| 摘要 |
PROBLEM TO BE SOLVED: To correct a printing pitch P of a plastic film 1 individually.SOLUTION: A plastic film 1 is fed intermittently at its printing pitch P, and the plastic film 1 stops temporarily at each intermittent feeding. In addition, a printing position of the plastic film 1 is detected by a printing pitch measurement optical sensor 2, and the printing pitch P is measured. Then, when the plastic film 1 stops temporarily, the plastic film 1 is stretched by a plastic film stretching device 4 and the printing pitch P is corrected. |
