Patent ID: 8371676
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, there being a plurality of selectable periods provided in each of the ejection cycles, at least one of the periods being a testing period; a selection portion arranged to selectively apply the drive signal to the piezoelectric elements in each of the periods; and an ejection testing portion arranged to perform ejection testing of the liquid from at least one of the nozzles to be tested, the selection portion being arranged to select the testing period and a period prior to the testing period for the at least one of the nozzles to be tested, and after the piezoelectric element corresponding to the nozzle to be tested has been driven by the drive signal in the period prior to the testing period, the ejection testing portion being arranged to perform ejection testing of the at least one of the nozzles to be tested during the testing period.