A printing knife holder system based on gravure printing and its working method

Abstract

The invention discloses a printing knife rest system based on intaglio printing. The printing knife rest system comprise a knife rest, an ink scraping blade, a support, a slide rail, air taps, an air pump, an air tube and an adjusting valve. Printing ink is contained in an ink fountain, the bottom of an intaglio printing roller is immersed into the printing ink, and an impression roller conveys printing paper to the connecting position of the impression roller and the intaglio printing roller. The knife rest is arranged on the left side of the intaglio printing roller, and the ink scraping blade is arranged at the front end of the knife rest. The slide rail is arranged on the knife rest and is fixed through the support, and the air tube penetrates through the knife rest to be connected with the slide rail. The air taps are arranged on the upper portion of the air tube, and the lower portion of the air tube is connected with the air pump. The adjusting valve is arranged at the connecting position of the air tube and the air pump. According to the printing knife rest system, the printing ink in the non-image-text position of a forme is quickly blow-dried through exhausted air flow, and unnecessary stains are prevented from being formed on the printing paper, so that the purpose of improving the surface printing effect is achieved. The invention further discloses a working method of the printing knife rest system based on intaglio printing.

Description

technical field [0001] The invention relates to the technical field of gravure printing suitability improvement, in particular to a gravure printing-based printing tool holder system and a working method thereof. Background technique [0002] Gravure printing is one of the four major printing methods. It is a direct printing method. The ink contained in the gravure pits is directly imprinted on the printing paper. The shades of the printed picture are determined by the size of the pits and It depends on the depth. If the pit is deep, it will contain more ink, and the ink layer left on the printing paper after embossing will be thicker; The ink layer left on the final printing paper is relatively thin; the printing plate of gravure printing is composed of pits corresponding to the original graphics and the surface of the printing plate. When printing, the ink is filled into the pits. The ink on the surface of the printing plate is scraped off with a scraper, and there is a c...

AI Technical Summary

Problems solved by technology

[0002] Gravure printing is one of the four major printing methods. It is a direct printing method. The ink contained in the gravure pits is directly imprinted on the printing paper. The shades of the printed picture are determined by the size of the pits and It depends on the depth. If the pit is deep, it will contain more ink, and the ink layer left on the printing paper after embossing will be thicker; The ink layer left on the final printing paper is relatively thin; the printing plate of gravure printing is composed of pits corresponding to the original graphics and the surface of the printing plate. When printing, the ink is filled into the pits. The ink on the surface of the printing plate is scraped off with a scraper, and there is a certain pressure contact between the printing plate and the printing paper, so that the ink in the pit is transferred to the printing paper to complete the printing; gravure printing is a printing process. Its printing products have the advantages of thick ink layer, bright colors, high saturation, high printing plate durability, stable printing quality, and fast printing speed, which occupy an extremely important position in the field of printing, packaging and graphic publishing; but gravure printing is also There are also certain shortcomings. For example, in the existing gravure printing process, the gravure plate sometimes has uneven surface polishing or sharp objects will bruise the chrome-plated surface to form a small notch during the plate-making process, resulting in gravure. The non-graphic part of the printing plate is also inked, and small stains are formed on the printing paper, which affects the transfer of graphics and text

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