| 摘要 |
Nozzles 32C, 32M, and 32Y able to discharge color ink are formed at a first resolution, that is, 120 dpi, and nozzles 32K1 and 32K2 able to discharge black ink are formed at a second resolution, that is, 360 dpi. In addition, the printing resolution of color image data in the vertical direction is the second resolution. In this case, since pixels where the x-coordinate is 1, 4, 7 . . . , 3*n+1 (where n is an integer equal to or greater than 0) are in positions corresponding to the nozzles 32C, 32M, 32Y, and 32K1, these are transmitted to an image forming apparatus as color image data, and since the other pixels are in positions corresponding to the nozzles 32K2, these are color converted into grayscale image data and transmitted to the image forming apparatus.
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