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.
Imagine that we buy a monitor and its input does not match our video card, even though it has the same type.That's why certain standards apply. In polygraphy and graphics, such standards also exist - appropriate definitions of CMYK colors - key for the appropriate color reproduction.
They are ordered wholesale and also consumed in bulk.
For each order, the production costs are optimized, and the appropriate technique and type of printing is selected. Graphic designers, DTP operators and printers deal with this.They are responsible for the quality of the printout and as soon as something is wrong they are the first to be targeted by the dissatisfied boss. Their work is quite hard and I have to admit that you have to really have a fuss to do it.