Printing is a technique that transfers ink to the surface of paper, fabrics, leather, and other materials and replicates the contents of the original manuscript in bulk. Printing has a variety of forms: traditional offset printing, screen printing, digital printing and so on. Portable printing and relief printing, Gravure printing, and lithography are also known as the four modern printing techniques. The printing factory is a comprehensive institution that is designed to sample, plate making, printing, binding, packaging, and transportation. Of course, the most important thing is that the printing factory must have printing equipment before it can be called a printing factory. The printing press is the most important. The printing press has a monochrome, two-color, four-color, and eight-color, and it has 8 boot, 4 boot according to specifications., semi-boot and full-boot. Some simple printing can also be printed using screen printing. Only a screen can be used to complete printing, but the effect is no better than that of large printing.
The types of printing business are different and the uses are also different. Such as book printing, news printing, advertising printing and so on.
The printing of books and magazines used to be letterpress printing.
Press printing: In the past, we used to print with a relief wheel, because of its rapid and large printing volume. In order to meet the needs of color, use lithography or photo-concave rotary printing.
Advertising printing: Including color pictures, pictorials, posters, etc., most of them are printed in lithography, and sometimes they are printed in Letterpress, Gravure, or hole.
Stationery printing: such as envelopes, letter papers, invitations, business cards, account books, job books, etc., must be cheap and printed in large quantities, so the quality is inferior, so letterpress printing is preferred.