When printing labels with a J4103 offset press and 80g /? Coated paper, irregular ghosting appeared in the middle of the paper. The first analysis may be that there is a problem in the installation of the rubber roller lining or the blanket, but after re-adjustment, the ghosting failure cannot be eliminated. So the printed product was taken out and re-analyzed. It was found that the paper was turned over in a place with better light, and there would be corrugated wrinkles in the middle of the paper. The part was moved backwards, but no problems were found through inspection. Then slowly jog the machine to check the hand-off between the delivery tooth and the impression cylinder gripper. It is found that the closing time of the gripper teeth of the impression cylinder is ahead of time and the opening angle of the gripper teeth is too small After the positioning cone pin is loose, and the positioning cone pin is re-tightened, the ghosting failure after printing is eliminated.
Author: Deng Pengfei printing plant in Putian County, Fujian
Author: Deng Pengfei printing plant in Putian County, Fujian
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