| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for aligning printing position which can simply and highly accurately perform aligning of the first printing and the second printing in a printing apparatus, e.g. printing between reciprocating scanning of a print head without troubling a user. SOLUTION: A plurality of patterns whose timings for starting of printing are shifted by a specified amt. to a reference dot are printed in a reciprocating scanning of a print head or a complementary printing by a plurality of heads. In addition, on each of a plurality of the patterns, optical characteristics are measured for a plurality of times by shifting the position to obtain a plurality of data and optical characteristics related to each of the patterns are obtd. from a plurality of these data and based on the optical characteristics, an adjusted value for the condition on dot forming position between the first and the second printings is obtd. In this instance, it is judged whether the pattern is formed under a condition where fluctuation on density is generated from a plurality of the data and such a pattern as this is extruded from the processing for obtaining the adjusted value. |
