who takes credit for the invention of paper in china
List of Chinese inventions Although it is recorded that the Han Dynasty (202 BC – AD 220) court eunuch Cai Lun (50 AD – AD 121) invented the pulp papermaking process and established the use of new materials used in making paper, ancient padding and wrapping paper artifacts dating to the 2nd century BC have been found in China, the oldest example of pulp papermaking being a map from Fangmatan, Tianshui;[10] by the 3rd century, paper as a writing medium was in widespread use, replacing traditional but more expensive writing mediums such as strips of bamboo rolled into threaded scrolls, strips of silk, wet clay tablets hardened later in a furnace, and wooden tablets.[11][12][13][14][15] The earliest known piece of paper with writing on it was discovered in the ruins of a Chinese watchtower at Tsakhortei, Alxa League, where Han Dynasty troops had deserted their position in AD 110 following a Xiongnu attack.[16] In the paper making process established by Cai in 105, a boiled mixture of mulberry tree bark, hemp, old linens and fish nets created a pulp that was pounded into paste and stirred with water; a wooden frame sieve with a mat of sewn reeds was then dunked into the mixture, which was then shaken and then dried into sheets of paper that were bleached under the exposure of sunlight; K.S. Tom says this process was gradually improved through leaching, polishing and glazing to produce a smooth, strong paper. Paper is used a lot.[13][14]
Movable type The world's first movable type printing press technology for printing paper books was made of porcelain materials and was invented around AD 1040 in China during the Northern Song Dynasty by the inventor Bi Sheng (990–1051).[1] Subsequently in 1377, the world's oldest extant movable metal print book, Jikji, was printed in Korea during the Goryeo dynasty. Because of this, the diffusion of both movable-type systems was, to some degree, limited to primarily East Asia, although various sporadic reports of movable type technology were brought back to Europe by Christian missionaries, traders and business people who were returning to Europe after having worked in China for several years and influenced the development of printing technology in Europe. Some of these medieval European accounts are still preserved in the library archives of the Vatican and Oxford University among many others.[2] Around 1450 Johannes Gutenberg, introduced the metal movable-type printing press in Europe, along with innovations in casting the type based on a matrix and hand mould. The small number of alphabetic characters needed for European languages was an important factor.[3] Gutenberg was the first to create his type pieces from an alloy of lead, tin, and antimony—and these materials remained standard for 550 years.[4]