Newspaper printing process quality control of the core is two Ping-uniform. " Even the gray balance control and the ink-water balance control, a uniform is the uniformity of the ink [poster printing plant].

To obtain the correct gray balance, need to understand the characteristics of the ink and paper used. The general principle is to determine the proportion of outlets of the three-color: yellow newsprint minimum magenta, yellow dot than Huang bigger, and outlets for the largest proportion. As for the tri-color dot in the end to determine the proportion of the number, according to the facts and circumstances of each printing summed up the the gray balance point line with their actual data

In after determine the colors Sites proportion, made of gray balance control strip, further comprising the black control area to determine a standard gray axis brought newspapers. Pressroom during the printing process, as a standard gray balance control strip, adjusting the amount of the tri-color ink of the ink, so that the gray balance control strip rendered visually neutral gray, and visually consistent with the standard gray axis can be controlled color color newspaper printing process to achieve a more ideal gray balance

In the newspaper printing process, ink-water balance overall control is good or bad or not will directly affect the quality of the printing of newspapers. Fountain solution contained in the ink-water balance in a certain speed and print pressure, in order to ensure the normal production of the newspaper printing quality and newspapers as a precondition to balance the ink on the plate, with a minimum of fountain solution, the ink emulsion between 15% and 26%

From a practical point of view, the absolute balance of ink is almost impossible, and the many factors that affect the balance of ink, it is difficult to have a common and precise quantitative control standards. In printing ink from unbalanced to balanced to unbalanced, and then adjust to a new equilibrium, which is adjusted with a variety of changes in conditions in the printing process, the operator mastered the ink-water balance basic principles, also deal with the various situations encountered in the operation carried out in a timely and correct judgment
The ink uniformity depends on the operator to adjust the amount of ink level. During the quantization control, according to the national newspaper printing quality standards to determine the value of the density field, field title on the densitometer forum density control within the scope of licensed

Gray balance control, ink-water balance control and uniformity control of ink these three are closely linked, the two Ping uniform "control grasp the overall quality of the newspaper printing