company news about Several main factors affecting printing quality cannot be ignored!

The main factors affecting printing quality:

   1. Blocking version. Dot clogging will cause the amount of ink transfer to decrease, and the color of the printed matter will change. When blockage occurs, the printing plate should be cleaned with a solvent or a special cleaning agent, and corresponding measures should be taken for the cause of the blockage.

   2. The printing plate is worn out. The wear of the printing plate will make the dots smaller and shallower, thus affecting the ink loading capacity of the dots. The result of plate wear is an overall lightening of the color. Sometimes the wear of the white plate makes the amount of white ink insufficient, and the covering power of the base color is insufficient. At this time, the production should be stopped for plate change, and the old plate should be stripped again. If the plate cylinder uses the transition mesh wall to collapse and cannot be stripped, the plate must be re-made.

   3. The color of the pattern is inconsistent. When multiple patterns are arranged horizontally on the layout, the color of the patterns at the left and right ends of the printing plate may be inconsistent. During the plate making process, especially when the plate is full, the size of the dots tends to change from left to right. Therefore, attention should be paid to checking the difference in printing effect between the left and right ends of the plate cylinder.

   4. The rationality of the printing plate design. When designing the printing plate, the influence of the printing plate design on the printing process and post-press processing should be fully considered. For example, 80% and 5% of the colors in the jumping areas of the dots are prone to gradation and gradation, and changes should be taken in advance.

   5. Printing environment factors. If the room temperature of the printing workshop changes greatly, the flow state of the ink will change. The temperature and temperature of the general production workshop are controlled at a temperature of (23±5) degrees Celsius and a humidity of 60%±5%. In addition, when using ink in winter, it is necessary to preheat it in advance to increase the fluidity of the ink.

   6. Printing conditions. When the layout is blown by irregular wind, the printing speed and drying speed will change, which will cause the color of the printed matter to change. The above factors should be fully considered in the printing process