Liquid ejection apparatus and storage medium storing program

A non-transitory computer-readable storage medium storing a set of program instructions for a computer of an electronic device that controls a liquid ejection apparatus, the liquid ejection apparatus including a head having a plurality of ejection ports configured to eject liquid, a conveyor configured to convey a recording medium in a conveyance direction, a carriage on which the head is mounted, the carriage being configured to reciprocate in a scanning direction perpendicular to the conveyance direction, and a controller configured to perform conveyance processing of controlling the conveyor to convey the recording medium in the conveyance direction, the set of program instructions, when executed by the computer, causing the electronic device to:

• determine whether a code image is to be formed on the recording medium such that a particular direction of the code image is same as the scanning direction, the particular direction being a direction in which a plurality of recorded regions and a plurality of non-recorded regions are formed alternately;
• and
• in response to determining that the code image is to be formed such that the particular direction is same as the scanning direction, perform divided recording processing of controlling the head and the carriage to:
• (a) record a plurality of first portions with liquid ejected from the head during a first movement of the head in the scanning direction, the plurality of first portions being respective portions of the plurality of recorded regions, the plurality of first portions being located at a same position with respect to the conveyance direction;
• and
• (b) record a plurality of second portions with liquid ejected from the head during a second movement of the head in the scanning direction, the plurality of second portions being respective portions of the plurality of recorded regions, the plurality of second portions being located at a same position with respect to the conveyance direction, the plurality of second portions being located at an at least partially different position from the plurality of first portions with respect to the conveyance direction, the second movement being a movement in a direction opposite the first movement, the second movement being performed after the first movement without performing the conveyance processing between the first movement and the second movement.