Patent ID: 9199453
Filing Date: 2015-12-01
Classification: B41J

Abstract:
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 deformable 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 adjacent ink chambers which are arranged in parallel so as to be separated from each other by mutually adjacent partitions, the controller sets electrodes of middle ink chambers other than ink chambers located on both sides of the middle ink chambers to a high impedance state.