Classification of the use of printed matter
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According to the use of printed matter, it is generally divided into book printing, newspaper printing, advertising printing, banknote printing, map printing, packaging and printing, and special printing.
Book printing is one of the largest printing and production values. Before the 1970s, the letterpress printing was mainly used in typesetting. After the 1970s, the letterpress resin version was gradually used. Since the 1990s, computer typesetting technology has been continuously improved, especially in China's Chinese character information processing technology, and there have been more and more books using computer typesetting and printing.
Newspaper printing is second only to printing after the publication of books and periodicals. Newspapers are an important medium for disseminating news, and they are time-based. Before the 1970s, the use of letterpress printing of lead-lead was labor-intensive and environmentally polluted. After the 1980s, lithography was mostly used. Due to environmental protection issues and the increase in the number of newspapers issued, flexographic printing has gradually increased.
Advertising printing is a means of promoting goods and making profits in the market economy. The printing range is wide, with sample products, posters, pictorials, color pictures, posters, billboards, etc. It requires short printing time and good printing quality, generally using lithography. In recent years, large-format billboards have mostly used stencil printing.
The finished products printed on the banknotes are mainly banknotes, tickets, stocks, bonds and other securities. The printing of such prints requires strict anti-counterfeiting technology, mainly gravure printing, lithographic, letterpress or other printing methods.
The finished products printed on the auxiliary map include topographic maps, geology maps, aerial survey maps, traffic maps, and military maps. The drawings are complex, the size of the screen is different, and the precision requirements are high. Most of them adopt photographic color separation and lithographic printing with multiple plates, and the method of processing images by electronic screen separation and color desktop publishing system is used in map printing. It is gradually entering production and practical use.
The finished products printed and packaged are mainly used for packaging and decoration of goods. They not only have the functions of loading goods, protecting goods, beautifying goods, but also playing the role of promoting goods and selling goods. There are many kinds of printed products, and there are carton boxes. , plastic bags, metal boxes, trademarks, hoses, packaging paper, glass, ceramics, leather, etc. Printing methods include: letterpress printing, lithography, gravure printing, stencil printing, and special printing.
Row printing is a printing that is different from general plate making, printing, post-press processing, and printing materials for special purposes. Such as: electrostatic flocking, holographic printing, inkjet printing, form printing, magnetic printing. Many packaging prints are made with special printing. With the development of new materials and high technology, special printed products will be more colorful.