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AssigneeSeiko Epson Corporation
InventorYukimitsu Fujimori
Estimating the term…
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.
A print control apparatus which causes a print head to print pixels constituting each image line during its primary scanning, said print head having columnarly arranged nozzles to eject different color inks according to printing data, said print control apparatus comprising an image line judging unit to judge whether or not a prescribed printing condition holds for the image line to be printed and a print control unit to change the number of nozzles to be used for printing each image line depending on whether or not said printing condition holds.
A print control method which causes a print head to print pixels constituting each image line during its primary scanning, said print head having columnarly arranged nozzles to eject different color inks according to printing data, said print control method comprising an image line judging step to judge whether or not a prescribed printing condition holds for the image line to be printed and a print control step to change the number of nozzles to be used for printing each image line depending on whether or not said printing condition holds.
A medium storing a print control program which causes a print head to print pixels constituting each image line during its primary scanning, said print head having columnarly arranged nozzles to eject different color inks according to printing data, said print control program making the computer to realize an image line judging function to judge whether or not a prescribed printing condition holds for the image line to be printed and a print control function to change the number of nozzles to be used for printing each image line depending on whether or not said printing condition holds.
Dependencies are inferred from the claim text.