| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drum unit capable of achieving reduction of manufacture cost and space saving; and to provide an image forming apparatus mounted with the drum unit. <P>SOLUTION: The drum unit includes a photoreceptor drum (18) which is driven to form a toner image on an image forming surface (76), a cleaning member (52) which scrapes residual toner from the image forming surface, and a toner collection part (80) which collects the scraped residual toner from a casing (81) to a collecting container (84). The toner collection part includes a screw (86) conveying the residual toner in the casing to the collecting container, a bush (90) installed in the casing and supporting one end side (87) of the screw so as to be freely rotatable, and a collecting shutter (92) configured to open/close a toner conveyance path (82) between the casing and the collecting container and having a bearing part (96) supporting the other end side (88) of the screw so as to be freely rotatable. <P>COPYRIGHT: (C)2011,JPO&INPIT |
