Patent ID: 8197025

Claim:
A correction value setting method comprising: generating, based on a first correction value that has been set in advance and is used in correcting a density of an image to be printed on a first medium, a second correction value that has a larger correction amount than the first correction value and a third correction value that has a smaller correction amount than the first correction value; printing respectively a first pattern to which the first correction value is applied, a second pattern to which the second correction value is applied, and a third pattern to which the third correction value is applied, on a second medium that differs in type from the first medium, by ejecting liquid from a head including a plurality of nozzles that eject liquid; and setting, based on the first pattern, the second pattern, and the third pattern that have been printed on the second medium, one of the first correction value, the second correction value, and the third correction value, as a correction value used in correcting a density of an image to be printed on the second medium.