Inkjet recording apparatus, inkjet recording method, and inkjet recording program

An inkjet recording method comprising:

• using a recorder having a line head, the line head including a plurality of head modules each having a plurality of ink ejection ports arranged in a line, the head modules being arranged in an arrangement direction of the ink ejection ports and overlapping in an overlapping region, the recorder ejecting ink through each of the ink ejection ports toward a recording medium;
• using a mover that moves the recording medium and the line head relative to each other in a direction intersecting the arrangement direction of the ink ejection ports in the line head, and causes each pair of ink ejection ports of two adjacent head modules facing each other in the overlapping region to pass through a same place on the recording medium;
• controlling ink ejection operations of the plurality of head modules on the recording medium in accordance with dot data that are based on image data, and causing, in the overlapping region, either of a pair of ink ejection ports of two adjacent head modules to eject ink to implement complementary ink ejection operations by the pair of ink ejection ports of the two head modules;
• and
• switching, in the overlapping region, from ink ejection from one of a pair of ink ejection ports to ink ejection from the other ink ejection port when at least one condition is satisfied, the one condition being that a non-ejection section has continued for a predetermined length or more in the dot data.

A non-transitory recording medium storing a computer readable inkjet recording program, the program controlling an inkjet recording apparatus by being executed on a computer, the inkjet recording apparatus comprising:

• a recorder having a line head, the line head including a plurality of head modules each having a plurality of ink ejection ports arranged in a line, the head modules being arranged in an arrangement direction of the ink ejection ports and overlapping in an overlapping region, the recorder ejecting ink through each of the ink ejection ports toward a recording medium;
• and
• a mover that moves the recording medium and the line head relative to each other in a direction intersecting the arrangement direction of the ink ejection ports in the line head, and causes each pair of ink ejection ports of two adjacent head modules facing each other in the overlapping region to pass through a same place on the recording medium, wherein
• the program causes the computer to perform:
• controlling ink ejection operations of the plurality of head modules on the recording medium in accordance with dot data that are based on image data, and causing, in the overlapping region, either of a pair of ink ejection ports of two adjacent head modules to eject ink to implement complementary ink ejection operations by the pair of ink ejection ports of the two head modules;
• and
• switching, in the overlapping region, from ink ejection from one of a pair of ink ejection ports to ink ejection from the other ink ejection port when at least one condition is satisfied, the one condition being that a non-ejection section has continued for a predetermined length or more in the dot data.