Quick-drying inkjet printing material colorant receiving layer coating liquid

Abstract

The invention discloses a quick-drying coating liquid for a pigment receiving layer of an ink-jet printing material, and belongs to the technical field of ink-jet consumptive materials. The quick-drying coating liquid comprises, in percent by weight, 2-4% of polyvinyl alcohol, 0.5-1.5% of polyurethane, 0.5-1.5% of microporous granular polymethyl methacrylate, 42-52% of ethanol and the balance water. The quick-drying coating liquid for the pigment receiving layer of the ink-jet printing material contains no inorganic particles, and an ink-jet recording medium prepared by using the quick-dryingcoating liquid has good transparency, good gloss, high resolving power, a greatly-improved drying speed and reduced manufacturing cost.

Description

technical field [0001] The invention relates to an ink-jet printing coating liquid, in particular to a fast-drying ink-jet printing material color material receiving layer coating liquid, which belongs to the technical field of ink-jet consumables. Background technique [0002] The characteristics required for recording paper-like media for inkjet recording include: (1) quick-drying (high ink absorption speed), (2) appropriate and uniform ink dot diameter (no bleeding), (3) ) Good granularity, (4) High roundness of ink dots, (5) High color density, (6) High chroma (no color and dullness), (7) Good light resistance and gas resistance of printing parts, ( 8) The whiteness of the recording paper is high, (9) The preservation of the recording paper is good (no yellowing and coloring during long-term storage, and the image does not bleed during long-term storage), (10) Hard to deform, good dimensional stability (very curling Small), (11) The hardware runs well, etc. Furthermore...

AI Technical Summary

Problems solved by technology

[0012] However, the disadvantages of the technical solutions disclosed in the above-mentioned patent documents are: because they all contain inorganic particles, their transparency and gloss are affected

Because the particles themselves are opaque, and their solid body has no adsorption and color-fixing functions for the dyes in the ink, it must be achieved by adding a color-fixing agent, causing only the upper part of the particles on the surface of the coating to absorb in the ink. The dye contributes to the density. Most of the ink dyes are vertically penetrated below the opaque particles and are covered by the particles. Because the applied inorganic particles are all pure white opaque bodies, this part cannot play the role of the dye density. The effect of the dye density in the ink is low, even the density utilization rate is lower than 20%, which is why the absorbing density cannot be greatly improved. The direct consequence of this situation is that the printer must increase The amount of printing ink cannot realize the fast printing function, and most of the ink can not play its due role, resulting in the waste of ink consumables and low time efficiency for users. Obviously, the production cost has increased a lot; and because the inorganic matter is solid Bulk particles, themselves have poor adsorption to dyes, and the dyes in the caulking of the particles will migrate and diffuse to the surroundings with time, which will eventually lead to a decrease in the resolution of the product, which is why the edge of the inkjet printed image after two or three years It will become blurred and the reason for the decrease in resolution

In addition, because most of the technical solutions disclosed in the above-mentioned patent documents use water as a solvent, the drying speed is still insufficient, making the coating manufacturing cost high

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