Printing control method applied to printing apparatus and related printing apparatus

A printing apparatus for printing on a plurality of print media, the print media with a plurality of intervals therebetween, comprising:

• a printing module, for printing on the print media;
• a sensing module, for generating a sensed signal;
• and
• a printing controlling module, coupled to the printing module and the sensing module and configured for referring to the sensed signal to determine a starting reference point of printing for a print medium, thereby controlling the printing module to print, the printing controlling module performing steps of :
• generating a predictive interval position according to a interval reference position and an period average of an average interval corresponding to a single print medium and an average interval corresponding to a single interval;
• calculating a difference between a measured interval position and the predictive interval position;
• determining whether the difference is greater than a threshold value;
• performing a compensation operation to generate an error compensation value and adjusting the interval reference position to update the interval reference position according to the error compensation value if the difference is not greater than the threshold value;
• and
• updating the predictive interval position according to the updated interval reference position to determine the starting point of printing, thereby to control the printing apparatus to print on the print medium.