| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable it to make a thermal printing head have a narrow-pitch in the main scan direction and to be miniaturized in the sub scan direction, simply. <P>SOLUTION: A common electrode 16 and an individual electrode 17 which are piled up to an exothermic resistor layer 15 arranged on a support substrate 13 are provided. An opening 20 is formed in a protective sheet 19 which covers both the metal layer 30 forming the individual electrode 17 for turning on electricity to an exothermic part 18 formed in the exothermic resistor layer 15 and the exothermic part 18. A protruding electric connection part 21 which connects to the individual electrode 17 in the opening 20 and prolongs on the protective sheet 19 is provided. The protruding electric connection part 21 prolongs up to the position right above an adjoining metal layer (the individual electrode 17b) on the protective sheet 1 and be connected to a bonding pad 24 of a driving IC 23 on a driving circuit substrate 22 by a bonding wire W. <P>COPYRIGHT: (C)2010,JPO&INPIT |
