| 主权项 |
1. A recovery unit configured to recover a waste developer conveyed from an image forming apparatus, comprising:
a reserve portion having a tubular shape, comprising a spiral protrusion row on an outer peripheral surface, and configured to reserve the waste developer in a reserve space defined inside the spiral protrusion row of the reserve portion; a container portion having a tubular shape and a first opening on a side wall, and configured to incorporate the reserve portion; and a driving transmitter coupled to the reserve portion, and configured to transmit driving force to rotate the reserve portion about a rotational shaft, wherein an external diameter of the reserve portion including the protrusion row is same as an internal diameter of the container portion, and wherein, as the reserve portion rotates about the rotational shaft, the waste developer conveyed through the first opening is conveyed upward by the protrusion row in a conveyance path defined by the protrusion row, the outer peripheral surface of the reserve portion, and an inner peripheral surface of the container portion, and is contained in the reserve space through a second opening formed in an upper portion of the reserve portion. |
