Ink jet apparatus and method of operation
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United States of America Patent
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-
Feb 8, 1994
Issued Date -
N/A
app pub date -
Oct 27, 1987
filing date -
Dec 27, 1982
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method for controlling the boldness of printing via control of the number of ink droplets ejected from a drop on demand ink jet apparatus for producing each ink dot upon a recording medium, the apparatus including at least one transducer operable for producing a pressure disturbance within an associated ink chamber for ejecting an ink droplet from an associated orifice the method comprising the steps of operating the transducer in an iterative manner for selectively producing a predetermined plurality of successively equal or higher or lower amplitude pressure disturbances within the ink chamber, or some combination thereof, for causing a predetermined plurality of successively equal or higher or lower velocity ink droplets, or some combination thereof, to be ejected from the orifice of the ink jet apparatus, within a time period permitting the ink droplets to either merge in flight or upon striking a recording medium, thereby controlling the size of the 'ink spot' so printed upon the recording medium.
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