| abstract |
(57) [Summary] [Purpose] To improve the image quality when there is a color image adjacent to a black image. When a color image is present adjacent to a black image, all adjacent portions of the black image in the black image are formed by dots formed by mixing a plurality of color inks, and the black image around the adjacent portion is formed by black ink. And the dots formed by mixing the color ink and the color ink are mixed. At this time, the ratio of black ink dots is increased as the distance from the adjacent portion increases. As a result, in the black image where the color images are adjacent to each other, Since the color changes gradually, there is no sudden change in color tone, It looks good. |