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1 The wet performance of the plate is reduced. The amount of fountain solution must be increased in order to maintain the ink balance.
2 The moisture stored on the surface of the printing plate is reduced, and the amount of colloids adsorbed on the surface of the printing plate is reduced. If the printing is stopped temporarily for a short time, it is easy to get dirty when the printing is not performed, which brings great inconvenience to the production. Coarse surface wear is more serious. It is necessary to change the plate.
Rough surface of blank part of printing plate is prone to failure
After a printing plate has been printed for a long time, the roughened surface of the blank part may gradually be flattened, resulting in: