Toner conveying device and image forming apparatus including the same

摘要

A toner conveying device (30) of the present disclosure includes a conveying screw (35), a toner conveying pipe (31), and a plurality of convex portions that are formed on an inner wall surface of the toner conveying pipe (31). The conveying screw (35) has a rotary shaft (35b) and a conveying vane (35a) that is formed on an outer peripheral surface of the rotary shaft (35b). The toner conveying pipe (31) has a circular section, and the conveying screw (35) is rotatably disposed inside the toner conveying pipe (31). Each of the convex portions is formed within an area defined by half the circumference along the inner wall surface of the toner conveying pipe (31) and supports the conveying screw (35) so that an axial center of the rotary shaft (35b) substantially coincides with a center axis of the toner conveying pipe (31).