Powder container and image forming apparatus

A powder container comprising a container body configured to store powder, the container body including an inner peripheral surface of a spiral shape and being configured to rotate around a longitudinal axis to convey the powder by the spiral shape in one direction,

• wherein a cross section of the inner peripheral surface passing through the longitudinal axis in a direction parallel to the longitudinal direction of the longitudinal axis does not include a straight line parallel to the longitudinal axis.

A powder container comprising a container body configured to store powder, the container body including an inner peripheral surface of a spiral shape and being configured to rotate around a longitudinal axis to convey the powder by the spiral shape in one direction,

• the inner peripheral surface having a substantially polygonal shape having rounded corners or a shape in which sides of the substantially polygonal shape are recessed, in cross section orthogonal to a longitudinal direction of the longitudinal axis at a predetermined position,
• the inner peripheral surface having a region in which the cross-sectional shape at a position shifted from the predetermined position by a predetermined amount within one pitch of the spiral shape in the longitudinal direction is a shape obtained by rotating, around the longitudinal axis, the substantially polygonal shape having the rounded corners or the shape in which the sides of the substantially polygonal shape are recessed,
• wherein a cross section of the inner peripheral surface passing through the longitudinal axis in a direction parallel to the longitudinal direction does not include a straight line parallel to the longitudinal axis.