Patent ID: 7137685
Filing Date: 2006-11-21
Classification: B41J

Abstract:
1. A print head in which a plurality of print head chips are arranged, each print head chip having a plurality of ink-pressurizing cells arranged on a substrate, the ink-pressurizing cells having heating elements which are driven so as to eject ink contained in the ink-pressurizing cells through nozzles, the print head comprising: a print-head-chip retainer which retains each of the print head chips; and a nozzle structure having plurality of nozzles formed therein, each of the nozzles being located over a corresponding ink pressurizing cell, wherein the print head chips are disposed on the print-head-chip retainer, wherein the print head chips are disposed such that the ink-pressurizing cells of the print head chips face the nozzles of the nozzle retainer, and wherein dummy chips which are disposed at regions where the print head chips are not disposed, such that a plurality of print head chips are alternately spaced generally along a line and the dummy chips are alternately placed between adjacent ones of the print head chips.