A checker array print head is able to output an image with possible white or black stripes made unnoticeable even when the conveyance direction of a print medium with respect to the ink jet print head is skewed. A first chip located on an upstream side in a conveyance direction (X direction) and a second chip located on a downstream side in the conveyance direction are arranged such that a dot printed via the first chip and a dot printed via the second chip are printed at intervals shorter than a print resolution in an ejection port arrangement direction (Y direction). Thus, even if the conveyance direction of the print medium is skewed by meandering thereof or the like, possible white stripes, which are particularly noticeable, can be inhibited.