Patent ID: 8036567

Claim:
An image forming apparatus comprising: an endless belt configured to be rotated; an image forming device configured to form an image on a recording medium which is fed on the endless belt; a cleaning roller configured to be rotated in a predetermined direction and to clean the endless belt; a pair of registration rollers configured to be rotated in a recording medium feeding direction and to feed a recording medium toward the image forming device; a motor configured to rotate in a first direction and a second direction opposite from the first direction and generate a driving force; a first gear mechanism configured to transmit the driving force of the motor to the cleaning roller and rotate the cleaning roller in the predetermined direction upon rotation of the motor in the first direction, the first gear mechanism being configured not to transmit the driving force of the motor to the cleaning roller upon rotation of the motor in the second direction; a second gear mechanism configured to transmit the driving force of the motor to the cleaning roller and rotate the cleaning roller in the predetermined direction upon rotation of the motor in the second direction, the second gear mechanism being configured not to transmit the driving force of the motor to the cleaning roller upon rotation of the motor in the first direction; and a third gear mechanism configured to transmit the driving force of the motor to the registration rollers and rotate the registration rollers in the recording medium feeding direction upon rotation of the motor in the first direction, the third gear mechanism being configured not to transmit the driving force of the motor to the registration rollers upon rotation of the motor in the second direction.