Patent ID: 9069280
Filing Date: 2015-06-30
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; 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 has 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 and having a D-cut part, the gear fixing part fixing the developing gear, a gear cover covering at least a portion of the developing gear, the gear cover having an outwardly protruding insertion part through which the small diameter part of the second protrusion is inserted.