| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily correct ejection timing. <P>SOLUTION: A head 31 has first and second outlet rows 311 and 312 arranged in a movement direction and records uniform images in a plurality of check regions on a base material. In the uniform image in each check region, a combination of a first dot row formed with the first outlet row and a second dot row while being spaced apart from the first dot row in the movement direction and formed with the second outlet row is repeatedly arranged with a repeat pitch in its movement direction. When recording the uniform image in each check region, a distance obtained by changing a reference distance, which is half the repeat pitch by a set shift amount is assigned as a distance between each first dot row and each second dot row, the set shift amount being progressively changed for the plurality of check regions. A maximum density check region in which a dot area ratio in the uniform image is maximum out of the plurality of check regions is specified. The ejection timing of the second outlet row relative to the first outlet row is corrected based on the set shift amount corresponding to the maximum density check region. <P>COPYRIGHT: (C)2013,JPO&INPIT |
