Printing machinery

2022-03-12 17:09

Modern printing press is generally composed of plate loading, inking, embossing, paper feeding and other institutions. When it works, it first makes the text and image to be printed into a printing plate and installs it on the printing machine, then applies the ink on the place where the text and image are on the printing plate manually or by the printing machine, and then directly or indirectly transfers it to paper or other substrate, so as to copy the same printed matter as the printing plate.

Printing was first invented in China. Printed books have appeared in China since the ninth century. Then the printing invented in China spread to all countries in the world. The invention and development of printing press plays an important role in the dissemination of human civilization and culture.

In 1439, Gutenberg, Germany, manufactured a wooden relief printing press. Although this vertical spiral hand trigger printing press has a simple structure, it has been used for 300 years; In 1812, konich of Germany made the first round flattening relief printing press; In 1847, Roy of the United States invented the rotary printing press; In 1900, it was made into a six color rotary printing press; In 1904, Rubel of the United States invented the offset printing press.

Before the 1950s, the traditional relief printing technology occupied a dominant position in the printing industry, and the development of printing press was also dominated by relief printing press. However, the lead alloy letterpress printing process has the disadvantages of high labor intensity, long production cycle and environmental pollution. Since the 1960s, lithographic offset printing technology with the characteristics of short cycle and high productivity began to rise and develop, and lead alloy relief printing was gradually replaced by lithographic offset printing. Soft relief printing, hole printing, electrostatic printing and inkjet printing have also been developed in packaging printing and advertising printing.

Printing presses are divided into relief, lithography, intaglio and hole printing presses according to the form of printing plate; The mounting plate and embossing structure are divided into flat press, circular press and circular press.

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FOSHAN QUANTONG IMP & EXPORT CO., LTD.
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