The development history of printing

In the history of printing, block printing was invented in the Tang Dynasty and was widely used in the middle and late Tang Dynasty. The invention of movable type printing by Bi Sheng in Song Dynasty marked the birth of movable type printing.

Printing is the forerunner of modern human civilization, which creates conditions for the wide spread and exchange of knowledge. Printing first spread to Korea, Japan, Central Asia, West Asia and Europe.

Printing in China has a long history and is widely spread. It is an important part of China culture, which germinated with the birth of China culture and evolved with the development of China culture. In terms of origin, it has experienced four historical periods: origin, ancient times, modern times and contemporary times, with a development course of more than 5,000 years.

Printing type

Letterpress printing has the longest history and is the most popular. The protruding parts of layout images and characters accept ink, while the recessed parts do not accept ink. When the printing plate is pressed against the paper, the ink will be printed on the paper. Printing materials mainly include movable type, lead plate, zinc plate, copper plate and photosensitive resin plate. Some books, bills, envelopes and business cards are still embossed.

Lithography is the most common and widely used printing method today. Image and non-image are on the same plane. Based on the principle that water and ink repel each other, the graphic part accepts ink but not water, and the non-graphic part is the opposite. In the printing process, indirect method is adopted. First, the image is printed on the rubber drum, and the image and text are changed from positive to negative, and then the image and text on the rubber drum are transferred to paper. This printing method can be used for picture books, picture advertising samples, calendars, etc.

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