Abstract: A doctor blade for wiping excess printing ink off the surface of a printing form (10) has a front section in the form of a leaf (3) which interacts with the surface of the printing form (10). In order to avoid wear or damage to the printing form surface as a result of the contact pressure exerted by the leaf (3) on the printing form surface, the leaf (3) is provided with a coating (5) over the entire doctor blade length. The coating (5) consists of lubricant or contains lubricant particles (8). As a result of the significant reduction in friction between the leaf (3) and the printing form surface, not only is the wear on the printing form surface reduced, but the wear on the doctor blade is also reduced, and its service life is extended.

Abstract: A shaft bearing for mounting the shaft ends of a rotating workpiece to be machined, especially an intaglio printing cylinder, has a rotatably mounted clamping chuck clamping the shaft end and having a hollow clamping head. The clamping head has gripping parts mounted so as to be radially adjustable relative to the longitudinal axis of the clamping head. Each gripping part is mounted rotatably about a pivot axis extending parallel to the longitudinal axis, and is guided, in a region distant from the pivot axis, along an arcuate guide track extending around the longitudinal axis. Each gripping part is configured so as to extend at a decreasing distance from the longitudinal axis and being movable relative to the guide track for the purpose of clamping the shaft end.

Abstract: Formed in a basic body (13) connected to a drive spindle is a supporting surface (15a) which is at right angles to the rotational axis (10a) of the basic body (13) and on which one end face (16a) of a rotatable setting disk (16) rests. The other end face (16b) of the setting disk (16) is inclined relative to the first mentioned end face (16a). Resting on the setting disk (16) is a cutter holder (17) in which a cutter (18) is held. The cutting edge (19) of this cutter (18) runs approximately in the radial direction. The inclination of the cutting edge (19) of the cutter relative to a plane disposed at right angles to the rotational axis (10a) can now be changed by turning the setting disk (16), as a result of which the desired quality of the circumference of the machined gravure cylinder can be achieved without the cutting edge (19) of the cutter needing to be ground very accurately.