| 摘要 |
Printing with one nozzle is liable to cause banding, whereas printing with more than one nozzle to prevent banding is slow in printing speed. The print control apparatus performs the image judging processing as the preliminary processing for the dot-forming control processing, and it generates the printing condition to specify whether to perform printing in the normal mode for each image line or to perform printing in the overlap mode for each image line. And, it performs the rasterizing on the basis of this printing condition. If it prints in the overlap mode the image line containing print pixels (such as black pixels and pixels having approximately the same resolution) subject to banding, then it is possible to prevent the occurrence of banding even though other image lines are printed at a high speed in the ordinary printing manner. Therefore, it permits high-quality high-speed printing.
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