| 摘要 |
<p>There is provided a colour ink jet printing device which includes an image data acquiring unit that acquires first multilevel image data corresponding to each colour of the colour image; a nozzle information storing unit that stores nozzle information capable of identifying a nozzle related to banding; a second image data creating unit for changing a pixel value of pixel data corresponding to an abnormal nozzle related to the banding in the first image data on the basis of the nozzle information; a printing data creating unit for converting the second image data into dot forming pattern data on the recording medium; and a printing unit that prints the colour image constructed by the second image data on the recording medium. Further, the second image data creating unit, after changing a pixel value of pixel data corresponding to the abnormal nozzle into a value capable of preventing or reducing the banding, changes a pixel value of pixel data corresponding to a nozzle of a colour different from the colour of the ink ejected by the abnormal nozzle such that the produced colour in combination is within the same colour range as the colour for that region of the image as indicated in the first colour image data.</p> |
