A driving device includes a motor; a stay supporting the motor; a gear configured to receive a driving force from the motor; and a supporting shaft rotatably supporting the gear, the supporting shaft being supported by the stay. The supporting shaft stands at a side of the stay opposite from a side thereof where the stay supports the motor. The stay supports the motor in a first region and supports the supporting shaft in a second region offset from the first region in a direction of being away from the motor.