Patent ID: 7457567

Claim:
An image forming apparatus, comprising: an image carrier, adapted such that an electrostatic latent image is formed thereon; a rotary member, having a plurality of loading sections each of which is adapted to accommodate a developing device which is operable to develop the electrostatic latent image; and a motor, operable to rotate the rotary member so that each of the loading sections is sequentially opposed to the image carrier, and operable to exert a detent torque when no power is supplied thereto; wherein: a home position is defined, in a case where only one of the loading sections accommodates the developing device, such that the one of the loading sections is placed in a position lower than any other loading sections; the motor rotates the rotary member to the home position at least when the development of the electrostatic latent image is not performed; and the rotary member is retained in the home position with the detent torque exerted by the motor.