Method of driving an ink-jet printhead

Details Method of driving an ink-jet printhead Method of driving an ink-jet printhead

2008-07-01

2008-07-01

Meier, Stephen D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C347S011000, C347S068000, C347S070000, C347S057000

Reexamination Certificate

active

07393072

ABSTRACT:
A method of driving an ink-jet printhead, the ink-jet printhead having a pressure chamber to be filled with ink, a piezoelectric actuator for varying a volume of the pressure chamber, and a nozzle, through which an ink droplet is ejected, connected to the pressure chamber, the method including applying a driving pulse to the piezoelectric actuator to change the volume of the pressure chamber, thereby ejecting the ink droplet through the nozzle due to a change in pressure in the pressure chamber caused by the change in volume of the pressure chamber, and changing a volume of the ink droplet ejected through the nozzle by maintaining a rising time of the driving pulse constant and adjusting a duration time of a maximum voltage of the driving pulse.

REFERENCES:
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patent: 59-042965 (1984-03-01), None
patent: WO 02/26499 (2002-04-01), None

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