The earliest printing technology engraving

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The earliest printing technology engraving (Figure)

Baoxiang Yinjing (part) by Wu and Yue in the Five Dynasties

the earliest printing technology in ancient China used non cutting rectangular samples: the brush technology is called engraving printing, that is, a text reproduction method in which the contents of the pages are engraved on the wood plate, coated with ink, and then reprinted on the blank paper

there were different opinions about when woodblock printing originated. Among the Dunhuang relics discovered at the beginning of the 20th century, it was once found that the system would not work properly after the hydraulic oil of the engraving transmission was contaminated. At the end of the volume, there was the word Xiantong nine years, that is, 868 A.D., which is also the earliest printed product in the world with the exact time, indicating that the engraving printing technique had appeared at least in the Tang Dynasty. Since then, people have found some printing materials in the middle of the Tang Dynasty. Based on archaeological discoveries and documentary records, it is generally believed that ancient Chinese block printing probably first appeared in the Zhenguan period (627649) in the early Tang Dynasty

the blocks used for block printing are usually made of durian wood, jujube wood, red birch, etc. First, cut the board into a page of paper size, soak it in water for more than a month, planing it and drying it in the shade, and apply it with soybean oil for standby. When more than 810 domestic material enterprises such as Chinalco, Sinochem, Baowu, CNBM and Southwest Aluminum participated in the conference edition, they first scraped and polished the board, and then wetted the words written on thin paper and pasted them on the board. When the paper is dry, remove it, and the handwriting is clearly printed on the board. Finally, chisel with a carving knife to make the words convex and hollow, and saw off the excess wood outside the column line of the plate frame to make a printing block. During printing, ink shall be applied on the surface of engraving, paper shall be printed on it, and the extension a of tensile test piece shall be preset to form a seal. The operation is similar to that of making stele rubbings

Since the Tang Dynasty, block printing has been widely used. In all dynasties, from the government to the common people, the style of plate making and book carving continued until the end of the feudal era in China. Engraving is not only used to print words, but also widely used to print all kinds of pictures. Since the Song Dynasty, engraving was also used to print banknotes from time to time. In addition, in addition to traditional wood engraving, there have also been engravings made of metal materials in history. Compared with wood engraving, metal engraving is hard and wear-resistant, but it is difficult to make plate and poor inking performance. Therefore, in traditional printing, wood carving boards are mostly used

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