| 主权项 |
1. A belt cleaner which cleans a conveyance belt of a conveyance unit, the conveyance unit including a support roller, a drive roller located opposite to the support roller, two tension rollers located below the support roller and the drive roller, the conveyance belt having an outer peripheral surface and an inner peripheral surface opposite to the outer peripheral surface and wound to surround the support roller, the drive roller, and the two tension rollers to support a recording medium on the outer peripheral surface thereof between the support roller and the drive roller, and a drive section that rotates the drive roller to drive the conveyance belt in a first direction and a second direction opposite to the first direction, the two tension rollers being located opposite to each other with a space left, the belt cleaner comprising:
a lifting unit configured to lift up and down the conveyance unit; a cleaning member configured to clean the outer peripheral surface of the conveyance belt; and a belt controller configured to control the drive section, wherein the lifting unit moves the conveyance unit downward to a belt cleaning position when the cleaning member cleans the outer peripheral surface of the conveyance belt, upon the conveyance unit reaching the belt cleaning position, the cleaning member is in press contact with the outer peripheral surface of the conveyance belt between the drive roller and one of the tension rollers that is closer to the drive roller, and the belt controller drives the conveyance belt in the first direction in conveyance of the recording medium and drives the conveyance belt in the second direction when the cleaning member is in press contact with the outer peripheral surface of the conveyance belt. |
