| 摘要 |
PURPOSE:To facilitate high-density wiring and make it possible to omit a step and to achieve full-multiple orifice formation by providing an electro-thermal converter as a part of each of partition walls for defining liquid passages, and disposing discrete electrodes and a common electrodes to be connected to the converters on the side of a substrate and on the side opposite to the substrate. CONSTITUTION:A pair of heat generating resistors 5 provided for causing each of partition walls for defining liquid passages 4 to be entirely or patly an electro-thermal converter are erected oppositely to each other, on both sides of the liquid passage 4 in the vicinity of an orifice 3. Discrete electrodes 6 are provided on the upper side of a substrate 1, and are electrically connected respectively to the heat generating resistors 5, whereas a common electrode 7 is provided along the lower side of an orifice plate 2 in an area covering the heat generating resistors 5 provided respectively along the liquid passages 4 adjacent to each other. By this method it is possible to omit the step of providing the electro-thermal converters by a thin film forming technique. Since wiring can be simplified and, particularly, the discrete and common electrodes 6, 7 can be provided with sufficient widths, it is possible to restrict wiring resistance to a low value, and to restrain an electrical loss. |
