An image forming apparatus includes: an image forming apparatus main body, a driven member removably disposed in the image forming apparatus main body, a rotary driver that rotates by current flowing, and after the blockage of the current flowing, continuously rotates due to an inertial force, a coupling part that has a driving-side member and a driven-side member, wherein when the driven-side member is mounted to the image forming apparatus main body, the driving-side member and a driven-side member are facing each other, and when the driving-side member and the driven-side member engage each other in the rotating direction, the rotary driver and the driven-side member are coupled to transmit the rotation of the rotary driver to the driven-side member, and a controller that controls so that, when the driven-side member is mounted to the image forming apparatus main body, the current flows to the rotary driver, and after the elapse of a certain period of time the current flow to the rotary driver is blocked.