Patent ID: 8417158

Claim:
An image forming apparatus comprising: a feed portion that is fed with toner from above; a transport path that includes an inlet through which the toner fed to the feed portion enters, that allows the toner to be transported therethrough, and that is in a cylindrical shape; a transporting member that includes: a rotary shaft provided to extend in the feed portion and the transport path; and a moving portion disposed around the rotary shaft in a helical shape that presses toner with rotation of the rotary shaft to move the toner, and that transports along the transport path the toner fed to the feed portion; and a diameter change position at which the diameter of the moving portion switches from a small diameter to a large diameter, wherein the diameter change portion is located in the feed portion, wherein a part of the rotary shaft of the transporting member is located in the transport path having a larger diameter than a part of the rotary shaft located in the feed portion.