| 摘要 |
PURPOSE:To make the printing pitch of each label constant and to eliminate the scattering in he printing pitch, by providing a power detection circuit and a timer for controlling the drivign time of a label feed motor and by performing control in connection with the voltage wave form of an input AC power source. CONSTITUTION:When printing on the first line 2 of a label 1 is finished, a field pulse signal is supplied from a CPU8 to set a flip-flop 19. Another flip-flop 22 is coupled to the output of the former flip-flop 19. A terminal C of the flip-flop 22 is connected to a power detection circuit 24 which detects the time when the output wave of an input AC power source 6 becomes OV. When a detection signal C from the power detection circuit 24 is applied to the flip-flop 22 in the set state of the other flip-flop 19, a relay 21 is actuated to rotate a motor to feed the label until a timer 12 becomes a level ''L''. |
