Patent ID: 7789478

Claim:
A method for determining a correction value, comprising: printing a plurality of correction patterns along a predetermined direction in order of associated correction values; selecting a first correction pattern from among a plurality of the correction patterns based on results obtained by inspecting a part of each of the correction patterns; selecting a second correction pattern from among a plurality of the correction patterns based on results obtained by inspecting a part other than the part of each of the correction patterns; and determining a correction value used in printing that is a value between a correction value associated with the first correction pattern and a correction value associated with the second correction pattern, wherein if two or more correction patterns become possible choices in selecting the first correction pattern, a correction pattern on one end's side of the predetermined direction is preferentially selected, and if two or more correction patterns become possible choices in selecting the second correction pattern, a correction pattern on the other end's side of the predetermined direction is preferentially selected.