Abstract: A printing plate end clamping apparatus engages generally Z-shaped beveled plate ends of a printing plate. A pair of spaced plate end securing flanges and a central clamping bar are shaped to cooperatively engage and sandwich the beveled plate ends. The printing plate is secured to the cylinder in a shape conforming manner.

Abstract: A device for fastening a printing packing to a jacket surface of a printing cylinder uses a clamping carriage that is supported in a cylinder trough. The clamping carriage carries a clamping frame having a clamping face which cooperates with a clamping surface on a lateral trough wall. Clamping of the packing is accomplished without disturbing the position of a gripper device located in the cylinder trough. Transfer of the print material sheets free of register errors is made possible.

Abstract: An ink roller for a rotary printing press has a hollow axle that receives ink from a pressurized ink supply. The axle is provided with a plurality of radial bores that are selectively aligned with similar radial in concentrically arranged inner and intermediate sleeves. A porous outer sleeve is concentric with the intermediate sleeve. The inner sleeve oscillates on the axle while the intermediate sleeve and the outer sleeve both rotate at different speeds to provide the outer sleeve with a positive rotational speed differential.

Abstract: A web guide roller assembly for a printing machine utilizes a cylindrical roller support body and a concentric hollow roller body. An annular space between the support body and the roller body is filled with a pressure medium so that the roller body floats on the support body. Suitable end seals are utilized to prevent escape of the pressure medium.

Abstract: An inking unit washing assembly utilizes a pair of cooperating rollers in a housing. A first one of these rollers has a polygonal surface and engages a second, rubber cylinder which, in turn is in contact with a roller or drum of the inking unit to be cleaned. A washing solution is sprayed onto the polygonal roller after having been transferred to and back from the ink roller or drum to be cleaned.

Abstract: The apparatus has as many invalidating units (E) arranged next to one another as there are longitudinal rows of security prints on the print carriers (P). Each invalidating unit (E) has a stand (1), a trough (3) vertically displaceable in the latter and intended for receiving ink (4), a centrifugal wheel (7) rotating continuously above the trough (3), and a shutter (11) which interacts with an orifice (10) of a cowl (9) covering the centrifugal wheel (7). By means of a controlled actuating member (6), the trough (3) is adjustable between a raised working position, in which the centrifugal wheel (7) dips into the ink and the shutter (11) exposes the orifice (10), and a lowered position of rest, in which the centrifugal wheel (7) does not dip into the ink and the orifice (10) is covered by the shutter (11).

Abstract: A printing plate end bending apparatus utilizes a machine table having a printing plate abutment surface together with plate leading and trailing end support saddles which each also have plate end abutment surfaces. Each plate end saddle is provided with pivotable side plates that carry plate end hold-down members and bending beams.

Abstract: A sheet feeder and accelerator for feeding of sheets, which have been aligned at front register lays, to a sheet-treating machine uses a driven accelerating roller and a plurality of cooperative pressure rollers. The time of contact between these rollers is varied by axially shifting of a control drum which has a control recess that is provided with an axially varying opening or switching angle.

Abstract: A printed sheet removal assembly selectively disengages sheets from the grippers of a sheet transport by actuation of a pivotable switch lever that moves an axially slidable rotating switch shaft. A two step switch cylinder is carried by the switch shaft and has adjacent rolling surfaces. One of these rolling surfaces is cam shaped and causes a control roller to move a gripper opening segment into the path of a sheet gripper. The switch cylinder is spring loaded and returns to its switched off position once the switch lever has been released.

Abstract: A liquid transport mechanism for use particularly in transporting and evenly distributing printing ink in a rotary printing machine is disclosed. A plurality of generally cone shaped ink transport rollers are placed about the periphery of one or more ink relief equalizing cylinders. The axes of rotation of the rollers are angled with respect to the axes of rotation of the ink relief equalizing cylinders. The covered surfaces of the rollers, which are disposed generally in pairs, contact the surface of the ink cylinders to form ink bridges which split the ink coating on the cylinders and cross transport it longitudinally along the length of each of the ink relief equalizing cylinders. The ink metering unit in accordance with the present invention uniformly and rapidly equalizes ink thickness without the need for ink zone adjusting screws and doctor blades.

Abstract: A liquid transport mechanism for use particularly in transporting and evenly distributing printing ink in a rotary printing machine is disclosed. A plurality of generally cone shaped ink transport rollers are placed about the periphery of one or more ink relief equalizing cylinders. The axes of rotation of the rollers are angled with respect to the axes of rotation of the ink relief equalizing cylinders. The covered surfaces of the rollers, which are disposed generally in pairs, contact the surface of the ink cylinders to form ink bridges which split the ink coating on the cylinders and cross transport it longitudinally along the length of each of the ink relief equalizing cylinders. The ink metering unit in accordance with the present invention uniformly and rapidly equalizes ink thickness without the need for ink zone adjusting screws and doctor blades.

Abstract: An inking unit for use in a rotary printing machine is disclosed. A plurality of endless belts are placed side by side along the surface of a driving roller. These belts transport a liquid medium such as printing ink or damping fluid along the surface of a covering of a cylinder in the direction of the longitudinal axis of the cylinder. The liquid medium is transported by the belts from a position of excess ink to a position of less ink thereby ensuring a uniform distribution of the liquid along the surface of the roller.