THERMODRUCKKOPF, DAFÜR VERWENDETES SUBSTRAT UND VERFAHREN ZUM HERSTELLEN DIESES SUBSTRATS

摘要

A thermal printing head which comprises a substrate (2) having a substantially flat surface and made of an insulating material, a heat generating resistor (3) formed on the substrate (2) for forming a plurality of heat generating dots, patterns of conductive material (5, 6) formed on the substrate (2) in such a manner as to be electrically connected to the heat generating resistor (3) and a driving element mounted on the substrate (2) for selectively activating the heat generating dots for generating heat via the patterns of conductive material (5, 6), wherein the substrate (2) has in its thicker portion a hollow portion (10) extending along the heat generating resistor (3). The present invention also provides a method for producing the substrate (2).