Patent ID: 7680433
Filing Date: 2010-03-16
Classification: G03G

Abstract:
1. A process cartridge that is detachable from an image forming apparatus body, comprising: an image carrier; a developing device; a first casing for supporting at least the image carrier; and a second casing for supporting at least the developing device, wherein the first casing and the second casing are freely combined in a rotatable manner as a coupling pin is inserted into a first insertion hole formed in the first casing and a second insertion hole formed in the second casing, and an engaging means that engages the coupling pin with at least one of the first insertion holes and the second insertion hole by snap-fitting is disposed in the first casing or the second casing and in the coupling pin; wherein one of: the engaging means has a convex portion disposed in the coupling pin that extends around at least a majority of an external wall of the coupling pin, and a concave portion disposed in the first casing or the second casing; and the engaging means has a concave portion disposed in the coupling pin that extends around at least the majority of the external wall of the coupling pin, and a convex portion disposed in the first casing or the second casing.