Patent ID: 8708449
Filing Date: 2014-04-29
Classification: B41J

Abstract:
1. A liquid ejection device comprising: a plurality of nozzles arranged to eject a liquid; and a common ejection testing portion provided in common to the nozzles, the common ejection testing portion being arranged to perform ejection testing of each of the nozzles during printing, at least one of the nozzles being selected to be tested using the common ejection testing portion when the liquid is ejected from the nozzles based on print data, the nozzles that eject liquid being identified based on the print data, and one of the nozzles, which have not been tested, having low ejection frequency based on the print data being selected as the at least one of the nozzles to be tested, when the nozzles, which have not been tested, have identical ejection frequency, one of the nozzles that does not eject the liquid for a prolonged period based on the print data being selected as the at least one of the nozzles to be tested.