Patent ID: 7600848

Claim:
A printing apparatus for printing on a printing medium by using a print head capable of ejecting first and second color inks to the printing medium, the apparatus comprising: a control unit that controls printing of a pattern on the printing medium by using the print head, the pattern being used to acquire adjustment values for printing positions in a print operation using the first color ink; and an optical sensor that detects optical characteristics of the printing medium on which the pattern is printed; wherein said control unit sets an adjustment value for adjusting the printing positions in the print operation using the first color ink, on the basis of a result of detection by said optical sensor, wherein the first color ink is detected by said optical sensor at a detection sensitivity higher than that of the second color ink, wherein the pattern is printed by using only the first color ink, and wherein said control unit substitutes and sets the adjustment value for adjusting the printing positions in the print operation using the first color ink for an adjustment value for adjusting printing positions in a print operation using the second color ink.