In theory, the closer the printing conditions of the screen printing ink to the printing conditions when printing with the ink, the higher the accuracy of the screen printing ink. However, due to limited conditions, there are still many differences between the two, such as: printing speed, viewing color environment, printing roller pressure, etc. are impossible to unify, as long as the four parts are controlled, it can certainly be greatly Improve the accuracy of the tinting of screen printing inks.

Screen printing inks have a good color. When printing, they often have errors with standard colors. This is a problem that is difficult to avoid completely. It can only reduce the color difference to a lower limit. What causes this problem and how to control it? How to improve the accuracy of tinting ink coloring?

There are four main points to note when improving the accuracy of screen printing inks:

1. Printing method: Most of the screen printing inks are imported from the United Kingdom. The mesh of the machine is on a flat plate. The printing is carried out by a circular embossing roller with a printing film. The printing machine is round. In the rounding mode, the mesh is on the rotating circumferential roller. The number of lines, angles, etc. of the two types of meshes are quite different, which makes the same ink, in the two printing modes, there is no small difference, sometimes not only the problem of dark color, but It is the effect that the hue, the brightness, etc. will bring a big difference. Some small factories use the ink stick to match the sample, which is even worse. Using the proofing machine of the plate making factory to match the color, the effect will be much better than that of the imported small printing machine, but the price is almost the same. This proofing machine can be made into the same version of the printing factory, and can design different levels and shades of printing according to the needs. The pattern, which makes the printing method basically the same as the printing house, and an important factor affecting the hue - the printing plate, is the same as the printing house.

2. Version depth: Different prints have different depths, and the understanding or estimation of the screen printing ink used by the screen printing ink also affects the accuracy of the color correction. Obviously, if the screen printing ink is printed with a 45 μm deep plate, and the customer's version is much smaller than 45 μm, the printed color becomes lighter, and vice versa. Some people think that the ink is adjusted according to the standard ink provided by the user. The depth of the plate can be ignored. In fact, this is a theoretical view, but it is not the case in practice. From the theory, the same two inks (such as splitting a cup of ink into two), whether the plate is deep and shallow (other conditions are the same), the hue is consistent. However, in actual color grading, it is impossible to match the same ink, so there is often such a phenomenon; sometimes the printed version is closer to the color (can meet customer requirements), but if the version is printed, the color is It's a lot worse, so it's important to master the depth of the version. If the customer's version is deep, you must use a deeper version to print the color.

3. Viscosity: The printing viscosity of the screen printing ink toning color should be as consistent as possible with the printing viscosity when the printing factory prints the ink. The farther the difference between the two, the greater the color difference. The screen printing ink is used for 22s, while the customer uses 35s. At this time, the color is definitely much deeper, and vice versa. Some screen printing inks do not pay much attention to this problem. Regardless of the viscosity of the printing plant, the uniform viscosity is compared with the customer's standard sample (with ink and print), which causes a large color difference.

4. Printing materials: The materials used in screen printing inks for color and printing (including other processes) will also cause large chromatic aberrations. Some inks will be printed with a layer of white ink that will be closer to the customer's print, and some will be the opposite. Some ink customers do not change much after compounding, and some of them change very much, such as some transparent colors. Therefore, when screen printing ink is toned, it is necessary to figure out the customer's process. The basic ones include: whether to print the white ink base, what materials to composite, Whether it is glazing oil.