The inspection found that the ink line does not appear at the gripping position of the printing plate, excluding the gripping and blanket factors; the whole version of the graphic is clear, there are no other stains, and the dirty version is excluded; checking the ink, the ink roller is seriously accumulating ink, and the ink volume is initially judged Big. So wash the printing plate and blanket, close the ink roller and print again, the ink line appears again after a few minutes. Wash the ink, reapply less ink, slightly reduce the amount of fountain solution, and then turn on the machine to solve the problem.
Cause of failure: The ink roller is too large, the pressure on the printing plate is heavy when inking, and a thick ink line is hit on the plate surface. Although the fountain solution has washed away some of the ink, it cannot wash the firmly adhered ink line completely go with.
Note: It is advisable to use small amounts of ink and water when inking the rotary machine, and add more if it is insufficient. Don't avoid heavy ink and water at the beginning, causing serious emulsification of ink and other failures.
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