DEVELOPER CARTRIDGE AND DRUM CARTRIDGE

摘要

PROBLEM TO BE SOLVED: To provide a developer cartridge in which a gear on the side surface of the developer cartridge can be rotated even when a projection, such as a rib, is disposed at a position close to a developing roller, and a drum cartridge capable of mounting such a developer cartridge.SOLUTION: On an outer surface 2A of a housing 2 in a developer cartridge 1A having a developing roller 3, a developing roller gear 12 connected to the developing roller 3, a coupling 11 gearing with the developing roller gear 12, an idol gear 14 gearing with the coupling 11 and an agitator gear 15 gearing with the idol gear 14 and connected to the agitator 5 are arranged, and a first projection 20A and a second projection 21A shorter than an interval between the outer surface 2A and a gear part 15B of the agitator gear 15 are provided.SELECTED DRAWING: Figure 3