Rotating body, cooling apparatus that cools a rotating body, and image forming apparatus that uses a rotating body and a cooling apparatus

摘要

A cooling apparatus cools a rotating body in an image forming apparatus. The cooling apparatus includes a hollow cylindrical rotating body rotating about a longitudinal axis, a cooling section, and a drive source. The cooling section is located outside of the rotating body. The cooling section rotates when the rotating body rotates, and sends air to the rotating body so that the rotating body is cooled by convection of air. The drive source operatively drives the rotating body and the cooling section. The rotating body is provided with a first air-propelling member that takes air into an inner space of the rotating body and a second air-propelling member provided that discharges air from the inner space. The air-propelling member may be a vane that describes a spiral and generally extends along the longitudinal axis.