| 摘要 |
PURPOSE:To eliminate a resonance sound generated by the abrasion of a cleaning blade by constituting a multiple number of oscillation preventers which prevent the resonance sound due to frequency intrinsic to the length inside a cylinder adhered by adhesives. CONSTITUTION:Lead weights 2 are stuck by a double coated adhesive tape 3 as preventers of oscillation intrinsic to the length to the inside of the drum 1. Further, anything other than lead which is relatively heavy in weight can be used as the oscillation preventer. That is, a photosensitive drum 1 is made of aluminum blank pipe, inside this drum 1, lead weights 2 are adhered with the double coasted adhesive tape 3, and the position where the weights 2 are adhered are, for example; two at the one third point and two thirds point and one at the one ninth point responding to the resonance frequency. Thus, the resonance can be completely eliminated. |
