Ink jet head driving method and apparatus

Details Ink jet head driving method and apparatus Ink jet head driving method and apparatus

2005-12-19

2008-11-18

Meier, Stephen D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C347S010000, C347S009000, C347S014000

Reexamination Certificate

active

07452042

ABSTRACT:
There is provided an ink jet head driving method for applying a drive pulse to an actuator to change capacities of a plurality of pressure chambers in which ink has been filled, ejecting an ink droplet from a nozzle formed in communication with the pressure chamber to print onto a printing medium, and moreover, continuously ejecting a plurality of liquid droplets to carry out gradation printing according to the number of liquid droplets, the method including making control so as to, in the case where the number of the liquid droplets is smaller than a predetermined number, apply a boost pulse to amplify a pressure vibration of the pressure chamber prior to a drive pulse for ejecting a first liquid droplet, and in the case where the number of liquid droplets is equal to or greater than the predetermined number, disable applying of the boost pulse.

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