Patent ID: 8974034
Filing Date: 2015-03-10
Classification: B41J

Abstract:
1. An ink-jet recording apparatus, comprising: an ink-jet head having a droplet ejecting surface in which a plurality of nozzles from which droplets of ink are ejected are formed in at least one row along a prescribed nozzle arrangement direction, the ink-jet head being movable in a scanning direction parallel to the droplet ejecting surface and intersecting the prescribed nozzle arrangement direction; a conveyor mechanism configured to move, in a conveyance direction parallel to the droplet ejecting surface and intersecting the scanning direction, at least one of the ink-jet head and a recording medium that is disposed so as to be opposed to the droplet ejecting surface, such that the ink-jet head and the recording medium are moved relative to each other; and a controller configured to control the ink-jet recording apparatus, wherein the controller includes a pattern forming portion configured to form, on the recording medium, an inclination detect pattern for detecting inclination of the at least one nozzle row with respect to the prescribed nozzle arrangement direction due to rotational displacement of the ink-jet head in a plane parallel to the droplet ejecting surface, by controlling the ink-jet head and the conveyor mechanism, and wherein the pattern forming portion is configured to form, as the inclination detect pattern, wherein the controller further includes an inclination detect portion configured to detect the inclination of the at least one nozzle row on the basis of a recognition result of the first inclination detect pattern and the second inclination detect pattern formed on the recording medium, and wherein the inclination detect portion is configured to obtain a distance in the scanning direction between the two lines in the first inclination detect pattern and a distance in the scanning direction between the two lines in the second inclination detect pattern and to detect the inclination of the at least one nozzle row on the basis of a sum of the distances.