Samsung Electronics Co., Ltd.

S-printing Solution Co., Ltd.

Hp Printing Korea Co., Ltd.

Tae-il Jung

Sung-dae Kim

Pil-seung Oh

Chang-woo Lee

Tae-hee Kim

Soo-yong Kim

A development cartridge attachable to and detachable from a main body of an image forming apparatus includes a photosensitive unit including a photosensitive drum, a developing unit including a developing roller and rotatably coupled to the photosensitive unit with respect to a hinge axis, a driving gear configured to rotate in a first direction for a printing operation or a second direction opposite the first direction, a driving member positioned coaxially with the driving gear and configured to be rotated by the driving gear, a first one-way clutch configured to connect the driving member with the driving gear only when the driving gear rotates in the second direction, and a first moving member configured to be connected to the driving member so as to reciprocate between a first location where a development nip is formed and a second location where the development nip is released.

Development cartridge and electrophotographic image forming apparatus using the same

A paper feeding apparatus for an image forming apparatus is provided. The paper feeding apparatus includes a first paper feeding roller, a first one-way rotation transmission member disposed coaxially on the first paper feeding roller to transmit a first one-way rotational force to the first paper feeding roller, a second paper feeding roller spaced apart from the first paper feeding tray, a second one-way rotation transmission member disposed coaxially on the second paper feeding roller to transmit a second one-way rotational force to the second paper feeding roller, a drive source to rotate the first and second paper feeding rollers, a first power transmission member disposed between the first one-way rotation transmission member and the drive source, and a second power transmission member disposed between the second one-way rotation transmission member and the drive source.

Paper feeding unit and image forming apparatus having the same

A power transmitting apparatus includes a shaft, first and second passive members mounted on the shaft to be rotatable, and a driving member that is mounted on the shaft and rotates in connection with a driving source, and that according to a rotation direction, slides toward the first and second passive members along the shaft, so as to selectively establish a power connection with the first and second passive members.

Power transmitting apparatus and image forming apparatus implementing the same

An image forming apparatus includes an image forming unit configured to perform a printing operation by using a plurality of photosensitive media, a plurality of motors configured to drive the plurality of photosensitive media, and a motor controller configured to control a phase and a velocity of the other motor based on a periodic velocity of one motor from among the plurality of motors.

Growing community of inventors

Suwon-si, South Korea

Tae-il Jung