Patent ID: 8204409

Claim:
An image forming apparatus comprising: a rotation shaft arranged to be rotated by a rotation driving unit; a drive transmitting member arranged to: be attached to the rotation shaft such that the drive transmitting member cannot be rotated relative to the rotation shaft; removably attach a toner bottle thereto; and include a bottle connection portion arranged to transmit a rotation driving force of the rotation shaft to the toner bottle by being connected with a connected portion of the toner bottle such that the bottle connection portion cannot be rotated relative to the connected portion of the toner bottle; a phase detection member attached to the rotation shaft such that the phase detection member cannot be rotated relative to the rotation shaft; a control unit arranged to control the rotation driving unit such that a rotation phase of the phase detection member stops at a prescribed phase at least when attaching the toner bottle to the drive transmitting member and removing the toner bottle from the drive transmitting member; a regulation member arranged to regulate the toner bottle such that a rotation phase of the toner bottle is a prescribed phase when attaching the toner bottle to the drive transmitting member and removing the toner bottle from the drive transmitting member; and a phase selection portion provided on at least any one of the rotation shaft, the phase detection member, and the drive transmitting member, the phase selection portion being arranged to select a rotation phase of the phase selection portion and then be attached after the selection when attaching the phase detection member or the drive transmitting member to the rotation shaft.