Driving-transmitter and process cartridge

摘要

A driving-force transmitter and a process cartridge. The process cartridge has a photosensitive drum and the driving-force transmitter mounted on the end of the photosensitive drum. The driving-force transmitter having a fitting part and multiple protrusions protruding from an end surface of the fitting part. The multiple protrusions are distributed equiangularly on a circle which is in the end surface of the fitting part. The center of the circle is on the axis of the fitting part. There is an engaging-part on the farthest end of each protrusion from the axis of the fitting part. An anti-separating groove is provided on the engaging-part.