Patent ID: 7660546

Claim:
A cleaning device that cleans a transfer sheet conveyance belt, wherein a toner image of an image carrier formed by an image forming section is transferred onto a transfer sheet while the transfer sheet is placed on and conveyed by the transfer sheet conveyance belt, the cleaning device comprising: (a) a first brush roll rotating in contact with the surface of the transfer sheet conveyance belt, the first brush roll being provided with a voltage with a polarity reverse to a charging polarity of toner particles; and (b) a second brush roll arranged downstream of the first brush roll in a moving direction of the transfer sheet conveyance belt and rotating in contact with the surface of the transfer sheet conveyance belt, the second brush roll being provided with a voltage with the same polarity as the charging polarity of the toner particles; and (c) wherein resistance value for the second brush roll is lower than that for the first brush roll.