Gravure printing lays down a high quantity of ink, this provides excellent density, gradation control and metallic ink appearance.
The image is etched or engraved into a copper cylinder, and then the cylinder is chromed. The gravure cylinder has a long service life and will yield a very large number of impressions without degradation of image quality.
The cylinder rotates in a bath of ink. As the cylinder rotates the excess ink is wiped off the cylinder by a flexible steel doctor blade.
The ink remains in the recessed cells (engraved area) and then directly transfers to the substrate (paper, PET, PVC, OPP or other materials) as it passes between the cylinder and the impression roller.