| 摘要 |
<p>An image recording apparatus (1) has low intensity ink ejection parts (211a) for ejecting low intensity ink, and a high intensity ink ejection part (211b) for ejecting high intensity ink. With respect to a direction orthogonal to a moving direction of printing paper (9), a pitch (P2) of outlets in the high intensity ink ejection part (211b) is larger than that (P1) in the low intensity ink ejection part (211a). Thus, manufacturing cost of the apparatus is reduced. With respect to each gray level in a middle grayscale range, if a tint image (521-526, 531-533) is recorded with the high intensity ink, a spatial frequency of this tint image is lower than that of a tint image (511-516) recorded with the low intensity ink. By the above image recording control, even if the high intensity ink ejection part includes an abnormal outlet where a flight direction of droplet is abnormal, streak unevenness in a color halftone image can be suppressed.</p> |
