Patent ID: 8371675
Filing Date: 2013-02-12
Classification: B41J

Abstract:
1. A liquid ejection device comprising: a plurality of nozzles arranged to eject a liquid; a plurality of piezoelectric elements provided in respective correspondence to the nozzles; a drive signal generating portion arranged to generate a drive signal which repeats for each of ejection cycles in which the nozzles eject the liquid onto a pixel, the drive signal having a testing period within each of the ejection cycles; and a common ejection testing portion provided in common to the nozzles, at least one of the piezoelectric elements corresponding to at least one of the nozzles to be tested being driven within a given ejection cycle of the drive signal, which includes the testing period, whereupon the at least one of the nozzles to be tested is tested by the common ejection testing portion during the testing period of the same given ejection cycle.