| 摘要 |
PROBLEM TO BE SOLVED: To provide an image data processing device and a liquid ejector in which dots formed on a recording medium by pre-discharge do not stand out by a few arithmetic processing.SOLUTION: Relating to an interest pixel 81a of a plurality of pixels which are matrix arranged in a printing area of a paper sheet, an addition part 45 adds a density value of an image data, a density value of a flushing data and an error diffusion value which is diffused in quantization of pixels already quantized, to generate a total density value. A quantization part 46 quantizes the total density value and also outputs a quantization error value generated when quantized. A subtraction part 47 outputs a quantization error correction value obtained by subtracting a value corresponding to the concentration value of the flushing data corresponding to the interest pixel 81a from the quantization error value. An error distribution part 44 makes the quantization error correction value error diffuse as the error diffused value to 13 pieces of untreated pixels 81b arranged in the neighborhood of the interest pixel 81a. |
