How to control chromatic aberration?

The purpose of color difference control is to ensure the consistency of pattern color within each batch of products or between batches. The consistency of hue can only be said to be relative, and absolute consistency of hue is impossible. How to achieve consistency in hue involves several factors. ZHONGSHAN LINYANG PLASTIC CO.LTD explains how to achieve consistent color. The color consistency is achieved through the ink. The hue of the ink is required to have no deviation. First of all, it is best to use the same batch of ink. Because of different batches of ink, although some hues have little change, some have changes, which requires a good control over the supply of raw materials. The consistency of the ink hue is the most basic requirement and an important condition. If the ink hue deviation is too large, it is difficult to control the hue consistency by other methods. When several colors are stacked together or the ink layer is thick, the hue The difference is obvious. Secondly, it is required to add less ink to the ink tray each time to keep adding new ink frequently, especially for some patterns with less ink. If too much ink is added at one time, the ink will be used for a long time without new ink being added. Its hue will change. For example, black ink that has been used for a long time is gray, not as pure as new ink, and red ink that has been used for a long time will become dark red, not as bright red as new ink. The viscosity of the ink is required to be consistent from beginning to end, and it is best to use a viscosity controller to control it. Consistent color achieved by the scraper The position where the scraper contacts the printing plate has a great influence on the color, especially the hue of the light texture, so it is required that the scraper is basically in the same position from beginning to end. When the pressure of the squeegee changes too much, it will affect the light screen printing color. Achieving color consistency through the printing plate The influence of the printing plate on the hue is mainly manifested in: 1. Blocking: At this time, the transfer amount of the ink is reduced, thereby affecting the hue. Therefore, it is necessary to clean the printing plate with de-powder so that it can be printed in a normal state. 2. Wear of the printing plate: When the number of printing plates is large, as the degree of wear increases, its hue will change, and generally it will become lighter. In order to solve this problem, if the printing batch is large and the varieties are printed in the field, you can dilute the ink in the new version, and then gradually reduce the degree of diluting as the printing volume increases, until it is no longer diluted. The control of hue is mostly to control the mixing effect of multiple colors. In the specific operation, it is necessary to accurately judge which color has changed and the mixed hue has changed. This is the premise. If it is a wrong judgment, it is impossible to put the hue in the correct direction. Combining the above-mentioned operations, it is possible to obtain a satisfactory degree of hue control.