The reason for choosing color for use in color dot printing

In color dot printing, the characteristics of spot inks are often used to select and use them. In general, it is generally used in two situations:

1. In order to print on the printed matter, the color of visible light outside the color gamut of some CMYK four-color printing inks can be printed. The color gamut of CMYK four-color printing ink is obviously insufficient compared with the visible color gamut, while the color gamut of spot color ink is wider than that of CMYK four-color printing ink, so it can express many colors other than CMYK four-color ink;

2. To make up for the lack of printing technology. Due to the errors of various processes in the overall printing process, equipment maintenance, operating environment, artificial omissions, and mechanical wear and tear, it is difficult to obtain even and smooth dot colors when printed at 153 or less dots. At this time, we can use the same color. The full version of the color (ie spot color in the field) instead of a small dot for printing, it can be easier to get a flat large area color. In addition, sometimes in order to be able to clearly show the fine picture, such as the fine strokes of mixed color graphics or anti-white lines, etc., also often use spot color processing in order to fine lines can be expressed enough to be real and delicate.