Samsung Electronics Co., Ltd.

S-printing Solution Co., Ltd.

Hp Printing Korea Co., Ltd.

Byung-sun Ahn

Young-Min Kim

Sang-cheol Park

Joo-hwan Noh

Yong-kon Jo

Jin-soo Lee

Byeong-hwa Ahn

Dong-ha Choi

Kyung-shig Chung

Dunaev Boris Nikolaevich

Gi-cheol Jeong

Jeong-yeon Park

Se-min Kim

Smirnova Valentina Konstantinovna

Dong-Woo Kim

Heung-sup Jeong

Jae-Yong Kim

Jong-moon Eun

In-cheol Jeon

Kwang-taek Lim

Soo-yong Kim

Sung-Won Kim

Hyun-Ho Lee

Jung-gee Baek

Ho-ill Hyun

Jeong-yong Ju

Sea-chul Bae

Oh-dug Kwon

Douk-soon Cha

Dong-Ha Chol

Sang-sheol Park

An image forming apparatus in which developers are detachably coupled to a main body. The image forming apparatus includes: a developer mount member on which the developers are mounted and that is attachable to and detachable from the main body; an input contact member disposed on the developers; a power supply unit that is provided in the main body; an output contact member that is disposed in the main body to face a front end of the developer mount member in a mount direction in which the developer mount member is mounted and is electrically connected to the power supply; and intermediate contact members disposed on the front end of the developer mount member in the mount direction and are electrically connected to a respective input contact member, and electrically contacts the output contact member as the developer mount member is mounted.

Image forming apparatus

A jam removing device, an apparatus including a jam removing device, and a method of removing a jam are provided. The jam removing device includes a first door member installed on an in/out path of a tray mounted with a developing unit and is opened or closed with respect to an apparatus body, a second door member installed in the apparatus body in an opposite direction to the first door member and is opened or closed with respect to the apparatus body, a guide unit including a first guide that guides insertion/withdrawal of the tray with respect to the apparatus body and a second guide that guides the first guide so that the developing unit approaches or separates from a transfer unit, a first link unit connecting the first door member and the first guide, and a second link unit connecting the second door member and the first guide.

Device for removing jam, image forming apparatus including the same, and method of removing jam

An image forming apparatus and an image forming method therefor. The image forming apparatus includes: an image forming part, which forms printed and alternate printed images including different developing agents to a recording medium; and a controller which controls the image forming part to form a the printed and alternate printed images according to a comparison of number of pages of a print job and a reference number of pages, and a whether the images of the print job are of a single color.

Image forming apparatus and image forming method thereof to print alternative images at an interval during a print job

An image forming apparatus includes an image forming unit to form an image on a printable medium; a casing to accommodate the image forming unit; a feeding cassette coupled to the casing and arranged so as to move between a feeding position where the feeding cassette is separated from the casing and used to store the printable medium and a waiting position where the feeding cassette is folded up against the casing; a main feeding unit arranged within the casing to store another printable medium and to supply the another printable medium to the image forming unit; a pick-up roller to feed the printable medium from the feeding cassette to the image forming unit when the feeding cassette is in the feeding position; and a pick-up roller cover coupled to a main feeding unit so that the pick-up roller cover can rotate between an open position and a closed position.

Image forming apparatus having pick-up roller cover

A fusing system includes: a fusing unit which comprises a fusing belt which rotates around outer surfaces of at least two rollers which are distanced from each other, and a pressing roller which presses a printing medium together with the fusing belts and fuses an image which is transferred to the printing medium; a heat source which receives power to generate heat, and is mounted inside at least one of the two rollers; a driving source which drives at least one of the two rollers; a sensing unit which senses a surface temperature of the fusing belt; and a control unit which controls the heat source and the driving source so that the fusing belt can be driven when the temperature of the fusing unit increases if a printing order is applied.

Fusing system and control method thereof

A fusing unit provided in a printing path of an image forming apparatus to fuse an image transferred onto a printable medium, the fusing unit including a heat source; a heating roller of which a surface is heated by heat generated by the heat source; a plurality of pressing rollers which is provided opposite to the heating roller and presses a supplied printable medium in cooperation with the heating roller; a fusing pressing belt which is wound on the plurality of pressing rollers and forms a fusing nip contacting with the heating roller; and a supporting unit which rotatably supports the plurality of pressing rollers and guides the fusing pressing belt, a surface hardness hof at least one of the plurality of pressing rollers is greater than or equal to a surface hardness hof the heating roller.

Fusing device and image forming apparatus using the same

An image forming apparatus including: a main body including a manipulating unit which manipulates the power transmission unit, a driving component having a driving assembling member which is disposed in a direction of a rotational driving axial line; a developing device which has a driven assembling member capable of being engaged with and disengaged from the driving assembling member along the direction of the rotational driving axial line; a power transmission unit which is disposed between the driving assembling member and the driven assembling member and enables at least one of the driving assembling and the driven assembling member is moveable in the direction of the rotational driving axial line.

Image forming apparatus and power transmission unit thereof

A paper stacking unit and an image forming apparatus having the same, the paper stacking unit including: a base frame supporting a print media, a cover pivotally connected to the base frame and supporting the print media together with the base frame, and a plate connected to the cover for auxiliarily supporting the print media.

Print medium stacking unit and image forming apparatus with the same

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.

Image forming apparatus having controller to selectively control plurality of driving sources

A printing apparatus having a scanner function. The printing apparatus includes: a printing unit to print an image according to an electro-photographic method; a scanning unit which reads image information from a document sheet, and is installed at the upper side of the printing unit to be able to pivot in upward/downward direction; and an upper cover to cover the upper side of the printing unit, wherein the upper cover is pivoted together with the scanning unit so as to open the upper side of the printing unit.

Printing apparatus having scanner function

An image forming apparatus is provided having a developing unit including a handle. The developing unit of the image forming apparatus includes at least one of a photosensitive body and a developing roller developing a developer on the photosensitive body. A case protects the image forming unit and a handle is installed on the case to handle the developing unit. The handle is rotated by a hinge which pivots, in close proximity to the case, between a first position to protect the case from external impact and a second position opposite to the first position, and which is installed in an approximate center of the case when viewed from a side direction.

Developing unit having foldable handle and image forming apparatus having the same

An image forming apparatus manages information regarding the lifetimes of a plurality of photosensitive media or developing units using a single storage. The image forming apparatus includes a photosensitive unit comprising a photosensitive medium, a developing unit comprising a developing roller that applies developer to the photosensitive medium and a developing device that is removable and contains the developer supplied to the developing roller. A storage is included in one of the photosensitive unit or the developing unit, whichever has a longer lifetime, and stores information regarding at least one of the photosensitive unit and the developing unit. A controller controls the information stored in the storage. The image forming apparatus has a plurality of photosensitive units and/or developing units.

Image forming apparatus and storage thereof

An image forming apparatus includes a belt to transfer a printing medium, a plurality of support rollers which rotatably supports the belt, a photosensitive medium which has a surface on which a visible toner image is formed by charged toner, a transfer roller which is disposed adjacent to the photosensitive medium with the belt interposed therebetween, a power supplying part which supplies power to the transfer roller so that a surface of the transfer roller has an electrical potential, and a control part which controls the power supplying part to supply a pulse power, which has a middle power of a same polarity as a polarity of the charged toner, to the transfer roller so that the charged toner remaining on the belt after the belt transfers the printing medium past the photosensitive medium is transferred back to the photosensitive medium.

Image forming apparatus having remaining toner removing part and method of removing remaining toner therefrom

A paper discharge device and an image forming apparatus having the same are provided. In the paper discharge device, the paper discharge roller has a non-uniform diameter extending in a longitudinal direction and the idle roller contacts with the paper discharge roller in the longitudinal direction of the paper discharge roller so that the print paper unfolds and discharges utilizing a velocity differential at a nip between the paper discharge roller and the idle roller.

Paper discharge device and image forming apparatus having the same

A paper picking-up unit and an image forming apparatus having the same are provided. The paper picking-up unit includes a knock-up plate to stack paper thereon; a shaft disposed at a front end of the knock-up plate to rotate, a pick-up roller engaged with the shaft to rotate and pick-up the paper stacked on the knock-up plate, and a knock-up plate ascending and descending portion to raise and lower the knock-up plate according to the rotation of the pick-up roller. The pick-up roller includes a roller body engaged and rotatable with the shaft, and having a frictional layer to pick-up the paper by causing friction with the paper, a pair of roller housings to support opposite sides of the roller body such that the roller body does not move in a lengthwise direction of the shaft, and a damper disposed at an outer circumference of each roller housing to reduce noise caused by a collision of the roller housings and the knock-up plate.

Growing community of inventors

Suwon-si, South Korea

Byung-sun Ahn