The analysis of the phenomenon that irregular color of offset product and image breezing in printing process.
FLYING FO-SA
In the offset printing process, paper quality and printability directly affect the quality of printed matter. The sublimation offset printing ink printed on paper which as a carrier of the ink directly or indirectly, the surface smoothness is determined by the degree of contact with the rubber cloth or on the surface of the plate, and then affect the ink transferred on whether the image is clear, uniform and smooth.
At the time of printing and coining can be a very good contact with the plate by higher smoothness paper, to make the ink evenly transferred to the paper. When coining, lower smoothness paper printing density inhomogeneity increases, the ink is transferred to the paper will appear the phenomenon of uneven and image breezing.
Paper smoothness is low that can increase the use of ink on the machine and appropriate increase printing pressure to remedy, but these two methods have some limitations. When increase the use of ink, the ink layer thickening on the plate to change printed matter density, but will increase the possibility to strike-through. Appropriate increase the printing pressure, can make up for the phenomenon of image breezing and the uneven surface of printed matter, but easy to produce spot on the printed product that to increase printing pressure. If the surface of paper is too rough, also easy to make paper crushed.
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