| 摘要 |
The present invention allows for printing a high quality image based on print data which is obtained by dividing multivalue image data into portions, one for each scan, and quantizing the divided portions of image data. To this end, multivalue input data is divided into input pass data for each scan, which is then corrected using error data. The corrected input values are added up to determine a total corrected input value. The total corrected input value is quantized into a total output value, which has fewer gradation levels than the input data. The total output value is then distributed unevenly among a plurality of printing scans to generate print data for each scan.
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