Patent ID: 9026004
Filing Date: 2015-05-05
Classification: G03G

Abstract:
1. A developing cartridge comprising: a developing roller having a rotational axis, the developing roller including: a developing roller main body having a first end and a second end opposite to the first end; and a first protrusion protruding outwardly from the first end of the developing roller main body along the rotational axis, a second protrusion protruding outwardly from the second end of the developing roller main body along the rotational axis, and a developing gear, wherein the first protrusion having a circular peripheral surface having no stepped circumferential surface; and wherein the second protrusion includes: a small diameter part having a circular peripheral surface having a diameter smaller than a diameter of the first protrusion; and a gear fixing part disposed between the developing roller main body and the small diameter part along the rotational axis, the gear fixing part fixing the developing gear, the gear fixing part having a D-cut part and a recess formed on an outer surface of the gear fixing part, the developing gear positioned between the developing roller main body and the recess.