Offset is a printing method used to reproduce texts and images. The offset relies on photographing the subject (phototransfer) on the surface of metallic printing plates in such a way that it allows the different chemical behavior of the different areas of their surface. Modern printing plates are made of aluminum but in the past there have been plates of zinc. This is why many times the printing plates of the method are also called tsiks. The mound has also been described as Lithography for historical reasons: the first printing plates were made of special stone (porous marble). The method is used to print monochrome and colorful forms and dominates the publishing and printing industry. The most common forms printed with this method are books, newspapers, magazines, promotional posters and other forms.
The above method is repeated 4 times for CMYK primary colors (Cyan, Magenta, Yellow, black).