Abstract: A plurality of longitudinal channels for supplying pressure medium are arranged within a carrier having a closed profile. A plurality of operating cylinders have pressure spaces which are flow-connected to the channels for moving the pressure rollers inward and outward in order to press coverings onto a printing unit cylinder.

Abstract: A printing unit includes a press unit having a forme cylinder, a transfer cylinder, an inking unit and, preferably, a damping unit. The inking unit of each press unit applies printing ink to a forme cylinder of the respective press unit in such a way that a ductor roll of an inking unit picks up printing ink kept ready in an ink fountain and applies it to the forme cylinder of the respective press unit by a film roll interacting with the ductor roll, inking unit rolls arranged downstream of the film roll, and at least one ink applicator roll rolling on the forme cylinder. Inking unit rolls driven in rotation and inking unit rolls driven in oscillation are are driven independently from one another on the drive side.

Abstract: A plurality of longitudinal channels for supplying pressure medium are arranged within a carrier having a closed profile. A plurality of operating cylinders have pressure spaces which are flow-connected to the channels for moving the pressure rollers inward and outward in order to press coverings onto a printing unit cylinder.

Abstract: A printing unit includes a press unit having a forme cylinder, a transfer cylinder, an inking unit and, preferably, a damping unit. The inking unit of each press unit applies printing ink to a forme cylinder of the respective press unit in such a way that a ductor roll of an inking unit picks up printing ink kept ready in an ink fountain and applies it to the forme cylinder of the respective press unit by a film roll interacting with the ductor roll, inking unit rolls arranged downstream of the film roll, and at least one ink applicator roll rolling on the forme cylinder. Inking unit rolls driven in rotation and inking unit rolls driven in oscillation are are driven independently from one another on the drive side.

Abstract: A printing unit having at least one press unit, wherein the press unit includes a form cylinder, a transfer cylinder, an inking unit and a damping unit applying damping solution to the form cylinder, wherein a relatively hard chromium-coated ro ceramic-coated roll which picks up the damping solution. According to the present invention, two relatively soft rolls are positioned between the relatively hard chromium-coated or ceramic-coated roll of the damping unit and the forme cylinder and both of the relatively soft rolls are in rolling contact with the forme cylinder and the chromium-coated or ceramic-coated roll. Accordingly, the damping solution picked up by the chromium-coated or ceramic-coated roll is applied directly to the forme cylinder by both relatively soft rolls.

Abstract: A plate cylinder of a printing press, with a tensioning channel which extends in the axial direction, in which means for fixing the plate ends of at least one printing plate which can be positioned on the plate cylinder are arranged. The leading plate end can be fixed by a holding element against a contact surface by means of a tensioning rail which can be moved in the tensioning channel. After that, and after the plate cylinder has been rotated, it is then possible to hook the trailing plate end on the extended tensioning rail. After that, it is possible to draw the tensioning rail back in again to tension the trailing plate end.

Abstract: An inking unit for a rotary printing machine includes an ink fountain, a pivotable ink fountain holder in which the ink fountain is mounted, an ink ductor, and a pivotable ink ductor holder in which the ink ductor is mounted. The ink ductor holder and the ink fountain holder are connected by an operating cylinder so that ductor and the ink fountain can be pivoted jointly to a first position in which ink flows out of the ductor without flowing out of the fountain, and so that the ductor can be pivoted away from the first position to a second position while the ink fountain remains in the first position, thereby creating a gap between the ductor and the ink fountain.

Abstract: A plate cylinder of a printing press, with a tensioning channel which extends in the axial direction, in which means for fixing the plate ends of at least one printing plate which can be positioned on the plate cylinder are arranged. The leading plate end can be fixed by a holding element against a contact surface by means of a tensioning rail which can be moved in the tensioning channel. After that, and after the plate cylinder has been rotated, it is then possible to hook the trailing plate end on the extended tensioning rail. After that, it is possible to draw the tensioning rail back in again to tension the trailing plate end.

Abstract: An inking unit for a rotary printing machine includes an ink fountain, a pivotable ink fountain holder in which the ink fountain is mounted, an ink ductor, and a pivotable ink ductor holder in which the ink ductor is mounted. The ink ductor holder and the ink fountain holder are connected by an operating cylinder so that ductor and the ink fountain can be pivoted jointly to a first position in which ink flows out of the ductor without flowing out of the fountain, and so that the ductor can be pivoted away from the first position to a second position while the ink fountain remains in the first position, thereby creating a gap between the ductor and the ink fountain.

Abstract: An apparatus for changing flexible printing plates on a plate cylinder of printing machines having a simple, compact and space-saving construction is provided. The apparatus includes two magazines arranged beside each other, to hold the printing plates to be inserted and removed. A transporting arrangement pivotably mounted on a shaft is beside the magazines. A holding arrangement which is on the transporting means is used both to grip and guide a printing plate to be inserted and to grip and guide a printing plate to be removed. The magazines and the transporting arrangement are mounted in a frame that can be pivoted towards and away from the plate cylinder. The invention further relates to a method of changing flexible printing plates on a plate cylinder of a printing machine.

Abstract: A device for fastening flexible printing plates to a plate cylinder of rotary printing machines is provided. The plate cylinder has a channel, a channel gap, and a bore. The channel accommodates bent ends of the printing plate. The bore in the channel is axially parallel to the plate cylinder. Two segmented shafts are arranged pivotally in the bore and have leaf springs which are fastened to the segmented shafts. The leaf springs can be brought into contact with the ends inserted into the channel. The channel has at least one lateral recess or cut out in an area which connects the bore radially to a channel gap on the periphery of the plate cylinder, and is at a distance form the channel gap. The end of the printing plate which is bent approximately at a right angle, is provided with a shaped element projecting in the direction of recesses in the channel. The shaped element of the end inserted into the channel can be moved into the recess by bringing the leaf springs into pressure contact with the bent end.

Abstract: An offset printing unit includes at least one cylinder pair with a form cylinder and a transfer cylinder. The transfer cylinder cooperates with an impression cylinder in such a way that ink can be applied to a printing material web guided between the transfer cylinder and the impression cylinder. In order to permit the economic production of multifarious products with a relatively low technical outlay, the form cylinder is fitted in the circumferential direction with one, and in the longitudinal direction with at least four, portrait printed pages in broadsheet format. The form cylinder may optionally be fitted with landscape printed pages in tabloid format or portrait or landscape printed pages in book format. A circumference of the form cylinder receives one flexible printing plate and a longitudinal length of the form cylinder receives at least one flexible printing plate.

Abstract: An offset printing unit includes at least one cylinder pair with a form cylinder and a transfer cylinder. The transfer cylinder cooperates with an impression cylinder in such a way that ink can be applied to a printing material web guided between the transfer cylinder and the impression cylinder. In order to permit the economic production of multifarious products with a relatively low technical outlay, the form cylinder is fitted in the circumferential direction with one, and in the longitudinal direction with at least four, portrait printed pages in broadsheet format. The form cylinder may optionally be fitted with landscape printed pages in tabloid format or portrait or landscape printed pages in book format. A circumference of the form cylinder receives one flexible printing plate and a longitudinal length of the form cylinder receives at least one flexible printing plate.

Abstract: A device for fastening flexible printing plates to a plate cylinder of rotary printing machines is provided. The plate cylinder has a channel, a channel gap, and a bore. The channel accommodates bent ends of the printing plate. The bore in the channel is axially parallel to the plate cylinder. Two segmented shafts are arranged pivotally in the bore and have leaf springs which are fastened to the segmented shafts. The leaf springs can be brought into contact with the ends inserted into the channel. The channel has at least one lateral recess or cut out in an area which connects the bore radially to a channel gap on the periphery of the plate cylinder, and is at a distance form the channel gap. The end of the printing plate which is bent approximately at a right angle, is provided with a shaped element projecting in the direction of recesses in the channel. The shaped element of the end inserted into the channel can be moved into the recess by bringing the leaf springs into pressure contact with the bent end.

Abstract: A device for fastening flexible printing plates to a plate cylinder of rotary printing machines having a channel in the plate cylinder which accommodates bent ends of the printing plate. A bore in the channel is axially parallel to the plate cylinder and has two segmented shafts arranged pivotably therein. Leaf springs are each fastened to the segmented shafts and can be brought into contact with the ends of the printing plate inserted into the channel. A region radially connects the bore to a channel gap on the periphery of the plate cylinder. The channel has lateral recesses at a distance from the channel gap and, the approximately rectangularly bent ends of the printing plate are equipped with shaped elements which project into the channel in the direction of the recesses. The shaped elements of one or both ends inserted into the channel can be moved into the recesses by bringing the respective leaf springs into contact while bending the ends.

Abstract: An impression cylinder for a rotary printing machine is equipped with outlet orifices for feeding a pressure medium into a slot for the purpose of lifting off a flexible plate from the outer surface of the impression cylinder. The orifice on the circumference of the impression cylinder is inclined in the direction of rotation of the cylinder. The ends of the plate are insertable into the slot and are secured therein against slipping out. The impression cylinder includes a cavity which runs in the longitudinal direction separately from the slot and is capable of being subjected to the pressure medium. The cavity includes at least one duct which is connected to the outlet orifice arranged in a side face of the slot. The side face is adjacent to the trailing end of the plate in the region of the slot orifice on the circumference of the impression cylinder.

Abstract: A cassette for a wedge-shaped ink well of a printing machine has a bottom and a rear wall and two side walls. A front of the cassette, opposite the rear wall, faces a duct roller of the printing machine when the cassette is inserted into the ink well and is open. A handle connected to the upper portions of the side walls is positioned such that the cassette tends to incline to prevent ink from flowing out of the front of the cassette when the cassette is handled outside of the printing machine. The bottom and the sides of the cassette are sealed against the ink well adjacent to the duct roller. A seating arrests movement of the cassette relative to the ink well when the cassette is inserted in the ink well thus ensuring that the duct roller uniformly inked between sides of the ink well.

Abstract: An inking apparatus for rotary printing machines includes a rotatably mounted, drivable ink roller and at least one ink container mounted such that it can be swivelled away from the roller, favoring cleaning and ink change. The swivelably mounted ink container permits the ink container to be emptied in an operator-friendly fashion avoiding ink residues to the greatest possible extent and also permits thorough cleaning of the ink container and the roller with good accessibility. The roller is mounted in a separate holder and the holder is mounted in the frame in such a way as to be swivelable separately from as well as together with the ink container.

Abstract: An inking unit for a rotary printing machine, a frame and a plurality of rollers. The plurality of rollers includes two inking rollers fixedly mounted to the frame so as to be spaced from one another, and a transfer roller mounted between the two inking rollers. Bearing levers are pivotably mounted to one of the two inking rollers. The transfer roller is mounted to the bearing levers so as to be pivotable between an operating position between the two inking rollers and a pivoted-out position away from the two inking rollers. Roller holders are provided for adjustably holding the transfer roller on the bearing levers. Finally, an apparatus is provided for compensating for the holding weight of the transfer roller and the bearing levers during pivoting.