Toner container and image forming apparatus

A toner container comprising:

• a rotatable container body, the container body including:
• an opening portion at a first end, which is opposite a second end, in a rotation axis direction;
• and
• a plurality of projections on an inner circumferential surface of the container body, each protruding inwardly from an outer circumferential surface of the container body and having a slope inclined with respect to the rotation axis direction,
• wherein the plurality of projections are disposed such that, out of two adjacent projections in the rotation axis direction, one projection of the two adjacent projections that is closer to the first end of the container body in the rotation axis direction overlaps the other projection of the two adjacent projections that is closer to the second end of the container body in the rotation axis direction, in an area of an end of the one projection closer to the second end and an area of an end of the other projection closer to the first end in the rotation axis direction, and
• wherein each of the plurality of projections have a concave shape from the outer circumferential surface toward the inner circumferential surface of the container body,. and ends of the plurality of projections overlap each other without gaps.