| 摘要 |
An adjustment value for adjusting a recording misalignment in the direction of main scanning is determined with high efficiency. The value is used when ink drops are ejected from nozzles to form dots on a print medium. The present invention entails determining adjustment values designed to reduce dot formation misalignments in the direction of main scanning during a printing process. A printing device equipped with a plurality of single-color nozzle groups for ejecting ink drops having mutually different colors is used to form dots while main scanning is performed. In the process, a first adjustment value is selected from a plurality of first possible adjustment values by means of a first misalignment verification pattern. In addition, a second misalignment verification pattern that is different from the first misalignment verification pattern is used to set a second adjustment value from a plurality of second possible adjustment values. The second possible adjustment values are selected from the vicinity of the first adjustment value.
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