How is the printing adaptability of the paper sheet in terms of ink absorption and color saturation?

The printing adaptability of paper has an important impact on color saturation in terms of ink absorption. Color saturation refers to the concentration and vividness of the color on the printed product. This characteristic determines the visual impact and overall quality of the printed product. Ink absorption directly affects how the ink spreads, penetrates and dries on the surface of the paper, thus affecting the final color performance. The following will discuss in detail the relationship between paper ink absorption and color saturation.

The ink absorption of paper sheet refers to the ability of paper to absorb ink. Paper with high ink absorption can quickly absorb ink and allow the ink to penetrate into the paper fibers; paper with low ink absorption mainly keeps the ink on the surface and reduces the penetration of ink. Ink absorption directly affects color saturation:

On this kind of paper, the ink penetrates into the paper, resulting in less ink remaining on the surface, and the color will appear dull and less saturated. As the ink enters the paper fibers, the color performance will become less vivid than that of paper with low ink absorption. High ink absorption paper is usually used in occasions with low printing requirements and fast speed, such as newsprint, low-end book and magazine printing, etc. Although the ink absorption of this kind of paper helps to dry quickly, it often sacrifices the saturation of the color.

The ink of low ink absorption paper mainly stays on the surface, which means that more pigments and dyes can be directly presented on the surface, producing bright colors and high saturation. This kind of paper is often used for high-quality color printing, such as advertising, packaging, art reproduction, etc. Low ink absorption paper can better present complex images and details, ensuring the vividness and richness of colors.

In order to improve the color saturation on high ink absorption paper, a coating is usually added to the surface of the paper. The coating treatment can control the penetration of ink and increase the amount of ink retention on the surface, thereby improving the saturation of the color.

Gloss coating forms a smooth film on the surface of the paper, making it difficult for ink to penetrate into the paper fibers, thereby increasing the ink density on the surface. Gloss coating can not only enhance the saturation of color, but also make the print more bright and visually impactful. This coating treatment is very suitable for high-quality color printing, especially in the advertising and packaging industries.

Although not as bright as gloss coating, matte coating can also effectively improve the saturation of color. Matt coating reduces reflection and is suitable for prints that require low reflectivity and soft color effects, such as high-end books, picture albums, etc. Matte coating allows paper to maintain high saturation while presenting a calm and elegant visual effect.

Different types of inks have different requirements for the ink absorption of paper. Choosing ink that matches the ink absorption of paper can effectively improve the saturation of color.

Oil-based ink performs well on low-ink absorption paper. Its viscosity allows the ink to be evenly distributed on the surface of the paper to produce bright colors. Oil-based ink is suitable for offset and gravure printing, especially in color printing, which can present high saturation and delicate color transitions.

Water-based ink does not perform as brightly as oil-based ink on high-ink absorption paper because water-based ink is more easily absorbed by paper, resulting in reduced color saturation. To compensate for this, suitable paper can be selected or surface coating can be applied to control the diffusion and penetration of water-based ink.

The drying process of UV ink is cured by ultraviolet rays rather than penetration. Therefore, it can also show highly saturated colors on low-ink absorption paper. UV ink is suitable for printed products that require high gloss and durability, such as high-end packaging, outdoor advertising, etc.

In the actual printing process, the ink absorption of paper is inseparable from the choice of printing process. Different printing processes have different requirements for the ink absorption of paper, which affects the color saturation.

Offset printing has high requirements for the ink absorption of paper, and usually uses low ink absorption paper to ensure color saturation and detail performance. Offset printing paper is often coated to achieve the best color presentation.

The paper used in flexographic printing has strong ink absorption and is suitable for the needs of fast drying. However, the high ink absorption of this paper will lead to reduced color saturation, so flexographic printing is usually not as good as offset printing when high-quality color printing is required.

Digital printing has various requirements for the ink absorption of paper, and the ink absorption of paper can be flexibly adjusted according to different printer types and ink selections. Digital printing can achieve good color performance on both high-ink absorption and low-ink absorption papers. Especially in inkjet printing, choosing the right paper type can significantly improve color saturation.

The effect of paper ink absorption on color saturation is an important aspect of printing adaptability. When selecting paper sheet, it is necessary to consider the effect of ink absorption on the color performance of the final printed product. Paper with low ink absorption usually provides higher color saturation and is suitable for high-quality color printing. On the other hand, although paper with high ink absorption dries quickly, it will cause the color saturation to decrease. Therefore, in order to obtain the ideal color effect in different printing projects, it is necessary to select the appropriate paper type according to specific needs and optimize it in combination with coating treatment, ink type and printing process.