Abstract: A powder transport device includes: a rotation shaft rotatably supported in a container chamber that contains powder; and plural blade members detachably attached to the rotation shaft, the blade members including spiral blades configured to transport the powder in an axial direction of the rotation shaft in response to the rotation shaft rotating.

Abstract: A powder transport device includes: a rotation shaft rotatably supported in a container chamber that contains powder and plural blade members detachably attached to the rotation shaft, the blade members including spiral blades configured to transport the powder in an axial direction of the rotation shaft in response to the rotation shaft rotating.

Abstract: A developer storage level detecting device includes: a main body having a transporting path through which a developer is transported; a developer transporting unit that is disposed to rotate in the transporting path and has a transporting section provided spirally around a rotating shaft; a swingable member that comes in contact with a surface of the developer being transported in the transporting path and swings while following at least a level of the surface of the developer stored; and a detecting unit that detects a swing state of the swingable member, wherein the transporting unit has a non-transporting section without the transporting section, and the swingable member is disposed to swing in the non-transporting section.