Patent ID: 6464315
Filing Date: 2002-10-15
Classification: B41J

Abstract:
An ink jet recording apparatus comprising:a recording head including a piezoelectric actuator for varying the volume of a pressure generating chamber by the deformation thereof to eject an ink drop from a nozzle communicating with the pressure generating chamber; and a drive signal generator for supplying a drive signal supplied to the piezoelectric actuator to deform the same in accordance with the potential of the signal, the drive signal including: a pull-in element for varying the potential of the drive signal such that the pressure generating chamber is expanded to pull in a meniscus of the ink in the nozzle thereto; a first ejection element for varying the potential of the drive signal such that the expanded pressure generating chamber is partly contracted; and a second ejection element for varying the potential of the drive signal such that the contracted pressure generating chamber is expanded again to eject the ink drop from the nozzle.