Quick drying ink used for ink-jet printing direct plate making as well as preparation method and application thereof

Abstract

The invention relates to quick drying ink used for printing plate making, in particular to quick drying ink used for ink-jet printing direct plate making and a preparation method thereof. In the quick drying ink, 0.1-35wt% of thermoplastic resin, 0.1-20wt% of curing agent, 0.01-10wt% of nano-scale dye and / or micron-scale dye and the balance of organic solvent are mixed, and filtered to remove insoluble particles and impurities in the mixed liquor to obtain the quick drying ink. The quick drying ink is sprayed onto the surface of a printing plate through an ink-jet printer controlled by a computer to form images, then the printing plate is heated to 60-300 DEG C, and the thermoplastic resin is cross-linked and cured under the effect of the curing agent in the quick drying ink, so the drying temperature is reduced, and simultaneously the wiping capacity of resistant cleaning plate paste containing alcohol of the image part of the obtained printing plate is improved; and the obtained printing plate has good printing printability and higher printing resistance in computer printing, and the image resolution of printed matter is better.

Description

technical field [0001] The invention relates to the field of printing plate-making inks, in particular to quick-drying inks for printing plate-making, and more particularly to quick-drying inks for inkjet printing direct plate-making technology and a preparation method thereof. Background technique [0002] Inkjet Computer To Plate (Inkjet Computer To Plate) is a plate-making technology that uses an inkjet printing device to spray ink on a metal plate or a polymer plate to form an image. The ink used in this technology is generally solvent-based ink. In CN200710118701.5, an inkjet printing device is used to directly print plate-making ink on a blank plate base to make a printing plate, but the printing plate produced by this technology has low printing durability. The study found that the interaction between the ink and the plate base plays a decisive role in the suitability of the machine printing on the plate base, the printing force of the printing plate and the resolutio...

AI Technical Summary

Problems solved by technology

However, the solvent of the ink evaporates slowly and needs a higher temperature to dry, and when the printing plate is printed on the machine, the image and text area in the printing plate are prone to image drop when wiped with alcohol-containing plate cleaning paste, which reduces the quality of printing , which affects the further improvement of printing plate durability, and the resolution of the image is also greatly affected