The flexible printing of high-line corrugated paper is […]
The flexible printing of high-line corrugated paper is a cooperative process of an integrated system, which requires the adjustment and coordination of various related links to achieve a relatively optimal value. Such as plate making, ink, corrugated paper and cardboard, printing equipment, printing technology and other links are very important and must be well coordinated. How to realize the flexible printing of high-line corrugated paper? The key technologies are:
In terms of flexible platemaking, determine the best solution that can not only be suitable for printing, but also reflect the product design effect.
1. Determine printing suitability conditions
First, we must understand the situation of printing equipment. For example, the color of the unit, the type and line of the anilox roller, the basic conditions of the paper feeding system and the doctor blade system. There are also paper types, such as white paper or coated paper. A set of test plates for testing the suitability of the printing press can be provided under conditions. It includes ladder ruler strips for testing the expansion of different network cables and dots in the flexible version, color blocks for measuring the solid density value of ink, simple color chromatography overprinted with different dot ratios, Yin and Yang characters and lines of different font sizes, modules for measuring register errors, and Let's observe the pressure bar of the printing equilibrium pressure and so on. The test plate is required to be completed under normal production conditions such as normal printing paperboard, standard production of water-based ink, normal printing pressure and vehicle speed. Of course, you can change some printing conditions to get different test samples. By analyzing the test samples, we can get the printability of this type of printer under normal conditions. It can be obtained the dot expansion, curve, solid density of water-based ink, hue value, the impact of dots on the screen, the influence of color sequence, the restoration of fine lines, overprint errors, and the pressure of printing equilibrium.
Combined with the test data obtained above and the printing effect of the control test sample, a color matching management system for this printer can be established, such as the establishment of a dot compensation curve for screen expansion, screen color and gannana curve correction, and proofing color simulation. And matches and much more.