A printer includes a print engine and a controller configured to, when a particular condition is satisfied, control the print engine to perform first partial printing to form first dots corresponding to a first portion of a target image without forming second dots corresponding to a second portion of the target image, perform sub scanning over a first distance after the first partial printing and before second partial printing, and perform the second partial printing to form the second dots without forming the first dots, and when the particular condition is not satisfied, control the print engine to perform the first partial printing to form at least a part of the first dots, perform the sub scanning over a second distance different from the first distance after the first partial printing and before second partial printing, and perform the second partial printing to form the second dots.