Patent ID: 7357470

Claim:
A printing control system for controlling a print-head, comprising: a motor controller for calculating a moving speed of the print-head upon reaching a predetermined printing position; a time-delaying generator, coupled to the motor controller, comprising an arithmetic logic unit (ALU) for generating a delay time according to a predetermined rule described by the following formula: T d = L V p ⁢ ( V h V x - 1 ) , where T d represents the delay time, L represents the distance between the print-head and a printing paper, V p represents a jetting speed of the ink, V h represents the maximum moving speed of the print-head, and V x represents the moving speed that the print-head reaches at the predetermined printing position; and a timer, coupled to the time-delaying generator, for starting to calculate a printing time after the print-head reaches the predetermined printing position and outputting a printing signal to control the print-head to jet out an ink drop when the printing time equals the delay time.