Ink-jet digital printing paper with gradient functional coating structure

A digital printing, gradient function technology, applied in coating, paper, papermaking, etc., can solve the problems of poor color reproduction, difficult drying, insufficient ink absorption ability, etc., to achieve the effect of solving poor color reproduction and improving ink absorption ability

Inactive Publication Date: 2020-12-22
BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This application proposes a novel gradient functional structure paper coating, which improves the ink absorption capacity and ink absorption rate of the paper, and solves the problems of poor color reproduction and difficult drying of inkjet digital printing paper due to insufficient ink absorption ability

Method used

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  • Ink-jet digital printing paper with gradient functional coating structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The paper base used is 70 grams of offset paper. Coating solution 1 is first applied from roll to roll to form a deep coating layer, and then coating solution 2 is sprayed on the surface of the dried coating deep layer. The mass percentage of coating solution 2 is composed of It is 70% polydimethylsiloxane, 30% water, adjust the pH value of the solution within the range of 8 to 8.5 with ammonia water, and obtain a sample with a gradient functional coating after drying. After inkjet digital printing, it is proved that the offset coating Cloth paper has better printing color reproduction.

Embodiment 2

[0019] The paper base used is 80 grams of coated paper. Coating solution 1 is first applied from roll to roll to form a deep coating layer, and then coating solution 2 is sprayed on the surface of the dried coating deep layer. Coating solution 2 is ethyl orthosilicate Ester 75%, water 25%, use ammonia water to adjust the pH value of the solution within the range of 8 to 8.5, and after drying, a sample with a gradient functional coating can be obtained. After inkjet digital printing, it is proved that the copper plate coated paper has good printing performance. Color reproduction.

Embodiment 3

[0021] The paper base used is 60 grams of offset paper. Coating solution 1 is first applied from roll to roll to form a deep coating layer, and then coating solution 2 is sprayed on the surface of the dried coating deep layer. Coating solution 2 is ethyl orthosilicate 85% ester, 15% water, adjust the pH value of the solution within the range of 8 to 8.5 with ammonia water, and obtain a sample with a gradient functional coating after drying. After inkjet digital printing, it is proved that the copperplate coated paper has better printing Color reproduction.

[0022] Based on the above embodiments, this application proposes an inkjet digital printing paper with a gradient functional coating structure, using a coating solution containing spherical particles to build a deep layer of coating with sufficient ink absorption capacity on the surface of the paper, Then spray the coating liquid to form a surface modification layer, improve the ink absorption ability of offset paper and c...

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PUM

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Abstract

The invention relates to ink-jet digital printing paper with the gradient functional coating structure; existing offset paper or coated paper is coated twice to form a gradient functional coating structure of a coating deep layer and a surface modification layer respectively, and the coating deep layer on the surface of the paper has enough large ink absorption capacity and fast absorption capacity. The surface modification layer located on the surface of the coating deep layer has the function of properly reducing the ink absorption rate of the paper, a gradient functional structure of the paper, the coating deep layer and the surface modification layer is formed, the ink absorption capacity of offset paper and coated paper for ink-jet digital printing is improved, so that the color rendition capacity of ink-jet digital printing and the drying speed of ink-jet ink drops are improved.

Description

technical field [0001] The application relates to an inkjet digital printing paper with a gradient functional coating structure, which belongs to the technical field of inkjet digital printing. Background technique [0002] In the traditional printing process, the paper absorbs ink in two steps. The first step is to transfer the ink to the paper surface and pores by the printing pressure at the moment of imprinting. The second step is to rely on the penetration of the ink itself to absorb ink. In the process of inkjet digital printing, there is almost no printing pressure, and the adhesion and transmission of ink on the coating surface mainly rely on the free imbibition of capillary force generated by the micro-nano-sized pores in the paper coating. In addition, in order to prevent clogging of expensive nozzles, compared with traditional printing inks, digital inkjet inks are water-based inks with low viscosity and low pigment content, resulting in low coloring degree on the...

Claims

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Application Information

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IPC IPC(8): D21H19/82D21H23/22
CPCD21H19/824D21H23/22
Inventor 罗世永李雪枚刘晓
Owner BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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