Patent ID: 9669619
Date: 2017-06-06
CPC Classifications: B41J

Claim:
1. A liquid ejecting apparatus comprising: an ejector that includes nozzle lines that eject liquid droplets and is movable forward and backward in first directions intersecting the nozzle lines; a moving unit that causes a medium and the ejector to move relatively to each other in a second direction intersecting the first directions; and a controlling unit that is operated to form a first pattern and second patterns, having a plurality of sub-patterns arranged in the first directions, on the medium while the liquid droplets are ejected from the ejector and the ejector is moved in a forward direction of the first directions, and to form a third pattern and fourth patterns on the medium while the liquid droplets are ejected from the ejector and the ejector is moved in a backward direction of the first directions, the third pattern having sub-patterns deviating in sequence from the respective sub-patterns of the first pattern in the first directions by a first deviation amount, the fourth patterns each having sub-patterns deviating in sequence from the respective sub-patterns of the second patterns in the first directions by a second deviation amount smaller than the first deviation amount, wherein positions of sub-patterns of at least one rough adjustment pattern, including the first pattern and the third pattern, and positions of sub-patterns of fine adjustment patterns, including the second patterns and the fourth patterns, in the first directions are associated with each other, and in each fine adjustment pattern, image density periodically changes along the first directions in accordance with deviation of the sub-patterns of the fourth patterns formed on the medium in sequence from the respective sub-patterns of the second patterns by the second deviation amount, and the fine adjustment patterns each include one or more cycles of the periodic changes.