Is there a difference between printing effect and digital proofing?

There must be a difference between printing effect and digital proofing.

Digital proofing refers to the proofing technology based on digital publishing and printing system. In the process of publishing and printing production, the graphic information of the page is processed according to the publishing and printing production standards and specifications, and the color proofs are directly output, in other words, the printed proofs with digital manuscripts are directly output.

Compared with digital proofing, the printing effect is relatively stable, and the pictures and texts are clearer and more delicate than digital proofing. Due to the poor color stability of digital proofing, when digital proofing is used as a color sample, the printing color can't keep up with digital proofing, and the color difference of general printing color is about 10%.