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What factors affect printing color? _ Paper Professional

1 month ago Automobiles Buena Park   24 views

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Original title: What factors affect printing color? With the wide application of printing and packaging technology in daily life, consumers have higher and higher requirements for the quality of printed matter. Printing as a comprehensive technology, bright and pure color is the basic requirement of the quality of printed matter, this article shares several factors affecting the bright color of printed matter, hoping to be helpful to printing and packaging colleagues. 1 Paper whiteness and absorbency Whether the paper is white or not is the basis of whether the printed packaging is bright or not. Completely white paper can reflect nearly all the color light, while gray and black paper will absorb part of the color light, so that the hue, lightness and purity of the imprint are lost. If we analyze from the color degree, in the paper printed with pictures, in addition to the visual color formed by the spatial mixing of all kinds of dots through the additive color method, the surface color of the paper without dots (or patterns) actually participates in this spatial mixing. Gray paper is like adding a small amount of black to all kinds of ink, so the color ink with high purity can not be seen visually, showing a dark color. Practice has proved that if other conditions are exactly the same, the brightness of the picture printed on different whiteness paper is completely different. Analyze from the contrast of color and brightness. If only black characters are printed on white and flawless paper, because of the contrast between black and white, black characters are blacker and white paper is whiter,custom tailor tape, forming a sharp contrast, it can be inferred that as the basis of printing, the whiteness of paper is directly related to the bright color of imprints. Similarly, reddish paper makes imprints tend to be red; Cyan paper makes the print tend to be cyan, which needs to be considered when using color. In addition, the absorbency of the paper also has a great influence on the color. The absorbency of the paper will make the pigment together with the binder penetrate into the paper all the time. The imprint can not form a full enough ink layer on the paper surface, which will cause the loss of color saturation and make it difficult for the color to be bright. 2 Blending,retractable tape measure sewing, rolling and coating of color ink From the purity of the three elements of color, we can know that the saturation of color refers to the purity of color. To make the color bright, we should pay attention to the selection of color ink. In addition to the pure hue of the standard three primary colors ink, there are many principles that are the intermediate colors of the three primary colors. Their hue is consistent with the original manuscript, which is conducive to increasing the brightness of the imprint. Special attention should be paid to avoiding complementary colors. For example, when printing lush trees at first glance, the use of light yellow can make the printed leaves green. If dark yellow ink is used, the yellow ink contains red ink, which is the complementary color of green. The printed leaves are blackened and turbid, which does not reflect the breath of early spring, so they are not bright. Expand the full text In order to print brightly on the packaging products, printed tape measure ,mini tape measure, it is necessary to pay attention to the cleaning of the ink tank and ink roller, that is to say, when changing ink, it is necessary to prevent the color shift caused by the ink tank, ink roller and water stained with the previous printing color, especially when the dark color is replaced by light color, and when the black and blue are replaced by yellow, if we do not pay attention to the cleaning work, it will cause color shift. This will also affect the color of the packaging printing. 3 Complete reversion of network points When the dot is enlarged, the enlarged color has to reduce the thickness of the black layer, which makes the low tone and the solid part not thick, the color saturation is weakened, and the inherent color phase characteristics of the color can not be brought into play. If the clothes are printed, the clothes will look old, and if the scenery is printed, it will look like a rainy day. 4 Tinctorial strength, emulsification and dilution of ink Except in special cases where the color needs to be diluted. The tinting strength of color ink, the addition of auxiliary materials in the printing process to dilute the ink color or the addition of auxiliary materials to inhibit drying, and the large amount of ink emulsification may reduce the saturation of printing ink. After printing on the packaging products, the drying is slow, the permeability is strong, and the penetration time is long, that is, the imprinting ink layer is not thick, resulting in the imprinting color is not very bright. 5 Ink layer thickness Whether the thickness of the ink layer is just full is the key will be out of balance. Although the hue of the packaging printing product is close to that of the original manuscript, due to the thick ink layer of each color, the low-tone part is pasted and the high-tone part is flat,seamstress measuring tape, so that the printed picture is dull and dense, and the level is not clear, not to mention the effect of bright color. Source: Printers Return to Sohu to see more Responsible Editor:. tape-measure.com

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