Factors affecting printing quality
(1) rubber cloth
Air cushion blanket and ordinary blanket will affect the quality of printing. When they are in contact with a plate, because the blanket has adsorption properties, will absorb the plate surface of the fountain solution. In the printing process, it is necessary to supplement the fountain solution in time to avoid imbalance.
(2) the water roll
The water roller is in direct contact with the plate and supplies the running liquid, its contact pressure is too heavy will damage the image. If the ink coating is not uniform, the printing quality will be poor. If the contact pressure is too light, it will also cause the embellish coating abnormal, the formation of the “flower version” phenomenon.
The graphic area determines how much of the fountain solution is needed. If the picture and text area are large, the relative blank area is small. The area of the text and text is large, the relative blank area is small; The picture and text area are small, the relative blank area is big. Generally speaking, large areas require less, and conversely, more fluid.
(3) Ink thickness
Ink layer thickness and the amount of fountain solution has a relationship. There are two ways to increase the thickness of the printing ink layer: one is the size of the fountain solution, increase ink volume; Second, the amount of ink unchanged, reduce the volume of embellishing solution.
These two ways of its truth are the same, is to improve the content of ink, reduce the layout of ink in the content of small water droplets, thus achieving the purpose of increasing the thickness of ink.