Printhead having sequenced nozzle firing on integrated circuit
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United States of America Patent
Stats
-
Sep 28, 2010
Grant Date -
Aug 27, 2009
app pub date -
May 7, 2009
filing date -
May 27, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A printhead is provided having an integrated circuit having at least one row including a plurality of sets of n adjacent nozzles, each of the nozzles being configured to expel ink in response to fire signals, and a controller for supplying the fire signals to the integrated circuit such that (a) a fire signal is provided to nozzles at a first and nth position in each set of nozzles, then (b) a fire signal is provided to the next inward pair of nozzles in each set, then in the event n is an even number, (b) is repeated until all of the nozzles in each set has been fired, or in the event n is an odd number, (b) is repeated until all of the nozzles but a central nozzle in each set have been fired, and then the central nozzle is fired.
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