Developing Cartridge Including Developing Gear Cover

摘要

A developing cartridge includes: a housing having first and second sidewalls through which respective end portions of a developing roller shaft are rotatably inserted; a developing gear, which is arranged outside of the first sidewall, and which is fixed to the end portion of the developing roller shaft; a transmission gear, which is arranged outside of the first sidewall, and which transmits driving force to the developing gear; a first cover member, which is attached to the first sidewall, and which covers the transmission gear; and a second cover member, which is attached to the first sidewall, and which covers the developing gear from an outer side in the axis line direction. The second cover member is formed separately from the first cover member and is arranged side by side with the first cover member outside of the first sidewall.

主权项

1. A developing cartridge comprising:
a developing roller extending in a first direction, the developing roller comprising a developing roller main body and a protruding portion protruding from the developing roller main body in the first direction; a developing gear having an insertion hole through which the protruding portion is inserted, the developing gear being rotatable with the developing roller; a gear cover covering at least a portion of the developing gear, the gear cover having a first boss insertion hole being positioned to one side of the developing gear, and a second boss insertion hole being positioned at an opposite side of the developing gear from the first boss insertion hole, wherein the first boss insertion hole and the second boss insertion hole being arranged in a second direction different from the first direction; a housing having a first boss protruding in the first direction and a second boss protruding in the first direction, the first boss being inserted through the first boss insertion hole, and the second boss being inserted through the second boss insertion hole; and wherein at least one of the first boss insertion hole and the second boss insertion hole is away from the developing gear in the first direction.