Colorants for inks include pigments and dyes. Pigments are divided into organic pigments and

inorganic pigments. Organic pigments have bright hues, strong coloring power, and short drying

time. They are widely used in inks. Colorants are the main components of inks. The color of inks

is determined by them. It can give inks Different colors and color concentrations, and make

the ink have a certain viscosity and dryness.

The change process of the ink from the fluid state to the solid state is called the drying of the ink,

and the time required to complete this process is called the drying time. Short drying time means

fast ink drying and long drying time means slow ink drying. The drying speed of the ink has

a great influence on the quality of the printed matter. If the drying is too fast, the ink will be

skinned and pasted on the surface of the printing plate,

The adhesion of the ink film on the substrate is called the adhesion fastness of the ink. In plastic

gravure printing, there are many factors that affect the adhesion fastness of ink on the surface of

the substrate. Only by comprehensive analysis and evaluation of ink components, solvent

properties, and substrate properties can the ink’s adhesion fastness be fundamentally improved.

The test of ink adhesion fastness is generally measured by scotch tape sticking and pulling.

More and more glass industries use uv flatbed printers to print and process glass. What are the

advantages of printing glass with UV flatbed printers? Glass is an ancient building material.

With the rapid improvement of modern technology and the rapid development of application

technology. As a professional printer for printing various glass materials, the glass UV flatbed

printer can print various patterns you like on tempered glass, plexiglass, and embossed glass.

As the main solvent of ink, water exists in a strict ratio. Adding water at will increases

the proportion of water and dilutes the ink. In fact, it changes the reasonable proportion of

various components in the ink and destroys the original ink. performance. Therefore,

it is a wrong operation to add water to ink at will, which will inevitably affect the quality of

printed products. Too much water is added, resulting in a decrease in the viscosity of

the ink

The advantage of uv ink lies in the characteristics of instant curing, and the fast curing speed

is very beneficial to the curing and film formation of uv ink. When the speed of the inkjet system

reaches very high speed, uv curing can show strong competitiveness. In order to cure quickly,

uv inks need to use high-functionality curing materials, but due to low viscosity requirements,

a large amount of low-functional monomers are used

The viscosity of water-based ink is a very important property in ink fluidity. The viscosity is mainly

determined by the components of the ink itself. If the viscosity of the ink binder is high, the viscosity

of the ink is also high, the type and amount of solvent in the ink, the proportion of the pigment,

the particle size and its dispersion in the binder, the sum of these factors forms the difference

in ink viscosity . If the amount of pigment is large.

Uv ink does not use any solvent, does not produce solvent volatilization during the printing

process, which is beneficial to environmental protection and the personal health of workers,

has good stability during the printing process, fast drying speed, saves heat energy, and

the reproducibility of color density is better than ordinary Ink, with excellent abrasion resistance,

water resistance, oil resistance and solvent resistance, etc.

First of all, there are several problems to consider, mainly the ink problem, whether it is

expired or the storage time is very long, both of which will affect the precipitation of

the ink pigment, the solution is to shake the ink cartridge at a room temperature not lower

than 10 degrees to fully mix the pigment . Too many bubbles in water-based ink will cause

white spots, trachoma, water lines and other phenomena on the surface of the printed

matter.

The cross-linking density of conventional uv ink after curing is too large, which is easy to

cause hardness and brittleness, that is, poor flexibility. Therefore, many materials are required

not to be excessively curled after being printed by a uv printer, so as not to cause the ink layer

to break. On the other hand, the viscosity of oligomers in uv inks is generally very high,

and active diluents need to be added to reduce the viscosity.

Water-based uv ink not only inherits the advantages of traditional inks, but also has high

environmental protection value of water-based inks. Compared with traditional oil-based

photo-curable inks, it has greatly improved in all aspects and has many obvious advantages:

environmental protection and safety. Protect the environment and personal safety. Overprinting

is good, but water-based uv inks also have disadvantages. Water-based uv inks need to

consume more energy when drying.

Inkjet inks can be roughly divided into water-based inks, solvent-based inks, and uv-curable inkjet

inks according to their main components. The main characteristics of water-based ink are low cost,

no pollution, and bright colors, but because of the slow volatilization rate of water, the main

component of water-based ink, the inkjet picture made by water-based ink is not easy to dry

and be absorbed by the medium.