| 摘要 |
PURPOSE:To enable a high grade of printing by selecting the resistance value of a heating resistor provided corresponding to a plurality of orifices discharging liquid drops so as to keep the volume of the liquid drop discharged constant regardless of the position of the orifice. CONSTITUTION:A number of heating resistors 2-1-2-n are arranged on a substrate 1 through an insulation layer 9 and a grooved plates 4 with slot-like patterns 3-1-3-n serving as discharge orifice is provided monolithically thereon to construct a nozzle head. The heating resistor 2-i is fed with a pulse flow to generate heat by which bubbles are generated in an ink passage and ink drops are discharged at the tip of a nozzle 14-i. In an ink head of such a type, the resistance value of the 2-i is adjusted so as to keep the volume of ink drops discharged constant regardless of the position of the nozzle. For example, when the head is used vertically, the lower resistance value is increased gradually. |
