Patent ID: 8038261
Filing Date: 2011-10-18
Classification: B41J

Abstract:
1. A droplet jetting head comprising: a nozzle plate including a plurality of nozzles arranged in a single line and a plurality of liquid passages which communicate with the plurality of nozzles, respectively, and which extend in the same direction, wherein the plurality of liquid passages are respectively formed by a plurality of first arc wall surfaces arranged in one line, a plurality of second arc wall surfaces cyclically arranged in a triangular waveform, and a plurality of wall surfaces connecting the first arc wall surfaces and the second wall surfaces continuously; a liquid chamber plate including a plurality of liquid chambers provided in the plurality of liquid passages and configured to respectively communicate with the plurality of liquid passages; and a plurality of piezoelectric elements provided so that an end of each of the piezoelectric elements faces a corresponding one of the plurality of liquid chambers, wherein a distance between each of the nozzles and the corresponding liquid chamber communicating with the nozzle is changed in a cycle.