摘要:
A fixing unit and an image forming apparatus using the same. The fixing unit includes: a pair of fixing rollers that rotate and face each other and apply heat and pressure to a toner image transferred to the sheet of paper using electrophotography; a plurality of guide members disposed in the width direction of the sheet of paper to guide the sheet of paper discharged from the pair of fixing rollers to the discharge path, each of the guide members including a first guiding portion extending toward the discharge path from an outlet of the pair of fixing rollers; a first arm rotatably installed between the guide membersthat elastically contact the sheet of paper drawn out of the pair of fixing rollers and guide the sheet of paper to the discharge path; and an elastic member elastically biasing the first arm such that the first arm contacts the sheet of paper, wherein a guide member adjacent to the first arm has a second guide portion that is shorter than the first guide portion.
摘要:
A fixing unit and an image forming apparatus using the same. The fixing unit includes: a pair of fixing rollers that rotate and face each other and apply heat and pressure to a toner image transferred to the sheet of paper using electrophotography; a plurality of guide members disposed in the width direction of the sheet of paper to guide the sheet of paper discharged from the pair of fixing rollers to the discharge path, each of the guide members including a first guiding portion extending toward the discharge path from an outlet of the pair of fixing rollers; a first arm rotatably installed between the guide membersthat elastically contact the sheet of paper drawn out of the pair of fixing rollers and guide the sheet of paper to the discharge path; and an elastic member elastically biasing the first arm such that the first arm contacts the sheet of paper, wherein a guide member adjacent to the first arm has a second guide portion that is shorter than the first guide portion.
摘要:
A system to replace a photosensitive unit and a transfer unit in a printer includes a frame provided in a printer body, and a locking unit which is provided in the frame and simultaneously locks and unlocks the photosensitive unit and the transfer unit that enter via an entrance of the printer body and are seated in a mounting location. The locking unit may include a rotating lever, a rotating cam, and a connection bar which connects the rotating cam to the rotating lever.
摘要:
A system to replace a photosensitive unit and a transfer unit in a printer includes a frame provided in a printer body, and a locking unit which is provided in the frame and simultaneously locks and unlocks the photosensitive unit and the transfer unit that enter via an entrance of the printer body and are seated in a mounting location. The locking unit may include a rotating lever, a rotating cam, and a connection bar which connects the rotating cam to the rotating lever.
摘要:
An image forming apparatus includes a developing unit to form an image using a developing agent on one side of a printing medium transported along a simplex printing path, a fixing unit to fix the developing agent on the printing medium, a discharging roller to discharge the printing medium that passes the fixing unit, and a first driving source to drive the developing unit, the fixing unit and the discharging roller.
摘要:
A fuser of an electrophotographic image forming apparatus fuses a toner image to a recording medium by applying heat and pressure. The fuser includes first and second rollers that are elastically biased against each other and that rotate while facing each other. An elastic layer is provided on at least one of the first and second rollers, and a heat source is provided on at least one of the first and second rollers. A gear is coupled to an end portion of at least one of the first and second rollers. First and second interval maintenance members are respectively coupled to the first and second rollers at the end portions of the rollers which are opposite to the end portion where the gear is coupled. The first and second maintenance members face each other and contact each other to regulate an amount of compression of the elastic layer.
摘要:
A fusing device that is provided on a printing passage of an image forming apparatus and fuses an image transferred to a print medium, the fusing device including: a heating roller; a pressure roller to press a print medium fed along the printing passage against the heating roller; a separation roller to separate the print medium from the heating roller; a fusing pressure belt that winds around the pressure roller and the separation roller; a first elastic member to pressure the pressure roller towards the heating roller along a first line; and a second elastic member to pressure the separation roller towards the heating roller, wherein the first line passes through a center of the pressure roller and forms an angle towards the separation roller with a second line that passes through a center of the heating roller and the center of the pressure roller.
摘要:
A bearing structure reduces friction between a roller and a bearing under a pressure. A fusing device for an image forming apparatus employs the bearing structure. The bearing structure installed between a frame and a rotary shaft supports the rotary shaft on the frame. A bearing body has a fitting part in which the rotary shaft is rotatably fitted. A rolling support unit is installed on at least one portion inside the fitting part to contact the rotary shaft in a rolling manner. The fusing device includes a fusing roller in which a heater is embedded, and a pressure roller that faces the fusing roller and cooperates with the fusing roller in pressing a sheet of paper passing therebetween. Bearing structures rotatably support the fusing roller and the pressure roller on a frame. Each bearing structure includes a bearing body having a fitting part, and a rolling support unit installed on at least one area inside the fitting part to contact the fitted roller in a rolling manner.
摘要:
A fusing apparatus and method for an image forming apparatus comprise a housing, a first roller mounted in the housing, a second roller rotated in contact with the first roller, a heater movably mounted in at least one of the first and the second rollers and comprising a first heater and a second heater, a first power supplying terminal and a second power supplying terminal movably supported in the housing, and a pair of connection units movably supported in the housing to connect the respective heater terminals to the corresponding power supplying terminals. The power supplying terminals and the connection units have a predetermined gap with an outer surface of the housing, such that when the housing expands in a lengthwise or horizontal direction of the heater, the outer surface of the housing tightly contacts with at least one of the heater terminals, the power supplying terminals and the connection units, thereby fixing or securing the heater in the housing.
摘要:
A fusing unit of an image forming apparatus and method for preventing defective fusing of an image are provided, in which a heating roller includes a heat source and is rotatably installed on a frame, a pressing roller presses a sheet of paper toward the heating roller to fuse a toner image on the paper, a pressing unit elastically bias the pressing roller to the heating roller, and a pressure sensor measures a pressure of the pressing roller. Accordingly, defective fusing of a toner image onto the paper and overheating of the fusing unit can be prevented.