Device for metering ink on printing machines

摘要

The invention relates to a device for metering ink. The aim of the invention is to eliminate the interferences during metering of the ink which reduce the printing quality. The object consists in reducing the hydrodynamic effects of force and thus the deformations in the metering region, improving the adherence of the ink to the ink ductor and eliminating the particles of dirt which have entered the metering region. According to the invention, this is achieved in that the ink ductor which is provided with a profiled outer surface and rotates constantly at a slow speed is assigned a cutting roller which rotates at the speed of the cylinder. Between the outer surfaces of the ink ductor and the cutting roller there is a gap "s" which is equal to or smaller than the smallest adjustable gap "dmin" between the leading edge of the ductor knife and the ink ductor. <IMAGE>