Ink droplet jet device

DETAILED DESCRIPTION An object of the present invention is to provide an ink droplet jet device which can reduce a manufacturing cost and can produce a printed image having a high resolution, thus solving the above-mentioned problems.
According to the present invention achieving the above object, an ink droplet jet device having a jet unit for jetting ink in an ink channel by changing a volume of the ink channel using a piezoelectric transducer includes: a base plate having at least a pair of first side walls formed by piezoelectric ceramic material, the first side walls defining at least one groove having a width which is wider than a width of the ink channel; a cover plate mounted on the base plate having at least one second side wall having a width which is narrower than the width of the groove, wherein the cover plate is bonded to the base plate so that the second side wall is arranged substantially at a center of the groove and so that a plurality of ink channels are formed by the first side walls, the second side wall and the groove.
With this construction, side walls of the piezoelectric transducer forming a part of the ink channel are deformed by the piezoelectric thickness slip effect due to generation of a driving electric field, and an ink droplet is jetted from the groove to the ink channel, thus supplying ink to the ink channel.