Drum Unit

摘要

A drum unit includes a photosensitive drum, a side plate, a cleaning unit, a waste-toner conveyor unit. The photosensitive drum has a first drum body and a second drum body, each having a photosensitive layer and a supported portion extending from one end of the drum body in a first direction along a rotational axis of the photosensitive drum. The side plate supports the supported portions. The cleaning unit has cleaners and conveyors corresponding to the drum bodies so as to remove waste toner from the photosensitive drums and convey the waste toner removed by the cleaners in the first direction. The waste-toner conveyor unit has a collecting conveyor configured to convey the waste toner conveyed by the. The collecting conveyor is disposed between the side plate and the drum bodies. The collecting conveyor is disposed below the first conveyor.

主权项

1. An image forming apparatus comprising:
a printer body including a waste-toner storage portion; and a process unit movable between a first position, at which the process unit is positioned inside the printer body, and a second position, at which the process unit is positioned outside the printer body, the process unit comprising;
a first photosensitive drum rotatable about a rotational axis, the first photosensitive drum including a first drum body having a first photosensitive layer and a first flange member extending from one end of the first drum body in an axial direction along the rotational axis of the first photosensitive drum;a second photosensitive drum rotatable about a rotational axis, the second photosensitive drum including a second drum body having a second photosensitive layer and a second flange member extending from one end of the second drum body in the axial direction;a first side plate supporting the first photosensitive drum and the second photosensitive drum;a second side plate supporting the first photosensitive drum and the second photosensitive drum, the first drum body of the first photosensitive drum and the second drum body of the second photosensitive drum being disposed between the first side plate and the second side plate in the axial direction, the first side plate including an upper end and a lower end;a first cleaning unit having a first cleaner and a first conveyor, the first cleaner being configured to remove waste toner from the first photosensitive drum, the first conveyor being configured to convey waste toner removed by the first cleaner in the axial direction;a second cleaning unit having a second cleaner and a second conveyor, the second cleaner being configured to remove waste toner from the second photosensitive drum, the second conveyor being configured to convey waste toner removed by the second cleaner in the axial direction; anda waste-toner conveyor unit including a conveyor tube for conveying waste toner conveyed by the first conveyor and waste toner conveyed by the second conveyor toward the waste-toner storage portion, wherein the conveyor tube of the waste-toner conveyor unit is disposed between the first side plate and the first drum body, wherein the conveyor tube of the waste-toner conveyor unit is disposed below the rotational axis of the first photosensitive drum, and wherein the conveyor tube of the waste-toner conveyor unit is disposed above the lower end of the first side plate.