Patent ID: 7620347

Claim:
A developing cartridge, comprising: a frame including opposing side walls, each of the opposing side walls having an outer surface and an inner surface; a developing roller including a developing roller body and a developing roller shaft; a supply roller that supplies a developing agent to the developing roller, the supply roller including a supply roller body and a supply roller shaft, the developing roller shaft and the supply roller shaft being inserted into respective openings formed in the inner surfaces and the outer surfaces such that the developing roller body and the supply roller body are positioned between the inner surfaces; a developing roller drive gear, provided at the developing roller shaft on the outer surface of one of the opposing side walls of the frame; a supply roller drive gear, provided at the supply roller shaft on the outer surface of the one of the opposing side walls of the frame; an input gear that engages the developing roller drive gear and the supply roller drive gear; and a holder integrally formed with a first support that supports the developing roller shaft, a second support that supports the supply roller shaft and a third support that supports the input gear, the holder being mounted on the outer surface of the one of the opposing side walls of the frame to at least partially cover the developing roller drive gear, the supply roller drive gear and the input gear, wherein the holder further comprises a developing agent receiving portion that extends away from a remainder of the gear holder to a position opposed to the developing roller.