Belt drive device and image forming apparatus including same

Abstract

A belt drive device includes an endless belt, a plurality of tension rollers on which the belt is rotatably tensioned and a belt cleaning device. The belt cleaning device includes a cleaning blade and an opposite roller. The cleaning blade makes contact with the outer circumferential surface of the belt to remove a foreign substance adhered to the belt. The opposite roller is arranged in contact with the inner circumferential surface of the belt opposite the cleaning blade through the belt. The opposite roller includes a cover layer arranged on an outer circumferential surface, the surface resistance value of the cover layer when a voltage of 100V is applied is equal to or greater than 10 to the 10th power (Ω) and the Asker A hardness of the cover layer is equal to or greater than 60° and equal to or less than 90°.

Dependencies are inferred from the claim text.