| 摘要 |
PROBLEM TO BE SOLVED: To prevent adverse effect of accumulated heat by enhancing the heat dissipation performance of a thermal head. SOLUTION: A heating element is covered, on the vicinity thereof, with a protective film 216 covering a part of the first plane 208 of an elongated planar heat resistant substrate 100, the end face 202 of the elongated planar heat resistant substrate 100, and a part of the second plane 212 of the elongated planar heat resistant substrate 100. The first and second planes 208, 212 exposed from the protective film 216 are insulated electrically by a mesh-like insulation film 120 and a heat dissipater 230 for dissipating heat generated from a heater 110 is fixed to the first or second plane 208, 212 through the insulation film 120 and a fluid heat transmission substance 220 spreading into the insulation film 120.
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