Planographic printing processes are based on the different physical properties of oil and water. In planographic printing, the printing areas and the non-printing areas are practically level with each other. The plate is pre-treated chemically. It needs to be greasy, and thus repel water, in the areas that will transfer ink, while the non-printing areas attract and retain water.
The ink, which contains grease and oil, only adheres to the greasy areas. The areas containing water repel the ink. This simple method ensures that the ink only adheres to the printing areas.
In the area of planographic printing, our speciality is platemaking for offset printing and dry offset printing.
Offset printing is a form of indirect planographic printing. A rubber blanket lies between the plate and the object to be printed on, which is what makes this printing only “indirect”. The rubber blanket acts as the transfer medium and protects the substrate from damage. Also, because it is the blanket that effectively does the printing, the plate’s ink surface wears out less quickly. Offset printing is therefore a quick and economical print method.
Dry offset printing
Dry offset printing, also known as waterless printing, is a special type of planographic printing. Only ink is used in this. Ink transfer is indirect in this method, too. Ink is applied to the ink-receptive areas of the printing plate, and the non-printing areas remain ink-free. The exploitation of surface tensions leads to the production of high-quality and very precisely defined print results.