DRIVING DEVICE AND DRIVING METHOD OF INKJET HEAD

摘要

There is provided a controller which sets electrodes which are respectively disposed on wall surfaces of a plurality of ink chambers which are arranged in parallel so as to be separated from each other by partitions made of a piezoelectric material, to a high impedance state. In addition, at a timing when an identical potential is applied to the electrodes of at least three ink chambers which are arranged in parallel so as to be separated from each other by mutually adjacent partitions, the controller sets electrodes of ink chambers other than ink chambers located on both sides to a high impedance state.

主权项

1. A driving device of an inkjet head in which electrodes are respectively disposed on wall surfaces of a plurality of ink chambers which are arranged in parallel so as to be separated from each other by partitions made of a piezoelectric material, a potential difference is given to the electrodes of two adjacent ink chambers so as to deform the partitions interposed between the electrodes, and ink is ejected from a nozzle which communicates with the ink chamber having the deformed partitions as wall surfaces, the device comprising:
a controller that sets the electrodes to a high impedance state, wherein, at a timing when an identical potential is applied to the electrodes of at least three ink chambers which are arranged in parallel so as to be separated from each other by mutually adjacent partitions, the controller sets electrodes of ink chambers other than ink chambers located on both sides to a high impedance state.