Samsung Electronics Co., Ltd.

Karp-sik Youn

Jin-ho Park

Youn-gun Jung

Young-su Lee

Dong-woo Ha

Gun Young Heo

Jung-dae Heo

Jin-Ho Park

Soo-Hyun Kim

Young-jung Yun

Heon-soo Park

Masahiko Habuka

Hee-yuel Roh

An inkjet image forming apparatus includes a main body frame, a medium supplying unit which is coupled to the main body frame and supplying a print medium, an image forming cartridge which is coupled to the main body frame, forms an image on the supplied print medium, and including a nozzle to eject ink, and a wiping assembly which wipes the nozzle. The wiping assembly includes a wiping sheet storage unit in which the wiping sheet is stored as being wound, a transfer shuttle which moves along arrangement of the nozzle by a driving force of a driving source, a pressing member which is provided in the transfer shuttle and presses a region of the wiping sheet against the nozzle to perform wiping using the wiping sheet, and a wiping sheet support unit which is provided in the transfer shuttle and restricts move of the wiping sheet while the nozzle is wiped.

Wiping assembly and image forming apparatus having the same

A power transmission, which transmits a driving force from a driving roller to a driven roller by using a friction roller. The power transmission includes a driving roller, a driven roller spaced apart from the driving roller, and a friction roller to transmit a driving force from the driving roller to the driven roller. The friction roller is disposed above a line connecting between centers of the driving roller and the driven roller. With this construction, the friction roller transmits the driving force in a state of being interposed between the driving rollers and the driven rollers by rotation thereof, thereby allowing the power transmission to have a simplified structure, which does not require a separate pressing spring, and at the same time, to generate a minimum amount of power loss.

Power transmission method and apparatus, medium discharging apparatus using the same, and image forming device having the medium discharging apparatus

A scrapping unit and an image forming apparatus having the same, and cleaning methods thereof to improve a maintenance performance. The scrapping unit cleans a polluted member disposed in an image forming apparatus and stained by a polluting material. The scrapping unit may include an endless belt to circulate between an exposed position where a surface of the endless belt is exposed toward the polluted member, and a non-exposed position where the surface of the endless belt is not exposed with respect to the polluted member, and a belt support frame which includes a belt support surface to support the endless belt so that the endless belt can be unfolded in the exposed position, and a storing space to store the endless belt so that the endless belt can be folded in the non-exposed position.

Scrapping unit and image forming apparatus having the same, and cleaning methods thereof

A printing head cleaning apparatus usable with an image forming apparatus includes a spraying unit to spray a quantity of cleaning solution using a sprayer and a cleaning shuttle to carry the spraying unit. The spraying unit includes a cleaning solution tank to store the cleaning solution sprayed by the sprayer, a spraying cam to operate the sprayer to selectively spray a quantity of the cleaning solution, and a cam driving member to cause the spraying cam to rotate according to movement of the cleaning shuttle.

Printing head cleaning apparatus, image forming apparatus having the same and method to clean printing head

A two-side scanning apparatus and a method of controlling the two-side scanning apparatus including a sheet feeding roller train installed on a first side of a white roller to transfer a sheet to the white roller and including two rollers contacting each other, a sheet discharging roller train installed on a second side of the white roller opposite the sheet feeding roller train, a sheet reversing path surrounding a circumferential surface of the white roller to receive and guide the sheet being transferred from the sheet discharging roller train back between the white roller and an image sensor, and a sheet guide plate installed between the white roller and the sheet discharging roller train to pivot at a predetermined angle and to guide the sheet toward the sheet reversing path when the sheet is transferred from the sheet discharging roller train toward the white roller.

Two-side scanning apparatus and a method of controlling the same

An array type multi-pass inkjet printer head and an operating method thereof. The array type inkjet printer includes an image dividing unit to divide an image to be printed into a plurality of images, a printing unit having a head and to print one of the plurality of divided images on a printing medium using the head, the head being formed in a lateral direction and having a plurality of nozzles disposed in a longitudinal direction thereof, a feedback unit to reversely move the printing medium to a preceding end of the printing unit after the one of the plurality of divided images is printed by the printing unit, and a control unit to control the printing unit to print a divided image next to the printed one image on the reversely printing medium.

Array type multi-pass inkjet printer and operating method thereof

A one-molding frame of an image forming apparatus includes a feeding part to feed sheets of paper one by one, a printing unit with a printing module provided along a paper feeding passage to form an image on the paper fed from the feeding module, and an ejecting unit with an ejecting module to eject and stack the paper after the printing unit forms the image on the paper. The printing module includes an array type inkjet head with a nozzle unit having a length corresponding to a width of the paper, and the printing unit includes at least one aligning mark to align the inkjet head. The one-molding frame improves an alignment precision between the one-molding frame and the inkjet head and a head gap precision between the inkjet head and the paper. Further, a manufacturing cost of the image forming apparatus can be reduced by employing the one-molding frame.

One-molding frame of image forming apparatus

A service station system for an inkjet printer includes head caps to revolve between a capping position and an uncapping position of printer heads, a slider to slide with respect to the head caps and having wipers mounted on a front end portion thereof. The service station system also includes a slider movement unit to slide the slider, and a revolution unit disposed between the head caps and the slider, to revolve the head caps in association with the sliding of the slider with respect to the head caps. Accordingly, services for the printer heads may be systematically carried out in a relatively small space, and in particular, a compact and small-sized service station system is provided so that a volume from front to rear of an inkjet printer may be reduced.

Service station system for an inkjet printer

A registration device includes a feed roller which presses one surface of a sheet to feed the sheet. A cartridge unit is placed opposite to the feed roller and includes a follower roller to support the other surface of the sheet. An image forming unit forms an image on the sheet and a regulating element rotates the cartridge unit relative to the feed roller so that an arranged sheet can be fed into the image forming unit. The registration device can regulate the parallel degree between the cartridge unit and the feed roller in the process of assembling the image forming apparatus to prevent the skew of the sheet.

Registration device and image forming apparatus with the same

An apparatus for and method of preventing paper double feeding in a paper feeding unit of a printer include a stripper which is installed to be inclined at a predetermined angle and attached to at least one front side of a plurality of paper guides, a lever which is installed at a rear side of the stripper and has a contact surface with paper transferred by a pickup roller, and a lever shaking unit which shakes the lever so that the contact surface intermittently contacts a back side of the paper transferred by the pickup roller. The method includes applying a first paper feeding resistance force to a first sheet of paper which is picked-up by the pickup roller and transferred into the printer, and intermittently applying a second paper feeding resistance to a rear side of a second sheet of paper.

Apparatus for and method of preventing paper double feeding in printer

An array inkjet head includes a body in which a space for accommodating ink is formed. A nozzle unit is formed on the body, and ejects ink from the body. The length of the nozzle unit substantially corresponds to the width of printing paper in a main scanning direction. A plurality of star wheels are rotatably disposed in the body in the main scanning direction proximal an exit end of the nozzle unit. A portion of the plurality of star wheels protrudes from the body.

Array inkjet head and inkjet image forming apparatus having the same

A pulley fixing apparatus of an office machine having a pulley fixing part rotatably fixing a driven pulley on a frame, a sliding part movably supporting the pulley fixing part on the frame, and an automatic tension adjusting part elastically urging the pulley fixing part in a direction such that the driven pulley imparts a predetermined tension to a power-transmitting belt. The pulley fixing apparatus readily enables mounting and dismounting of the power-transmitting belt and the driven pulley and control of the power-transmitting belt tension by simplifying structure and assembly. Further, the pulley fixing apparatus reduces manufacturing cost and assembly time by decreasing the number of parts.

Pulley fixing apparatus of image forming apparatus

Provided is an ink-jet printer comprising a carriage, which is rotatably installed on a guide shaft and includes a stacking portion on which an ink cartridge is stacked, and a balancing portion installed on a side opposite to the stacking portion, so as to move in a straight reciprocating motion along the guide shaft; and a head gap adjusting apparatus, which is rotatably installed in the balancing portion and adjusts a head gap by rotating the carriage centering on the guide shaft according to a thickness of a printing medium.

Ink-jet printer having head gap adjusting apparatus

An apparatus to control static electricity in an inkjet printer, includes a feeding roller to convey paper being fed from a paper-feeding portion to be placed under a print head; a pinch roller to rotate in contact with the feeding roller; a holder on which a shaft of the pinch roller is rotatably supported; a frame made of a metallic material, to support the holder; and a ground member to ground the pinch roller to the frame, to control the static electricity occurring in the paper passing between the feeding roller and the pinch roller.

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Hwaseong-si, South Korea

Karp-sik Youn