Color management method and device of maximized uncoated paper printing color gamut

Abstract

The invention discloses a color management method and device of a maximized uncoated paper printing color gamut. The method comprises the following steps: (1) setting a dot shape to be compound screening through prepress setting; (2) increasing dots for reducing CMYK to 13%-16% through prepress compensating curve setting for increasing image contrast level; (3) increasing the density values of C,M, Y and K to 1.20-1.25, 1.20-1.25, 0.95 and 1.25-1.30 separately for increasing color saturation; (4) increasing a rubber blanket by adjusting the press setting for increasing the pressure between apress tape cylinder and an impression cylinder and improving the ink absorption performance of uncoated paper; and (5) adding 2%-4% of viscosity reducers in amount to original color ink by adjusting CMY ink viscosity. According to the color management method disclosed by the invention, the inking amount is increased by improving the paper ink absorbency, and the contrast level is increased by matching with the prepress treatment for increasing the color gamut. The printing color gamut is increased by 30% than the printing color gamut in ISO, so that the publication and production are convenient, and the uncoated paper production is easy apply; the manufacturing procedures of coated paper and the cost are reduced, and the method is friendly-environment.

Description

technical field [0001] The invention relates to the technology in the field of printing, in particular to a color management method and device for maximizing the printing color gamut of uncoated paper. Background technique [0002] The production of coated paper is to apply water-based paint on non-coated paper to improve the surface performance and gloss of the paper, to better spread the ink during printing, and to present the color gamut; when printing color patterns on the surface of non-coated paper, Standard four-color inks are mainly used. The main factors that affect the color of the paper are the roughness (surface properties), gloss and ink absorption of the paper. The whiteness of the paper has little effect on the color gamut. [0003] Such as figure 1 Shown is the color gamut comparison chart of coated paper and uncoated paper based on ISO12647-2, from figure 1 It can be seen that the color gamut of non-coated paper is obviously smaller, because the design and...

AI Technical Summary

Problems solved by technology

[0003] like figure 1 Shown is the color gamut comparison chart of coated paper and uncoated paper based on ISO12647-2, from figure 1 It can be seen that the color gamut of non-coated paper is obviously small, because the design and production are based on coated paper, and this color gamut gap is not conducive to expressing colorful artworks and reproducing design intentions

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