Patent ID: 7248274

Claim:
A thermal head comprising: a head substrate including a plurality of exothermic bodies which generate heat when electricity is supplied thereto, a common electrode connected with first ends of the exothermic bodies, and a plurality of independent electrodes connected with corresponding second ends of the exothermic bodies; a printed circuit board including a plurality of driving elements for controlling the electricity supplied to the exothermic bodies on the head substrate; and a heat sink on which the head substrate and the printed circuit board are disposed such that an end surface of the head substrate and an end surface of the printed circuit board adjoin each other, wherein the plurality of independent electrodes and the plurality of driving elements are correspondingly wire-connected with each other across a gap formed between the adjoining end surfaces of the head substrate and the printed circuit board so as to define a wire-connection unit, wherein the wire-connection unit is sealed with a resin material, and wherein the printed circuit board and the heat sink have an adhesive layer partially disposed therebetween such that a space is provided between the printed circuit board and the heat sink, the space communicating with the outside of the thermal head and with the gap between the adjoining end surfaces of the head substrate and the printed circuit board.