| 摘要 |
PROBLEM TO BE SOLVED: To suppress formation of leftovers in the stepped part on the surface of a protective layer of a thermal head, and to facilitate noise reduction of the thermal head in operating a printing apparatus. SOLUTION: A first heating resistor 13a, a second heating resistor 13b, and a third heating resistor 13c are divided in the sub-scanning direction of the thermal head and are arranged in parallel to the main scanning direction on a glaze layer 12 on a substrate 11. Common electrodes 14 each having comb teeth 14b extending in a comb teeth form in the sub-scanning direction from a base 14a extending in the main scanning direction, and discrete electrodes 15 each in a comb teeth shape are arranged between the comb teeth 14b. A pair of the comb teeth parts 14b and the discrete electrode 15 between them form two heating parts 16a and 16b electrically energized to three heating resistors 13. Heating elements each with a pair of this heating parts 16 are arrayed in an array form in the main scanning direction. COPYRIGHT: (C)2011,JPO&INPIT |
