| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a thermal printer capable of performing optimum dynamic divisional driving corresponding to a resistance of a heating element of a thermal head and a capacity of a power source. SOLUTION: There is disclosed a thermal printer wherein a plurality of heating elements (R1-Rn) of the thermal head (20) are selectively energized to perform desired printing on a printing paper, which is fed to the thermal head (20) through a platen (10) which is rotated by a driving force of a paper feed motor (M). The thermal printer comprises at least a resistance measuring means (a resistance detection circuit S) for measuring each of resistance values of the heating elements, an average calculating means (CPU 100) for calculating an average of the resistance values measured by the resistance measuring means, and control means (CPU 100 and a predetermined program) that determine the optimum divisional number of the thermal head based on the average resistance of the heating elements calculated by the average calculating means and controls the currents to be applied to the heating elements.</p> |
