摘要 |
An image forming apparatus of the present invention includes a charging device (30) including a charge roller (14) formed with annular grooves (64) at opposite end portions thereof and configured to charge an image carrier. Annular gap forming members (63a,63b) each are fitted in the annular grooves for forming a gap between the charge roller and the image carrier. To buffer thickness variations the gap forming members may each have an area of 1.0 x 10<-6> m<2> to 3.0 x 10<-6> m<2> in a section containing the axis (O) of the charge roller (14), or the annular grooves (64) may each be deeper at their opposite end portions in axial direction of the charge roller (14) than inbetween, or the annular gap forming members (63a,63b), if cut from one tube, are twisted against each other. <IMAGE> |