Abstract: A rubber sleeve for a printing press, having an at least two-layer structure, is disclosed. The rubber sleeve has an inner layer formed as a carrier layer and an outer layer formed as a functional layer and used for the printing process, the carrier layer and the functional layer being a constituent part of a rubber blanket, which is shaped in the manner of a sleeve in order to form the rubber sleeve and is connected to itself in the region of mutually opposite joint faces of the carrier layer and the functional layer. At least the joint faces of the carrier layer being enlarged in such a way that the same absorb circumferential forces acting on the rubber sleeve.

Abstract: The invention relates to a sheet-guiding device in a printing machine. The object of the invention is to provide such a sheet-guiding device which in a printing/varnishing unit that is not involved in the printing/varnishing process, permits the smear-free passage of the printing material in a printing/varnishing nip. This is achieved in that on the blanket/plate cylinder 12, 2 there is arranged a printing plate with an ink/varnish-repellent surface coating, it being possible for the blanket/plate cylinder 12, 2 to be driven at the machine speed, and the sheet-carrying cylinder 1 conveying the printed or varnished printing material.

Abstract: A printing and/or varnishing machine having a plurality of sheet-guiding cylinders in which at least one of the cylinders has an outer detachable packing which has enhanced ink repellent characteristics and which significantly reduces wear. The packing has a layered structure which includes a flexible backing material 12, the underside of which is assigned to the base body of the sheet-guiding cylinder 3, a coating 13 of molybdenum or tungsten carbide/cobalt which is adhesively applied to the upper side of the backing material 12, and a sealing layer 14 of a material made from the group of polysiloxanes which is adhesively applied to the upper side of the coating 13. The side of the packings 5, 6 which faces the material to be printed has a surface profile consisting of cones 18 with rounded tips 16 for reduced sheet contact.

Abstract: To provide a device for fixing a covering to a printing-unit cylinder in which, while implementing a narrow gap in the cylinder circumferential surface, the legs of the covering can be tensioned easily and reliably, a spindle bears a trailing channel edge of a tension channel the trailing channel edge can be moved away from the leading channel edge by pivoting the spindle.

Abstract: A printing and/or varnishing machine having a plurality of sheet-guiding cylinders in which at least one of the cylinders has an outer detachable packing which has enhanced ink repellent characteristics and which significantly reduces wear. The packing has a layered structure which includes a flexible backing material 12, the underside of which is assigned to the base body of the sheet-guiding cylinder 3, a coating 13 of molybdenum or tungsten carbide/cobalt which is adhesively applied to the upper side of the backing material 12, and a sealing layer 14 of a material made from the group of polysiloxanes which is adhesively applied to the upper side of the coating 13. The side of the packings 5, 6 which faces the material to be printed has a surface profile consisting of cones 18 with rounded tips 16 for reduced sheet contact.

Abstract: A short inking unit for a planographic printing unit that has a compact design and is operable for transferring an ink film to a form cylinder with high uniformity and stability. This short inking unit includes an applicator roll arrangement having a plurality of applicator rolls (5, 6; 5, 6, 15) which each interact with the form cylinder (1) and are offset with respect to one another in the direction of rotation of said form cylinder (1), and a plurality of engraved rolls (7, 8; 7, 8, 13; 17, 7, 8; 17, 7) which are offset with respect to one another in the direction of rotation of the form cylinder (1) and which each have a respective ink supply for applying ink to the engraved roll. The applicator rolls and engraved rolls form a roll train having rolls which roll on one another in pairs with each pair of rolls including one applicator roll (5, 6, 15) and one engraved roll (7, 8, 13, 17) interacting at a roll nip of the roll train.

Abstract: A support sleeve made of a metallic material, preferably of nickel, is provided at at least one longitudinal end with a chamfer running all around in the inner circumference. This prevents damage to a film-like coating or thin intermediate sleeve, which surrounds the cylinder core to which the sleeve is fitted. A device for chamfering and deburring the longitudinal ends of the sleeve include a supporting body having a cylindrical journal with a diameter only slightly smaller than the internal diameter of the sleeve to be machined, in order to accommodate a longitudinal end of the sleeve and to guide the cut. A cutting holder is machined on the supporting body by means of which holder a cutter can be brought up to the inner circumference of the longitudinal end of the sleeve to be machined, and the supporting body can be rotated relative to the sleeve to be machined and pushed onto the journal.

Abstract: A state information system for acquiring measured values of chemical and/or physical variables during the production, processing or finishing of a material, in particular in the case of a printing material web in a web-fed press, includes at least one sensor for recording the chemical and/or physical variables, the state information system being provided on or in the material such that the operating process carried out with the material remains unaffected by it.

Abstract: A printing press dryer having an excimer radiant heater adapted for high energy output and compact mounting within the printing press. The heater includes a housing (1) within which a plurality of radiant tubes (2,3) are arranged in parallel relation to each other, and the radiant tubes (2,2) each have a respective adjacent reflector section (4,5) for directing a predetermined radiation distribution on passing printed sheet material.

Abstract: A washing apparatus for printing and/or coating mechanisms in a processing machine is provided. The washing apparatus permits a stable disposal of soiled cleaning fluid and noticeably reducing the disposal expense in at least one printing/coating mechanism. To that end, between at least one washing apparatus 7.1, 7.2, 7.3 and a return line feeding into a holding container, there is a piston pump on the line side coupled to a machine controller.

Abstract: A transfer cylinder sleeve is provided for an offset printing machine including an inner carrier layer, a compressible layer and a covering layer, where at least one of the layers has a joint or a gap and provided that when a joint or a gap is used in the covering layer, then the transfer cylinder sleeve is applied to a transfer cylinder in register so that the joint in the covering layer rests opposite a tension channel of a plate cylinder during rolling contact of the transfer cylinder with the plate cylinder. Optionally, a non-stretchable layer is provided between the compressible layer and the covering layer, or alternatively, a non-stretchable material is provided in the compressible layer itself.

Abstract: An applicator device for a printing/varnishing unit in a processing machine is provided. The applicator device helps prevent jolts caused by a cylinder channel and thereby increasing the print quality. The applicator roller 5, 6, 7 is associated with a cylinder channel 10 of a printing cylinder 1. The applicator roller 5, 6, 7 consists of a roller core 12 on which at least one compressible layer 13 and a cover layer 14 are concentrically arranged.

Abstract: An erasing and cleaning apparatus for cylinders an erasing and cleaning apparatus for cylindrical surfaces in a printing press includes a positioning unit with side walls and a cleaning cloth transport device arranged in said positioning unit and having a clean cloth roll, a wash roll, and a dirty cloth roll. An intermittently operated pneumatic or hydraulic linear drive having a stroke movement is connected to said cleaning cloth transport device for advancing a cleaning cloth off of the clean cloth roll, over the wash roll, and onto the dirty cloth roll. At least one of the sidewalls includes bearing elements for the clean cloth roll, the wash roll, and the dirty cloth roll. A gearwheel is connected to one of the bearing elements by one of a freewheeling and overrunning clutch for converting the stroke movement of the drive into a rotary movement.

Abstract: A rubber cylinder sleeve has a rubber covering with a layer construction which includes, at a distance from the outer surface, compressible layer elements and layer elements which influence the stiffness (S), such as filaments/yarns or fabric structures. The layer elements which influence the stiffness (S), are incorporated uniformly in the circumferential direction but are prestrained to various degrees in a defined manner in the direction of the sleeve axis, so that a stiffness profile is produced across the sleeve width, which profile is symmetrical with respect to the center of the sleeve width.

Abstract: A cutting cylinder is mounted such that it can rotate and be driven and is provided with four cutting blades on its circumference, which blades divide the circumferential length into four sections arranged on the circumference of the cutting cylinder.

Abstract: The invention relates to a delivery device for a sheet-processing machine. The object of the invention is providing a delivery device on a sheet-fed rotary printing machine, that can be universally used and permits quality control of the printed and/or laminated sheets. to this end the delivery device includes rotating sheet feeding system 5 supplying the printed sheets to a first delivery stack 9 and with a drum 7 acting as a turnout point in front of this delivery stack 9 in the transport direction 2 for selective sheet removal. The drum 7 is allocated to the sheet feeding system 5. A vacuum table 14 coupled with a pneumatic system and with at least one rotating suction belt for suctioning, transporting, and positioning a sheet is arranged downstream from the drum in its rotational direction. At least one quality control device 12 for inspecting the sheet is arranged at a distance to the vacuum table 14, with the second delivery system 8 being arranged downstream from the vacuum table 14.

Abstract: A non-flowing protective medium is applied in a finely distributed manner through a metering nozzle by means of blown air to the non-printing regions of at least one roll of an inking unit or damping unit and/or the non-printing regions of at least one transfer cylinder or forme cylinder, forming a thin-layer protective film. Ink is thereby prevented from drying out in non-printing regions of the rolls and cylinders of the printing unit, and the tack is thus kept at a low level, in order to reduce the risk of web breaks.

Abstract: The invention relates to the drive of a printing machine. Cylinders and functional groups are to be driven with low technical expenditure. To this end, all form cylinders (1.1, 1.2) in a printing unit, for example, are driven respectively by separate electric motors (7) and are not in mechanical drive connection.

Abstract: A web fed rotary printing unit is provided. The printing unit includes comprising a plurality of cylinders including a first cylinder assigned a first adjustable drive motor and a second cylinder assigned a second adjustable drive motor. The first and second cylinders are in a mechanical drive connection that can be moved between engaged and disengaged positions. When the mechanical drive connection is engaged, the first drive motor assigned to the first cylinder forms a master drive in dependence on which the second drive motor assigned to the second cylinder can be controlled in the manner of a slave drive.

Abstract: The printing-material web is guided in the same position and plane when the transfer cylinders are moved apart for the flying printing-plate change, so that contact between the web and the transfer cylinders and smearing are avoided, that is to say undesired contact with ink-carrying parts. When the transfer cylinders are moved apart, web-guiding elements at the web inlet and/or web outlet support the printing-material web on both sides during the plate or sleeve change by supporting elements which are narrow or act at points and can be displaced transversely with respect to the printing-material web. The printing-material web continues to be guided in the same position and plane, and smearing is avoided.