Patent ID: 8480318

Claim:
A driving force transmitting device for driving a driven unit, comprising: a first driving unit; a second driving unit; a driving force-transmitted portion which is attached to the driven unit and to which a driving force of the first driving unit and a driving force of the second driving unit are transmitted; and a controlling unit for separately controlling current input to the first driving unit and the second driving unit, wherein a driving force transmitting portion of the first driving unit and a driving force transmitting portion of the second driving unit transmit the driving forces to the driving force-transmitted portion at different positions of the driving force-transmitted portion; and wherein when the driven unit which is being driven is to be stopped, the controlling unit inputs the current to the first driving unit to drive in a direction reverse to a driving direction while inputting the current to the second driving unit to continue to drive, thereby causing the first driving unit and the second driving unit to stop in a state in which the driving forces of the first driving unit and the second driving unit are balanced with each other.