When printing, fiber or filler particles are dropped from the surface of the paper and piled on the graphic of the blanket, so that the quality of the print is reduced.
Reasons: (1) Poor paper quality. (2) The viscosity of the ink is high, or the viscosity is increased due to solvent evaporation in the ink. (3) Printing speed is too fast. Printing pressure is too high, causing excessive friction between the paper and the blanket.
Treatment method: (1) change paper. (2) Adding PM-1 varnish or PM-4 detackifier reduces the initial tack of the ink. (3) Adjust printing pressure and reduce printing speed.
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