Samsung Electronics Co., Ltd.

Hp Printing Korea Co., Ltd.

Gun-soo Chang

Jong-in Kim

Dong-Uk Kim

Byeong-no Jeong

Yong-hun Kim

Young-Min Kim

Ho-jin Jang

Young-chae Kim

Jun-hee Lee

Yun-kyu Sim

Ho-Jin Jang

A developing cartridge includes: a photosensitive unit; a developing unit coupled to the photosensitive unit to be movable between a release position and a developing position; an elastic member to provide an elastic force in a direction to maintain the developing unit at the developing position; a movable member including a gear portion, the movable member and capable of moving to a first position to move the developing unit to the release position and second position to move the developing unit to the developing position; and a switching member connected to a driving gear, wherein as the driving gear rotates in a first direction or a second direction, the switching member is switched between a third position at which the switching member is connected to the gear portion to move the movable member from the second position to the first position and a fourth position at which the switching member is spaced apart from the gear portion to allow the movable member to move from the first position to the second position.

Developing cartridge and electrophotographic image forming apparatus employing same

A process cartridge usable with an image forming apparatus includes a developing member, a photosensitive medium to face the developing member, a pair of supporting plates to rotatably support the developing member and the photosensitive medium; a center moving member rotatably disposed on the supporting plate, the center moving member having a first position in which the photosensitive medium contacts the developing member and a second position in which the photosensitive medium is spaced apart from the developing member; and a separation restraining member formed so that when the center moving member locates at the second position, the separation restraining member restrains the center moving member from moving from the second position.

Process cartridge and image forming apparatus having the same

An image forming apparatus includes a main frame having a first driving force transmitting part, and a first electrode to supply power, a developing cartridge mounted to the main frame, and having a second driving force transmitting part engaged to the first driving force transmitting part to receive a driving force, and a second electrode electrically connected with the first electrode, and a pressing member disposed to the main frame to regulate a widthwise direction movement of the developing cartridge mounted to the main frame to guide an engagement between the first and second driving force transmitting parts, and an electrical connection between the first and second electrodes.

Image forming apparatus with frame and pressing member

A developing cartridge includes a main frame including a photosensitive medium, and a charging member frame including a charging member to charge the photosensitive medium and detachably disposed at the main frame. The main frame includes a plurality of frame reference grooves, and the charging member frame includes a plurality of frame reference projections to be inserted into the plurality of frame reference grooves of the main frame.

Developing cartridge, image forming apparatus having the same, and maintenance method of developing cartridge

Growing community of inventors

Suwon-si, South Korea

Gun-soo Chang