Printer with a motor controlled by chopping means

A printer which has a printing hammer, a printing ribbon interposed between the printing hammer and a printing medium, a printing medium feed mechanism including a platen movable with the printing medium thereon, and a printing section including a printing ribbon feed mechanism for feeding the printing ribbon and a hammer actuating mechanism for actuating the printing hammer, said printer comprising:

• a single DC motor supplied with a predetermined supply voltage;
• transmission means for selectively connecting the motor to the printing medium feed mechanism and the printing section, said transmission means including electromagnetic means operative selectively to transmit the driving force of the motor to the printing section and the printing medium feed mechanism, whereby said printing section and the printing medium feed mechanism are operated respectively;
• chopping means operative chop the predetermined supply voltage so as to reduce the driving force and rotating speed of the motor;
• signal generating means for generating a printing signal commanding the operation of the printing section and a feed signal commanding the operation of the printing medium feed mechanism;
• and
• control means responsive to the signals generated by the signal generating means for controlling the chopping means and the electromagnetic means, said control means rendering the printing section through the electromagnetic means operative and the chopping means and the printing medium feed mechanism inoperative when the signal generating means generates the printing signal, and rendering the chopping means and the printing medium fee mechanism through the eletromagnetic means operative and the printing section inoperative when the signal generating means generates the feed signal.