| 摘要 |
A perfecter includes: a transfer cylinder (14); a blanket impression cylinder (11); a blanket cylinder (12); and an air blow (15) and suction chambers (23a to 23f), which are provided to prevent a sheet (W) from contacting with the blanket impression cylinder (11) after the sheet (W) is conveyed from the transfer cylinder (14) to the blanket impression cylinder (11) and before the sheet reaches a contact point between the blanket impression cylinder (11) and the blanket cylinder (12). In the perfecter, a camera (30) is provided to take images of the sheet (W) from the same direction as a cylinder shaft direction of the blanket impression cylinder (11) at a certain timing after the sheet (W) is conveyed to the blanket impression cylinder (11) from the transfer cylinder (14) and before printing on the sheet (W) by the blanket impression cylinder (11) and the blanket cylinder (12) is finished.
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