Patent ID: 8958727
Filing Date: 2015-02-17
Classification: G03G

Abstract:
1. A cartridge detachably attachable to a main body of an image forming apparatus, the cartridge comprising: a developer storage chamber partitioned into a first storage portion and a second storage portion and configured to store a developer; a replenishment opening disposed in the second storage portion, through which the developer passes from inside the developer storage chamber to outside the developer storage chamber; a conveyance member disposed in the second storage portion and configured to convey the developer in a predetermined conveying direction, the conveyance member including a first conveyance portion located on an upstream side of the replenishment opening to convey the developer in the conveying direction, and a second conveyance portion located on a downstream side of the replenishment opening to convey an amount of a developer smaller than that of the developer conveyed by the first conveyance portion in the conveying direction; a sealing member configured to seal the replenishment opening; a removing member configured to remove the sealing member from the replenishment opening by being driven; and a driving force receiving portion configured to receive a driving force to drive the removing member and the conveyance member from the main body of the image forming apparatus.