There are three traditional printing methods:
1. Letterpress printing: the graphic and text content on the printing plate is raised. The seal we use is letterpress printing, with raised text. It first comes into contact with the ink in the ink tank, and then the printing plate comes into contact with the paper, and the text is transferred to the paper.
2. Gravure printing: Contrary to letterpress printing, the text content is concave. When printing, the printing plate is first inked in the ink tank, and then a scraper scrapes off the surface of the printing plate. Then only the concave part of the ink (text) is still on the printing plate, and then the printing plate comes into contact with the paper, so that the ink is transferred to the paper
3. Hole printing: this It’s easy to understand. Just like the spray paint (car license plate) we see in our factory, use a template to hollow out the text content, then cover it on the paper, spray ink on the entire surface, and then take away the template, then the empty part of the template is This is the way to understand the part where the ink falls on the paper. Of course, in actual operation, the screen is a whole piece, and the holes are silk mesh of the same size. Then special solvent is used to seal the parts of the mesh that need to be sealed. , the remaining part is not sealed, then the unsealed holes in the silk can leak ink