Drop-on-demand ink-jet printing head.

摘要

Described is a drop-on-demand ink-jet printing head which comprises a base (44), a nozzle plate (43) defining a plurality of nozzle apertures (41,42) and an array of piezoelectric elements (45,46) each arranged at predetermined intervals and having one end which is fixed onto said base (44) and the other free end which is confronted with said nozzle apertures (41,42) of said nozzle plate (43). The piezoelectric elements (45,46) are formed by alternately stacking paste-like piezoelectric material and conductive material in the form of a layer, burning a lamination of said piezoelectric material and said conductive material to provide a piezoelectric plate, and cutting said piezoelectric plate into a plurality of piezoelectric elements with a predetermined width so that a direction perpendicular to a lamination direction coincides with a main vibrating direction. A gap is formed between said nozzle apertures (41,42) of said nozzle plate (43) and said free end of said piezoelectric elements for accumulating an ink therein. <IMAGE>