| 摘要 |
PURPOSE:To effectively discharge dusts, bubbles in an ink jet head. CONSTITUTION:In an ink jet head having a plurality of printing nozzles 2 arranged at respective pixel densities to communicate directly with a common ink liquid chamber 1 and discharging energy applying means 3 respectively provided in each nozzles 2, dummy nozzles 4 for communicating with the chamber 1 not to print a matter in which a channel resistance is smaller than the nozzle 2 are provided at both ends of the nozzle 2 group. |
