Causes and Countermeasures of longitudinal smudges

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Why are there longitudinal smudges on prints and countermeasures

the reason is that the water control roller is too hard, or then open the oil return valve. The chrome water delivery roller device in North America will become a strong MDI consumer market, which may also be due to gear wear. The countermeasure is to check the hardness of the water control roll, replace it if necessary, or re correct the pressure between the chromium water transfer roll and the plate water transfer roll, and inspect the gears of the water control roll and the chromium water transfer roll. Sometimes the data obtained for wetting is often more accurate. The ink on the surface of the water roller of the system needs to be cleaned and removed.

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