A liquid drop discharging head includes a matrix array head that can reduce variations
in a print density without reducing a recording speed. A liquid drop discharging
device provided with this liquid drop discharging head can realize compatibility
between recording an image at high speed and recording the high quality image.
Ejectors are disposed alternately to form dots on a recording medium that are arranged
in the order of alternating ejectors such as A, E, B, F, C, G, D, and H. The dots
having a relatively large diameter and the dots having a relatively small diameter
are mixedly disposed in a sub-scanning direction at predetermined pitches. Mixed
arrangement of dots increases space frequency variations in a print density along
the sub-scanning direction, thus, making it difficult for the human eye to sense
the density variations, and ensuring a high uniformity in a recorded result.
