| 摘要 |
Multipass printing is carried out to print a plurality of registration patterns using different nozzle drive timings. A user selects the most appropriate one of the registration patterns. A driving pattern for the selected pattern is set as a reference value for the adjustment of a print position. This reference value is saved to a predetermined memory for a CPU. During a printing operation, in a unidirectional print mode, a printing operation is performed on the basis of the reference value. On the other hand, in a bidirectional and non-multipass print mode, a printing operation is performed on the basis of the reference value plus a predetermined correction value (+1). In a bidirectional and multipass print mode, a printing operation is performed on the basis of the reference value.
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