Hewlett-packard Development Company, L.p.

Seung Gweon Lee

Woongyong Choi

Woong Yong Choi

Jin Hwa Hong

Jinhwa Hong

Jiwon Moon

Yongnam Ahn

Yongil Moon

Yong Il Moon

Ji Won Moon

Yong-Kwan Cho

Yong Nam Ahn

A printer may include a main body and a development cartridge attachable to and detachable from the main body. The development cartridge may comprise a developing portion in which a photoconductive drum and a developing roller are provided, a waste toner container to receive waste toner removed from the photoconductive drum, a toner container connected to the developing portion and to receive toner, and a toner refilling portion connected to the toner container and to refill toner through the toner refilling portion into the toner container. The printer may include a communicating portion provided in the main body to be connected to the toner refilling portion to provide an access the toner refilling portion from outside of the main body when the development cartridge is attached to the main body.

Structure to refill toner to development cartridge mounted in main body

A toner cartridge includes a body including a first toner discharge portion, a discharge shutter configured to rotate relative to the body about a first rotation axis to a discharge position at which toner is allowed to be discharged via the first toner discharge portion and a closed position at which the first toner discharge portion is closed, and a locking member supported by the body and configured to rotate about a second rotation axis different from the first rotation axis to a locked position at which a first interference portion of the discharge shutter located at the closed position is caught by a second interference portion, thereby not allowing the discharge shutter to rotate and an unlocked position at which the discharge shutter is allowed to rotate.

Shutter structure for toner refill cartridge

A development cartridge is provided. The development cartridge includes a toner container, having a first air vent and a second air vent, to accommodate a toner, a developing portion to receive the toner from the toner container and having a developing roller installed therein, a toner refilling portion, connected to an end of the toner container in a longitudinal direction, to provide the toner container with a passage for refilling the toner, a filter installed in the first air vent to reduce leakage of the toner, and a pressure releasing member to communicate with the toner container via the second air vent and being transformable in a contracted state and an expanded state to expand a volume of the toner container, wherein the first air vent is formed at a position farther from the toner refilling portion than the second air vent.

Structure for releasing internal pressure in development cartridge when refilling toner

A toner cartridge includes a container having an opening, a flexible bag in which toner is received, a sealing portion configured to seal the flexible bag, and an extension extending from an edge of the sealing portion, the flexible bag being accommodated in the container so that the sealing portion faces the opening, a rotatable member rotatably provided on the container, a movable member connected to the extension and being movable from a first position close to the opening to a second position far from the opening in a longitudinal direction of the container, a rope having a first end portion connected to the rotatable member and a second end portion connected to the movable member, and a bias member configured to elastically bias the rotatable member to rotate in a direction in which the rope is switched from an unwound state to a wound state.

Toner cartridge for refilling toner by using elastic force

Growing community of inventors

Pangyo, South Korea

Seung Gweon Lee