| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-costed development device.SOLUTION: A development device comprises: a developer storage section that stores a developer; and developer agitation means that rotates in the developer storage section to agitate the developer. The developer agitation means includes a plurality of collection agitation wings provided in a direction crossing an axis direction of the developer agitation means. A plurality of agitation wing sections, in which adjacent two collection agitation wings in an axial direction of the developer agitation means make a set, are provided in a state where the agitation wing sections are deviated with respect to a circumferential direction of the developer agitation means and a long-side direction thereof. The two adjacent collection agitation wings consisting of the agitation wing sections are provided so that the two adjacent collection agitation wings gradually get wider with respect to a rotation direction of the developer agitation means.SELECTED DRAWING: Figure 3 |
