JP2005186397A5 - - Google Patents

Claims (10)

A plurality of nozzles arranged to eject ink and a plurality of actuators;
  Among the plurality of actuators, a space sandwiched between adjacent actuators is configured to communicate with the corresponding nozzle, and has a pair of electrodes on a surface facing the space of the actuator and a surface on the opposite side. Head,
  A drive signal generator for generating a plurality of drive signals for driving the actuator with different waveforms; and
  An inkjet recording apparatus comprising: a drive signal selection unit that selects a drive signal for each of the plurality of actuators from the plurality of drive signals generated by the drive signal generation unit.   2. The ink jet recording apparatus according to claim 1, wherein a plurality of drive signals generated with different waveforms by the drive signal generator have different voltages.   The drive signal generator generates, as drive signals, an ON signal composed of a first pulse and an OFF signal composed of a second pulse that rises when the first pulse falls, with different waveforms. The ink jet recording apparatus according to claim 1 or 2.   The drive signal generator generates a plurality of ON signals consisting of the first pulse with different waveforms as drive signals, and one OFF signal consisting of the second pulse that rises when the first pulse falls. The inkjet recording apparatus according to claim 1, wherein the inkjet recording apparatus is generated.   Of the pair of electrodes, the selected drive signal is supplied to each electrode formed on the surface of the actuator facing the space communicating with the nozzle, and the drive signal is supplied to the electrode formed on the opposite surface. The inkjet recording apparatus according to claim 3, wherein the predetermined OFF signal generated by the generation unit is supplied.   The drive signal selection unit selects and supplies the ON signal as a drive signal to an electrode formed on a surface facing a space communicating with a nozzle that ejects ink of the actuator, and a nozzle that does not eject ink of the actuator 6. The ink jet recording apparatus according to claim 5, wherein the OFF signal is selected and supplied as a drive signal to an electrode formed on a surface facing a space communicating with the head.   The inkjet recording apparatus according to claim 1, wherein every other space between the adjacent actuators is configured to communicate with the nozzles.   The ink jet recording apparatus according to claim 7, wherein the electrode formed on the opposite surface is connected to a common electrode.   The inkjet recording apparatus according to claim 1, wherein the drive signal generation unit includes a plurality of drive waveform generation circuits that generate different waveforms.   A storage unit for storing drive waveform selection data for selecting a drive signal of the actuator;
  And a controller that controls the drive signal selection unit based on image data and the drive waveform selection data, and operates each of the plurality of actuators with a drive signal set for each nozzle. Item 10. The ink jet recording apparatus according to any one of Items 1 to 9.