Printing apparatus and printing control apparatus

A printing control apparatus configured to control printing by a print head including an overlapping portion where a formation range of a first nozzle group configured to eject ink and a formation range of a second nozzle group configured to eject ink of a same color as the first nozzle group at least partially overlap, the printing control apparatus comprising:

• a halftone processing unit configured to generate halftone data specifying a presence or absence of dots for each pixel based on image data;
• and
• a distribution processing unit configured to distribute the halftone data into first halftone data for driving the first nozzle group, and second halftone data for driving the second nozzle group, wherein
• the distribution processing unit is configured to define a switching position between the first nozzle group and the second nozzle group in the overlapping portion, based on a dot formation frequency of each nozzle position in the overlapping portion specified by, among the halftone data, specific halftone data corresponding to the overlapping portion, and distribute the specific halftone data into the first halftone data and the second halftone data, based on the switching position.