Abstract: Examples include a device for providing sheet-format substrate sections from a web-format substrate. The device includes a roll unwinder for inlet-side feeding of the web-format substrate. Two application devices act on the same first side of the web substrate, and are formed by coating units for supplying, to the same first side of the web substrate, a varnish that forms a barrier layer. A drying device is provided between a cross-cutting device and an upstream first coating unit and/or the drying device is provided in the substrate path between the two coating units and the cross-cutting device. The web-format substrate can be cut into sheet-format substrate sections and, at the outlet, the substrate sections can be provided for subsequent processing or output to a delivery unit.

Abstract: At least one printing fluid of a printing fluid supply system of a printing press is changed. A printing unit of the printing press includes a print head. At least a first printing fluid or second printing fluid is selectively conducted from at least one supply unit to the print head. The at least one supply unit includes a reservoir of the first printing fluid and a reservoir of the second printing fluid. The at least one supply unit further includes an intermediate tank of the first printing fluid and an intermediate tank of the second printing fluid arranged between the reservoirs and the print head in the flow direction of printing fluid. The first and second printing fluids are conducted from their respective intermediate tanks to the print head, and there is no return of the printing fluids from the intermediate tanks to the respective reservoirs.

Abstract: In some examples, a printing press includes a non-impact printing device, and further includes a plurality of processing stations that each process sheets. In the printing press, at least one lifting nozzle is arranged in a profile element of a guide device. The lifting nozzle is configured to open in a direction of a tip of a tapered profile element. A suction belt feed table includes a catching device having a catching position, which is assumed as a result of an actuation, for adjacent individual sheets that follow one another. The catching device, in its catching position, catches sheets on the suction belt feed table that are fed from a first transport device, which is arranged upstream from the suction belt feed table, to the suction belt feed table, before the sheets are transferred to a transport device arranged downstream from the suction belt feed table and stacked there.

Abstract: In some examples, a sheet-fed printing unit is configured as a screen printing unit and includes at least one screen printing forme cylinder and at least one impression cylinder cooperating therewith. A cylinder barrel of the impression cylinder includes a supporting surface for sheets, and which includes at least one impression portion having a constant barrel radius that extends over an angle of at least 170 degrees about the axis of rotation of the impression cylinder. The screen printing forme cylinder has an effective screen radius that is smaller than a barrel radius of the impression cylinder, and the effective screen radius is larger than half the barrel radius.

Abstract: A printing machine includes a plurality of inkjet print heads arranged together in a printing unit and controlled by a control unit. At least two of the inkjet print heads are jointly arranged in relation to a stationary position in a transport path at a printing nip. The control unit activates a first inkjet print head when a substrate of a first substrate type moves past the stationary position, and activates a second inkjet print head when a substrate of a second substrate type moves past the stationary position. The first substrate type and the second substrate type differ from each other in material and/or nature of a surface to be printed. The inkjet print heads arranged in the printing unit are each configured to print an ink that comprises at least one colorant, both for the first substrate type and for the second substrate type.

Abstract: In some examples, a processing machine for processing a substrate includes at least one shaping unit. The at least one shaping unit includes at least one forme cylinder and at least one impression cylinder. A processing point for processing a substrate is arranged between the at least one forme cylinder and the at least one impression cylinder. The processing machine includes a control unit for correcting a processing length of the substrate, and which controls a speed of at least one of the at least one forme cylinder or the at least one impression cylinder. The at least one forme cylinder and the at least one impression cylinder have a speed ratio with respect to one another that is changeable at the processing point as a function of the processing length of the substrate, and the speed ratio differs at least once within a full cylinder revolution.

Abstract: In some examples, a processing machine for processing a substrate includes at least one shaping unit and/or at least one application unit. The at least one application unit and/or the at least one shaping unit in each case includes at least one forme cylinder and at least one impression cylinder. The at least one forme cylinder of the application unit includes at least one application forme including at least one application surface and/or the at least one shaping unit includes at least one shaping tool including at least one working surface. The application surface and/or the working surface are arranged to cover at least a portion of the outer cylindrical surface of the at least one forme cylinder. A speed of the at least one forme cylinder and a speed of the at least one impression cylinder have a speed ratio with respect to one another.

Abstract: In some examples, a screen printing unit includes a screen printing forme cylinder, an impression cylinder, and a frame including two frame side walls. The screen printing unit further includes first and second base modules, each comprising two stationary base side walls that each have a one-piece design. Each base module includes four installation areas for rotational transport bodies whose positions coincide in the base modules, and the respective first and second installation areas of each base module form a respective selection group of the base module. An impression cylinder cooperating with the screen printing forme cylinder is in one of the installation areas of the selection group of the first base module, and a respective rotational transport body is arranged in each of the four installation areas of the base modules. A functionally different rotational transport body is arranged in an installation area of the first base module.

Abstract: In some examples, a smartphone or tablet includes a device able to generate a digital identifier of a copy that includes at least one print image. The device includes at least one optoelectronic detection device that detects the at least one print image and creates a representation that includes a multiplicity of pixels. The device further includes a unit that evaluates brightness intensities of the pixels, that segments the representation into multiple fields that each are composed of pixels of the representation, and that provides each of these fields with a piece of position information. The unit also ascertains, in each of these fields of adjoining pixels, a difference in their respective brightness intensities, and displays the differences as a frequency distribution. A display device further displays the digital identifier of the respective copy of the relevant printed product in the form of a graphical and/or alphanumerical display.

Abstract: The invention relates to a method for ink control in a printing press, wherein, during an ongoing printing process, an opaque ink (02) is printed onto a print substrate (01) in a first printing unit (06), and subsequently a transparent printing ink (03) is printed onto the opaque ink (02) in a second printing unit (07), at least one actual value of the optical density of the opaque ink (02) being ascertained by a first detection device (08) for this opaque ink (02) printed onto the print substrate (01), a film thickness of this opaque ink (02) to be applied onto the print substrate (01) being set at the relevant printing unit (06) by a control unit (11) detecting the at least one actual value of the optical density of this opaque ink (02), as a function of a previously ascertained value of the optical density of the surface of the unprinted print substrate (01), in such a way that the at least one actual value of the optical density of this opaque ink (02) detected by the first detection device (08) correspon

Abstract: In some examples, a screen printing unit includes a screen printing forme cylinder, an impression cylinder, and at least one further rotational transport body. A fixing element of the impression cylinder includes inner and outer contact surfaces for clamping sheets. The inner contact surface has a base radius as a distance from an axis of rotation of the impression cylinder. A cylinder barrel of the impression cylinder has a supporting surface for sheets that includes an impression portion having a constant barrel radius, which extends over at least 170° about the axis of rotation of the impression cylinder and the barrel radius is larger than the base radius. A fixing element of the further rotational transport body includes an inner and an outer contact surface for clamping sheets. The inner contact surface includes the base radius as a distance from an axis of rotation of the further rotational transport body.

Abstract: Magnetic or magnetizable particles contained in a coating agent can be aligned using a device that includes a cylinder having a plurality of magnetic elements around its outer circumference. The magnetic elements are arranged in a matrix having columns extending in the circumferential direction and rows extending in an axially parallel manner. The magnetic elements in some columns are mounted as a group on a shared carrier element, and have a variable axial position collectively as a group and independently of the magnetic elements of an adjoining column. In these columns, at least one of the magnetic elements is arranged on the carrier element of a multi-piece cylinder body of the cylinder so as to be adjustable in the axial direction, by way of a mechanical adjusting means, and independently of at least one further magnetic element of the same column which is mounted on the same carrier element.

Abstract: In some examples, a pile cutting device includes a first pile positioning unit, a cutting unit for cutting at least one sheet pile, and a bearing device including a first pile bearing surface. The first pile positioning unit includes an upper rotary plunger that can be pivoted about a pivot axis and moved with respect to a vertical direction, and also includes a first horizontal drive for moving a sheet pile in and/or counter to a horizontal direction. The first pile positioning unit further includes two upper pressing elements that differ from the upper rotary plunger, and that are movable with respect to the vertical direction. A first one of the upper pressing elements is movable in and/or counter to the horizontal direction by the first horizontal drive. A second one of the upper pressing elements is movable in and/or counter to the horizontal direction by a second horizontal drive.

Abstract: A blank separating device includes at least one upper blank separating module, the at least one upper blank separating module having a first relief, the first relief comprising at least three separating elements and/or contact elements, each including an operative surface and/or contact surface. The at least three operative surfaces and/or contact surfaces are individually arrangeable to at least three different distances in a vertical direction with respect to a carrier plate within which the at least three separating elements and/or contact elements are mounted. The blank separating device further includes at least one lower blank separating module that has a second relief comprising a plurality of supporting elements. The second relief matches, at least in complimentary vertical positioning, the first relief of the at least one upper blank separating module.

Abstract: In some examples, an ink feed system for providing and feeding printing ink to an inking unit of an intaglio printing unit includes an inking device in the inking unit for inking a first inking unit cylinder. A provision device includes a storage receptacle with an ink reservoir of printing ink that is fed via an outlet and a line to the inking device. Furthermore, a wall of the storage receptacle encompassing the outlet can be heated and/or a metering device may be provided in the line path to support and/or effectuate delivery of the printing ink from the storage receptacle. On an output side, the metering device may provide a mass flow or volume flow that correlates with a working speed of the metering device via a defined relationship, and the metering device may be connected to a control device to control the working speed of the metering device.

Abstract: In some examples, a sheet-fed printing press includes a dryer for drying sheets printed by a non-impact printing device. A cooling unit is directly downstream from the dryer in the transport direction, and includes a cooling module above a conveying plane. The cooling module uses air as a cooling medium, and may include a blower module with blower nozzles that blow the cooling medium onto the surface of the sheets being cooled. The blower module forms, with a guide surface, a gap with respect to the surface of the sheet being cooled. The guide surface of the blower module is arranged at a height above the surface of the sheet being cooled so that the cross-section of an outer annular gap, through the cooling medium exits, is smaller than or almost equal to a sum cross-section across all opening surfaces of the blower nozzles in the guide surface.

Abstract: In some examples, a sheet processing machine includes at least one pile formation device. The at least one pile formation device is arranged in a vertical direction beneath a multiple-up separating mechanism. The at least one pile formation device is arranged so as to be displaceable at least in an inward-moving direction. The at least one pile formation device includes at least one horizontally displaceable pile formation means and a deposit element that can be displaced relative to the at least one pile formation means.

Abstract: A blank separating device includes an upper blank separating module and a lower blank separating module. The lower blank separating module includes at least three supporting elements. Each supporting element includes at least one supporting surface for bracing blanks or scrap pieces. Two of the at least three supporting elements are configured as supporting elements of a lower separating tool. The two supporting elements configured as supporting elements of the lower separating tool are each arrangeable in at least three positions in a vertical direction.

Abstract: In some examples, an intaglio gravure printing press includes at least one gravure printing unit having at least one forme cylinder, at least one impression cylinder, at least one inking unit and/or at least one ink collecting cylinder. Additionally, at least one assigned inking unit, at least one print head, and at least one wiping device are arranged at the at least one forme cylinder. The wiping device is arranged along the direction of rotation of the forme cylinder, and downstream from the print head when the print head is arranged at the at least one forme cylinder. In addition, the wiping device is arranged along the direction of rotation of the forme cylinder, upstream from a contact region of the forme cylinder with the impression cylinder. Alternatively, in some examples, at least one print head is arranged at the at least one impression cylinder.

Abstract: In some examples, a machine for generating optically variable image elements on a substrate includes a printing substrate infeed and a printing unit including a printing mechanism by which a substrate guided on a transport path is printed with a coating agent containing magnetic or magnetizable particles. A device for aligning the magnetic or magnetizable particles includes a first alignment device in the transport path and a further alignment device arranged upstream therefrom. During normal operation, the further alignment device is fixed to a frame at the transport path. The further alignment device includes a plurality of magnets that are spaced apart from one another transversely to the transport direction and, during operation, remain stationary. The number of magnets included in the further alignment device correspond to a number of columns of image-producing print motifs or groups of image-producing print motifs around a circumference of a forme cylinder.