1. A printing control method of generating print data to be supplied to a print unit to print, the print unit comprises a print head having a plurality of nozzles and a plurality of ejection drive elements for ejecting an ink from the plurality of nozzles, and is capable of selectively forming one of N types of dots having different sizes at one pixel area with each nozzle, N being an integer of at least 2, the print control method comprising: a dot data generation step of generating dot data representing a state of dot formation at each pixel according to given image data, wherein the dot data generation step includes a step of generating the dot data with a specific dot data generation step for at least a part of the ink types when a printing environment is a specific environment, wherein the specific dot data generation step includes a step of generating the dot data using only a part of dot types among the N types of dots.