The disclosure relates to a multi-functional printer. The multi-functional printer comprises an automatic document feeder member located in a scanner device and being movable between a unlifted position and a lifted-up position; a pen door located in a printer device and being movable between an open position and a closed position; and a link mechanism positioned between the automatic document feeder member and the pen door, such that when the automatic document feeder member is moved between the unlifted position and the lifted-up position, the pen door moves with the automatic document feeder member to open or close the pen door.