Patent ID: 8706005

Claim:
A process cartridge that is detachably mounted to a main body of an image forming apparatus, the process cartridge comprising: an image carrier cartridge that has an image carrier on which an electrostatic latent image is formed; and a developing cartridge that has a developer carrier that is rotated so as to supply developer to the image carrier; wherein the developing cartridge comprises: a driving input part, to which external power for rotating the developer carrier is input, provided to a first axial end side of the developer carrier; a first supported part; a second supported part; and a third supported part, wherein the image carrier cartridge comprises: a first support part which supports the first supported part of the developing cartridge, wherein the first support part is arranged on a rotational axis line of the driving input part, when viewed from above, under a state in which the process cartridge is mounted to the main body, and wherein the first support part has a support surface extending in parallel to the rotational axis line of the driving input part and the support surface supports the first supported part in a perpendicular direction to the rotational axis line of the driving input part; a second support part which supports the second supported part of the developing cartridge, the second support part being arranged on an image carrier side of the rotational axis line of the driving input part; and a third support part which supports the third supported part of the developing cartridge, the third support part being arranged at an opposite side to the second support part relative to the rotational axis line of the driving input part, which is interposed therebetween, wherein the first support part, the second support part, and the third support part support the first supported part, the second supported part, and the third supported part, respectively, such that a center of gravity of the developing cartridge is arranged in a triangular area defined by the first support part, the second support part, and the third support part.