Application of filters in printing

With the popularization of IT and digitalization, the necessity of color management has increased. Even if has considered the color reproduction and the dot generation and adds the net to make the various color printing plate, the printing dot expansion and the stable reproduction, is also the quality management premise.
Dot expansion is affected by printing conditions, printing materials and other reasons. Therefore, error management has become an important element, which must be standardized and applied. Comparing the absolute amount of dot expansion, the size of the error becomes a problem. The standardization of printing conditions has carried out a variety of types of curves, holding the different color version of dot expansion curve is the starting point of management. The main reasons for the error are as follows:
(1) lining is the basic reason, which requires the implementation of standardization including blanket quality.
(2) printing machinery, seven water ferrous sulfate to maintain ink characteristics of the temperature control is very important. The temperature control method of ink roller and ink bucket roller has been widely used. Ensure the stability of ink transfer by maintaining the set temperature. The matching compactness of the roller is also very important in this respect, have adopted matching compactness tracking structure (to maintain a certain pressure) to frame the roller.
In addition, because the fountain solution is used, it is equipped with auxiliary devices (pH, conductivity, temperature control device and automatic defiler of the fountain solution -- filter) to maintain the characteristics of liquid H. To maintain the stability of ink transfer, is a very important factor.
(3) the properties of fountain solution and ink balance, hebei plate and frame filter press is the most important factor in high quality printing. In the mechanical aspect, it is developed to reciprocating feed water → dageren method (the first inking roller and water roller are both used) → inking roller and water roller are independent. This is with the help of the fountain liquid film formation, help to maintain dot expansion, dot reproducibility, ink supply in the best printing characteristics of the structure.
(4) although it is not due to mechanical reasons, in order to keep the printing quality stable at a high grade, the printing process design is very important after the density benchmark is determined. The printing density will certainly affect the color reproduction. Aiming at the minimum error, the constant temperature of the machine and the standardization of printing conditions become the key points.
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