1. The uneven tin plating layer on the surface of the tinplate raw material will cause the color of the metal lithography to appear different shades on metal image printing, and will also lead to uneven corrosion resistance, which will have a certain impact on the use value of the product. Therefore, like those poorly tinned tinplates, it will have a direct impact on the quality of printing on metal surface.
2. The printing will have a certain impact on the quality of metal image printing. In the process of printing PS plate, the distance between the intensity of the light source and the plate material, and the strength or weakness of the light source will have a greater impact on the digital printing on metal .
3. The dots are easy to be lost during digital printing on metal, especially the dots in the high-gloss area are easy to lose, so the viscosity of the printing ink is higher than that of the printing paper ink, and the fluidity of the printing ink is smaller than that of the printing paper ink. At the same time, because The iron sheet does not absorb or penetrate, so the water supply should be slightly