A thermal head in which battery effect-induced corrosion can be retarded
while maintaining excellent anti-static capability in an upper conductive
protective film, is provided. The thermal head includes a substrate, a
heater element arranged on the surface of the substrate, an electrode
layer connected to the heater element, and an upper conductive protective
film for covering part of the electrode layer. In the thermal head,
between the electrode layer and the upper conductive protective film is
interposed a lower conductive protective film which is higher in specific
resistance than the upper conductive protective film.