How To Adjust The Color Of Silk Screen Printing?

The so-called color matching is to connect two or more colors, or use a small amount of colors in addition to the main color, to form a color combination. When the color ink is mixed before use, first expose the color to be prepared on the color sample separately, and correctly distinguish whether the original (or original) color is the primary color, the secondary color, or the multiple color. If it is a secondary color or a complex color, it is necessary to distinguish the ratio of the main color and the auxiliary color. Secondly, it is necessary to adjust the sample according to the hue indicated by the original manuscript. When the color difference is small or equal compared with the original manuscript, it can be deployed in large quantities, and the time should be short and the adjustment should be appropriate. Too little adjustment will cause work stoppage, and the ink hue will be different, which will affect the normal production; too much will cause unnecessary waste. Ink adjustment is usually carried out in a place where the light is stable or the light is not directly irradiated.

Pay attention to three points when adjusting silk screen inks:

a. When mixing inks, you should add as few inks of different colors as possible. The fewer types of inks, the better the mixing effect.

b. Adopt the principle of "from lighter to darker", no matter if you prepare light or bright colored inks, you should be careful when the hue is close to the model. It is best not to mix inks produced by different manufacturers. Try to use inks of different colors from the same manufacturer for color mixing. Otherwise, uneven tones will occur. In severe cases, agglomeration will occur and the ink will be scrapped.

c. Some screen printing inks are dried by drying. The light color is lighter after drying than the undried one, and the dark color is darker after drying. In addition, it is easy to overlook whether there is a difference in the color tone of the ink before and after drying during printing. Generally speaking, through natural drying (solvent volatilization ink), the substrate is plastic, metal, paper, glass, etc., and the color will not change; but if it is a ceramic color material, the color will only develop after burning and oxidation. , Can only be graded based on experience. As for the screen printing ink that is dried by thermosetting and light curing, the color changes in depth, as mentioned above. When the amount of ink adjustment is large, an ink adjustment machine can be used, and the color adjustment can be completed in a short time. The blending of light-colored inks is generally based on white inks, and appropriate colored inks are used. For example, light blue, mainly white ink, with a little blue (cyan); light red, mainly white ink, with a little red; gray, mainly white ink, with a little black; silver gray, mainly white ink, slightly Add silver paste and a trace of black ink. When preparing light-colored silk screen printing inks (printing materials), add as little white ink as possible, because white ink is highly active and it is easy to cause discoloration of other colors.

To adjust the ink well, silk screen workers must:

a. Understand the various specifications and performance of the ink; make the matched ink suitable for production needs.

b. Master the basic knowledge of chromatology, and use it freely in ink adjustment.

c. Analyze the printing color and process technology, find out the color sequence of multiple sets of colors, so as to avoid the color sequence is wrong, the two colors are miscible, and the color changes.

d. Pay attention to the brightness of the ink color when adjusting the ink. If the brightness is large, the original color should be used as much as possible, otherwise the ink will be "grayed" and the original color brightness will be reduced.