A simple way to solve the problem of discoloration in Heidelberg presses

When we use Heidelberg presses, we may experience discoloration of prints after a period of use. In this case, the majority of our users of Heidelberg presses are unable to start, but also spend a lot of time and money. In this case, I would like to brief you on several methods that are more effective and hope to play a role in everyone's use.

1. First of all, we should check whether the design of our printed matter on the layout is reasonable. For example, we put a pattern with a relatively large amount of ink (or a superposition of four-color nets) on the dragging position. For this kind of layout design, it is definitely not conducive to our printing. For high-quality prints, we should place them in the mouth, which will facilitate the control of tooth decay on paper and make it easier to print prints that do not change color.

2. If there has been a situation where the printed matter is discolored, we do not begin to conclude that the problem of the next press itself, we should first find the reasons in the periphery of the press, we should first use a magnifying glass to observe the dots on the printing plate, check it If there has been a distortion of the outlets, if it is found that there have been distortions of the outlets on the printing plate, then we should check the movie and eliminate the problem when it is taken out.

3. After we have eliminated the film problem, we should check whether there is a problem with the ink system. We can use a very simple method to check the ink system. First we use the car wash water (can add water) to thoroughly clean the ink path. After parking, We should check whether there are white crystalline particles in the ink path. If we find that there is such a substance, then the discoloration that may occur is probably the partial discoloration of the printed matter produced by the crystalline material Stackel, which is often reflected more clearly. Brush product local color cast. After the car washes, we did not find any of these crystalline substances. We restarted the printing press and inked each ink roller. After we had inked, we closed the printing roller and the printing roller, checking if the pressure reached the standard. If not, I suggest that all the ink roller pressures be readjusted to a good level.

4. After the ink system has no problem, we check the condition of the waterway, adjust the pressure between the water roller, the metering roller, the water roller, and the water roller, and especially adjust the pressure of the intermediate roller. Under the condition of insufficient technology, the intermediate water roller should not be used during the printing process.

5. If there is no problem with the ink path, we should check whether the rubber pad is the standard. We suggest that the thickness of the pad should be 35 wires. The blanket is preferably the aluminum strip and the blanket is preferably new. of. The new blanket is best to be tightened again after a period of use.

6. If the heat still does not solve the discoloration problem after all these have been done, then we may want to consider the problem of the teeth. We should clean the toothpaste, and it is best to remove the springs for cleaning. Some of our factory's leaders Only know that cleaning tooth pads, do not know that cleaning teeth in fact so wrong. Check for the presence of dead teeth, use an efficient rust remover such as WD-40, and oil the teeth and shafts to ensure they are not dead.

7. Check the condition of the paper under the paper. This includes the adjustment of the paper wind, the flatness of the paper in the front gauge, the fit between the paper and the paper, the operation of the paper conveyor, and so on.

8. After we have done this, we can try and print. When we try to print, we have better choose a better coated paper and try to avoid the paper's impact on us. For thin paper, we have to reduce the amount of wind on the embossing. We have to open the right amount for thick paper.

9. After doing this, our printed matter may be able to solve the problem of discoloration. Of course, we cannot solve it. If we do these efforts, our printed materials will still be discolored and notify Heidelberg for repair as soon as possible. Let the problem be solved quickly.