Patent ID: 6575544
Filing Date: 2003-06-10
Classification: B41J

Abstract:
A method for ejecting an ink droplet from an inkjet head provided in an ink droplet ejecting apparatus, the inkjet head including an actuator and a cavity plate having a pressure chamber for ejecting an ink droplet, comprising:applying a driving pulse to the actuator to generate a pressure wave in the pressure chamber, wherein an output period of a sequence of driving pulses is set to be five times of a time AL (5 AL), where AL is the time in which a pressure wave propagates one-way within the ink chamber, when the sequence of the driving pulses are successively applied to the actuator to form one dot with a plurality of ink droplets in accordance with a printing command, residual pressure is reduced so that a second ink droplet is stably ejected in the appropriately reduced residual pressure and the implementation of setting the output period of the driving pulses to be 5 AL is determined based on data regarding ink temperature in the inkjet head.