The effect of paper on ink color

The effect of paper on ink color is mainly reflected in three aspects.

(1) Whiteness of paper: Paper with different whiteness (or with a certain color) has different effects on the color of the printing ink layer. For the same type of whiteboard paper, the whiteness is different, and the color difference of the printing ink layer is mainly reflected in the number of black ink components in the spot color ink, especially for the colors whose lightness is above 70, and the effect is particularly obvious, resulting in spot color ink. The ratio varies greatly. Therefore, in the actual production, the paper with the same whiteness should be printed as much as possible to reduce the influence of the whiteness of the paper on the printing color.

(2) Absorption: When the same ink is printed under the same conditions on paper with different absorbency, there will be different printing gloss. The structure of the paper determines that there are irregularities and voids formed by plant fibers on the surface of the paper. In order to obtain a good uniformity and smoothness of the paper surface, it is generally necessary to coat the surface of the paper with a coating of different thickness. The nature and thickness of the coating determine the absorbability of the ink on the surface of the paper. With different absorptive capacities, it is necessary to make the colors of printing ink layers different. Compared to coated paper, non-coated paper, black ink layer will appear dark, dull, and the color ink layer will drift, the color of the mix of cyan ink and magenta ink show the most obvious.

(3) Glossiness and smoothness: The glossiness of prints depends on the gloss and smoothness of the paper. The surface of the printing paper is a semi-glossy surface, especially coated paper.