If this material is used as the printing plate base for manual printing, it is necessary to increase the printing pressure and ink layer thickness, which can easily make the printed product sticky and dirty. Therefore, when printing on site, there is no need for a plywood base. Instead, a magnetic plate or other metal base should be used to make the printed ink layer thin and not dirty, which is beneficial for preventing sticking and dirt.
When printing instructions, the angle and height of the paper should be accurately adjusted based on the size of the printed product and the softness and hardness of the paper. Otherwise, the edge of the paper in the mouth of the printed product may easily rub against the imprint of the previous printed product, causing damage to the ink on the surface of the printed product. In addition, the printed sheets should be handled with care to prevent them from being moved or rubbed, causing sticking and dirt. The quantity of paper to be dried should be controlled according to the ink reception of the printing plate, to prevent heavy pressure and dirt. The determination of whether the printing ink layer is appropriate is mainly based on the uniform pressure on the printing plate, the uniform ink on the plate to ensure no exposure or false printing, and the consistency between the color of the printed product and the sample. If the printing pressure is uneven or insufficient, the glossiness of the printing paper is poor, the original color of the printed product is dark, and the ink color is too light, it is easy to misjudge the thickness of the printing ink layer. If the ink amount is blindly increased, it will cause the back of the printed product to become dirty due to the thick ink layer.
There are various reasons why manual printing can cause color printed materials to become sticky and dirty in printing. As long as we control the technology well, not only can we achieve good anti sticky and dirty effects, but also can improve the quality of printed products and production efficiency.
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