Defective printer nozzle compensation control
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United States of America Patent
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May 12, 2015
Grant Date -
Jun 26, 2014
app pub date -
Mar 3, 2014
filing date -
Sep 28, 2010
priority date (Note) -
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Abstract
Ink ejection problems of black ink nozzles are compensated for by forming dots by mixing cyan, magenta and yellow inks without reducing print quality. When a nozzle that discharges black ink becomes unable to properly eject ink, cyan, magenta, and yellow inks are ejected from respective nozzles to the discharge area on the recording medium to which the defective nozzle should eject ink. The volumes of the cyan, magenta and yellow inks that are ejected are set to effectively compensate for the missing black dot.
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