What causes the printing color difference of printing spot color ink?

What causes the printing color difference of printing spot color ink?

author: Uvink

2023-03-17

In order to improve the design and quality of printed matter, printing factories often use spot

color inks when printing trademarks, packaging, and promotional materials to ensure the color

consistency of printed matter and meet customer requirements, but there will always

be color differences in printing inks the question, why is this?

When printing, the uv ink and the ultraviolet rays irradiated by the LED lamp undergo a curing

reaction, which makes the UV ink dry and adhere to the surface of the object in an instant. In terms

of printing time, it can be done immediately, without some baking and drying operations, saving

manpower and time. If the printing speed of the ink increases with the printing speed, the contact

time between the printing surfaces will be shortened, and the ink transfer rate will be reduced.

Although the printing time will be shortened, it will also lead to a decline in printing quality.

In order to ensure full contact of the printing surface and improve the printing quality, it is required

to select an appropriate printing speed under a certain printing pressure to ensure

the printing quality.

The drying time of the ink, the rapid drying of the ink film on the paper surface can reduce

the amount of the binder penetrating into the pores of the paper, thereby improving the gloss and

smoothness of the ink film. The high gloss of the ink film means that the degree of specular

reflection on the surface is relatively high, so that in most cases, the human eye can see that

the white light reflected by the surface is much less than that of the ink film with low gloss,

making the color saturation more high.

The processing of printing materials improves the light resistance, heat resistance and water

resistance of the materials, increases the gloss and artistic sense, enables the ink to accurately

print colors, plays the role of protecting materials and beautifying printed matter, attracts

the eyes of buyers, and improves the value of the commodity.