What are the four colors and spot colors of uv printers?

   What is four-color printing? The four-color printing process generally refers to

the printing process that uses yellow, magenta and cyan primary ink and black ink

to print various colors of color pattern originals.

   What is spot color printing? Spot color printing refers to the use of yellow,

magenta and cyan. The printing process of printing the original color of the design

with other color inks other than black ink four-color inks, such as green, gray, etc.

   What products are suitable for four-color printing process? Photos that reflect

the rich and colorful color changes in nature, painter's color art works or other

pictures containing many different colors taken by color photography will be printed

by four-color printing process for technological requirements or economic benefits.

requirement for color, and the color matched by four tones can not meet the effect

requirements, so it needs to be equipped with spot color, which is more to improve

the quality of printing. What is the difference between the color visual effect of

the spot color printing color block and the color block printed by four colors?

The ink prepared by spot color printing is obtained according to the mixing principle of

color subtractive method. Its color brightness is low and its saturation is high.

The sensitivity of the change of the thickness of the ink layer to the color change will

be reduced, so it is easier to obtain a uniform and thick printing effect. For the color

block prepared by the four-color printing process, since the various colors that make up

the color block are mostly composed of a certain proportion, the change of any color will

lead to the change of the color of the color block, resulting in the chance of uneven ink

color will be multiplied, and it is not easy to achieve the effect of uniform ink color.

The color block has higher brightness and lower saturation.