Patent ID: 8909095

Claim:
A process cartridge removably installed in a body of an image forming apparatus, the process cartridge comprising: an image bearer to rotate in a predetermined direction; a development device to develop, with developer contained therein, a latent image formed on the image bearer, the development device including: a developer bearer disposed rotatably and facing the image bearer, a developer conveyance member to rotate and transport developer inside the development device, and a shaft projecting from a development casing in an axial direction of the developer bearer; a gear train to transmit a driving force to the developer bearer and the developer conveyance member, the gear train including an idler gear rotatably provided on the shaft projecting from the development casing; a first side plate to determine a distance between a rotary shaft of the image bearer and a rotary shaft of the developer bearer, the first side plate including a first image bearer positioning portion to rotatably support a first axial end portion of the image bearer and a first developer bearer positioning portion to rotatably support a first axial end portion of the developer bearer; and a hollow shaft projecting in the axial direction through the first side plate and inserted into a hollow shaft positioning hole formed in the body of the image forming apparatus, the hollow shaft having a recess formed therein to receive the shaft projecting from the development casing.