A motor drive device for driving of a plurality of motors in a proper manner, having a first motor, a second motor, and a current controller. The first motor is able to drive at up to a first maximum permissible current of A1. The second motor is able to drive at up to a second maximum permissible current of B1. The power supply supplies up to a maximum permissible supply current of D to the first and second motors. The current controller controls operations of the first and second motors. The maximum permissible supply current of D is set to be less than a sum of A1 and B1. The current controller controls a first current A2 to be supplied to the first motor and a second current B2 to be supplied to the second motor so that a sum of the first and second current A2 and B2 is less than D. The current controller controls the second current B2 to be less than the second maximum permissible current B1.