Technical articles: What is the principle of gravure printing machine? What is the working principle of gravure printing machine?

After the four-color printing machine entered the clothing, food and shelter of everyone, it created a great convenience for everyone's clothing, food and shelter. It is also aimed at the staff of the company's office in the international business work, but also improved the work efficiency. The general four-color printing press, only the operation of each device, although it has been improved once and for all, but still can not consider a lot of work. There is a type of copying machine called a gravure copier, which is a copier that can be composed, which looks very efficient. Can consider a lot of copying work.

When the gravure printing machine is packaged and printed, the whole plate of the plate cylinder is inked, and the printing ink of a part of the blank page on the plate is scraped off by the squeegee, and the printing ink of a part of the drawing is left, and then the paper is passed, and the printing roller is pressed by the printing drum. The reverse printing of the paper causes the concave portion of the printing ink to immediately migrate to the paper, and finally the promotional material is piled up or rewinded by a part of the delivery paper.

Gravure printing crafts have the advantages of strong ink layer, rich and colorful layers, strong layering, high cost performance in packaging and printing, and are suitable for packaging and printing of beautiful color pictures, trademark logos, decoration products, commercial papers and colorful newspapers. Because the plate making process of the gravure printing machine is complicated, the period is long, and the environmental pollution of the benzene-containing printing ink to the natural environment has not been widely used in China. Therefore, measures such as improving the plate making process, reducing the plate making time, applying environmentally friendly printing inks, reducing energy consumption, and controlling costs have been scientifically improved.

A key feature of gravure presses is that the text on the plate is partially recessed and the blank pages are partially raised, as opposed to the layout of the letterpress press. When the device is printing a solid color, the plate is first immersed in the printing ink tank and turned over, and all the surface layers of the printing plate are coated with the printing ink layer. Subsequently, the printing ink layer belonging to a part of the blank sheet is scraped off, and a part of the protrusion generates a blank page, and a part of the concave portion is covered with the printing ink, and the area where the recessed ink is thicker is thicker. The device migrates a portion of the printed ink to the printed matter according to the work pressure effect, thereby obtaining a promotional material.

When printing multi-color, the overprinting method or the simple partial ink-coating method is adopted, so that the printing inks of various colors are required to be spread over the relevant part of the surface of the printing plate, and the basic principle of printing multi-color basic packaging printing is the same as the printing solid color. . There are two key types of printing plates commonly used in gravure printing presses. This is a photo intaglio, that is, a photocopying version; the other is a hand-engraved version. The engraving version of hand-carved engraving includes computer engraving, manual engraving of mechanical equipment and hand-engraving of electronic components.

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