| 摘要 |
PROBLEM TO BE SOLVED: To obtain a stamp image of substantially the same graphic width as an ID label or an original image and to collapse almost no fine image. SOLUTION: A dot in which a left side adjacent dot is off is made as a dot to be corrected by a profile left mask operation (step S3), and a dot in which an upper side adjacent dot is off is made as a dot to be corrected by a on-profile mask operation (step S4). In the dot correcting operation (step S5), the dot to be corrected is checked in a rectangular area and a rhombic area, a dot corresponded to the either area is made off, and a dot not corresponded to either areas is made on.
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