| 摘要 |
In a thermal transfer printer for printing a color picture by dividing it into pieces with a prescribed size, an image data converting unit 10 includes a joint shifting unit 10b for shifting a joint of each color between the divided pieces so that the joints of individual colors are not aligned with each other in the sub-scanning transfer direction, and a joint processing unit 10c for transferring the joints of the individual colors, which are shifted by the joint shifting unit, so that the joints overlap each other, and for correcting gradation data in the overlapping portion according to correction coefficients that are set in advance for each line in the sub-scanning transfer direction.
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