Image recording apparatus

An image recording apparatus comprising:

• a conveyer configured to convey a medium in a conveyance direction;
• a carriage configured to reciprocally move in a scanning direction intersecting with the conveyance direction;
• a recording head mounted to the carriage and including a discharge surface in which a plurality of nozzles are aligned in the conveyance direction;
• a memory configured to store image data including a plurality of dot elements corresponding to a plurality of dots to be formed on a medium, a discharge amount of liquid discharged for forming a corresponding dot is set for each of the plurality of dot elements in the image data;
• and
• a controller configured to alternately execute a recording operation in which while moving the carriage in the scanning direction, the recording head discharges liquid of the discharge amount set for the dot elements of the image data from the plurality of nozzles to form dots on the medium, and a conveyance operation in which the conveyer conveys the medium in the conveyance direction, to record an image on the medium,
• wherein in a case of recording the image, the controller causes the conveyer, in the conveyance operation, to convey a medium in the conveyance direction such that a first dot formation range where dots are to be formed in a preceding recording operation of two consecutive recording operations and a second dot formation range where dots are to be formed in a subsequent recording operation of the two consecutive recording operations do not overlap each other, and
• wherein in a case of recording a specific image over a boundary between the first dot formation range and the second dot formation range, the specific image consisting of a plurality of discharged dots corresponding to dot elements having the set discharge amounts greater than zero among the plurality of dot elements of the image data, and the specific image having widths for a plurality of dots in the conveyance direction and in the scanning direction, the controller:
• sets, as a correction portion, an end portion in the scanning direction of a specific region including at least one of a first boundary region and a second boundary region in the specific image, the first boundary region being located in a first image region recorded within the first dot formation range, the first boundary region being adjacent to the second dot formation range and having a length shorter than a length of the first dot formation range in the conveyance direction, and the second boundary region being located in a second image region recorded within the second dot formation range, the second boundary region being adjacent to the first dot formation range and having a length shorter than a length of the second dot formation range in the conveyance direction;
• and
• forms the dot placed at the correction portion by discharging liquid of a discharge amount smaller than the discharge amount set for the dot element corresponding to the dot from at least one of the plurality of nozzles.