| 摘要 |
PURPOSE:To prevent a toner from adhering and being accumulated in a duct and also to prevent a toner cloud from leaking to the outside of a cleaning device, by a small wind flow, by providing an impeller extending over almost overall length of a duct so as to be freely rotatable in the duct. CONSTITUTION:Plural impellers 15 having the almost same length as a dust 14 and extending over its overall length l are provided so as to be freely rotatable in the duct 14, and its one end and the other end are supported by the side wall for closing one end of the duct and a supporting member 16 provided on the opening side, through bearings 17, 17', respectively. An admission port to the duct 14 of a flow-course 6 for making the duct communicate with a housing 13 is opened in the section connecting direction of the duct 14, and the impeller 15 is made so as to be light in weight so that it is rotated by a small wind flow. According to such a constitution, when toner mixing air flows into the duct 14 from the housing 3, the impeller 15 is rotated by its wind pressure, and a toner which is about to be accumulated in the duct 14 is scooped up by the impeller 15, becomes like a cloud again, gets on an air current and is discharged to an exhaust hose side. |
