| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermal head having uniform printing density.SOLUTION: Among a plurality of second extension parts, one second extension part is provided between a pair of first extension parts among a plurality of first extension parts, and among the two first extension parts for constituting the pair of first extension parts, one is provided between a pair of second extension parts including one second extension part among the plurality of second extension parts, and electric energy consumed by a heating element via the one first extension part for constituting the pair of first extension parts, is less than electric energy consumed by the heating element via the other first extension part, and the one first extension part is smaller in the area of a part uncontributing to heating of the heating element than the other first extension part, or electric energy consumed by the heating element via the one second extension part for constituting the pair of second extension parts, is less than electric energy consumed by the heating element via the other second extension part, and the one second extension part is smaller in the area of the part uncontributing to the heating of the heating element than the other second extension part. |
