An electronic control system may be used to control the steering angle of a vehicle wheel. The anti-marking device comprises a flexible jacket comprised of fluoropolymer to engage the freshly printed substrate as it is transferred over the transfer cylinder, the anti-marking device removably attached with free play to the transfer cylinder. To overcome the leakage current problems, knowing the leakage current of an LPF capacitor is important to implement the correction circuitry. The control unit continues transporting work when both data of the ID information are identical at the same position, and issues an error signal and notifies the ID information of the storing member andor the discharge receiving member, which is the work target of the previously incorporate program, through the alarm signal notifying means when the both are different.