Gravure printing is abbreviated as gravure printing, which is one of the four printing methods. Gravure printing is a direct printing method. It directly imprints the ink contained in the pits of the gravure onto the substrate. The density of the printed image is determined by the size and depth of the pits. If the pits are deeper , It contains more ink, and the ink layer left on the substrate after stamping is thicker; on the contrary, if the pits are shallow, the amount of ink contained is less, and the ink layer left on the substrate after stamping Is thinner. The gravure printing plate is made up of pits corresponding to the original graphic and the surface of the printing plate. During printing, the ink is filled into the pit, the ink on the surface of the printing plate is scraped off with a squeegee, there is a certain pressure contact between the printing plate and the substrate, and the ink in the pit is transferred to the substrate to complete the printing.
As a kind of printing process, gravure printing has the advantages of thick ink layer, bright colors, high saturation, high printing durability, stable printing quality, fast printing speed and other advantages in the field of printing, packaging and graphic publishing. Occupy an extremely important position. From the perspective of application, in foreign countries, gravure printing is mainly used for fine publications such as magazines and product catalogs, packaging printing and printing of securities such as banknotes and stamps, but also in special fields such as decorative materials; in China, gravure printing Printing is mainly used for flexible packaging printing. With the development of domestic gravure printing technology, it has also been widely used in paper packaging, wood grain decoration, leather materials, and pharmaceutical packaging. Of course, gravure printing also has limitations, and its main disadvantages are: complex pre-press platemaking technology, long cycle time, and high platemaking cost; due to the use of volatile solvents, the harmful gas content in the workshop is high, which causes greater damage to workers ’health; gravure printing The treatment required by practitioners is relatively high.
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