In the printing process, a key indicator that people often pay attention to is overprinting, because waste products caused by inaccurate overprinting often account for a large proportion of all waste products. Although the flexo printing machine manufacturers have provided a good basis for accurate overprinting in the design and processing process, and the automatic monitoring system has also provided a guarantee for accurate overprinting, but the operator's technical level and proficiency also have a great influence on the overprinting accuracy . If you can make some adjustments for the convenience of overprinting when designing ink drawings, you can greatly reduce the difficulty of printing and reduce the rate of waste.
The easiest way is to use reverse white characters when designing the original ink manuscript, or hollow out between the two colors to form a reverse white outline, or you can cover the third slightly thicker at the edges of the two colors overprint Dark contour lines, for the printing of finer prints, trapping technology can be used, the amount of trapping depends on the accuracy of the printing press, the quality of the paper used for printing and the level of the operator. Trap processing is easy to implement on a computer. If there is no computer, only the ready-made dichroic film, you can use a special trapping processor (TrappingModifier), enter the amount of trapping amount, the machine will automatically generate a trapped processing Film. If there is no trapping processor, you can put a transparent spacer between the color separation film and the copy film and expose it with a single point light source copy machine, and you can also get a film with similar effects.
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