Liquid drop discharging head and liquid drop discharging device

Abstract

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.