| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid droplet discharge device that can reduce variation in liquid droplet amounts and correct variation in liquid droplet speed.SOLUTION: A liquid droplet discharge device has a liquid droplet discharge head in which nozzles for discharging liquid droplets, pressure chambers to be communicated with the nozzles and pressure generation means that change volume of the pressure chambers by application of drive signals are provided respectively in the plural number, where the drive signals include an expansion pulse for expanding the volume of the pressure chambers and a contraction pulse for contracting the volume of the pressure chambers. The plurality of nozzles are divided into a plurality of groups constituted of at least one nozzle, a driving voltage value of the expansion pulse is commonly set to each group, a driving voltage value of the contraction pulse is set independently depending on level of the liquid droplet speed for each group, on the basis of information of memorizing means 65, and the drive signals are applied to the liquid droplet discharge head so as to discharge the liquid droplets. |
