Patent ID: 8851599

Claim:
A print control device that controls a printing apparatus including a first nozzle array in which a plurality of nozzles that discharge an ink are lined in a predetermined direction, and a second nozzle array in which a plurality of nozzles that discharge the ink are lined in the predetermined direction and some of the nozzles are disposed in an overlapping position overlapping some nozzles of the first nozzle array in the predetermined direction, the print control device being configured to control the printing apparatus to print a test pattern by using the nozzles included in the first nozzle array and the second nozzle array, the test pattern having a plurality of dot arrays arranged in the predetermined direction, each of the dot arrays being formed along an intersecting direction intersecting with the predetermined direction, to print a plurality of rules disposed in the predetermined direction so as to be adjacent to the test pattern by using the nozzles included in the first nozzle array and the second nozzle array, to compute density correction values of each of raster lines according to density of each of the raster lines lined in the predetermined direction, the density of each of the raster lines being detected from image data of which the test patterns are read, and to associate at least one position of the nozzles included in the first nozzle array and the second nozzle array, which is specified from positions of the rules, with a position of a first raster line of the raster lines for which the density correction values are computed, by selecting a first rule and a second rule based on the rules, the first rule and the second rule being located adjacent to the first raster line in the predetermined direction such that the first raster line is located between the first rule and the second rule in the predetermined direction, by calculating a first distance between the first rule and the first raster line in the predetermined direction, and a second distance between the second rule and the first raster line in the predetermined direction, and by specifying the position of the first raster line relative to the nozzles by using the first distance and the second distance.