Patent ID: 8864261
Filing Date: 2014-10-21
Classification: B41J,H01L

Abstract:
1. A nozzle discharge quantity correction method in which one of a plurality of different driving waveform signals is selected, and the selected driving waveform signals to an actuator of each nozzle of nozzle arrays is supplied, and weight of droplets which is discharged from the nozzle to a discharge region is corrected, the method comprising: performing first correction calculation in first nozzle array units, in discharge units, or in scanning units on each nozzle to correct a difference between a total sum A of the weight of the droplets which are discharged in second nozzle array units, in the discharge units, or in the scanning units and a predetermined quantity B which should be discharged to the discharge region based on a total sum C of the weight of the droplets in the first nozzle array units, in the discharge units, or in the scanning units performing second correction calculation in the second nozzle array units, in discharge units, or in scanning units on each nozzle to correct a difference between the corrected total sum C by the first correction calculation and the predetermined quantity B based on the total sum A.