Patent ID: 8045889
Filing Date: 2011-10-25
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an apparatus body that includes a drive source; a driven member that is detachably attachable to the apparatus body; a first transmission member that is provided in the apparatus body, that includes a base rotatable around a rotation axis, and that transmits drive force from the drive source to the driven member; and a second transmission member that is provided in the driven member, that includes a base rotatable around the rotation axis, and that transmits drive force from the first transmission member to the driven member, any one of the first transmission member and the second transmission member including a projection that projects from the base of the one of the transmission members, the other transmission member including a receiving port in the base of the other transmission member, the receiving port receiving the projection, the receiving port being allowed to receive the projection when a rotation angle between the second transmission member and the first transmission member is an angle set in advance while not being allowed to receive the projection when the rotation angle is out of the angle set in advance, at the time of mounting the driven member on the apparatus body, wherein the projection is singularly provided so as to be eccentric to the rotation axis, and the receiving port is singularly provided so as to be eccentric to the rotation axis.