Abstract: A developing cartridge includes a housing, a storage medium having an electrical contact surface, a holder holding the electrical contact surface and movable with respect to the housing between a first position and a second position, and a roller including a first roller protrusion. The first roller protrusion is movable between a third position and a fourth position in accordance with rotation of the roller. The holder is movable in accordance with movement of the first roller protrusion. As the first roller protrusion moves from the third position to the fourth position, the holder moves from the first position to the second position.

Abstract: A cartridge includes: a casing having a first opening; a storage bag accommodated in the casing and having a second opening; a seal for closing the second opening; a shaft rotatable; and a cap for closing the first opening. Toner is configured to be replenished through the first opening. Toner stored in the storage bag is configured to be discharged into the casing through the second opening. The shaft is rotatable about a first axis extending in a first direction together with the seal such that the seal closing the second opening is peeled off to open the second opening. The cap is attachable to and detachable from the casing.

Abstract: An image forming apparatus includes a housing in which an exhaust port is formed, a fan, a duct extending in an exhausting direction and configured to accommodate the fan, the duct including a downstream end in the exhausting direction, and an exhaust filter disposed between the duct and the exhaust port in the exhausting direction, the exhaust filter including a first surface facing the exhaust port and a second surface facing the duct. Dimensions of the duct each orthogonal to the exhausting direction are smaller than dimensions of the exhaust filter each orthogonal to the exhausting directions. A perimeter of the downstream end of the duct in the exhausting direction is in contact with the second surface of the exhaust filter.

Abstract: A developing cartridge includes a housing, a storage medium having an electrical contact surface, a holder holding the electrical contact surface and movable with respect to the housing between a first position and a second position, and a roller including a first roller protrusion. The first roller protrusion is movable between a third position and a fourth position in accordance with rotation of the roller. The holder is movable in accordance with movement of the first roller protrusion. As the first roller protrusion moves from the third position to the fourth position, the holder moves from the first position to the second position.