Mainly for the size of the substrate, printing ink with small paper flexibility first is conducive to registration.Different printing color order will affect the final tone, which generally depends on the characteristics of the printed matter.Color Sequence and Overprint Efficiency of Newspaper Printing Large area post printing, unless the ink used has high opacity, because the transfer ability of the ink on the paper surface is much better than that on the ink film. If a small area is printed first and then a large area is printed, the overprint part is directly printed on the paper for a small area, and the ink transfer is good, so the overprint effect is good.Color Sequence and Overprint Efficiency of Newspaper Printing On the contrary, if you print a large area first and then a small area, although the large area transfer is good, for a small area, the printing ink is all stacked on another color (large area) ink film, and the color performance is poor. For the overall effect, it is not as good as the former.Color Sequence and Overprint Efficiency of Newspaper Printing

The thixotropy of the printing screen plate is required to be slightly larger, while the thixotropy of the printing ink of the large-area field plate should be slightly smaller, so as to better improve the printing quality.Solution of Discoloration in Gold Silver Ink Printing To sum up, ink thixotropy has a certain impact on printing, and there are many factors affecting ink thixotropy. Therefore, it is of great significance to correctly understand the thixotropy of ink and its related factors, take corresponding process and technical measures for appropriate control during printing, and keep the ink in a relatively stable state in the printing process, so as to effectively avoid the disadvantages of printing quality, and improve the printing efficiency and product printing quality.Solution of Discoloration in Gold Silver Ink Printing

Because the chemical properties of gold powder are generally not stable enough, it encounters acid and alkali. Carbonic acid gas and sulfide gas will produce different degrees of chemical changes. There are many reasons for gold ink discoloration.Solution of Discoloration in Gold Silver Ink Printing In order to ensure the quality of gold printing products, effective measures must be taken in gold ink preservation and printing to prevent gold ink discoloration. Generally, the following problems should be paid attention to:Solution of Discoloration in Gold Silver Ink Printing

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