Patent ID: 9417596
Filing Date: 2016-08-16
CPC Classification: G03G

Claim Text:
1. A drum unit comprising; a first photosensitive drum rotatable about a first rotational axis, the first photosensitive drum including a first drum body having a first photosensitive layer and a first supported portion extending from one end of the first drum body in a first direction along a first rotational axis; a second photosensitive drum rotatable about a second rotational axis, the second photosensitive drum including a second drum body having a second photosensitive layer and a second supported portion extending from one end of the second drum body in a second direction along a second rotational axis of the second photosensitive drum, the first direction being parallel to the second direction, the second photosensitive drum being disposed apart from the first photosensitive drum in an arranged direction perpendicular to the first direction and the second direction; a first side plate disposed apart from the first drum body and the second drum body, the first side plate configured to support each of the first supported portion and the second supported portion; 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 configured to convey the waste toner removed by the first cleaner in the first 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 the waste toner removed by the second cleaner in the second direction; and a waste-toner conveyor unit having a collecting conveyor configured to convey the waste toner conveyed by the first conveyor and the waste toner conveyed by the second conveyor, wherein at least a first portion of the collecting conveyor is disposed between the first side plate and the first drum body and is within a circumference of the first photosensitive drum body projected onto the first side plate, wherein at least a second portion of the collecting conveyor is disposed between the first side plate and the second drum body and is within a circumference of the second photosensitive drum body projected onto the first side plate, wherein the collecting conveyor is disposed below and is overlapped by the first conveyor and the second conveyor, wherein the drum unit is configured to be inserted into and removed from a printer body, and wherein the first side plate is removable from the printer body in a direction perpendicular to the axis of the first photosensitive drum.