| 摘要 |
Disclosed is a head chip and a method of producing the same which help to achieve an improvement in production yield and a reduction in production cost and which allow high speed printing and high density printing. The head chip is of the type in which grooves defined by side walls are provided in one surface of a substrate and in which by applying voltage to electrodes provided on the side walls, ink in the grooves is ejected from nozzle openings of a nozzle plate joined to one surface of the substrate, wherein the plurality of piezoelectric ceramic members extending in a reference direction are embedded in one surface of an insulating main body of the substrate to form the substrate, wherein the grooves are formed at predetermined intervals so as to extend over the row of piezoelectric ceramic members to thereby provide the side walls, wherein the electrodes are provided in the regions of the side walls where the piezoelectric ceramic members are provided to thereby form drive portions for independent driving, and wherein the nozzle openings are provided at positions corresponding to the drive portions of the grooves to form the plurality of nozzle rows.
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