Liquid ejection device and liquid ejection method
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United States of America Patent
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Apr 23, 2013
Grant Date -
Oct 20, 2011
app pub date -
Mar 11, 2011
filing date -
Apr 16, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
In a printing device for discharging ink from a plurality of print heads and printing on a print medium, the print heads are arrayed in a direction orthogonal to a movement direction relative to the print medium so that overlapping areas are created which overlap in the movement direction. A change rate of the apportionment ratio between a first nozzle row of an upstream print head in the relative movement direction of the print medium and of a second nozzle row and a downstream print head in the ends in the overlapping areas is greater than the change rate of the apportionment ratio in the middle in the overlapping areas. Concentration irregularity occurring in the overlapping areas of the printed article can thereby be made inconspicuous.
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