A developer container includes a developer containing part that has an cylindrical hollow shape inside and contains developer therein; and an agitation member that is elastic and rotatably provided inside the developer containing part, rotating around a rotation axis that is a center of the cylindrical hollow shape, having at least a side edge extending in the rotation axis. These problems do not always occur but depend on the distance between the end-user location and the central location, and the type of network termination, and result in the impossibility for the end-user to make voice calls or to send data. Additionally, a blister packaging production line may include an unmarked supply of material backing for blister packaging, a printer for selectively printing on the material and a shaping device for forming recesses in the material that will receive items being blister packaged. According to the present invention, a defect wherein a pattern unit of a storage node contact pattern is not regularly opened on a wafer, or a defect wherein the pattern units are bridged to each other can be prevented from occurring. The anode includes an internal thread hole to which the external thread portion of the conductive anode shaft is screwed.