Offset printing is a widely used printing technique that is a printing method that first transfers an image of the ink onto a blanket and then transfers it to the surface of the printed material. Offset printing is a kind of lithography, and it is based on the principle of ink repelling. The offset printing technology can prevent the water on the printing surface from being transferred to the surface of the printing material together with the ink. The advantages of offset printing are as follows: High image quality – sharper and sharper than letterpress printing, because the blanket is in good contact with the texture of the surface of the printed material. In addition to smooth paper, a wide range of printed materials such as wood, fabric, metal, leather, rougher paper, etc. can be used. The printing plate is made quickly and easily. The printing durability of the printing plate is higher than that of direct lithography because there is no direct contact between the printing plate and the printing surface.
