These tests were paper with a substrate where it was burned by means of a laser they were the first step in making a positive or a negative positives were used for screen printing and similar prints negatives for offset a color selection. In this case it is the logo of a brewery for example it was divided into layers for cyan magenta yellow black some Pantone colors and a white ink that brings the colors to life. Nowadays they are no longer necessary this separation already exists in the design programs with the channels in Photoshop.
What is a final art 5 Pantone in fine proof Basic tools There are also tools that over the years have been maintained to help in the quality of the materials such as the thread counter and the Pantone guide the first is the tool photo background removing with the greatest support in the color test since they help with the responsibility in a test at the machine to check in detail that if you ask for a color selection CMYK these fall perfectly in their angles that if you requested a paste it is a paste and not rosettes .
On the other hand the Pantone guide is basic for the sample of colors in a solid state and in CMYK which will always have a difference the solids are created based on 16 pigments and are flat the color selection CMYK is based in cyan magenta yellow and black with their respective percentages so that the printer can make the correct color combination. one for glossy papers and materials the uncoated for more absorbent and matte materials .