History of screen printing
The earliest screen printing originated in China, from now more than 2,000 years of history. As early as the Qin and Han dynasties in China appeared Jie Jie printing method. Changsha Mawangdui excavated the picture is the Western Han Dynasty screen printing products, in the Eastern Han Dynasty Jie Jie Batian products became popular. To the Sui Dynasty DaYe (605 - 611 years) years began to stretch the tulle to a box made of perforated plate printing process, so that this printing method has made a leap in technology and developed into an early screen printing . The court dresses of the Tang Dynasty were also decorated in beautifully printed patterns in this way. This method was later spread to Japan, Japan in the days of Najuk used this method of printing and dyeing clothes. This stencil printing method was the most advanced in the world at the time.
In Song Dynasty, screen printing has developed again. Start with the screen printing dye added starch powder, tune into pulp for printing. The use of slurry printing to improve the original use of oily coatings, printed with this slurry is more colorful and colorful prints. Many foreign scholars studying screen printing have to admit that screen printing is one of China's inventions. Chinese screen printing was introduced in a screen printing magazine in the United States as follows: "There is evidence that the Chinese used horse bristles and stencils before 2000. The apparel of the early Ming proved their competitive edge and processing skills. There was a market and technical knowledge at that time, because they switched to silk and increased the level of printing. "Unfortunately, the long-term Chinese feudal society has shattered productivity and limited the development of screen printing technology. Especially in modern screen printing, which uses the photo-sensitive screen as a sign, China lags behind.
In Europe, by the eighteenth century, stencil-blanking plates had been used extensively for wall paper production. In 1905, Samuel L. Heevan of the United Kingdom developed and patented a printing method using silk mesh. After this method was passed to the United States, a man named Joan Bruce Swarovski improved it and developed a method of multicolor printing with a single screen for printing signboards. Since then, screen printing technology is developing rapidly. Screen printing is also heavily used in commercial printing.
In Japan, there is an artist named Wan Shih, who is the founder of Japan's modern screen printing. At the age of 16, he went to the United States to study in the United States. After returning to Japan in 1918, he introduced the new screen printing technology from the United States to Japan and later studied Post "polymerization plate method" and obtained a patent. He founded a joint venture color printing technology company at Shiyuan Bridge in Tokyo in 1923, and Shuson Longshan, an industrialist, bought this patent and invested 400,000 yen. Wan Shih is responsible for the agency's technical guidance, and strive to improve the use of Japanese-style printing and die technology, completed another varnish carving plate. This method was later imported into the United States.
Photoengraving screen printing was officially completed in 1925. It is exactly the same as direct photolithography. However, since this patent was already patented in 1918 as a printing and dyeing method, the method was not patented. Photoengraving screen printing, like other photolithography methods, takes advantage of the invention and application of the French LJM Tacarlo in 1837. After that, W.H.F.Tarloop of Britain proposed ways of further reform. The results of these studies have changed the scope of application of screen printing. From 1914 to 1915, C · M · Peter and A · Imeri in the United States and others successively invented the basic emulsion of gelatin, polyvinyl alcohol, polyvinyl acetate, kraft gum, gum arabic and other basic emulsions by adding potassium dichromate and heavy Ammonium chromate and other light-sensitive material emulsion (photosensitive plastic).
World War II greatly promoted the development of screen printing. Europe and the United States, especially in the United States, the initial emulsion used in screen printing is about 1914-1915. Of course, then the emulsion is still very simple, original and unstable state. Since 1940, due to the development of industry, a major research topic of printed circuit boards has been put forward. In order to achieve this goal, research on photolithography has been rapidly developed. Military industry became so important after the start of World War II that the industry increased dramatically, especially in the radio remote control and rocket research sector which is breeding this new photolithography technology. In order to install a stable and strong circuit board in a small space and the invention of the circuit board printing method, its heart to use high precision screen printing method. After the Second World War, the research and application of new screen printing technologies were strengthened in rockets, satellite satellites, weak-current industries and many other non-civil industrial sectors. By 1950, screen printing in the civilian industry has been widely used, but it is only the initial screen printing technology development.
Modern silk-screen printing has been developed for up to 40 years, and only in the last 30 years has it reached a technologically decisively mature period. During this period, even though there were some shortcomings in the rationalization of production, the productivity of screen printing had been significantly improved. For screen printing, rational production of different stages of simultaneous coexistence without change. Therefore, it is argued that the conclusion that is technologically and economically significant only if fully automated screen printing is produced is one-sided. In fact, in today's screen printing technology and equipment varieties not only the application and the need for fully automatic screen printing machine. In contrast, a large number of semi-automatic and 3/4 automated presses are now being used in screen-printing production facilities, and in the various printing tasks undertaken by screen printing these devices exhibit characteristics that are compatible with the production conditions . Therefore, the actual production, we can see that not only the use of semi-automatic and 1/4 automatic screen printing machine, but also with manual screen printing machine, the number of fully automatic screen printing machine as much. But at the same time, we should not overlook the fact that today's modern screen printing factory is always faced with the necessity of ensuring productivity and competition. Therefore, it is necessary to increase appropriate automated production equipment.
Many years ago, screen printing was once considered impossible to produce a print with a fine print but now it has the potential to go hand-in-hand with flexographic printing. In terms of printing capabilities, the new rotary screen presses have shown the potential to compete with small offset presses in terms of speed and quality. This simple and lightweight compact screen printer has the advantage of being cheaper than a small offset printer. Printing speed from 30 to 240 sheets per minute. Easy to change the version on the machine, within half the species can be done manually change color. Color change and pad printing on a small offset press take at least 25 minutes to complete. Screen printing screen replication resolution has been able to reach 150 lines (60 lines / cm). Screen printing does not exist offset printing ink balance, replace the blanket, ink emulsion and adjust the ink key and the like technical issues, so its operation is relatively simple. At present, there are two basic problems of screen printing have not been resolved, namely, the drying of screen printing products and improve the quality of screen printing plate. The common trend in the development of screen printing is the application of electronic computing technology to facilitate further automation of the process. Manufacture and use of new media, this new media will simplify the plate making process, improve the printing plate to the resolution. Manufacturing high production efficiency, and can ensure that both sides overprint precision screen printing machine, shorten the drying time of printed matter and expand the past large screen size characteristics.