Patent ID: 8600267
Filing Date: 2013-12-03
Classification: G03G

Abstract:
1. A developer cartridge detachably configured to be assembled to a developing device defining therein a developing chamber, the developer cartridge comprising: a first accommodating portion configured to accommodate therein a developing agent and positioned beside the developing device when assembled to the developing device, the first accommodating portion having a first wall part neighboring the developing device and protruding toward an interior of the first accommodating portion, the first wall part having a first wall region formed with a first through-hole allowing communication between an interior of the first accommodating portion and the developing chamber, an intermediate wall region, and a second wall region formed with a second through-hole allowing communication between the interior of the first accommodating portion and the developing chamber; and a first agitator defining a rotation axis and rotatably disposed in the first accommodating portion and configured to make sliding contact with the first wall part in an order from the first wall region formed with the first through-hole to the intermediate wall region, and subsequently to the second wall region formed with the second through-hole, the first wall region being sloped toward the rotation axis such that passing of the developing agent carried on the first agitator through the first through-hole is facilitated, the intermediate wall region being positioned closer to the rotation axis than the first wall region and the second wall region to the rotation axis, and the second wall region being sloped toward the rotation axis, wherein the first wall region of the first wall part has a flat shape, and the second wall region of the first wall part has a flat shape, and the intermediate region has one of an apex shape and a cut-out shape, the apex shape joining the first wall region and the second wall region, and the cut-out shape being formed as if the apex shape is chamfered.