Inking unit for a printing machine

Abstract From the Canadian patent

The inking unit includes an inking device which is set against an inking roller provided with a resilient surface and creates a premetered ink film on the inking roller. A metering ledge wipes the premetered ink film to the size required for transfer to a forme cylinder; the wiped-off, excess ink runs off freely. The metering ledge, for the purpose of self cleaning executes a, movement preferably directed in the peripheral direction of the inking roller so that the area in contact with the inking roller and forming the metering gap constantly changes.