| 摘要 |
PURPOSE:To satisfactorily inject ink droplets without being influenced from bubbles by cooling an ink liquid chamber and by heating the portion of an ink jet injecting head in the vicinity of the injection port. CONSTITUTION:The ink in the chamber of an injection head is cooled with a cooling element 11 to lower the saturated vacuum pressure. As a result, the bubbles are prevented from being generated so that the ink containing no bubble is supplied to an ink outlet 9. The ink supplied is heated by a heating element 13 so that the ink having preset viscosity and surface tension is injected from the outlet 9. Thus, the ink droplets failing to be influenced from bubbles or the like can be stably injected for the printing purpose. |
