| 摘要 |
In a thermal printhead (A), a common wiring portion ( 4 ) is divided into a plurality of blocks (BL) arranged side by side in a primary scanning direction, and voltage is applied to opposite ends of each of the blocks (BL) in the primary scanning direction. A plurality of heating resistance sections ( 3 ) are divided into a plurality of blocks (BL') corresponding to the blocks (BL) of the common wiring portion ( 4 ), and in each of the blocks (BL'), the resistance reduces as proceeding from opposite ends toward the center in the primary scanning direction. Therefore, the adjustment of the resistances of the plurality of heating resistance sections is easy, and the non-uniformity in darkness of print dots is reduced, so that high-quality image printing is possible.
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