Cleaning device and image forming apparatus

An image forming apparatus comprising:

• a pre-cleaning section and a first cleaning section,
• the pre-cleaning section including
• a pre-cleaning roller configured to remove toner remaining on a transfer belt, and
• a pre-cleaning voltage applying section configured to apply a voltage having a polarity opposite to a regular charging polarity of the toner to the pre-cleaning roller such that the toner having the regular charging polarity electrostatically attaches to the pre-cleaning roller from the transfer belt, and that the toner passing over the pre-cleaning roller is oppositely charged to the polarity opposite to the regular charging polarity,
• the first cleaning section including
• a first cleaning roller disposed on a downstream side of the pre-cleaning roller in a traveling direction of the transfer belt, the first cleaning roller being configured to remove toner remaining on the transfer belt, and
• a first cleaning voltage applying section configured to apply a voltage having a polarity identical to the regular charging polarity of the toner to the first cleaning roller prior to removing toner from the transfer belt such that the toner having the polarity opposite to the regular charging polarity attaches to the first cleaning roller from the transfer belt when a predetermined cleaning condition is not satisfied, the first cleaning voltage applying section being configured to apply a voltage having the polarity opposite to the regular charging polarity of the toner to the first cleaning roller prior to removing toner from the transfer belt such that the toner having the polarity identical to the regular charging polarity electrostatically attaches to the first cleaning roller from the transfer belt when the predetermined cleaning condition is satisfied.