DEVELOPING CARTRIDGE

摘要

Disclosed is a developer cartridge. The developer cartridge comprises a cartridge box which comprises a toner compartment and a toner outlet; a stirring member which is rotationally supported inside the toner compartment; a developing roller which is rotationally supported on the toner outlet; a gear set which is installed on the exterior wall of the cartridge box which receives driving force and drives the stirring member and the developing roller; a rotation member (4) which is rotationally installed on the exterior wall of the cartridge box and is provided with a clutch gear and a coaxial cam (41) wherein the clutch gear has a small-diameter portion (43) which is clearance-fitted with one gear top of the gear set and a large-diameter portion (42) which is interference-fitted with the gear top and wherein the large-diameter portion (42) is provided with an elastic friction layer along the circumference and the cam (41) is in a staggered phase with the clutch gear; a contact member (5) which is rotationally installed on the exterior wall of the cartridge box and has a contact end (51) for contacting the cam (41) and a trigger end (52); and an elastic member (6) which is installed between the cartridge box and the contact member (5) and forces the contact end (51) to contact with the cam (41).