| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming device achieving favorable gear sliding performance without enlarging the diameter of a resin shaft in a gear sliding range even in tightening a screw, in constitution using the resin shaft for a gear shaft, in which a part is fastened to the resin shaft while self-tapping. <P>SOLUTION: This image forming device comprises a constitution in which the resin shaft 18 is used for the gear shaft to be incorporated with a resin part, and in which the part is fastened to the resin shaft 18 by the screw 20 that is fastened while self-tapping. Hole diameter of a hole 18b in the resin shaft 18 to which the screw 20 is driven is set to be larger than outer diameter of the screw 20 in the gear sliding range, and in such size that the screw can be fastened on the depth side of the gear sliding range. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
