| 摘要 |
PROBLEM TO BE SOLVED: To improve the image quality by evening the flight speed of ink droplets regardless of the ink viscosity change. SOLUTION: A driving signal for a pressure generating element includes an expansion element 50 for expanding a pressure generating room, a first hold element 51 for maintaining the expanded state of the pressure generating room an ejection element 52 for ejecting ink droplets, a second hold element 53 for maintaining the contracted state of the pressure generating room, and a damping element 54 for restoring the pressure generating room in the contracted state to the expanded state so that the application time of each element is adjusted based on the detected temperature from a temperature detecting means for evening the flight speed of ink droplets. |
