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、石印術（Lithograph）以平的表面?zhèn)饔。址Q平版法（Planographic）。大多數平版法是由印版?zhèn)饔∮∷D文到一支橡皮滾筒，再轉印到承印物上，故此種印刷方式也可以稱為轉印（Offset），俗稱柯式印刷。因為平板印刷使用的油墨相當粘，當紙張從橡皮布上剝離時，對紙張表面有很大的拉扯力而產生剝皮力（Pickingforce），故用于此種方法印刷的紙張必須清潔、無紙毛，而且表面強度要強，同時此印刷方式易破壞涂布紙的涂布層，對紙張表面的平滑度要求不高，較粗糙的紙張也能印出很好的效果。

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、凹印術（Gravure）以凹下的表面?zhèn)魉陀湍匠杏∥锷?，又叫凹版法（Intaglio）。凹版（Gravureplate）的顯著特性是：油墨是由印版凹下部分直接加于承印物上的，印版表面是平的，只有圖文部分是凹下去。此印刷方式對紙張的平滑度要求比較高。此種印刷方式在煙包印刷中使用比較普遍。

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、網印法（Screenprinting）此印刷方式主要用于藝術品的制作上

4. Screen printing is mainly used in the production of art