The illustration shows the process of a method used to print newspapers called lithography. It used several rolls and plates to print pictures and texts on paper.
This process has 6 stages. First, they put a plate and calibrated it on a big roller and it rounded to upper smaller rollers. in stages 2 and 3, there are several small rollers submitted by pictures and texts which there are wet and powered by inks. Next, the roller plate goes through a big plate which is submitted by big paper. when they roll over a roller with paper together, they press to each other and are printed on paper with heat. in stage 5 we can see printed paper get out of pressure but they are still wet and hot. finally in the last stage, they are cooled by air.
In conclusion, the simple process illustrates how pictures are printed on papers with hot inked plates and go through rollers to put in on paper with pressure and heat and get out to make them cool.