provided. According to the system, a developing supply structure can be considerably simplified because a high-density developing solution is directly used in developing an image without a process of diluting the solution, and an image can be developed to have high definition because the concentration of the developing solution coated on the developing roller is regularly controlled by a metering blade.

Abstract: A carrier vapor diluting unit of a liquid printer dilutes and exhausts carrier vapor generated in a fusing apparatus. The unit includes a housing to surround the thermal roller and the pressing roller, a duct which is connected to an inside and an outside of the housing and forms a path through which a mixed gas in which the carrier vapor is mixed with the air is drawn and exhausted, and a fan which forcibly transfers the mixed gas via the duct.

Abstract: The present invention provides an ink delivery system and an ink delivery method of a liquid-type electrophotographic printer which are adapted to detect whether or not liquid in any one of containers which supply ink and a solvent to circulation tanks is exhausted without installing separate level sensors.

Abstract: A photosensitive drum cleaning device of a wet type printer includes: a cleaning blade disposed on a photosensitive drum to contact and wipe an outer circumference of the rotating photosensitive drum, for removing a developer that has not been transferred to a transfer belt but remains on the photosensitive drum; and a developer drain holder for collecting and discharging the developer removed by the cleaning blade. The cleaning blade includes first and second guide wings which are respectively formed at opposite sides of a contact portion of the cleaning blade and the photosensitive drum and which have a predetermined height. The guide wings prevent the developer that is wiped by the cleaning blade from streaming down over the opposite sides of the cleaning blade. The guide wings are formed integrally with the cleaning blade to have a width that is thinner than the thickness of the cleaning blade.

Abstract: A liquid developer imaging system and a method using the system for developing an image, including a cartridge for containing a developing solution; a developing container for receiving the developing solution supplied from the cartridge via a predetermined supply line; a developing roller partly submerged in the developing solution contained in the developing container, installed to be rotated facing a photosensitive object; and a metering blade for scraping off the developing solution coated on the surface of the developing roller to a predetermined thickness, is provided. According to the system, a developing supply structure can be considerably simplified because a high-density developing solution is directly used in developing an image without a process of diluting the solution, and an image can be developed to have high definition because the concentration of the developing solution coated on the developing roller is regularly controlled by a metering blade.

Abstract: An ink delivery system and an ink delivery method are disclosed.

Abstract: A photosensitive belt removing device and a photosensitive belt removing method of an electrophotographic printing apparatus are disclosed.

Abstract: A squeezing apparatus of a liquid electrophotographic color printer for removing carrier of a developer from the developer without causing any damage to an image developed on a photosensitive medium. The squeezing apparatus includes a dual-structure squeezing roll that has a squeezing roll section of a low peel force for squeezing out and removing the carrier from the developer applied to the image area of the photosensitive medium, by its passive-rotational movement while being forced against the image area of the photosensitive medium by a certain force. The squeezing apparatus also includes a pair of friction roll sections, each friction roll section disposed at an end of the squeezing roll section with a gap to oppose each other at a certain interval, the friction roll sections having a high dry-friction coefficient and are passive-rotated while being forced into tight contact with the non-image area of the photosensitive medium by a certain force.