Liquid jetting apparatus and method for selecting overlapping nozzle

A method for selecting an overlapping nozzle by a controller of a liquid jetting apparatus provided with:

• a first head chip having first nozzles arranged in a nozzle arrangement direction;
• a second head chip having second nozzles arranged in the nozzle arrangement direction, and being arranged to overlap at least partially with the first head chip in an orthogonal direction orthogonal to the nozzle arrangement direction;
• the controller configured to control the first head chip and the second head chip to jet liquid from the first nozzles and the second nozzles;
• and power sources having different voltages, respectively, wherein each of the first nozzles and the second nozzles is driven by voltage supplied from one of the power sources, and the first head chip has a first overlapping portion and the second head chip has a second overlapping portion, the first overlapping portion and the second overlapping portion overlapping in the orthogonal direction with each other, the method comprising:
• acquiring information of drive voltages for first execution nozzles, which are included in the first nozzles and from which the liquid is to be jetted;
• acquiring information of drive voltages for second execution nozzles, which are included in the second nozzles and from which the liquid is to be jetted;
• and
• based on the information of the drive voltages for the first execution nozzles and the second execution nozzles, selecting one of the first overlapping nozzle and a second overlapping nozzle overlapping in the orthogonal direction with each other to jet the liquid, the first overlapping nozzle being included in the first execution nozzles and included in the first overlapping portion, the second overlapping nozzle being included in the second execution nozzles and included in the second overlapping portion.