Offset printing press

The composition principle offset printing press, and gravure printing machine, screen printing principle. Here is the basic principle of its introduction.

The surface of lithographic printing plate blank part of the graphic part and almost in the same plane. It uses water, oil, the principle of repulsion, so that graphic part of the oil-water resistant, oil resistant blank portion without dipping the hydrophilic ink, inked under pressure to part of the ink transfer to the printing surface, thus completing the printing process.

After using the indirect printing method, offset printing press developed rapidly, more varieties, such as office mini offset printing machinery, large-scale, multi-color, high-speed rotary offset printing books and magazines, for a flat piece of paper or web , the single-sided printing or double-sided printing of lithographic printing presses. One color offset press and web offset press representative. Offset printing press has been widely used computer control devices, increasingly sophisticated technology. Plate-making equipment is also developed to the use of electronic color scanner, and extensive use of pre-coated plate.

The principle of offset printing press is probably those described above. For reference only.