The four most common printing methods currently used in the printing industry
1. Relief printing
The principle of letterpress printing is relatively simple, with ink expressive power of about 90% and rich color tones; Strong color reproduction and layout tolerance, with a large printing quantity. Its application range is wide, and materials other than paper can also be printed.
In letterpress printing, the ink feeding device of the printing machine first distributes the ink evenly, and then transfers the ink to the printing plate through the ink roller. It is generally used in large quantities of printed materials, such as color magazines and popular building material printing.
2. Gravure printing
As a type of printing process, it occupies an extremely important position in the fields of printing packaging and graphic publishing due to its advantages such as thick ink layer, bright colors, high saturation, high plate resistance, stable printing quality, and fast printing speed.
It is commonly used for high quality and large quantity printing products such as cigarette labels, wine labels, instant noodle bags, sugar paper, etc.
3. Offset printing
Offset printing, also known as "offset printing", uses a drum type resin printing mold to transfer the ink adhered to the adhesive surface onto the paper surface. This process is widely used and has stable quality and process.
However, due to the flat surface of the adhesive, there are no concave patterns, so the patterns and patterns printed on the paper surface are also flat, without a three-dimensional sense, and have poor anti-counterfeiting performance. Therefore, it is generally used for newspapers, books, packaging, PVC, and self-adhesive.
4. Screen printing
Screen printing refers to the use of silk screen as the substrate and the use of photosensitive plate making methods to create a screen printing plate with graphics and text. The basic principle of using a screen printing plate is that the mesh of the image and text parts can pass through ink, while the mesh of the non image and text parts cannot pass through ink for printing. The advantage is that it is not limited by the size and shape of the substrate, and is suitable for various types of inks, such as electronic products, textiles, and posters. Business cards, etc.