END-FACE TYPE THERMAL HEAD

摘要

PURPOSE:To improve the straightness and flatness of a heat generating body train by providing a step portion thin at the end section made up of the end face of a heat generating body substrate on the opposite side of the surface thereof for forming a heat generating body and the end of the surface thereof for forming a picture signal electrode. CONSTITUTION:In a heat generating body substrate 14, a plurality of heat generating bodies 13a are arranged in a row at the end face thereof, a picture signal electrode 14a is formed on the one side thereof while a common electrode 14b on the other side thereof and a step 14c is formed at the end thereof. The substrate is fixed on a base 15 with the step section 14c pressed and grasped by a grasping plate 15a. A semiconductor element 19 for driving the heat generating body 13a is connected between leads of a flexible film carrier 20 and one connection lead block of the semiconductor element is connected to the picture signal electrode 14a while the other lead block to a conductor 16a on a distribution plate 16. Here, the step 14c eliminates the projection of the grasping plate 15a from the electrode forming surface thereby enabling free arrangement of a semiconductor element integrated with a film carrier. Thus, the straightness and the flatness of the heat generating body train can be improved to elevate the printing quality.