The invention relates to a printing unit for printing substrate by a rotogravure printing process, with a forme cylinder which comprises an imaging pattern of depressions on its circumference, and with an inking unit for coloring the pattern of depressions provided on the forme cylinder, comprising a first inking unit cylinder which is in the area its outer surface comprises depressions corresponding to depressions on the forme cylinder and can be colored by an inking device, the inking device comprising an ink supply space which is at least partially limited by its outer surface on the side facing the inking unit cylinder comprising the depressions, and with at least the one in the operating direction of rotation of the inking unit cylinder comprising the depressions, a retaining means is provided on the downstream side of the ink supply space, through which, viewed in the operating direction of rotation, behind the ink supply space and in front of the nip point with a second color printing cylinder previously applied to the outer surface of the first inking cylinder printing ink can be removed. The ink distribution device is provided with at least one ink distributor, which can be moved back and forth in the axial direction of the first inking unit cylinder by a drive means and comprises an end protruding into the ink supply space at least in the working position and / or an ink outlet of a line system provided for supplying ink which opens into the ink supply space.
展开▼
