INKJET HEAD AND INKJET RECORDING DEVICE

摘要

Provided are an inkjet head and inkjet recording device for reducing the constraints on the type of ink and for easily reducing the amount of ink discharged per discharge without increasing the size of the configuration or complicating the control. The present invention is provided with the following: an ink flow path that has a nozzle and a pressure chamber communicated to the nozzle, and sends ink from an ink chamber to the nozzle; and a pressurization section for changing the pressure applied to the ink in the pressure chamber. The ink flow path has a primary mode natural frequency corresponding to the ink and the entire ink flow path, and a secondary mode natural frequency corresponding to the ink and a part of the ink flow path including the nozzle. The pressurization section changes the pressure applied to the ink for a predetermined duration corresponding to the primary mode natural frequency, and causes a predetermined amount of ink to be discharged in at least one discharge out of timings where ink liquid surface movement pertaining to pressure oscillation of the ink at the secondary mode natural frequency is superimposed onto ink liquid surface movement pertaining to pressure oscillation of the ink at the primary mode natural frequency.