It is true that it has many varieties and uses different techniques and materials (paint, paper).
The main division is cold printing, where the paint is fixed by soaking into paper.While the 'hot' offset where the printed paper web passes through the drying tunnel. The classic offset (water) is associated with the use of water rollers and hydrophilic and hydrophobic surfaces, however, this method is already abandoned due to the difficulty in obtaining a good balance of water and oil paint. The successor of this method is anhydrous offset printing where silicone molds are used instead of water.
Without it, printing would not be possible.
Paper as a material has been known since 105, n.E., That is for a very long time. However, it was not until the twentieth century that more and more types of paper for various applications were invented. And now we have paper chalked, white, slippery, coated with plastics, etc. All this to achieve different results of advertising and journalistic printing. The end result of the printed item depends on the choice of paper, its durability and durability. .