水墨印刷是一种特殊的印刷技术，运用水墨印刷技术能够在承载物上表现出细致的色彩变化。水墨印刷所使用的油墨实现需要进行稀释溶解，这样做是为了保证色彩印刷的平整。由于稀释后的油墨进行淡色印刷比普通专色的淡色色彩表现力更为出众，因此设计师往往利用经过稀释后的油墨进行水墨印刷，在纸张上面形成淡色底色以备随后四色印刷使用。
Ink and wash printing is a special printing technology, which can show the color change of the carrier. The ink used in water ink printing needs to be diluted and dissolved to ensure the smoothness of color printing. Because the diluted ink for light color printing is more outstanding than ordinary spot color, designers often use diluted ink for ink-wash printing, forming a light background color on the paper for subsequent four-color printing.
如果希望把稀释后的油墨当作四色中的一种颜色进行印制，它会在纸张上呈现出半调色彩的效果，总之，水墨印刷技术能够带给印刷细腻的色彩视觉效果。
If you want to print the diluted ink as one of the four colors, it will show a halftone color effect on the paper. In short, ink-jet printing technology can bring fine color visual effect to printing.