Ink jet recording device

Abstract

Abstract PURPOSE:To prevent air suction through an ink jet nozzle by providing a plurality of piezoelectric ceramics with different pressure cyclic phases on the external wall of an ink chamber and forming a travelling waveform on the external wall by the phase difference. CONSTITUTION:A printer head is composed of sequentially joint components such as a pressure plate 1, a nozzle plate 2, a supply plate 3, a bypass plate 4, a tank plate 5 and a blind plate 6. When piezoelectric ceramics for ink induction 9,10 are given a sign wave at the time of driving the printer head, the ceramics generate a travelling wave. That is, the printer head is driven from a state where it is not driven, and at the same time, an alternating current signal is input from a pulse generator so that the polarities of the piezoelectric ceramics for ink induction 9, 10 are always reversed. This results in the deformation of the pressure plate 1. Furthermore, the pressure plate 1 is transformed to generate a travelling wave by proper selection of input signal frequency. This travelling wave enables ink to gain a propelling force for supply to a pressure chamber 13 side. Consequently, a predetermined pressure can be applied to an ink flying direction all the time, thus preventing air suction through an ink jet nozzle.

Inventors

• 👤 Tetsuya Kobayashi
• 👤 徹也 小林

Bibliographic Details