Trop Pruner & Hu, P.C.
Structure for releasing internal pressure in development cartridge when refilling toner
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.
Hewlett-Packard Development Company, L.P.
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inventional additional inventional inventional
Yong Nam Yong Il Seung Gweon Ji Won Jin Hwa Woong Yong
Ahn Moon Lee Moon Hong Choi