(57) For controlling the volume of ink droplets ejected from a drop on demand ink jet
apparatus including a transducer (204) operable for producing a pressure disturbance
within an associated ink chamber (200) for ejecting an ink droplet from an associated
orifice (202), the transducer (204) is operated in an iterative manner for producing
a plurality of successively equal or higher or lower amplitude pressure disturbances,
or some combination thereof, within the ink chamber (200), for causing a plurality
of successively equal or higher or lowervelocity ink droplets, or some combination
thereof, to be ejected from the orifice (202) of the ink jet apparatus, within a time
period permitting the ink droplets to either merge in flight or upon striking a recording
medium.
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