There is described a numbering device (1) for carrying out numbering in sheet-fed or web-fed numbering presses, the numbering device (1) comprising a numbering unit (6) with rotatable numbering wheels (7) carrying alpha-numerical symbols thereon, which numbering wheels (7) are disposed next to each other and rotate about a common rotation axis (17), the numbering device (1) further comprising electro-mechanical actuation means for setting the position of the numbering wheels (7). The electro-mechanical actuation means are entirely located within the numbering device (1) and are mechanically autonomous, the electro-mechanical actuation means comprising a plurality of independent driving means (15, 18-23; 23*) for actuating a corresponding plurality of the numbering wheels.

A method for controlling a printing process is disclosed. The method includes printing a printing material by a printing unit on a basis of data of a prepress stage. A printed result on the printing material is compared with a desired value and a correction value is derived from the comparison. The data of the prepress stage is corrected with the correction value.

A device one of adjusts and changes a dampening medium profile, which extends in the direction of a printing width, in a printing unit comprising at least one printing unit cylinder, at least one inking unit which inks the printing unit cylinder, and at least one dampening unit which interacts with one of the printing unit cylinder and the printing unit. A drying device, which extends over the printing width, is provided with a number I(I ε , 0>1) of drying elements, the influence of which, on a printing unit surface to be treated, allows moisture to be removed from a number of n(n ε , n>1) axial portions a.sub.j(j=1, . . . , n) that are offset relative to one another in the direction of the printing width. One of an extent of the influence of the drying device with respect to the axial direction (a.sub.j) and the operating state of the drying device can be varied independently of one another. The drying elements are designed and arranged in the printing unit such that at least 20% of the width (b.sub.j), when seen in the direction of the printing width, of multiple or all of the axial portions (a.sub.j), which are designed as active portions (a.sub.j) with an active width (b.sub.j) of the drying elements in the printing unit, over the extension of those portions, overlaps with an adjacent axial portion of the axial portions (a.sub.j), which are axially offset relative to one another in the direction of the printing unit. A controller and one of a switching and an adjusting device, which are connected to the controller for signaling purposes, are provided. The controller and the one of the switching and adjusting devices are used to operate multiple or all of the drying elements during a stationary active operating state such that each of the drying elements is pulsed, i.e. is individually clocked between an “off” switching state and an “on” switching state.

A method for mounting one or more printing plate segments on a carrier sheet. The method comprises importing a file into a computer associated with a mounting unit. For each printing plate segment, the file includes a printing plate segment identifier, information regarding alignment of registration marks relative to the carrier sheet; and image data corresponding to a characteristic pattern associated with each printing plate segment. A composite image depicting the image data corresponding to the characteristic patterns is then displayed on a display in the predetermined arrangement of one or more printing plate segment locations and orientations. A mounting unit and a printing system and computer readable media programmed with instructions for performing the method are also described.

A method for printing on an article can include positioning an article in a print bed of a printing device. The fiducial is disposed in the print bed. The method can also include generating an image of the article and the fiducial, locating the fiducial in the image, using the fiducial to establish a point of reference relative to a print location on the article, providing a raster or vector graphic file comprising a graphic, printing a representation of the graphic on the article at the print location, and removing the article from the print bed.

A method for the determination of print parameters of a printing machine, particularly a flexographic printing machine, comprises the following steps: First, a print form (12) is provided and mounted on a print cylinder (14). Then, at least one high-resolution image of the surface of the print form (12) is recorded by means of a 3D camera (18). On the basis of the at least one high-resolution image a height profile of the print form (12) is determined and then a simulated print image is calculated on the basis of the height profile and an initial set of print parameters. Finally, optimized print parameters are determined by checking and/or varying the print parameters of the initial set. For this purpose, a simulated print image is calculated again after the print parameters have been varied. In addition, a test stand is specified on which such a method can be carried out.

An image inspection apparatus for checking an image printed on a recording medium includes: a reference pixel obtaining unit configured to generate a reference image and obtain a first pixel value from the reference image; a print pixel obtaining unit configured to extract an image printed area and obtain a second pixel value from the image; an offset processing unit configured to add a non-image-printed area; and an image checking unit configured to compute a difference between the first image pixel value and the second image pixel value and detect an error when the difference is higher than a predetermined threshold value, wherein the non-image-printed area contains a third pixel value that is different from the first pixel value or the second pixel value, and the image checking unit suspends a determination whether or not there is an error in the image printed area associated with the non-image-printed area.

An image processing apparatus controls an operation of a printer apparatus that prints an image on a sheet being attachable to skin. The image processing apparatus includes: an image acquirer that acquires a skin image; an image analyzer that extracts, from the skin image, a discolored region differing in color from surrounding skin by at least a predetermined level, and color of the surrounding skin; a print type determiner that determines, based on at least one of color and size of the discolored region, a print type that includes at least one of use/nonuse of a base material containing a white pigment, a particle shape of a print material used in the printing, a scheme of the printing, and use/nonuse of lamé powder; and a printing controller that outputs, to the printer apparatus, image data having a content of printing a print material in the surrounding color, on a region corresponding to the discolored region in the sheet, and controls an operation of the printer apparatus according to the determined print type.

Please add the Abstract of the Disclosure, as set forth on the separate accompanying sheet. This Abstract of the Disclosure is essentially the same, in content, as the Abstract which is a part of the published PCT application, WO 2020/187665 A1. No new matter is being presented by the addition of this Abstract of the Disclosure.

A flexographic printing press for printing a substrate web comprises at least one printing unit and at least one central cylinder. A plurality of printing couples are arranged around the periphery of the at least one central cylinder. A horizontally aligned dryer unit, having at least one guide element, is arranged above the printing unit in a vertical direction. The at least one horizontally aligned dryer unit has at least two dryer sections with one dryer section being arranged separated from the next dryer section by at least one diverting assembly. The at least one flexographic printing press has at least one roll unwinder and at least one roll winder. The at least one roll unwinder and the at least one roll winder are arranged on opposite sides of the at least one central cylinder.