Patent ID: 6341851
Filing Date: 2002-01-29
Classification: B41J

Abstract:
An ink jet recording apparatus, comprising:a pressure chamber, for accommodating an ink liquid; a nozzle, communicating with the pressure chamber for discharging the ink liquid; and pressure applying means, for applying a pressure to the pressure chamber, the pressure applying means comprising: a diaphragm formed in the pressure chamber, and a piezoelectric element, for vibrating the diaphragm, comprised of: (i) a polycrystalline piezoelectric member, which is highly oriented along a polarization axis, or (ii) a monocrystalline piezoelectric member, of perovskite structure, comprising lead zirconate titanate or barium titanate, wherein a predetermined voltage is applied at least to the piezoelectric element when discharging the ink liquid into a recording medium disposed at a front side of the nozzle.