Device for and method of coupling shafts, image formation apparatus, process cartridge, and belt unit

摘要

A shaft coupling device for coupling a first shaft and a second shaft together includes a grip unit to be attached to the first shaft and including a grip portion configured to grip the second shaft, the grip portion having an end with notches of a length being parallel with an axial direction of the first shaft. The shaft coupling device also includes a grip force acting unit to be attached to the second shaft and configured to cause a grip force for gripping the second shaft to act on the grip portion by moving the grip portion in a radial direction of the second shaft.