US Patent 7319474 Electronics apparatus and image forming apparatus

In an image forming apparatus including a thermal head attached to a supporting body having a heat release function, a power supply circuit board that is disposed inside a casing and supplies electrical power to the thermal head, and a cooling fan that takes in the outside air for cooling the thermal head and the power supply circuit board, on the substrate of the power supply circuit board near the cooling fan provided on the side wall of the casing, a pair of heat sinks that guide cooling air from the cooling fan to the thermal head are implanted opposite each other by being spaced from the thermal head.