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    1. 2019-09-02 09:19:32
      The difference between gravure printing and relief printing

      1. Different Principles

      Relief printing: the principle of relief printing is relatively simple. In relief printing, the ink feeding device of the printer first distributes the ink evenly, and then transfers the ink to the plate through the ink roller. Because the graphic part on the relief plate is much higher than the non-graphic part on the plate, the ink on the ink roller can only transfer to the graphic part of the plate, while the non-graphic part has no ink.

      Gravure printing: Gravure printing is a direct printing method, which directly impresses the ink contained in the gravure pit onto the substrate. The depth of the printed image is determined by the size and depth of the pit, if the pit is deep,

      On the contrary, if the pit is shallow, the ink content is less, and the ink layer left on the impression is thinner.

      2. Different Characteristics

      Relief printing: ink expressive power about 90%, rich tone. The color reproduction is strong. Strong layout tolerance. There is a huge amount of printing. Paper is widely used, and materials other than paper can also be printed.

      Gravure printing: anti-counterfeiting. Gravure printing carries ink in pits carved according to the original text. The thickness of lines and the depth of ink can be controlled arbitrarily in engraving. It is not easy to be imitated and forged, especially the depth of ink pits. The possibility of realistic engraving according to the printed text is very small.

      Therefore, the current paper money, stamps, stocks and other securities are generally printed in gravure, which has a good anti-counterfeiting effect. At present, gravure printing has been consciously used in trademarks and even packaging decoration of some enterprises, which shows that gravure printing is a more viable anti-counterfeiting printing method.

      A wide range of soft materials can be used as gravure prints. For example, plastic, paper, aluminium foil and so on, especially for some materials which are easy to extend and deform, such as textile materials, have better adaptability, which is incomparable to relief printing and lithographic printing.

      Printing quality is high, intaglio printing uses a large amount of ink, graphics and texts have a convex sense, and rich levels, clear lines, high quality. Gravure printing is mostly used for printing books, magazines, pictorials, packaging and decoration.

      Mass printing, gravure printing plate-making cycle is longer, more efficient, high cost. But the plate is durable, so it is suitable for mass printing. The bigger the batch, the higher the benefit. For printing with smaller batch, the benefit is lower. So gravure printing method is not suitable for the printing of small batches of trademarks.

      3. Different applications

      Relief printing: engraving gravure printing, because of its fine lines and not easy to counterfeit, is used in the printing of marketable securities, such as banknotes, stocks, gift certificates, stamps and commercial credentials or stationery. Because of its high cost of plate making and printing, there are few users of general printing materials.

      Gravure printing: Gravure printing is mainly used for fine publications such as magazines, product catalogues, packaging printing and printing of negotiable securities such as banknotes, stamps, etc. It is also used for decorative materials and other special fields. In China, gravure printing is mainly used for soft packaging printing. With the development of gravure printing technology in China, it has also been used in paper packaging and wood. Texture decoration, leather materials, pharmaceutical packaging has been widely used.

      The principles of relief printing and gravure printing are exactly opposite. Let's talk about relief printing. The graphic part of relief printing is higher than the non-graphic part. Ink rollers are used to evenly lay the ink on the printing plate, and then print. Because the non-graphic part is depressed, it is impossible to ink. The non-pattern part of gravure printing is higher than the text part. That is to say, the text part of gravure printing is composed of N holes. The gravure printing plate rolls directly into the ink, and then a scraper scrapes the non-text ink. Because the ink of the graphic part is hidden in the hollow mesh, it will not be scraped off, so it is rolled. Press can be printed directly. The principles of both are very easy to understand.