1. Letterpress uses a convex surface for transfer printing, also known as relief. A large number of letterpress uses rotary printing machines, including newspapers, magazines and advertising flyers. This kind of printing has higher requirements on the smoothness, inking and strength of the paper, and does not allow the paper to break Wrinkling or other problems leading to the shutdown of the printing machine occur. At the same time, the paper is not allowed to lose hair, powder, blister, soluble substances and friction substances.
2. Lithography, also known as planographic, uses a flat surface for printing. Most lithography is from the printing plate to a rubber cylinder, and then transferred to the substrate, so this kind of printing method can also be called offset, commonly known as offset printing. Because the ink used in plate printing is rather sticky, when the paper is peeled off from the blanket, there is a great pulling force on the surface of the paper, resulting in peeling force. Therefore, the paper used in this method must be clean, free of paper wool, and the surface strength is strong. At the same time, this printing method is easy to damage the coating layer of the coated paper, and the smoothness of the paper surface is not high, Rougher paper can also produce good results.
3. Gravure (gravure) to concave surface transfer ink to the substrate, also known as intaglio (intaglio). Gravure plate (gravure plate) is a remarkable feature: ink is directly added to the substrate by the concave part of the plate, the surface of the plate is flat, only the graphic part is concave. This printing method requires high smoothness of paper. This kind of printing method is widely used in cigarette package printing.
4. Screen printing is mainly used in the production of art濟南印刷廠講解的內容 更多的內容 請咨詢公司官網http://www.703248.com/