Woodblock printing or block printing is a technique for printing text, s or patterns used widely throughout East Asia and originating in China in antiquity as a method of printing on textiles and later on paper. Each page or image is created by carving a wooden block to leave only some areas and lines at the original level; it is these that are inked and show in the print, in a relief printing process. Carving the blocks is skilled and laborious work, but a large number of impressions can then be printed.

As a method of printing on cloth, the earliest surviving examples from China date to before 220 AD. Woodblock printing existed in Tang China by the 7th century AD and remained the most common East Asian method of printing books and other texts, as well as images, until the 19th century. Ukiyo-e is the best-known type of Japanese woodblock art print. Most European uses of the technique for printing images on paper are covered by the art term woodcut, except for the block books produced mainly in the 15th century.

History

China According to the Book of Southern Qi, in the 480s, a man named Gong Xuanyi (龔玄宜) styled himself Gong the Sage and "said that a supernatural being had given him a 'jade seal jade block writing,' which did not require a brush: one blew on the paper and characters formed." He then used his powers to mystify a local governor. Eventually he was dealt with by the governor's successor, who presumably executed Gong. Timothy Hugh Barrett postulates that Gong's magical jade block was actually a printing device, and Gong was one of the first, if not the first printer. The semi-mythical record of him therefore describes his usage of the printing process to deliberately bewilder onlookers and create an image of mysticism around himself. However, woodblock print flower patterns applied to silk in three colours have been found dated from the Han dynasty (before AD 220).

Inscribed seals made of metal or stone, especially jade, and inscribed stone tablets probably provided inspiration for the invention of printing. Copies of classical texts on tablets were erected in a public place in Luoyang during the Han dynasty for scholars and students to copy. The Suishu jingjizhi, the bibliography of the official history of the Sui dynasty, includes several ink-squeeze rubbings, believed to have led to the early duplication of texts that inspired printing. A stone inscription cut in reverse dating from the first half of the 6th century implies that it may have been a large printing block.

The rise of printing was greatly influenced by Mahayana Buddhism. According to Mahayana beliefs, religious texts hold intrinsic value for carrying a Buddha's word and act as talismanic objects containing sacred power capable of warding off evil spirits. By copying and preserving these texts, Buddhists could accrue personal merit. As a consequence the idea of printing and its advantages in replicating texts quickly became apparent to Buddhists, who by the 7th century, were using woodblocks to create apotropaic documents. These Buddhist texts were printed specifically as ritual items and were not widely circulated or meant for public consumption. Instead they were buried in consecrated ground. The earliest extant example of this type of printed matter is a fragment of a dhāraṇī (Buddhist spell) miniature scroll written in Sanskrit unearthed in a tomb in Xi'an. It is called the Great spell of unsullied pure light (Wugou jingguang da tuoluoni jing 無垢淨光大陀羅尼經) and was printed using woodblock during the Tang dynasty, –670 AD. A similar piece, the Saddharma pundarika sutra, was also discovered and dated to 690 to 699.

This coincides with the reign of Wu Zetian, under which the Longer Sukhāvatīvyūha Sūtra, which advocates the practice of printing apotropaic and merit making texts and images, was translated by Chinese monks. The oldest extant evidence of woodblock prints created for the purpose of reading are portions of the Lotus Sutra discovered at Turpan in 1906. They have been dated to the reign of Wu Zetian using character form recognition. The oldest text containing a specific date of printing was discovered in the Mogao Caves of Dunhuang in 1907 by Aurel Stein. This copy of the Diamond Sutra is 14 feet long and contains a colophon at the inner end, which reads: "Reverently [caused to be] made for universal free distribution by Wang Jie on behalf of his two parents on the 13th of the 4th moon of the 9th year of Xiantong [i.e. 11 May AD 868 ]". It is considered the world's oldest securely dated woodblock scroll. The Diamond sutra was closely followed by the earliest extant printed almanac, the Qianfu sinian lishu (乾符四年曆書), dated to 877.

In 2009, UNESCO recognized Chinese woodblock printing as an Intangible Cultural Heritage of Humanity.

Spread

Evidence of woodblock printing appeared in Korea and Japan soon afterward. The Great Dharani Sutra () was discovered at Bulguksa, South Korea in 1966 and dated between 704 and 751 in the era of Later Silla. The document is printed on a mulberry paper scroll. The Xiantong era (咸通 Xián tōng) ran from 860–874, crossing the reigns of Yi Zong (懿宗 Yì zōng) and Xi Zong (僖宗 Xī zōng), see List of Tang Emperors. The book was thus prepared in the time of Yi Zong. A dhāraṇī sutra was printed in Japan around AD 770. One million copies of the sutra, along with other prayers, were ordered to be produced by Empress Shōtoku. As each copy was then stored in a tiny wooden pagoda, the copies are together known as the Hyakumantō Darani (百万塔陀羅尼, "1,000,000 towers/pagodas Darani").

Woodblock printing spread across Eurasia by 1000 AD and could be found in the Byzantine Empire. However printing onto cloth only became common in Europe by 1300. "In the 13th century the Chinese technique of blockprinting was transmitted to Europe", soon after paper became available in Europe.

Song dynasty From 932 to 955 the Twelve Classics and an assortment of other texts were printed. During the Song dynasty, the Directorate of education and other agencies used these block prints to disseminate their standardized versions of the Classics. Other disseminated works include the Histories, philosophical works, encyclopaedias, collections, and books on medicine and the art of war.

In 971 work began on the complete Tripiṭaka Buddhist Canon (Kaibao zangshu 開寶藏書) in Chengdu. It took 10 years to finish the 130,000 blocks needed to print the text. The finished product, the Sichuan edition of the Kaibao Canon, also known as the Kaibao Tripitaka, was printed in 983.

Prior to the introduction of printing, the size of private collections in China had already seen an increase since the invention of paper. Fan Ping (215–84) had in his collection 7,000 rolls (juan), or a few hundred titles. Two centuries later, Zhang Mian owned 10,000 juan, Shen Yue (441–513) 20,000 juan, and Xiao Tong and his cousin Xiao Mai both had collections of 30,000 juan. Emperor Yuan of Liang (508–555) was said to have had a collection of 80,000 juan. The combined total of all known private book collectors prior to the Song dynasty number around 200, with the Tang alone accounting for 60 of them.

Following the maturation of woodblock printing, official, commercial, and private publishing businesses emerged while the size and number of collections grew exponentially. The Song dynasty alone accounts for some 700 known private collections, more than triple the number of all the preceding centuries combined. Private libraries of 10–20,000 juan became commonplace while six individuals owned collections of over 30,000 juan. The earliest extant private Song library catalogue lists 1,937 titles in 24,501 juan. Zhou Mi's collection numbered 42,000 juan, Chen Zhensun's collection lists 3,096 titles in 51,180 juan, and Ye Mengde (1077–1148) as well as one other individual owned libraries of 6,000 titles in 100,000 juan. The majority of which were secular in nature. Texts contained material such as medicinal instruction or came in the form of a leishu (類書), a type of encyclopaedic reference book used to help examination candidates.

Imperial establishments such as the Three Institutes: Zhaowen Institute, History Institute, and Jixian Institute also followed suit. At the start of the dynasty the Three Institutes' holdings numbered 13,000 juan, by the year 1023 39,142 juan, by 1068 47,588 juan, and by 1127 73,877 juan. The Three Institutes were one of several imperial libraries, with eight other major palace libraries, not including imperial academies. According to Weng Tongwen, by the 11th century, central government offices were saving tenfold by substituting earlier manuscripts with printed versions. The impact of woodblock printing on Song society is illustrated in the following exchange between Emperor Zhenzong and Xing Bing in the year 1005:

In 1076, the 39 year old Su Shi remarked upon the unforeseen effect an abundance of books had on examination candidates:

Woodblock printing also changed the shape and structure of books. Scrolls were gradually replaced by concertina binding (經摺裝) from the Tang period onward. The advantage was that it was now possible to flip to a reference without unfolding the entire document. The next development known as whirlwind binding (xuanfeng zhuang 旋風裝) was to secure the first and last leaves to a single large sheet, so that the book could be opened like an accordion.

Around the year 1000, butterfly binding was developed. Woodblock prints allowed two mirror images to be easily replicated on a single sheet. Thus two pages were printed on a sheet, which was then folded inwards. The sheets were then pasted together at the fold to make a codex with alternate openings of printed and blank pairs of pages. In the 14th century the folding was reversed outwards to give continuous printed pages, each backed by a blank hidden page. Later the sewn bindings were preferred rather than pasted bindings. Only relatively small volumes (juan 卷) were bound up, and several of these would be enclosed in a cover called a tao, with wooden boards at front and back, and loops and pegs to close up the book when not in use. For example, one complete Tripitaka had over 6,400 juan in 595 tao.

Ming dynasty Despite the productive effect of woodblock printing, historian Endymion Wilkinson notes that it never supplanted handwritten manuscripts. Indeed, manuscripts remained dominant until the very end of Imperial China:

Not only did manuscripts remain competitive with imprints, they were even preferred by elite scholars and collectors. The age of printing gave the act of copying by hand a new dimension of cultural reverence. Those who considered themselves real scholars and true connoisseurs of the book did not consider imprints to be real books. Under the elitist attitudes of the time, "printed books were for those who did not truly care about books".

However, copyists and manuscripts only continued to remain competitive with printed editions by dramatically reducing their price. According to the Ming dynasty author Hu Yinglin, "if no printed edition were available on the market, the hand-copied manuscript of a book would cost ten times as much as the printed work", and also, "once a printed edition appeared, the transcribed copy could no longer be sold and would be discarded". The result is that despite the mutual co-existence of hand-copied manuscripts and printed texts, the cost of the book had declined by about 90 percent by the end of the 16th century. As a result, literacy increased. In 1488, the Korean Choe Bu observed during his trip to China that "even village children, ferrymen, and sailors" could read, although this applied mainly to the south, while northern China remained largely illiterate.

Three-five coloured prints