| 摘要 |
Provided is a thermal head in which the number of manufacturing processes or the cost does not increase and a heat distribution becomes uniform at the time of supplying electricity, so that a good printing result can be obtained, and in particular a good degree of gloss and image clarity in the printing result can be realized. The thermal head (1) includes a substrate (2); a plurality of driver ICs configured to be arranged in a main scanning direction on the substrate (2); a heater element (6) configured to include a heat storage layer formed on the substrate (2), a heating resistor layer which is made of a plurality of pairs of effective heating portions (4A and 4B) formed on the heat storage layer as a heating resistor, and an electrode layer which is patterned to supply electricity to the heating resistor layer; and a protective layer configured to cover a surface of the heater element (.6), wherein the electrode layer is provided with a folded electrode (8) which connects the pair of the effective heating portions (4A and 4B) at an end thereof in a sub-scanning direction of each pair of the effective heating portions (4A and 4B), a separate electrode (9) which is connected with one effective heating portion (4A) of the pair of the effective heating portions (4A and 4B) at the other end thereof in the sub-scanning direction and connected to a corresponding driver IC, and a common electrode (10) which is connected with the other effective heating portion (4B) of the pair of the effective heating portions (4A and 4B) at the other end thereof in the sub-scanning direction, and wherein the folded electrode (8) is formed by adjusting an area thereof such that a heat distribution of each heating resistor becomes uniform.
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