Nano-level pigment-type ink-jet ink stock, and its manufacturing method

Abstract

The invention relates to nanometer dye type jet ink raw liquor and the manufacture method. It contains 16-20 portions dye, 5-25 portions auxiliary agent, 5-10 portions dispersing agent, 2-5 portions emulsifier, 5-15 portions wetting agent, 0.03 portions antiseptic and 30-40 portions deionized water. The method includes the following steps: adding deionized water into pre-dispersing boiler, whisking and adding antiseptic, mixing; adding auxiliary, dispersing agent, emulsifier, wetting agent, and whisking; adding dye, taking fully whisking and mixing; taking unltramicro grinding until the diameter of particle in nanometer grade, stopping grinding and discharging. The invention has the advantages of light fastness, water proof, acid resistant, non toxicity, etc.

Description

technical field [0001] The invention relates to a stock solution of ink, in particular to a stock solution of nanoscale pigment-type inkjet ink and a manufacturing method thereof, belonging to the technical field of printing ink. Background technique [0002] Most of the inkjet inks sold in domestic and foreign markets are dye-based inks. The obvious defects of dye-based inks are: 1. They are not fast to light, and their fading is very obvious after exposure to light, so they cannot be used for archiving. ②It is not water-resistant, and the printed documents and drawings will dissolve the dye again in contact with water, making the writing lines blurred and affecting the effect. ③ The dye component is easy to "crystallize" and cause the inkjet ink head to be blocked. At present, countries such as Europe, America and Japan are converting toxic and highly polluting dye-based inkjet inks to pigment-based inks. [0003] The advantage of pigment-based ink lies in its excellent ...

AI Technical Summary

Problems solved by technology

[0002] Most of the inkjet inks sold in the domestic and foreign markets are dye-based inks. The obvious defects of dye-based inks are: ① not fast to light, and the fading is very obvious after being exposed to light, so it cannot be used for archiving and preservation

②It is not water-resistant, and the printed documents and drawings will dissolve the dye again in contact with water, making the writing lines blurred and affecting the effect

③The dye component is easy to "crystallize" and cause the inkjet ink head to be clogged

[0003] The advantage of pigment-based ink is its excellent water fastness and light fastness, but ordinary pigment-based ink has a particle size of the pigment, which affects its permeability and prolongs the drying time

Nano-scale micro-solid pigment inks can effectively solve problems such as fading, bleeding, and ink head clogging. However, the use of ordinary production processes, formulas, and crushing equipment cannot truly achieve nano-sized pigment particles, especially for black inks. ink, the above technical problems have not been properly resolved

When the pigment particles are small to a certain extent, their specific surface area doubles, the gravitational force between the particles will increase greatly, and it is easy to agglomerate. With the increase of storage time, the particles will also become larger. There will be clogged nozzle holes (the hole of high-definition inkjet printers is 1-2 microns), resulting in abnormal ink output and seriously affecting the quality of inkjet printing

The particle size of the pigment is smaller than D 50 =50~70nm, its hiding property will decrease, showing transparency, resulting in a decrease in its color density