Abstract: Examples include a machine assembly for conveying sheet-format substrates, including a first belt conveyor and a second belt conveyor. These belt conveyors each have a continuously circulating transport belt and are arranged one after another in the transport direction of the substrates conveyed on the respective transport belt. The substrate to be transferred from the first belt conveyor to the second belt conveyor is lifted off the transport belt of the first belt conveyor by means of an air current generated by a lifting nozzle and an opposing air current generated by a counter-nozzle. The substrate to be transferred remains fixed until its transfer by the vacuum pressure generated by a suction chamber of the first belt conveyor. This suction chamber fixing the substrate is arranged close to the lifting region. Examples also relate to a printing machine comprising this machine assembly.

Abstract: A security document includes a substrate having a transparent window formed in the substrate. A micro-optical structure including microlenses is arranged on one side of the substrate. A first print image is arranged on the other side of the substrate, opposite the micro-optical structure, and includes image elements having a dot size or line thickness smaller than a lens width of the microlenses. A layer is arranged on part of the first print image on the side facing away from the micro-optical structure. A second print image is arranged on the layer, facing away from the micro-optical structure, and so that the second print image can be brought into alignment with the micro-optical structure after folding the substrate at a bending line so that the second print image, or at least a piece of information contained therein, becomes visible and/or recognizable when viewed from a direction of the micro-optical structure.

Abstract: Examples include a printing unit having a first tool-dependent printing nip formed by a pair of cooperating rotational bodies. The printing unit includes, along a transport path, downstream from the first tool-dependent printing nip, a first alignment cylinder and a first non-impact printing position to which at least one first print head is assigned. The printing unit further includes, along the transport path, downstream from the first non-impact printing position, a first curing device having a first curing area assigned thereto. The printing unit, downstream from the at least one first alignment cylinder, including at least one second alignment cylinder and a second non-impact printing position, to which a second print head is assigned. The printing unit, downstream from the second non-impact printing position, comprising a second curing device having a second curing area assigned thereto.

Abstract: Examples include a security document having a substrate with a transparent window. In the region of the transparent window, a micro-optical structure including microlenses is arranged on one side of the substrate and a first print image is arranged on the other side of the substrate, opposite the micro-optical structure. A layer covers at least a section of the first print image. The layer allows electromagnetic radiation having a wavelength in the range of 380 nm to 780 nm to pass with a transparency in a range between 10% and 90%. The transparency gradually varies over a planar extension of the layer. A second print image is arranged on the layer in such a way that the second print image, or at least a piece of information contained therein, can be brought into alignment with the micro-optical structure after carrying out a folding process and becomes visible and/or recognizable.

Abstract: A printing machine includes a print head that prints on an article that rotates during printing. A printing width of the print head extends over a section of a length of the article and longitudinally in relation to a longitudinal axis of the article. An orthogonal coordinate system has an origin at a center of mass of the print head, with longitudinal, transverse, and vertical axes. A plurality of the print heads print on the article and are arranged in a row longitudinally in relation to the axis of rotation of the article. The ink ejected by the printing nozzles of the print heads is situated in the same printing plane. The direction of the ink ejected is oriented perpendicularly to the surface of the article. Multiple different printing planes are provided with respect to the surface of the article. Directly adjacent printing planes create a V-shaped formation.

Abstract: A processing machine includes at least one further processing unit following at least one processing unit configured as an application unit in a transport direction of a substrate. At least one transport unit is arranged between the at least one processing unit configured as an application unit and the at least one succeeding processing unit. The at least one transport unit includes a plurality of transport elements arranged one behind the other in the transport direction. The plurality of transport elements are individually axially adjustable, or the plurality of transport elements are groupwise axially adjustable.

Abstract: A processing machine includes at least one processing unit configured as at least one shaping unit following, in a transport direction of a substrate, at least one processing unit configured as at least one application unit. Additionally, at least one transport unit is arranged between the at least one application unit and at least one succeeding processing unit. The at least one transport unit includes a plurality of transport elements that are arranged one behind the other in the transport direction. At least one transport element is axially adjustable based on detection of at least one image-producing element of a substrate by at least one sensor for substrate alignment.

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: 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.