Abstract: A process is disclosed for producing an ink knife for the ink duct roller of a printing machine from an at least about 2 mm thick metal plate. Parallel slits are formed which extend from the working edge of the ink knife over part of the plate width and form lamellas of color zone width. Parallel transverse and blind-ended grooves which start at the working edge are first cut into the metal plate at intervals which correspond to the width of the color zones. Afterwards, a continuation rating groove that extends parallel to the working edge is cut in the area of the blind ends of the transverse grooves, preferably on at least one side of the metal plate. Finally the metal plate is completely cut through in the area of the transverse grooves, preferably by means of laser beams, forming a narrow slit at intervals which correspond to the width of the color zones.

Abstract: The offset printing machine comprises at least one flexible ink blade (14) which, angled in the direction of an ink roller (12), borders an ink bath (40) and can be bent in zones to different degrees against the cylindrical surface of the ink roller (12), and adjustment means for bending the ink blade edge (36). The adjustment means has tappets (92) axially displaceable in a guide and an adjustment cam (62) allocated to each, with the cam axis (L) parallel to the ink roller axis (A). The tappets (92), preferably individually adjustable length-wise, are pressed by springs (100) against the peripheral surface (72) of the adjustment cam (62). The self-locking positionable adjustment cams (62) are arranged alternately in the modular principle with bearing jaws (64) for their non-rotatable coaxial bearing bolts (60) on a mounting rail (56), for interchargeable mounting as a control unit (58) directly or via an adapter on an offset printing machine.

Abstract: A knife designed as a flexible steel plate for the ink ducts of an offset printing machine has blades in the area of the working edge which can be bent differently in zones against an ink ductor by individually adjustable regulator elements. The multiple blade ink knife designed as an autonomous unit. It comprises two-part side jaws attached on both sides to a knife holder, each with an outer metal jaw and an inner plastic jaw which presses resiliently against the front of the ink ductor and the knife. This suitably has a groove, recessed at least in the area of the knife dipped into an ink bath, which is filled with an elastic sealant. At least the blades of a knife designed as a flexible metal plate, also an autonomous unit, are fully covered on the top with a flexible metal strip applied by adhesive.