Printing is a familiar process, but in the printing process, there will be various problems, including printing double shadow, which is one of the common problems in the printing production process. Then, what should be done if double shadow occurs in printing? Jinan printing and packaging factory will explain the problems for you.
There are many reasons for the double shadow when the handwriting of the printing plate is painted here, but the direct reason is that the surface of the fine handwriting is not smooth and uneven, or the printing is caused by pressure. In order to achieve a satisfactory printing effect in production due to factors such as poor ink transfer of the plate, it is required that the technical equipment, printing plate, cardboard, ink and auxiliary materials of the workers be properly matched.
The pressure here is divided into upper pressure and lower pressure. The upper pressure refers to the gap between the anilox roller and the printing wheel, and the lower pressure refers to the gap between the printing wheel and the printing press wheel. When the pressure is high, the clearance is small; when the pressure is low, the clearance is large. The effect of overpressure and overpressure is different.
When double shadows appear, it is necessary to carefully observe the printing effect. If double shadows appear around the handwriting strokes, it is caused by excessive upward pressure. The upward pressure should be appropriately reduced, that is, the gap between the anilox roller and the printing wheel should be appropriately enlarged. The direction of paper feeding should prevail. If double shadows appear below the direction of paper feeding, it is caused by excessive downward pressure. To reduce the press down properly, that is, to increase the gap between the printing wheels, the effect will be improved.
In the actual production process, we often encounter the situation of the field version and the small print. During the printing process, if we want to print the field version flat and full, the pressure must be appropriately greater, but at the same time, the small print will have a double image.
In addition to the above factors, there are other factors, such as poor transfer of ink itself, uneven paperboard and uneven compressive strength. When printing, to achieve the effect of bright color, fullness and good coverage, the first consideration is to adjust the parameters of the equipment, including the pressure. Although the cushion can play a good role in cushioning, it still cannot fundamentally avoid the possibility of double shadows.
If you want to produce beautiful printed products, you need to pay much attention to printing. Of course, you need to pay attention not only to printing but also to design. The above is the solution to the problem of printing double shadow. You should pay more attention to printing. For more information, please visit our website http://www.xinfengyinshua.cn Consult.济南印刷厂讲解的内容 更多的内容 请咨询公司官网http://www.xinfengyinshua.cn/