The surface of the printing plate can be transferred to a part of the printed ink, and the other part of the printing version of the printing ink is not transferred. Make the graphic information on the original manuscript on the printing version, and the printing version has a graphic area and a non-image area. It is also called the printing area. The non-graphic part does not adsorb inks during the printing process, so it is also called a non-printing area.
Classification of Printing Plate
According to the relative position of the graphic and non-graphic areas above the printing plate, the printing plate can be distinguished as a convex version, flat version, concave version, and hollow version. The corresponding printing method is convex printing, concave printing, flat plate printing, and hole plate printing:
1. The convex plate of the graphic part is significantly higher than the printing version of the blank part. Including live characters, light-sensitive resin versions, etc.
2. The flat plate and text part of the gap part is almost in the same plane. Including the PS plate, flat concave, multi-layer plate, metal board, etc.
3. The graphic part is lower than the blank part. Including manual mechanical carving concave, camera concave, electronic carving concave, etc.
4. The graphic part of the hole plate is the print version of the hole. The commonly used hole versions include the hollow version, the silk network version, etc.
According to the prints used in the print version, there are wooden, stone plates, zinc plates, aluminum plates, copper plates, nickel plates, steel plates, glass plates, magnesium plates, electroplating multi-layer plates, paper plates, nylon plates, plastic plates, rubber plates, etc.
The alloy plates have a paper-shaped lead version of lead, and tin alloy solution, or typeset as a living word. The multi-layer metal plates of the bimetal plate and chromium copper-layered steel bottom (or even stainless steel) triple-layer metal plates.