Thermal printer and control method thereof

A thermal printer for performing printing by using a thermal head including a plurality of dots, the thermal printer comprising:

• a controller configured to divide one line of print data into a plurality of data portions, and transfer the plurality of data portions to the thermal head in time division, thereby allowing the thermal head to print the one line of print data;
• and
• a memory storing a data table in which a number of dots to be energized in each of the plurality of data portions is set forth for every number of dots that may be energized for the one line of print data,
• wherein the controller is further configured to extract the number of dots to be energized in each of the plurality of data portions, from the data table stored in the memory, based on a number of dots to be energized for the one line of print data, thereby generating data inclusive of the extracted number as print control data responsive to the print data.

A method for controlling a thermal printer for performing printing by using a thermal head including a plurality of dots, the method comprising:

• dividing one line of print data into a plurality of data portions;
• determining a number of dots to be energized in each of the plurality of data portions based on a predetermined mathematical formula in which x is a number of dots to be energized for the one line of print data and n is a number by which the one line of print data is divided into the data portions, such that the number of dots to be energized is averaged out among the plurality of data portions, thereby generating data inclusive of the determined number as print control data responsive to the print data;
• and
• transferring the plurality of data portions to the thermal head in time division, thereby allowing the thermal head to print the one line of print data based on the print control data.