Patent ID: 7878611

Claim:
A liquid ejection head drive device that drives a liquid ejection head that ejects recording liquid droplets from a plurality of nozzles, the liquid ejection head drive device comprising: a plurality of drive elements each disposed in correspondence to one of the plurality of nozzles and causing the respective nozzles to eject recording liquid droplets as a result of drive signal voltages being applied thereto; and a drive circuit, the drive circuit comprising a plurality of drive signal voltage generating units that are each disposed in correspondence to one of the plurality of drive elements and apply drive signal voltages, that are generated on the basis of printing data, to the corresponding drive element, a data transfer unit that transfers printing data of a predetermined number of units of transfer data along a data path that is disposed inside the drive circuit and that has therealong a first plurality of output positions each disposed in correspondence to one of the plurality of drive signal voltage generating circuits, and a second plurality of output positions for comparison of printing data, that are distinct from the first plurality of output positions and are apart from each other by the predetermined number of units of transfer data, the data transfer unit outputting to each of the plurality of drive signal voltage generating units the printing data corresponding therewith via the corresponding one of the first plurality of output positions on the data path, and an output unit that acquires printing data from the second plurality of output positions, compares the plurality of acquired printing data and outputs the result of the comparison.