Ink jet printing apparatus and ink jet printing method
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United States of America Patent
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Nov 30, 2010
Grant Date -
Oct 30, 2008
app pub date -
Apr 22, 2008
filing date -
Apr 26, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An object of the present invention is to provide an ink jet printing apparatus and an ink jet printing method which can prevent print quality from being degraded by a non-ejection nozzle while maintaining high-speed printing performance based on a raster division method. The present invention sequentially performs, array by array, an operation of ejecting ink through a plurality of nozzle arrays to sequentially print an image in a plurality of raster forming areas of a print medium. At this time, if an expected printing result fails to be achieved owing to a nozzle included in any of the nozzle arrays which exhibits degraded ejecting performance, degrading image quality, then the ejection order of the plurality of nozzle arrays is changed. This enables a reduction in the degradation of print quality caused by the ejecting performance of the nozzles.
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