Several common digital printing inks introduced

1. Dry powder digital printing ink

Dry powder digital printing ink is a dry powdered ink formed by mixing pigment charge particles and a fusible resin with pigment particles. The negatively charged toner is absorbed by the exposed portion to form an image. The toner image transferred to the paper is heated and the resin in the toner is melted and fixed on the substrate to form an image.

2. Liquid digital printing ink

Liquid digital printing inks are often used for ink jet printing, and the type of ink is related to the structure of the ink jet head. The ink jet heads can be divided into two types, thermal compression type and piezoelectric type. Piezoelectric types have two types, high precision and low precision. The nozzles of EPS0N belong to the high-precision nozzles Xaar and Spectra nozzles are low-precision nozzles. High-precision nozzles use water-based dyes or pigment inks. The latter uses mostly solvent-based pigment inks.

Unlike traditional inks. The curing of the electronic liquid ink on the medium does not depend on the drying time of the ink film. Instead, it encounters a high temperature (130°C) blanket that immediately cures on the blanket. The ink graphic on the blanket is 100% transferred to paper or other media. on the other hand. The basic material of the electronic liquid ink is a novel resin material whose microscopic shape is a polygon. Under pressure, unlike conventional inks, it is not easy to diffuse, but it is cured immediately after the contact with paper or other media to make the printed image more clear. Dots are slightly blurred and diffused.

Electronic liquid inks are classified into aqueous inks and oily (solvent) inks. Water-based inks consist of solvents, colorants, surfactant pH modifiers, driers, and the necessary additions. For hot-press inkjet printing systems, only aqueous inks can be used. Drop-on-demand inks are also generally aqueous based inks. Oily (solvent type) ink consists of colorant solvent, dispersed 3, J~n other modifiers.

Solid state digital printing ink

Solid-state digital printing inks are mainly used in ink-jet printing. In the normal state, the ink is heated when it is printed in solid state, and the viscosity is reduced and then ejected onto the surface of the substrate. Solid-state digital printing inks consist of colorants, charge carriers, viscosity control agents, and carriers.

4. Electronic ink

Electronic ink is a special kind of ink used for printing and coating on a special film-based material as a display. The diameter of the electronic ink is encapsulated in nanometer size. There are many positively charged white particles and negatively charged black particles in the microcapsules and are distributed in the transparent liquid within the microcapsules. When the microcapsules are charged positively. Positively charged particles gather toward the viewer. The display is white and it is charged negatively. The negatively charged black particles gather on the observer side. And show black. The position of the particles and the color of the display are controlled by the electric field, and the control electric field is generated by the high resolution display array substrate.
5.UV/EB ink

The so-called UV / EB ink is the use of UV-curing or electron beam energy curing ink, UV / EB ink radiation-curable ink in inkjet printing applications are increasingly widespread. The most prominent feature of UV inks in digital printing is good stability. The advantage of curing only under UV light can effectively prevent the print head from jamming. Extend the actual life of the printhead. But the inadequacies are. Printing with UV/EB inks will result in slower printing speeds. For example, restrictions on the ink supply chain and the speed at which a large amount of ink passes through the print head. At present, Xennla's new XenJet Vivide series of CMYK pigmented uV curing inks has been certified by Xaar. This new ink was used on the Omnidot 760 print head.

Nowadays, research on digital printing inks is on the rise in the world. Digital printer manufacturers such as Canon, Hew Iett Packard, EPSON Scitex Xeikon, HP Indigo, etc. have researched and developed digital products adapted to their system characteristics based on the characteristics of their own digital printing machines. Printing ink. In addition, the world's other famous ink manufacturers. Companies such as DIC, Sun Chemical, Flint, Sakata Inx Corp and others have also started to engage in the development and production of digital printing inks. It is believed that with the universal use of digital printing presses, research and development of digital printing inks will be more in-depth. The new digital printing 5a ink will continue to appear.