Image-processing device determining dot formation state of target pixel by using gradation value of target pixel

摘要

In an image-processing device, the controller determines a dot formation state of a target pixel in an image. The determination is performed alternately with a forward process and a reverse process while sequentially selecting each of pixel lines in an order progressing in a first direction. A second pixel density of a second image of a second color is smaller than a first pixel density of a first image of a first color. In the determination, each of the line processes is one of at least two of a first type line process, a second type line process, a third type line process, and a fourth type line process. Line processes are performed for a first unit area in a first pattern. Line processes are performed for a second unit area in a second pattern different from the first pattern.