engleski

Influence of the surface characteristics on quality of the offset printing plate

The surface characteristics of the offset printing forms, beside the physical and chemical properties, is a defining factor concerning the functioning of the conventional and CtP printing forms. The quantity of the adsorbed fountain solution as the most important factor in the printing process is directly influenced by the surface characteristics of the non printing areas on the printing form. The micro grained and porous surface adsorbs a much higher quantity of fountain solution then the flat and smooth surfaces. The research in this papers includes the measuring the factors of roughness, 3D projection and area analysis on four samples of offset plates made by different manufacturer. The results obtained show the differences, and enables to compare and define the influence of different roughness parameters on the printing forms in the printing process, and thus the final print quality on different substrates.

surface characteristics; printing forms; roughness; 3D

nije evidentirano