Abstract: The invention relates to a folding device for printing presses or folders which does not require pressure brushes for fixing the printed product on surface inlet and outlet sections folding table. The folding device (11) which includes a folding table (4), at least one stop (8) associate with the folding table (4), a plurality of transfer belts (5) for engaging and transferring printed products (3) onto said folding table to said at least one stop, a pair of rotatably driven folding rolls (7), a folding blade (2) moveable relative to the folding table (4). The transport belts (5) can be set against inlet and/or outlet sections (9, 10) of the folding table (4) forming full-area contact in order to fix the printed product (3) in position for folding, and the inlet and/or outlet sections (9, 10) are situated just in front of and just behind the printed product (3).

Abstract: A method for printing a substrate web in a rotary printing press is disclosed. The substrate web to be printed is conveyed through a printing form-based printing unit for static printing of the substrate web with a print image that does not vary for the print copies of a printing job, such that at least one static print page is printed in the longitudinal direction of the substrate web per revolution of the form cylinder and several static print pages are printed on the substrate web across the longitudinal direction of the substrate web. In addition to static printing, the statically printed substrate web is printed dynamically with a variable print image in the area of a printing form-free printing device of the rotary printing press such that the print format of the printing form-free printing device extends in at least some sections over at least two statically printed pages.

Abstract: A method for reducing the strikethrough effect in inkjet printing on thin substrates is disclosed. The method includes determining a normal print quality; determining a normal quantity of ink which would be used for inkjet printing of a certain print image on a strikethrough-resistant substrate, based on the normal print quality; determining a minimal print quality for the print image to be printed; determining a maximal value for the strikethrough effect; reducing the normal quantity of ink to a reduced quantity of ink, so that the print image has at least the minimal print quality and the maximal value of the strikethrough effect is not exceeded.

Abstract: A printing unit of a web-fed rotary printing press with several printing couples is disclosed. Each printing couple features a transfer cylinder, a plate cylinder, an inking couple and preferably a dampening unit, where the transfer cylinder, the plate cylinder, and rollers of the inking couple and if applicable of the dampening unit of each printing couple, are coupled on the drive side via gears and jointly positioned on side walls of the printing unit. Independently driven ink fountain rollers of the inking couples together with an ink fountain as well as a film roller of the inking couples are positioned on separate side walls in such a way that, in the region of each printing couple, the ink fountain roller, the ink fountain as well as the film roller of the respective inking couple are displaceable relative to the cylinders and rollers of the printing couples.

Abstract: A rotary printing press is disclosed. The press includes at least one plate-free printing unit for printing a substrate web with a static print image for print copies of a print job and at least one plate-free printing unit, in particular an inkjet printing unit for printing the substrate web with a dynamic print image. The/each plate-free printing unit can be shifted from a printing position in which the substrate web can be printed by the same printing unit, into a service position in which no substrate web can be printed by the same printing unit. A device which is assigned to the service position is printable by at least one plate-free printing unit that is shifted into the service position, such that the printing parameters of the same can be verified and adapted to subsequent printing of the substrate web in the printing position.

Abstract: The invention relates to a method for controlling a machine processing sheet material. The processing machine has at least one printing or coating group and a cylinder that is coupled to a direct drive and is decoupled mechanically from a main drive acting on a gear train of a plurality of sheet transport cylinders and that can be driven in a given way at least relative to the sheet-guiding cylinders. The cylinder having an associated inking group with an inking group roller that can be driven by the main drive and gear train. Printing contact in a contact zone of the cylinder carrying the printing form with an adjacent rubber blanket cylinder is cancelled for cleaning. The inking group roller of the inking group is separated on a drive side from the sheet transport cylinders driven by the main drive and gear train. The inking group roller is coupled on the drive side to the cylinder carrying the printing form.

Abstract: A printing unit of a web-fed rotary printing press with several printing couples is disclosed. Each printing couple features a transfer cylinder, a plate cylinder, an inking couple and preferably a dampening unit, where the transfer cylinder and the plate cylinder of each printing couple are positioned jointly on side walls of a frame of the printing unit, and where the printing unit is aligned in the web-fed rotary printing press via bearing devices which engage on the frame of the printing unit. Rollers of the inking couples and/or dampening units of the printing couples are positioned on separate supporting walls such that the supporting walls are displaceable with respect to the side walls on which the transfer cylinders and plate cylinders of the printing couples are positioned, in order to facilitate access to the cylinders and the rollers of the printing couples.

Abstract: A method for printing a printing substrate is disclosed. The printing substrate is printed by a printing-plate-based printing method, in particular by an offset printing method, with a printed image that is the same for printed copies of a print job and therefore with a static printed image as well as, in addition to the printing-plate-based printing method, by a non-printing-plate-based printing method, in particular an inkjet printing method, with a printed image that is variable for the printed copies of the print job and therefore with a dynamic printed image. After the static and dynamic printing of the printing substrate, each printed copy is detected using measuring techniques and recorded at least in sections in such a manner that each printed copy is verifiable with respect to its authenticity.

Abstract: An apparatus for acquiring and evaluating an image of a predetermined extract of a printed product removes the effects of scattered light to improve the accuracy of image evaluation. The apparatus uses a camera that has an electronic image sensor with a two-dimensional arrangement of sensor elements. An aperture stop is arranged in the beam path of the camera for shadowing a predetermined part of the image sensor. When an acquired image is read from a part of the image sensor that is not shadowed, corresponding readings from the shadowed portion of the sensor are subtracted from the acquired image to obtain intensity signals corrected for scattered light.

Abstract: A turner bar assembly of a web-fed printing press is disclosed. The turner bar assembly includes at least one turner bar, which is mounted so that it is translatorily movable on a linear guide and can be acted upon with blast air. The blast air flows through the linear guide in such a way that the blast air can be conveyed to the respective turner bar via the linear guide.

Abstract: A method that combines a cold film transfer method with an inline embossing apparatus within a sheet-fed printing press is provided. The method includes the step of applying an adhesive coating to image areas on a printed sheet using an application mechanism. The printed sheet with the adhesive is conducted to a coating module. Image-forming layers are transferred from a transfer film that is guided through a transfer nip defined by an impression cylinder and a pressing roller in the coating module. The transfer film is guided through the transfer nip in such a way that a side of the transfer film coated with an image forming layer lies on the printed sheet guided on the impression cylinder and is guided together with the printed sheet under pressure through the transfer nip. The image-forming layer adheres in the image areas provided with adhesive on the printed sheet and is lifted from the carrier film.

Abstract: An apparatus and method for webbing-up a printing substrate web or a partial web in the regions of a web-fed rotary printing press without an automatic webbing-up device, is disclosed. A webbing-up aid includes a threading tip for manually threading the webbing-up aid along a web path being webbed-up, a clamping piece for clamping one end of the printing substrate web or partial web being webbed-up, and a cable-like connecting element positioned between the threading tip and the clamping piece. The clamping piece includes two magnetic clamping sections that can be pivoted relative to each other, between which the end of the printing substrate web or the partial web being webbed-up can be clamped. The threading tip is also embodied to be magnetic so that when the webbing-up aid is being threaded, the threading tip can be can be placed on metallic or metallized web guide elements.

Abstract: An apparatus and method for webbing a substrate web into a web-fed rotary printing press is disclosed. A webbing apron has a first connecting section, which can be connected to a longitudinal end of the substrate web, and has a second connecting section, which can be connected to a webbing arrangement for the substrate web of the printing press. The webbing apron includes at least two webbing apron elements, each of which is assigned to one of at least two partial substrate webs of the substrate web for webbing the same, and has a connecting device, which connects the webbing apron elements to one another in such a way that the webbing apron elements can be separated from one another by a predetermined tensile force acting on the connecting device and resulting from a relative movement of the partial substrate webs relative to one another.

Abstract: A method for operating a rotary printing press is disclosed. The printing press having multiple printing units for printing at least one substrate web, a folder superstructure downstream from the printing units, having at least one former for lengthwise folding of the/each substrate web and/or partial webs of the/each substrate web, and having a folder downstream from the folder superstructure for separating copies and for forming at least one lengthwise fold and/or cross fold on the separated copies. Modules of the folder superstructure serving at least to process the/each substrate web and/or partial web are essentially adapted to the increase in width which occurs in printing of the/each substrate web.

Abstract: A web-fed rotary printing press is disclosed. The printing press having several printing units and having a folding unit, and a turner bar nest and folding superstructure positioned between the printing units and the folding unit, in which at least one printing substrate web can be separated into partial webs and/or the or each printing substrate web or the or each partial web can be conveyed via turner bars and/or guide rollers to at least one former. At least one guide roller is respectively positioned along the transport path of the or each printing substrate web and/or the or each partial web through the turner bar nest and the folder superstructure, whose two ends are each assigned an adjusting unit, via which the respective end of the respective guide roller can be displaced linearly in and/or opposite from the running direction of the respective printing substrate web or partial web.

Abstract: A handling device of a printing press, in particular for handling printing plates during an automated printing plate change on a printing unit of a printing press, is disclosed. The handling device has a manipulator arm, where one end of the manipulator arm is assigned a manipulator head, which features a handling element, in particular a holding element for printing plates, and the manipulator arm is embodied in a multi-part manner of several segments. A swivel axis is embodied on each end of each segment, around which at least the respective segment can be swiveled, and each swivel axis is assigned a separate drive for providing the respective swivel movement. The other end of the manipulator arm is mounted so it is translatorily and rotationally movable on a traverse or on a frame or on a wall of the printing press.

Abstract: A method and an apparatus for driving a fan wheel of a web-fed printing press is disclosed. The fan wheel is driven, at least in a predetermined time period (tv-tD) in the production cycle, at a fan wheel speed, which in addition to a rotary drive speed component is comprised of an oscillating speed component.

Abstract: A functional unit for a rotary printing press and a rotary printing press having such a functional unit is disclosed. The functional unit has an assembly unit to receive at least one component of the functional unit, in which the assembly unit has at least one assembly section, at least one assembly opening that is formed in the assembly section and in which the at least one component is received, and a support section on which a weight load is supportable. A component-free opening that in one cross-sectional dimension is at least as large as one cross-sectional dimension of the assembly opening is provided in the assembly section between the support section and the at least one assembly opening. Pre-stresses induced by the weight load on a bearing element are thereby inexpensively reduced or avoided for the component.

Abstract: A printing press central control console of a web-fed printing press is disclosed. An operator console includes several operating elements for ink-zone adjusting elements of inking couples. Two groups of operating elements are positioned on one side of the row of operating elements for the ink-zone adjusting elements. A further group of operating elements is positioned next to the first group of operating elements at the distance of the widest newspaper printing format. The three groups of operating elements extend perpendicular to the row of operating elements for the ink-zone adjusting elements. The total number of operating elements in the row is designed for a commercial web printing format, and the number of operating elements in the row, which is arranged between two of the groups of operating elements, is designed for a newspaper printing format, which features a fraction of the axial width of the commercial web printing format.

Abstract: A method and device for blanket wash-up in the case of a printing couple of a rotary printing press, is disclosed. In order to wash up blankets, blanket plates or blanket sleeves on blanket printing cylinders in a time-saving and cost-effective manner by a blanket wash-up device, during delivery wash-up with paper, a separation of the paper web speed from the circumferential speed of the blanket printing cylinder is realized. As a result, it is possible to realize a high rotational speed of the blanket printing cylinder and therefore a high relative speed at the wash-up location with high water usage while only small amounts of paper are used.