uu27itu: 3d nature wallpaper

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The development of printing was preceded by the use of cylinder seals in Mesopotamia developed in 3500 BC, and other related stamp seals. The earliest form of printing was woodblock printing, with existing examples from China dating to before 220 AD and Egypt to the 4th century. Later developments in printing include the movable type, first developed by Bi Sheng in China, and the printing press, a more efficient printing process developed by Johannes Gutenberg in the 15th century.

Woodblock printing is a technique for printing text, images or patterns that was used widely throughout East Asia. It originated in China in antiquity as a method of printing on textiles and later on paper. As a method of printing on cloth, the earliest surviving examples from China date to before 220 AD, and from Roman Egypt to the 4th century.

Printing spread early to Korea and Japan who also used Chinese logograms but the techniques were also used in Turpan and Vietnam using a number of other scripts. However, unlike the diffusion of paper, printing techniques never spread to the Islamic world.

Around the mid-century, block-books, woodcut books with both text and images, usually carved in the same block, emerged as a cheaper alternative to manuscripts and books printed with movable type. These were all short heavily illustrated works, the bestsellers of the day, repeated in many different block-book versions: the Ars moriendi and the Biblia pauperum were the most common. There is still some controversy among scholars as to whether their introduction preceded or, the majority view, followed the introduction of movable type, with the range of estimated dates being between about 1440 and 1460.