Patent ID: 11934113
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A developing cartridge comprising:
a developing roller rotatable about a first axis extending in a first direction;
a casing configured to accommodate a developer therein, the casing having a first outer surface and a second outer surface spaced apart from the first outer surface in the first direction;
a coupling rotatable about a second axis extending in the first direction, the coupling being positioned at the first outer surface, the coupling including a coupling gear;
an idle gear including a large-diameter gear and a small-diameter gear, the idle gear being positioned at the first outer surface, a diameter of the small-diameter gear being smaller than a diameter of the large-diameter gear, the large-diameter gear being positioned between the first outer surface and the small-diameter gear in the first direction, the large-diameter gear meshing with the coupling gear;
an agitator rotatable about an agitator axis extending in the first direction;
an agitator gear mounted to the agitator and rotatable with the agitator about the agitator axis, the agitator gear being positioned at the first outer surface, the agitator gear including a first gear part and a second gear part positioned between the first outer surface and the first gear part in the first direction, a first diameter of the first gear part being larger than a second diameter of the second gear part, the first gear part meshing with the small-diameter gear;
a partially toothless gear including gear teeth and a toothless part, the gear teeth meshing with the second gear part of the agitator gear, the partially toothless gear being rotatable about a partially toothless gear axis extending in the first direction, the partially toothless gear being positioned at the first outer surface.