THERMAL HEAD FOR THERMAL RECORDING

摘要

PURPOSE:To elevate the productivity of a wear resistant protective film while enabling a higher assembly workability with a smaller width of a heat generating body substrate by leading out common electrodes extending them to an external connection electrode section through two end faces and one flat surface. CONSTITUTION:An external connection electrodes 45f of a heat generating substrate 45 are led out at intervals of fixed number of driving semiconductor elements 46 while common electrodes 45c are led out at the same pitch and two end faces and the back are led out of one end of heat generating bodies 45b being extended at an overall pattern. The common electrode section can be reduced sufficiently in the resistance value and the use of a film lead 52 only allow it to be welded under pressure in package thereby improving the workability. The width of the substrate can be reduced by arranging the common electrodes 45c around the back-side, which permits the formation of all of wear resistant protective films 45e on the side of the common electrodes thereby improving the productivity.