Method for setting up and / or operating a flexographic printing unit, and flexographic printing machines

Abstract

The invention relates to a method for setting up and / or operating a flexographic printing unit (01), wherein for finding specifications (ANsoll; ANsoll(Δi); ANsoll(Φ)) for the print-on points, printing forme specific data (DF) relating to a height (h13) of elevations (13) to be printed on the printing forme are used, and / or for the print-on points in the circumferential direction a plurality of specifications (ANsoll; ANsoll(Δi); ANsoll(Φ)) are determined and applied, and / or for setting the circumferential register the printing formes (04.x) fitted on the forme cylinders (03.x) are scanned by sensors (28.x), are checked relative to one another or in relation to a reference position or to a pattern from the preparative printing stage and, if necessary, are rotated, and / or data are copied from a fingerprint to the job description and are used to preset printing machine components or to check the print quality. The present invention also relates to flexographic printing machines, in particular for use in the aforementioned method.

Description

[0001] 2025-10-28

[0002] 1

[0003] Description

[0004] Methods for setting up and / or operating a flexographic printing unit and flexographic printing machines

[0005] The invention relates to methods for setting up and / or operating a flexographic printing unit and a flexographic printing machine according to claims 1, 5, 17 or 25 or 32, 34, 37 or 42.

[0006] WO 2021 / 224384 A1 discloses a method for automatic error management on a printing press in which the pixel-based print image data are transferred from the RIP processing unit to the control unit of the printing press as target print images, actual print images are printed onto a printing substrate using fixed printing forms, the actual print images are captured with a camera, and the actual print images are compared with the target print images from the RIP processing unit.

[0007] DE 102021 125 742 A1 relates to a printing machine with a printing roller and an anilox roller or anilox sleeve for inking a printing form of the printing roller, wherein the anilox roller or anilox sleeve is assigned a machine-readable ID, a sensor or camera is provided which detects the ID, a computer retrieves data which is stored in a digital memory for the detected ID, and the computer finally makes settings on the printing machine based on the read ID or the retrieved data.

[0008] EP 3 822 080 A1 relates to a method for determining the printing parameters of a printing press, in which a height relief of a flexographic printing form intended for subsequent production is measured in a test rig using a 3D camera, and a print image expected under certain printing parameters is simulated and displayed. Parameters can be varied to optimize the printing process. 2025-10-28

[0009] 2. This optimizes the simulated print image.

[0010] DE 102021 125 088 A1, DE 102021 125 060 A1, DE 102021 125 087 A1 and DE 10 2021 125643 A1 relate to methods and devices for operating flexographic printing presses. In these methods, a printing form sleeve intended for an upcoming printing process is first identified in a measuring station using an identifier, e.g., an ID. The sleeve is then subjected to measurements, including the determination of dot density, registration marks, and / or topography, using a camera. The data obtained is evaluated with regard to setting parameters, and these parameters are stored for the specific printing form sleeve in question. In addition to the detailed measurement of dot density in the measuring station, a method of determining the density from prepress data is also mentioned. During press setup, the printing form sleeve mounted on the cylinder is identified using the identifier, and the stored data is transferred to the printing unit or the printing press.The elevation profile, referred to there as topography, is determined in the measuring station using a light curtain that scans the outer circumference perpendicular to the cylinder axis. Using the topography data, the delivery of the so-called "kiss print" is then set; the register is determined based on register mark data; and the contact pressure between the flexographic printing and impression cylinders is set using data on the determined dot density or channels on the printing form or cylinder.

[0011] The invention is based on the objective of creating alternative methods for setting up and / or operating a flexographic printing unit and flexographic printing machines with at least one flexographic printing unit.

[0012] The problem is solved according to the invention by the features of claims 1, 5, 17 or 25 or 32, 34, 37 or 42.

[0013] The invention is essentially aimed at providing a W1-3971 POT for setting up the machine.

[0014] 2025-10-28

[0015] 3. To use existing data and / or machine elements. This eliminates the need for costly auxiliary equipment and / or saves paper waste.

[0016] According to one aspect of the invention, data relating to the flexographic printing form are provided for setting up and / or operating a flexographic printing unit with at least one flexographic printing unit, which comprises at least one printing cylinder carrying a flexographic printing form and forming a printing point with a counter-pressure cylinder in a printing position. Using the provided data relating to the flexographic printing form, a setting for the printing position is then determined, and finally, the flexographic printing unit is operated with this setting for the printing position in at least one operating phase. The physical data relating to the flexographic printing form consists of information from the prepress stage, in particular from the printing form production, regarding the height of printing ridges on the flexographic printing form or a dimension corresponding to this height, and is used to determine the setting for the printing position.Preferably, information from the prepress stage is provided in a RIP data set or, more preferably, originates from the printing plate production process, particularly the plate exposure, regarding the height or the corresponding dimension, and is used to determine the print setting. Such information should also include, for example, values ​​derived computationally from or correlated with this information. Furthermore, such data should include not only a data set with multiple data points but also a single value pertaining to a specific piece of information.Preferably, data relating to the exposure time and / or intensity of an exposure of the flexographic printing form applied or to be applied during its production, or to the intensity and / or duration of a laser treatment of the flexographic printing form, or to a predetermined cutting depth for the flexographic printing form, are used as parameters corresponding to the height of the printing embossing. 2025-10-28.

[0017] 4

[0018] The so-called "prepress" or "pre-press" process typically refers to a series of process steps used to create digital or physical printing plates from digital image data for the printing process being used. This includes, for example, at least the RIP process, e.g., with integrated or, if necessary, separately designed color separation, as well as the imaging of the printing plate(s), e.g., exposure, laser engraving, or engraving.

[0019] A flexographic printing press – particularly suitable for carrying out the aforementioned process – comprises a flexographic printing unit with at least one flexographic printing unit, which has at least one printing cylinder carrying a flexographic printing form. In a printing position, this cylinder forms a printing point with a counter-pressure cylinder, and actuators are provided acting on the end face of the printing cylinder and / or the counter-pressure cylinder. It further comprises a control system that is in signal communication with the actuators and is configured to regulate or control the actuators according to a specification for the printing position – e.g., with regard to a contact force or position – as well as data processing means, which – e.g.,Data relating to the height of printing ridges of the flexographic printing form in question, or to a dimension corresponding to this height, can be supplied via a data or user interface – input data originating from the prepress stage, in particular data contained in a RIP data set, or data originating from the printing form production process, in particular printing form exposure – and which is set up – for example via software implemented in these data processing devices – to determine a specification for the pressure setting of the actuators – e.g. with regard to the force or position to be set – using this height-related data and to forward it to the control system for controlling the actuators.

[0020] This provides a simple option without any additional effort, which is suitable for the

[0021] Setting the angle of attack is an important factor influencing the height of the printing ridges during 2025-10-28

[0022] 5

[0023] The choice of pressure setting must be taken into account. The height of the raised areas significantly influences the printing process and the optimal pressure setting, insofar as the printing form – e.g., with the same compressibility and / or elasticity properties – is harder for lower heights than for higher heights.

[0024] Instead of or in addition to the aforementioned aspect, according to another aspect of the invention, for setting up and / or operating a flexographic printing unit with at least one flexographic printing unit, which comprises at least one printing cylinder carrying a flexographic printing form and forming a printing point with a counter-pressure cylinder in a print-on position, data relating to the print image to be printed by the flexographic printing unit are provided from the prepress stage. Using the provided data relating to the print image, a setting for the print-on position is determined, and finally, the flexographic printing unit is operated with this print-on position setting in at least one operating phase. In doing so, the following are...Using data relating to the print image from the prepress stage, specific requirements or a requirement in the form of a function dependent on the rotation angle for the print setting are determined for a plurality of sections extending circumferentially along the printing length running in the circumferential direction of the printing cylinder, whereby in production operation, during the unwinding of a full printing length on the counter-pressure cylinder, the print setting is successively varied and / or adjusted according to the requirements assigned to the sections or rotation angles.

[0025] A flexographic printing press – particularly suitable for carrying out the latter process – comprises a flexographic printing unit with at least one flexographic printing unit, which has at least one printing cylinder carrying a flexographic printing form and which, in a printing position, forms a printing point with an impression cylinder, wherein actuators acting on the end face of the printing cylinder and / or the impression cylinder are provided. It further comprises a control system, which is described in 2025-10-28

[0026] 6. The actuators are connected to the signal system and are configured to regulate or control the actuators according to a specification for the print position – e.g., with regard to a contact force or position – data processing equipment to which – for example, via a data interface and / or a signal connection to the prepress stage – data relating to the print image to be printed and / or RIP data relating to the color separation can be supplied on the input side, wherein the data processing equipment – ​​e.g., via software implemented in this data processing equipment – ​​is configured to use the data relating to the print image or the color separation from the prepress stage to generate a plurality of sections continuing in the circumferential direction of the printing cylinder, according to specific specifications or a specification in the form of a function dependent on the angle of rotation for the print position, e.g.The system determines the force or position to be set and forwards it to the control unit for controlling the actuators according to the specifications assigned to the sections or angles of rotation. Preferably, the data processing means are also configured to receive, for example, via the data interface or another data interface and / or a signal connection to the prepress department, printing form-related or physical data relating to the flexographic printing form on the input side, in particular information on the height of printing ridges on the flexographic printing form or a dimension corresponding to this height, and to use this data to determine the specified value.

[0027] This provides a way to create improved conditions for pressure profiles that often vary significantly in area density around the circumference. For example, in areas with extremely low area density, the same high pressure is not applied as in areas with high area density, thus minimizing point growth in these areas. Additionally, or alternatively, this method can also counteract oscillation.

[0028] Instead of or in addition to one or more of the above aspects, according to a 2025-10-28

[0029] 7. Further aspect of the invention for setting up and / or operating a flexographic printing unit with several printing units arranged one behind the other in a substrate path, each having a printing cylinder carrying a flexographic printing form with a registration mark, for setting the circumferential register between the printing cylinders, the printing cylinders equipped with the flexographic printing forms are rotated - e.g. one after the other or advantageously simultaneously - and during this time are optically scanned with regard to the pattern of printing elevations by at least one or preferably one sensor over the entire printing form or in at least one axial section in which a registration mark or an image section to be used for assessing the circumferential register is to be expected.The image data obtained by the at least one or respective sensor and the respective image of the entire flexographic printing form or the respective register mark or image section containing the respective register section are then evaluated - in particular by image processing - to determine the position of the image section or register mark to be used for setting the circumferential register in the circumferential direction.The image data evaluated with regard to the position of the image section or the registration mark to be used are then evaluated in a first implementation variant with regard to the relative position between the image sections or registration marks of the involved mold cylinders detected by the at least one or respective sensor and / or with regard to a relative position to a machine phase position, whereby if a deviation is detected in the determined relative position of the registration marks of two mold cylinders from a target relative position, at least one of the mold cylinders involved in the deviation is rotated by an angle of rotation opposite to the deviation and / or if a deviation of a mold cylinder from a target relative position to the machine phase position is detected, the relevant or respective mold cylinder is rotated by an angle of rotation opposite to the deviation.In a second version, the evaluated image data for the respective mold cylinder are assigned to a relative position from the prepress stage for the mold cylinder in question and / or 2025-10-28.

[0030] 8. The affected color separation is evaluated with respect to the print image-related data known and underlying for the production of the flexographic printing form, whereby, if a deviation from a target circumferential position expected for a correct register is detected, the relevant form cylinder is rotated by an angle of rotation opposite to the deviation.

[0031] In a flexographic printing press—particularly suitable for carrying out the latter method—with several printing cylinders, each carrying a flexographic printing plate, wherein each flexographic printing plate bears a registration mark in the form of a raised area or a group of several printing raised areas, an optical sensor is provided for each flexographic printing unit and directed across the entire width of the printing plate or at least in an axial section where a registration mark or an image section used to assess the circumferential register is to be expected, onto the surface of the flexographic printing plate. The sensors are preferably connected at their output to software-based evaluation means that analyze the sensor readings or images or image sections with regard to the relative position of the registration marks of several printing cylinders detected by the sensors or with regard to their relative position to a machine phase position.

[0032] The aforementioned solution makes it possible to determine and establish the correct register position within the machine itself, i.e., without the need for a separate measuring station. Incorrect placements are also immediately detectable, and intermediate steps for identifying the printing form are unnecessary.

[0033] Instead of or in addition to one or more of the above aspects, according to a further aspect of the invention, for setting up and / or operating a flexographic printing machine with at least one flexographic printing unit, which comprises a form cylinder carrying a flexographic printing form, which is in a printing position with 2025-10-28

[0034] 9. A pressure point is formed on a counter-pressure cylinder; the printed image of a printing template for the printed product is subjected to a RIP process; RIP data from the RIP process is used to produce the relevant flexographic printing plate; a digital job description is created and / or stored in the machine control to describe the printed product to be produced and / or the resources to be used for this purpose, in particular machine components; this description contains at least product-specific data as well as information on the machine configuration; the relevant printing plate is positioned on the relevant or each printing cylinder; and after positioning the flexographic printing plate or all flexographic printing plates, printing takes place on the relevant or each printing cylinder. During this process, a so-calledFingerprint data, i.e., data derived from a test print performed on the printing press under specific conditions with a test print different from the relevant or respective flexographic printing plates of the printed product to be printed, for configuring the printing unit and / or for adjusting printing press components, in particular for adjusting flexographic printing units and / or for presetting a printing angle and / or a web tension value and / or for the suitable viscosity and / or temperature of a printing ink to be used, are incorporated into the digital job description and / or imported into it and preferably used as settings when starting up the printing press.Target values ​​are transferred to the machine control and / or color measurement data from fingerprint data are compared with measurement results obtained via color measurement on the printed product and used to assess print quality and / or to identify a quality-reducing malfunction.

[0035] In a flexographic printing machine - particularly suitable for carrying out the latter process - with at least one flexographic printing unit, which includes a form cylinder carrying a flexographic printing form, which is in a printing position with 2025-10-28

[0036] 10 forms a pressure point on a counter-pressure cylinder, and with a machine control having a data storage device in which a digital job description is stored, which contains at least product-specific data as well as information on the configuration of the machine, wherein the job description contains data and / or color measurement data from a color measurement carried out on the fingerprint, i.e. a print carried out on the printing press under specific conditions with a test printing form different from the relevant or respective flexographic printing forms of the printed product to be printed.

[0037] By recording and using fingerprint data, suitable settings for the substrate and ink to be printed can be made without lengthy and wasteful printing processes, and quality checks can be carried out on the product without the prior printing of reference product samples.

[0038] The aspects and solutions outlined above can each be applied individually or together to enable a setup of the flexographic printing press with minimal waste.

[0039] Further details of the execution, as well as variants and combinations for the above-mentioned designs and further training, can be found in the requirements and the following description.

[0040] Exemplary embodiments of the invention are shown in the drawings and are described in more detail below.

[0041] They show:

[0042] Fig. 1 a schematic representation of a printing unit with a flexographic printing unit; 2025-10-28

[0043] 11

[0044] Fig. 2 shows a schematic representation of a flexographic printing unit with an adjusting device for setting the printing pressure;

[0045] Fig. 3 shows a schematic representation of a flexographic printing form with an enlarged section of the cross-section and of the surface;

[0046] Fig. 4 shows a schematic representation of a file containing print image-related and print form-related data;

[0047] Fig. 5 shows a schematic side view of a printing unit with several, here six, flexographic printing units;

[0048] Fig. 6 shows a top view of a printing form shown only schematically, with a printing area relating to the printed image and lateral registration marks;

[0049] Fig. 7 shows a process flow diagram for setting up and operating a printing unit in a version with determination and specification of a printing position based on RIP and printing form data;

[0050] Fig. 8 shows a process flow diagram for setting up and operating a printing unit in a version with register setting via a printing form scan, as well as with the creation of a digital job description and a quality check using fingerprint data;

[0051] Fig. 9 shows a schematic representation of a file containing fingerprint data.

[0052] A printing press comprises at least one printing unit 01, e.g., flexographic printing unit 01, with at least one printing unit 02; 02.x (with x = 1, 2, 3, ... n; ne N), e.g., W1-3971 POT

[0053] 2025-10-28

[0054] 12

[0055] Flexographic printing unit 02; 02.x. The printing unit 02; 02.x comprises a printing cylinder 03; 03.x, in particular a form cylinder 03; 03.x, which carries a printing form 04; 04.x, in particular a flexographic printing form 04; 04.x, in the region of its circumference. The flexographic printing form 04; 04.x can be inked by an inking unit 06; 06.x. Downstream of the ink transport path, the form cylinder 03; 03.x forms a printing gap 08; 08.x with an impression cylinder 07. In the case of multicolor printing, the impression cylinder 07 can act as a central cylinder 07, interacting with several form cylinders 03.x around its circumference. In production, substrate S, guided and / or conveyed through the printing gap 08; 08.x, is printed in one or more colors using the flexographic printing process. The substrate S, e.g. B. a printing material S made of plastic, paper, cardboard, carton, metal or a multi-layered combination of one or more of the aforementioned materials, is, for example, formed in sheet or preferably web form. The forming cylinder 03; 03.The x and the counter-pressure cylinder 07 are each positively driven, but preferably their relative angular position relative to each other is variable. In the case of a mechanical drive coupling, this can be achieved via a gearbox that is variable with respect to the relative angular position. Preferably, however, the forming cylinder 03; 03.x is rotaryally driven by a drive 09; 09.x, in particular a drive motor 09; 09, x, which is mechanically independent of the drive of the counter-pressure cylinder 07.

[0056] The inking unit 06; 06.x can, in principle, be configured in any way. For example, it can have an application roller 11 that inks the printing cylinder 03; 03.x and is inked from an inkbox via a dipping or ink-filling roller—and optionally via one or more additional rollers. Preferably, however, the inking unit 06; 06.x is configured as a short inking unit 06; 06.x and has an anilox roller 11 that interacts with the printing form 04; 04.x to ink it. This anilox roller is inked, or can be inked, by a doctor blade assembly 12, in particular a chambered doctor blade 12. The anilox roller 11 comprises cells on its circumference that are filled with printing ink by the chambered doctor blade 12. 2025-10-28

[0057] 13

[0058] In an advantageous embodiment, the flexographic printing unit 01 has a plurality n, e.g., four, five, or even six printing units 02.x, wherein the substrate S can be printed successively, e.g., with printing ink of different colors, by means of the printing units 02.x. For example, n printing units 02.x are provided for printing n color separations, wherein, e.g., a correspondingly designed printing form 04.x is assigned to a color separation x in the printing unit 02.x.

[0059] The printing form 04; 04x of the single or respective printing unit 02; 02.x can, in principle, be formed directly by the appropriately machined outer surface of the printing cylinder 03; 03.x. Preferably, however, it is formed by a printing form 04; 04x that can be detachably attached to the outer surface of the printing cylinder 03; 03.x, either as a closed printing form sleeve or as a printing plate that can be attached to the outer surface, e.g., by means of adhesives or corresponding holding mechanisms. In the following, unless explicitly stated otherwise, no distinction will be made between the printing form 04; 04.x being designed as a printing plate or a printing form sleeve.

[0060] The flexographic printing form 04; 04.x in question has raised printing elements 13 as printing areas, which can, in principle, be raised dots or extended areas 13 representing image parts. Preferably, however, these are designed as individual, e.g., dot-shaped printing points 13, which are obtained in a known manner in the prepress stage from an image file provided by the customer, e.g., in PDF format, via a rasterization process, e.g., a so-called hardware- or software-based RIP process, and are accordingly formed on the surface of the printing form 04; 04.x during its production. The respective tonal value can be amplitude- or frequency-modulated. The pattern of the raised printing points 13 on the flexographic printing form 04; 04.x.x can be formed, according to the previously generated RIP data, in a known manner by mechanical engraving, by laser engraving, or preferably by exposure and washing of a polymer layer. In the case of multicolor printing, the W1-3971 POT is used.

[0061] 2025-10-28

[0062] 14

[0063] Rasterization involves separating the customer-provided image file into so-called color separations x, i.e., breaking down the customer-provided print image into partial images of the colors available in the printing press, e.g., at least cyan, magenta, yellow, black, and possibly a spot or special color. Prepress, also known as pre-press, typically refers to a number of process steps to create digital or physical printing plates for the printing process from digital image data. Here, it includes, for example, at least the RIP process, e.g., with integrated or possibly separately provided separation of the color separations x, as well as the imaging, e.g., exposure, laser engraving, or engraving, of the flexographic printing plates 04; 04.x.

[0064] The image data originating from prepress, specifically the RIP process (also known as "ripping"), and separated and rasterized for each color (e.g., RIP data), are stored in a common dataset or in separate datasets, e.g., in individual PDF files. Each dataset contains information about the distribution of the raised areas 13, in particular printing dots 13, to be formed according to the halftone dots during the production of the respective printing form 04; 04.x. This results in complete information about the texture or topography found on the respective printing form 04; 04.x. In addition to or instead of the area distribution and / or positioning of the raised areas 13 from prepress, particularly from the RIP process or printing form production, information about the height h13 or a dimension corresponding to the height h13 may be known and, for example,This information may be included in the RIP data set or be transmitted or can be transmitted from the printing plate production process. Preferably, however, this information regarding the height h13 or the corresponding dimension originates from the printing plate imaging process. The dimension used for the height h13 can vary depending on the production method. For example, this can occur in the case of exposure and subsequent washing out of a layer 14, in particular a polymer layer 14, with a specific thickness d14, for example, W1-3971 POT.

[0065] 2025-10-28

[0066] 15. The exposure time and / or intensity – especially of back-side exposure – could be the parameter. In the case of laser engraving, for example, the intensity and / or duration of the laser or possibly even a predetermined cutting depth itself. In the case of back-side exposure, there is, for example, an inverse, also described as negative, correlation between exposure time and height h13, i.e., with increasing exposure time, a decreasing height h13.

[0067] In the preferred case that the printing form 04; 04.x, or at least its printing-effective layer 14, is formed by exposure to a polymer, it comprises, for example, a base layer 16 formed by cured polymer of a thickness d16 determined by the manufacturing process, also referred to as the "floor" or "bed," on which the raised areas 13 with a height h13 protrude. The base layer 16 itself can be applied to a solid, preferably UV-transmitting, support layer 17 of a thickness d17, also referred to as the base. During manufacturing, the still raw, i.e., unprocessed, printing form 04; 04.x is exposed from the back side—for example, through the optionally provided support layer 17—and thus cured to a depth corresponding to the thickness d16 of the base layer 16. From the front side, or future outer side, exposure occurs via a mask covering the future recesses 18 between the raised areas 13—e.g.,The polymer layer 14 is exposed to UV light, thereby hardening it, and then the unhardened areas are washed away. This leaves the pattern of raised areas 13, responsible for ink transfer and with a corresponding height h13, on the front or outside of the printing form 04; 04.x, as required for the corresponding ink separation x. A uniform height h13 or engraving depth across the effective printing form area, or possibly a varying engraving depth, can be provided and specified accordingly.

[0068] In flexographic printing, the quality of the impression of a raised area 13, especially in the edge area of ​​the respective raised areas 13, depends, among other things, on the optimal pressure, i.e., on the effective setting force in the printing position, with which the previously W1 -3971 POT

[0069] 2025-10-28

[0070] The 16 colored protrusions 13 press against the substrate S, which is supported by the counter-pressure cylinder 07, as they pass through the printing gap 08; 08.x. This optimal pressure can vary depending on the materials used for the printing form 04; 04.x and / or the properties of the substrate S to be printed. The pressure exerted on the substrate S by the protrusions 13 in the printing unit 02; 02.x depends significantly on the one hand on the magnitude of the angled force by which the printing cylinder 03; 03.x is positioned against the counter-pressure cylinder 07, and on the other hand on the effective support surface as the printing cylinder 03; 03.x passes through the printing gap 08; 08.x, on which the printing cylinder 03; 03.x is supported against the counter-pressure cylinder 07 via the substrate S. The latter is effective over the entire effective width, i.e., the width of the outermost protrusions 13 of the printing form 04; 04.x considers the sum of the values ​​simultaneously in print column 08; 08.x raised areas 13 on the substrate S or – in the case of more extensive raised areas 13 – their attached partial surfaces. In the case of raised areas 13 formed by pressure points 13 from the grid, it can be assumed, for example, due to the small size and the width of the pressure strip resulting from the elastic and / or compressible deformation, that each pressure point 13 has full contact.

[0071] From these considerations, uneven or fluctuating area density distributions in the circumferential direction of the printing form 04; 04.x and / or in width in the partial image or color separation x to be printed in the printing gap 08; 08.x would result in total support areas varying in the circumferential and / or axial direction, determined by the varying density of the protrusions 13, with the consequence of an optimal contact force varying in the circumferential and / or possibly axial direction. However, this requirement cannot be met even in the conventional operation of such printing units 02; 02.x, in which an optimized contact force – for example, empirically by examining printed control sheets – is found as a compromise and maintained over the printing width b21 and length 121 of a printing area 21. Such procedures, however, require individual experience and are costly. 2025-10-28

[0072] 17 On the other hand, possibly a significant amount of waste paper.

[0073] With regard to one aspect of the invention, the invention now focuses on using data DB relating to and / or describing the print image, particularly with regard to the topography of the printing form surface, as well as known printing form-related or physical data DF relating to the flexographic printing form 04; 04.x, which are already known from the prepress stage and relate to the print image or corresponding color separation x, and also to the flexographic printing form 04; 04.x, which relate to the shape and / or properties of the printing form, for a determination – particularly with software support – of a suitable setting AN relating to the adjustment of the print position. S0 to use H and then print the work 02; 02.x - at least for the time being - with one of these specifications AN S0 H corresponding pressure setting, e.g. a specification AN representing a desired setting force and / or correlated with such a setting S0 H, to operate. The requirement AN S0H, or the setting for "pressure application," refers here to a dimension that defines or effects the strength of the pressure application, for example, a dimension directly representing the application force, such as printing medium pressure, or a dimension relating to the application position, such as a target position or a travel distance. Such print image-relevant and / or printing form-relevant data (DB; DF) are provided, in particular, in a data format accessible to data processing, e.g., in a separate or shared file, from the sources described in more detail below.

[0074] The basis for this determination is, for example, the data set or file that is created during rasterization and, if applicable, preceding or concurrent separation for the production of printing plates 04; 04.x, i.e., the RIP data originating from the RIP (Raster Imaging Process) (see also Fig. 7). This data is contained, for example, in a single PDF file or in separate PDF files for each of the separated colors, i.e., for each color separation x. The relevant data DB relating to the printed image is therefore preferably obtained and / or extracted from the RIP data created for the printed image in prepress. In addition to the 2025-10-28

[0075] In addition to the 18 known physical data DF for the flexographic printing form 04; 04.x, data on any adhesive 19 and / or the substrate S used may be added.

[0076] Specifically, the data DB relating to the printed image, and in particular to the topography of the printing form surface and / or descriptive data, can preferably include at least one quantity representing an area coverage and / or dot density and / or a quantity representing a dot size or dot size distribution and / or, in an advantageous embodiment, information relating to a progression, e.g., mapping, of the area coverage in the axial and / or circumferential direction and / or, in an advantageous further development, information representing an image position on the printing form 04; 04.x, and be provided for determining the specification AN. S0H is used for the print setting. Additional information may be provided regarding any different uses Nj or designs and their position on the same printing form 04; 04.x or in the same printing area 21. The target quantity with its corresponding unit can serve as the quantity or information representing the relevant data DB, or a measured quantity that is strictly correlated with this target quantity and therefore expresses it unambiguously. In multicolor printing, information identifying the relevant color separation x and / or printing cylinder 03.x is preferably also included.

[0077] The physical data DF for the flexographic printing form 04; 04.x can be a quantity representing the height h13 of the raised printing elements 13 and / or a quantity representing the compressibility K and / or elasticity E of the printing form 04; 04.x, e.g., in the area of ​​the raised printing elements 13, and / or a thickness d04; d04.x, in particular the total thickness d04; d04.x of the printing form 04; 04.x in the area of ​​the raised printing elements 13, and / or a thickness and / or a compressibility K and / or elasticity E of an adhesive 19 that may be provided, e.g., an adhesive film 19 provided between the cylinder shell and the printing form 04; 04.x, and / or a thickness d16 and / or a compressibility K and / or elasticity E of a bottom layer 16 that may be provided, and / or a thickness W1 -3971 POT

[0078] 2025-10-28

[0079] 19 d17 of a possibly provided carrier layer 17 the specification is forwarded to the data processing means 26 and used to determine the specification for the printing position ANsoii. One or more data DF relating to the printing form 04; 04.x, e.g. the height h13 of the elevations 13, also referred to as point height h13, derived from the RIP data or exposure times or engraving depths, can also originate from information in the RIP file or from the RIP data, or process data from the imaging, e.g. an exposure time or engraving depth, which underlies the printing form imaging, the so-called imaging.

[0080] In a first advantageous embodiment, because it is, for example, less complex, a specification AN is created using one or more of the above-mentioned data DB relating to the printed image of a flexographic printing form 04; 04.x or a color separation x, and using data DF relating to the printing form 04; 04.x. S0H is determined for the pressure setting, which is then to be valid and set for at least the duration of the rolling of a full print length 121 on the counter-pressure cylinder 07. For this purpose, data DB relating to the print image or the topography in the entire print area 21 are used, for example, to determine a pressure setting to be specified for the entire print area 21. Such a value represents a compromise for the entire print area 21, even if it may not optimally suit individual sub-areas. Accordingly, this setting is AN. S0H is set for the pressure setting in production operation and remains in place for at least the entire duration of a roll-out of the full printing length 121 on the counter-pressure cylinder 07, in particular for an entire operating phase over a large number of revolutions of the form cylinder 03; 03.x continuously until further notice, i.e. for example until the end of production or if necessary until a correction is required.

[0081] Based on the printed image of the considered color separation x or the considered printing form 04; 04.x and the data DB; DF relating to the printing form 04; 04.x, an optimal or at least suitable specification AN is thus determined. S0 H for the pressure-on position, W1-3971 POT

[0082] 2025-10-28

[0083] 20. In particular, an optimal or at least suitable actuation force or position between form cylinder 03; 03.x and impression cylinder 07 was found and set for printing operation. This actuation force or position can vary depending on the print image or color separation x and can be corrected if necessary.

[0084] In contrast to the aforementioned “static” print setting, a second, albeit more complex, but ultimately advantageous version, resulting in, for example, more precise print quality, uses data DB relating to the print image and the printing form 04; 04.x;

[0085] DF for a plurality of circumferentially continuing sections Ai of print length 121 using the data DB relating to the respective section Ai; DF respective specifications AN SOii(Ai) is determined for the pressure setting. During the unwinding of a full print length 121 on the counter-pressure cylinder 07 in production operation, the pressure setting is then successively adjusted according to the specifications AN assigned to sections Ai. SO ii(Ai) varies and / or is discontinued.

[0086] Thus, in this version, for example, the pressure setting is dynamically adjusted during the printing process as the printing area 21 progresses through the printing gap 08; 08.x according to the varying specifications AN. SO ii(Ai) controlled or regulated. In the case of infinitesimally small segments Ai, the specification can take the form of a rotation angle. <D abhängigen Funktion AN S0 n( <t>) assume.

[0087] During production, for example, the pressure setting is gradually adjusted according to the respective specifications. SO ii(Ai) synchronized with the rotation of the form cylinder 03; 03.x carrying the flexographic printing form 04; 04.x, such that at the time of passage of a respective section of the printing length 121 through the printing point 08; 08.x, the specification AN assigned to the section (Ai) in question SO ii(Ai) for the print-on setting is or will be implemented. 2025-10-28

[0088] 21

[0089] In a further development of the first or second version, pressure can be applied to both end faces of the form cylinder 03; 03.x at different intensities. This can be advantageous, for example, if one side of the printing form 04; 04.x has a significantly larger support area, i.e., a higher surface coverage, than the other side. For this purpose, respective specifications ANsoiu; ANsoii,2; AN are applied section by section across the axially extending printing width b21, using data DB relating to the printed image and DF relating to the printing form 04; 04.x. SO ii,i(Ai); AN S0 The pressure setting n,2(Ai) on the two end faces of the mold cylinder 03; 03.x was determined and adjusted accordingly during production. The principle of different pressure settings on both sides can be applied to both static and dynamic cases.

[0090] Over an axially extending print width b21, respective specifications AN are thus defined, for example, section by section for two sections using data DB relating to the print image and using data DF relating to the flexographic printing form 04; 04.x. S0 H,I ; AN S0 H,2; AN SO ii,i(Ai); AN S0 n,2(Ai) for the pressure setting on the two end faces of the mold cylinder 03; 03.x determined and adjusted accordingly during production operation.

[0091] The requirements for determining the relevant specifications are set out by AN S0 H; AN S0 H (Ai); AN S0 n,i; AN S0 H,2; AN SO ii,i(Ai); AN S The print image-related and printing form-related data DB; DF used in the above explanations are preferably collected and provided as structured data DB; DF in a data record 22, e.g., a file 22. This is referred to here, for example, as FPTDF ("Flexo Plate Topography Description File"). It can be provided on a stationary or mobile data carrier. The data DB; DF can be structured, for example, using XML.

[0092] The evaluation of the data DF; DB describing or relating to the printing form 04; 04.x and the printed image or its topology on the printing form 04; 04.x and determination W1 -3971 POT

[0093] 2025-10-28

[0094] 22 of the corresponding provision AN S0 H is carried out in particular by software-supported means by appropriately configured data processing equipment 26, to which the aforementioned data DF, DB, ZB are supplied individually, in groups, or preferably together in a file 22, on the input side – e.g., via a data or user interface and / or a signal connection to the prepress stage. This data DF, DB is processed – for example, as schematically indicated in Fig. 2 – by the data processing equipment 26 via several or multidimensional relationships between the relevant DF, DB, and optimal specifications AN. S0 H for the pressure setting is evaluated according to strict rules, via fuzzy criteria or via AI-based algorithms and / or - depending on the implementation - a static or dynamic specification AN S0 H; AN SO ii(Ai) for the pressure setting is determined or derived. The evaluation and derivation or determination according to such rules, criteria and / or algorithms can be carried out by software included in or implemented in the data processing equipment 26. The static or dynamic setting AN determined or derived from the data DF; DB in this way S0 H; AN SO ii(Ai) is then used to control or regulate the pressure-on position. This can be done, for example, by setting the ON position. S0 H; AN SO ii(Ai) is fed to a control unit 23 controlling the machine or at least the printing unit 02; 02.x, e.g. machine control unit 23, and this control unit 23 is used to implement the specification AN S0 H; AN SO ii(Ai) corresponding control commands are sent to the drive means 24, e.g., actuators 24, which effect the pressure application. The machine control 23 can be understood here as a central control device or as a distributed system of control devices relating to the control of the machine, preferably interconnected via signals. The data processing means 26 can be separate from the machine control 23 and only connected to it via signals, or they can be implemented as part of the machine control 23 within it.

[0095] The actuators 24, which act on both end faces of the forming cylinder 03; 03.x, can in principle be designed in any way, provided that they are compatible with respect to a position or W1 -3971 POT

[0096] 2025-10-28

[0097] 23. A force-defined positioning of the form cylinder 03; 03.x is permitted. As explained above, the ultimate target value for applying the pressure is the pressure with which the printing form 04; 04.x, or the projections 13 encompassed by it, is applied to the substrate S supported by the counter-pressure cylinder 07.

[0098] This can be achieved, for example, by making the actuators 24 force-based or force-operable, i.e., adjustable with a defined force as the target variable. In this case, AN can be used as a specification. S0 H; AN SO ii(Ai) a force to be applied by the drive means 24 or a quantity representing such a force, e.g. a torque to be applied or a pressure to be exerted, is specified directly. Such a force-based drive means 24 can, for example, be a cylinder-piston system operable with pressure media of defined pressure or an electric motor, in particular a servo motor, which is controllable or regulated with respect to the torque.

[0099] In an alternative, and for example preferred here, configuration, the actuators 24 are operated or can be operated in a position- or displacement-based manner, i.e., with a target position or a defined displacement as the target variable. In this case, the controller 23 and / or the actuators 24 can be given the input AN as a preset. S0 H; AN SO ii(Ai) A target position to be achieved by the actuator 24, or a displacement, or a quantity representing such a target position or displacement, e.g., a motor position to be achieved or a motor feed to be traveled, is specified. The pressure-position thus achieved requires a specific actuation force, which correlates with the degree of pressure-position such that a higher actuation force and thus a higher pressure results when the mold cylinder 03; 03.x is positioned further towards the counter-pressure cylinder 07 than when the mold cylinder 03; 03.x is positioned less towards the counter-pressure cylinder 07. The specification AN S0 H; AN SO ii(Ai) can then, for example, with known physical data DF for the printing form 04; 04.x and data DB relating to the printed image, directly determine and output a target position or a path, or indirectly via the data DB; DF of physically or empirically derived relationships. 2025-10-28

[0100] 24 between a specific positioning position and a resulting positioning force for the specific printing form 04; 04.x, initially as a specification AN S0 H; AN SO ii(Ai) a desired actuating force and from this the required target position or the required travel distance are determined and output. Such a position- or distance-based drive element 24 can be, for example, a linear motor or an electric motor 24 driving a spindle drive, e.g., a position- or position-controlled servo motor.

[0101] Especially for the second above-mentioned design variant, namely a dynamic variation of the pressure setting during the rolling of the printing area 21, it is of great importance, for example, that the pressure setting is successively adjusted during production operation in accordance with the respective specifications AN. SO ii(Ai) is synchronized with the rotation of the form cylinder 03; 03.x carrying the flexographic printing form 04; 04.x in such a way that at the time of passage of a respective section of the printing length 121 through the printing point 08; 08.x the specification ANsoii(Ai) for the printing position assigned to the relevant section Ai is or is implemented.

[0102] However, in order to ensure that the required specification AN is available at all times for the relevant section or perimeter position of print area 21 SO In order to be able to act on ii(Ai), the control unit 23, which among other things initiates the application of pressure, must know or at least be accessible the position of the pressure area 21 in the direction of travel at every stage of operation.

[0103] This is made possible, for example, by the fact that in a control 23 controlling the printing press or at least the printing unit 02; 02.x, e.g. machine control 23, the exact angular position of the drive 09; 09.x driving the relevant or respective form cylinder 03; 03.x is always known.

[0104] The information about the respective phase position of pressure area 21 is dated 2025-10-28

[0105] 25 is strictly coupled to the position of the drive 09; 09.x, which drives the form cylinder 03; 03.x, e.g., the aforementioned drive motor 09; 09.x. If the position of the printing area 21 or the printing form 04; 04.x on the form cylinder 03; 03.x is predetermined and always the same, a phase position of the drive 09; 09.x already exists that corresponds to a defined zero position of the printing area 21 or the printing form 04; 04.x. If this is not the case, a corresponding relationship between a zero position for the rotational angular position of the printing area 21 or the printing form 04; 04.x and the phase position of the drive 09; 09.x can be established, e.g., in the conventional manner, by means of corresponding markings on the printing form 04; 04.x and a - manual or automated - rotation of the form cylinder 03; 03.x towards the desired zero position, whereby the position then assumed by the drive 09; 09.x corresponds to the zero position.

[0106] Beyond knowing the respective zero position, in the case of multicolor printing, the partial print images relating to the color separations x must be printed on top of each other in the correct register, i.e., the printing forms 04; 04.x or printing areas 21 must be in the correct circumferential register relative to each other. This can be done, for example, in a conventional manner by providing a raised reference mark 27; 27.x on the printing forms 04; 04.x together with the raised area 13 relating to the print image of the respective color separation x, by printing this respective reference mark 27; 27.x onto the substrate S when setting up the machine, by checking the printed reference marks 27; 27.x for a target relative position, and in the event of a deviation, by rotating the form cylinders 03; 03.x relative to each other so that the target relative position between the reference marks 27; 27.x is achieved. The reference mark 27; 27.x can lie outside the print area 21 relating to the printed image, but also within a defined cell in an area relating to the printed image. The target relative position can be defined such that the printed images of the reference marks 27; 27.x are aligned or such that they are positioned in a defined pattern and distance from each other. For example, a register mark 27; 27.x, e.g., 2025-10-28, is used as a reference mark 27; 27.x.

[0107] 26

[0108] Passing cross 27; 27.x used.

[0109] In summary, for the production of a printed product, the print image received from the customer is processed into RIP data, for example in a RIP process. Using this RIP data, the printing form(s) 04; 04.x are manufactured and mounted on the printing cylinder(s) 03; 03.x. In parallel, data relating to and / or describing the print image (DB) are collected from the RIP process, and data relating to the printing form 04; 04.x (DF ZB) are collected from the printing form manufacturing process and / or from printing form data known to the manufacturing process. Using this data (DB; DF), a suitable static or dynamic specification (AN) is then created. S0 H; AN SO ii(Ai) is determined for the print-on setting. In multicolor printing, this determination is made for each color separation x, whereby the respective setting AN is then assigned. S0 H; AN SO ii(Ai) to the relevant printing unit 02.x. When the machine is started up for production or during prior setup, the actuators 24 are set to the corresponding static or dynamic value AN. S0 H; AN SO ii(Ai) is applied and operated in this manner during operation, e.g., of a production plant or during start-up, until further notice. In dynamic operation, the pressure setting is adjusted inline according to the AN specification. SO ii(Ai) regulated. Before or at the start of production, the scope register is preferably checked and / or adjusted in the conventional manner or preferably in the manner described below.

[0110] The conventional procedure described above for finding and setting the zero position and / or the correct register by means of reference marks 27; 27.x printed on substrate S has, for example, the disadvantage that this requires actual printing on the substrate S, which results in a certain amount of waste paper.

[0111] According to a particularly advantageous embodiment for setting up and / or operating a printing unit 01 or printing press - without or advantageously with the integration of the W1-3971 POT

[0112] 2025-10-28

[0113] 27. In the process for determining and setting a suitable printing position, the check and / or adjustment of the register is not carried out using the above process with the printing and - manually or software-based - measurement of register marks 27; 27.x, but - without the need for waste paper - as described below by optical detection of the rotational angular position of the printing area 21 or the printing form 04; 04.x on the form cylinder 03; 03.x and a subsequent adjustment of these rotational angular positions relative to each other or to a defined reference phase position of the machine drive to produce a correct circumferential register.

[0114] To check and, if necessary, subsequently adjust the register and / or to locate the zero position, the form cylinder 03; 03.x with the printing form 04; 04.x arranged on it is rotated and optically scanned by a sensor 28; 28.x over at least the entire width of the printing form or in at least one axial section Aa, in which the reference mark 27; 27.x is expected. Simultaneously, for each angular position, the phase position of the drive 09; 09.x driving the form cylinder 03; 03.x, e.g., the aforementioned drive motor 09; 09.x, is known or is determined by sensors. The optical sensor 28; 28.x can be designed as a camera 28; 28.x, e.g., an area scan camera or, in particular, a line scan camera, or as a scanner 28; 28.x, in particular a 3D and / or line scanner. He is specifically trained to detect differences in height and / or to recognize a 3-dimensional structure, or at least to evaluate the captured signal for such a structure.Such a scan can generate a data matrix in which the surveys 13 are identified, for example, by X / Y coordinates.

[0115] With reference to a forming cylinder 03; 03.x, the relative phase position between the printed image and the machine phase position can be determined based on the reference mark 27; 27.x recorded for a specific rotational angular position of the forming cylinder 03; 03.x or of the drive 09; 09.x driving the forming cylinder 03; 03.x, and the above zero position 2025-10-28

[0116] 28 and / or the circumferential register relative to the machine phase position can be determined, and if necessary, the forming cylinder 03; 03.x or the printed image can be rotated into a desired position. The machine phase position is, for example, the phase position of the components conveying and / or processing the substrate, relative to the progression of a printed image length, which is reflected, for example, in a so-called electronic guide axis. The adjustment of the circumferential register, i.e., the correct rotational angular position of a respective or relevant forming cylinder 03; 03.x, can, for example, be relative to a machine phase position, e.g., to a target relative position to a defined reference angular position of the machine.

[0117] Regarding the register between the printing units 02; 02.x involved in the printing process, or the printing cylinders 03; 03.x carrying the printing forms 04; 04.x, the image data determined by the respective sensors 28; 28.x and containing the reference marks 27; 27.x are superimposed – for example, after or during which one of the printing cylinders 03; 03.x has been or is being aligned as a “master” to the machine phase position – taking into account the substrate path lengths between the printing columns 08; 08.x, and evaluated with respect to the relative position of the reference marks 27; 27.x. In the event of circumferential deviations from a target relative position, the affected printing cylinders 03; 03.x are adjusted via their drives 09; 09.x, in particular drive motors 09; 09.x, is brought into the correct relative angular position by rotating at least one of the form cylinders 03; 03.x involved in the deviation by an angle of rotation opposite to the deviation, in particular eliminating the deviation.The evaluation and / or the twisting can be done manually, but is preferably done automatically and e.g. software-supported.

[0118] For this purpose, the sensors 28; 28.x are connected on the output side to software-supported evaluation means 31 which evaluate the recordings of the sensors 28; 28.x with regard to a relative position of register marks 27; 27.x recorded by the sensors 28; 28.x, wherein preferably each form cylinder 03; 03.x has its own 2025-10-28

[0119] 29

[0120] drive motor 09; 09.x, whose drive controller is in signal connection to control and / or regulation means of a register control 29, which on the input side - e.g. via a data or user interface - is in signal connection to the evaluation means 31.

[0121] As an alternative to the specifically provided reference marks 27; 27.x, image data of each form cylinder 03; 03.x, acquired by the respective sensors 28; 28.x in the printing area 21 of the image to be printed, could also be used as reference marks 27; 27.x in a figurative sense and compared with a target relative position in the manner described above. However, since these are color separations x with potentially different reference point positions, an advantageous embodiment additionally transmits and uses information on the target relative position of the image data to be evaluated as reference marks 27; 27.x from the RIP data of the color separations x.

[0122] In an advantageous further development, instead of sections Aa containing the reference marks 27; 27.x, or additionally, the entire or a part of the printing area 21 relating to the entire printed image is detected by the sensor 28; 28.x (indicated, for example, by dashed lines in Fig. 6), and the detected elevations 13 are compared in a matrix-like manner with the pattern of elevations 13 to be provided during the printing plate production for the area of ​​the affected color separation x known from the RIP data. By means of this comparison, it can be checked and determined whether the correct printing plate 04; 04.x is on the affected printing cylinder 03; 03.x and / or whether the printing plate 04; 04.x is applied correctly. The RIP data required for this can, for example, be transferred to storage media provided in the machine control system as part of a so-called job creation process.During job creation, information about the print job to be processed by the printing press is compiled, e.g., the quantity and dimensions of the product, the printing units to be used (02; 02.x), and, if applicable, the product design. 2025-10-28.

[0123] 30

[0124] As an alternative to comparing the target relative positions between the target relative positions of the printing cylinders 03; 03.x, the respective printing form 04; 04.x can also be aligned in the correct circumferential position relative to the machine by evaluating the image data obtained by the respective sensors 28; 28.x and containing the respective image of the entire printing form 04; 04.x or at least the respective reference mark 27; 27.x with respect to a relative position to image data known from the prepress stage, in particular the aforementioned RIP data, for the respective printing cylinder 03; 03.x and underlying the flexographic printing form 04; 04.x, and if a deviation from a target circumferential position expected for a correct register is detected, the respective printing cylinder 03; 03.x is rotated by an angle of rotation opposite to the deviation.

[0125] Here, the image data of the individual color separations x, derived from the RIP data and e.g., as PDF files, are sent to evaluation units 31 and assigned there to the respective printing unit 02; 02.x. For the image captured by the respective sensor 28; 28.x in the aforementioned manner for each printing unit 02; 02.x, a digital image, e.g., matrix-like in X / Y coordinates, is created, and the resulting image is compared with the image data from the RIP data set. If a positional deviation from the target is detected—e.g., for a zero position of the form cylinder 04; 04.x—the corresponding drive motor 09; 09.x counteracts the deviation.

[0126] To locate and zero the relevant or respective form cylinder 03; 03.x, the position of the respective reference mark 27; 27.x can also be compared with a position expected from the RIP data.

[0127] According to another advantageous embodiment for setting up and / or operating a printing unit 01 or printing press - without or preferably with the inclusion of the above process for determining and setting a suitable printing position and / or 2025-10-28

[0128] 31 of the above register setting via the register marks 27; 27.x detected by the sensors 28; 28.x - data from a digital profile of the machine obtained from a so-called fingerprint are used for the preparation of the printing process and / or for quality control.

[0129] In fingerprinting, i.e., the creation of a so-called fingerprint for a specific machine and production profile, a test image is printed on a test printing form under individual conditions using a printing press with standard parameters. Colorimetric parameters, such as color coordinates in the color space, color values ​​in the color wheel, or color densities, are then determined for the print result obtained with the printing press under the specific settings and conditions and stored in a data record 32 relating to the fingerprint. This data record 32, e.g., a file 32 with structured data, contains, for example, corresponding machine settings such as preset values ​​for the print start position, register, web tension specifications, production speed, and / or the printing units involved (02; 02.x) and, if applicable, their sequence, process temperatures, or similar information.Information on the anilox rollers used and / or, if applicable, on the screening process underlying the RIP. This also includes information on the materials, such as the substrate S used for the profile in question and / or the printing inks used, in particular any spot or special colors used, such as their type, viscosity, or operating temperature.

[0130] When setting up and / or operating a flexographic printing press, the print image of a printing plate for the printed product is subjected to a RIP process, and the RIP data from the RIP process is used, as described above, to produce the relevant flexographic printing plate 04; 04.x. A digital job description is created to describe the printed product to be produced and the resources to be used, which includes at least product-specific data. 2025-10-28

[0131] 32, as well as information on the machine configuration. This can be created via a user interface of the control station and stored in the machine control system.

[0132] In a particularly advantageous embodiment, when creating the digital job description, data from the fingerprint, especially data contained in data set 32, for configuring the printing unit and / or for setting printing units 02; 02.x and / or for presetting a print start position and / or a web tension value and / or for the viscosity and / or temperature of a printing ink to be used, and optionally one or more other machine settings mentioned above, are transferred to and / or imported into the digital job description. Alternatively, or preferably additionally, during a printing operation, data from the fingerprint, especially data contained in data set 32, is used.The results of a print run on the printing press under specific conditions using a test printing form are compared with color measurement data obtained from a fingerprint scan and results obtained from color measurement on the printed product. This comparison is used to assess print quality and / or identify any malfunctions that may impair quality. Based on these findings, any necessary corrective action can then be decided upon and implemented.

[0133] In particular, data from an output color profile of the printing press, stored in data set 32 ​​from the fingerprint, are used as color measurement data and compared – e.g., using data processing tools – with corresponding measurement results on the printed product. The data used preferably includes, for the printing inks used, data from the fingerprint regarding the respective color position in the applied color space and / or the color value in the relevant color wheel and / or the color density. 2025-10-28

[0134] 33

[0135] The relevant or respective colorimetric measurement can generally be carried out by a camera and its evaluation with regard to the target quantities, for example the color coordinates, color values ​​or color densities, or by specific measuring instruments, such as a photometer, in particular a spectrophotometer, with regard to color qualities, or a densitometer for measuring optical color densities.

[0136] If the discrepancy between the fingerprint data and the data relating to the printed product increases under otherwise constant printing conditions, a wear-related cause is suspected. For example, if a certain deviation in color density is reached, wear is suspected on one or more of the anilox rollers 11, which are responsible for the ink separation x. These rollers are then inspected and replaced if necessary.

[0137] Based on the information on the viscosity and / or temperature of the printing ink to be used, which is included in the digital order description, an advantageous further development – ​​for example, through a corresponding control device – allows the viscosity and / or temperature of the printing ink to be controlled during operation of the machine, for example, in at least one start-up phase, according to target values ​​obtained from the fingerprint data.

[0138] In an advantageous further training, based on the RIP process and using data from the fingerprint, error tolerances for a still tolerable deviation in an AE value and / or a color density AD are defined and these are used to evaluate the print quality when comparing the data of the fingerprint and the data relating to the printed product in the color measurement.

[0139] W1 -3971 POT

[0140] 2025-10-28

[0141] 34

[0142] Reference symbol list

[0143] 01 Printing unit, flexographic printing unit

[0144] 02 Printing unit, flexographic printing unit

[0145] 02.x printing unit, flexographic printing unit

[0146] 03 Printing cylinder, form cylinder

[0147] 03.x Printing cylinder, form cylinder

[0148] 04 Printing form, flexographic printing form

[0149] 04.x printing form, flexographic printing form

[0150] 05 -

[0151] 06 Ink Unit, Short Ink Unit

[0152] 06.x inking unit, short inking unit

[0153] 07 Counter-pressure cylinder, central cylinder

[0154] 08 Pressure gap

[0155] 08.x pressure gap

[0156] 09 Drive, drive motor

[0157] 09.x Drive, drive motor

[0158] 10 -

[0159] 11. Application roller, anilox roller

[0160] 12. Doctor blade assembly, chamber doctor blade

[0161] 13 Pressure element, elevation, pressure point

[0162] 14 layers, polymer layer

[0163] 15 -

[0164] 16 soil layer

[0165] 17 Carrier layer

[0166] 18 In-depth study

[0167] 19 Adhesives, adhesive film

[0168] 20 -

[0169] 21 Print area 2025-10-28

[0170] 35

[0171] 22 data records, file

[0172] 23 Control, machine control

[0173] 24 Drive devices, actuators, electric motors

[0174] 25 -

[0175] 26 Data processing equipment

[0176] 27 Reference mark, registration mark, registration cross

[0177] 27.x Reference mark, registration mark, registration cross

[0178] 28 Sensor, camera, scanner

[0179] 28.x Sensor, Camera, Scanner

[0180] 29 Register regulation

[0181] 30 -

[0182] 31 evaluation tools

[0183] 32 Data set, file d04 Thickness, total thickness d04.x Total thickness d14 Thickness d16 Thickness d17 Thickness h13 Height, point height

[0184] 121 Print length b21 Print width x xth color separation (with x = 1 , 2, 3, 4, ... n)

[0185] ANsoii specification for pressure setting

[0186] ANsoii(Ai) Specification for pressure setting (section by section)

[0187] ANsoi(( <t>) Specification for pressure setting (as a function)

[0188] DB data, image-related

[0189] DF data, print form related 2025-10-28

[0190] 36

[0191] <t>Rotation angle

[0192] S Substrate, printing material

[0193] Aa section (axial)

[0194] Ai section (in circumferential direction)< / t> < / t> < / t>

Claims

W1 -3971 POT 2025-10-28 37 Claims 1. Method for setting up and / or operating a flexographic printing unit (01) with at least one flexographic printing unit (02; 02.x) which comprises at least one form cylinder (03; 03.x) carrying a flexographic printing form (04; 04.x) and which forms a printing point with a counter-pressure cylinder in a printing position, wherein - Data (DF) for the flexographic printing form (04; 04.x) will be provided, - using the provided data (DF) relating to the flexographic printing form (04; 04.x), a specification relating to the setting of the print-on position (AN) S0 H; AN SO ii(Ai); AN S0 n( <t>)) is determined, - and finally the flexographic printing unit (02; 02.x) in at least one operating phase with this specification (AN) S0 H; AN SO ii(Ai); AN S0 n( <t>)) is operated for the printing start-up, characterized in that information originating from the prepress stage regarding the height (h13) of printing elevations (13) of the flexographic printing form (04; 04.x) or a size corresponding to this height (h13) is provided as data for the flexographic printing form (04; 04.x) and is used to determine the setting (AN). S0 H; ANsoii(Ai); ANsoii( <t>)) is used for the pressure-on setting.

2. Method according to claim 1, characterized in that, in addition to the data (DF) for the flexographic printing form (04; 04.x), data (DB) relating to the print image to be printed by the flexographic printing unit (02; 02.x) are also provided from the prepress stage, and that the setting of the print-on position (AN) is also provided. S0 H; AN SO ii(Ai); AN S0 n( <t>)) using the provided data (DB; DF) relating to the print image and the flexographic printing form (04; 04.x).

3. Method according to claim 2, characterized in that a specification (AN) is determined using data relating to the print image (DB). S0 H) for the printing W1 -3971 POT 2025-10-28 38 Position determined and this specification (AN) S0 H) is set and / or maintained at least for the duration of the rolling of a full print length (121) on the counter-pressure cylinder (07).

4. Method according to claim 2, characterized in that, over the printing length (121) extending in the circumferential direction of the form cylinder (03; 03.x), respective specifications (AN) relating to the printed image are defined for a plurality of circumferentially continuing sections (Ai) or angular positions using data (DB) relating to the printed image. SO ii(Ai)) or a specification in the form of a rotation angle <D abhängigen Funktion (AN S0 n( <t>)) for the pressure setting are determined, and that in production operation during the unwinding of a full print length (121) on the counter-pressure cylinder (07) the pressure setting is successively adjusted according to the sections (Ai) or rotation angles. <D zugeordneten Vorgaben (AN SO ii(Ai); AN S0 n( <t>)) varies and / or is adjusted.

5. Method for setting up and / or operating a flexographic printing unit (01) with at least one flexographic printing unit (02; 02.x) which comprises at least one form cylinder (03; 03.x) carrying a flexographic printing form (04; 04.x) and a counter-pressure cylinder (07) which forms a printing point (08; 08.x) with the form cylinder in a printing position, wherein - the data (DB) relating to the print image to be printed by the flexographic printing unit (02; 02.x) are provided from the prepress stage, - using the provided data relating to the print image (DB), a specification relating to the setting of the print-on position (AN) SO ii(Ai); ANsoii( <t>)) is determined, - and finally the flexographic printing unit (02; 02.x) in at least one operating phase with this specification (AN) SO ii(Ai); AN S0 n( <t>)) is operated for the pressure-on position, characterized in that over the pressure length (121) extending in the circumferential direction of the form cylinder (03; 03.x) for a plurality of themselves in 2025-10-28 39 Sections (Ai) continuing in the direction of the perimeter, using data (DB) relating to the print image from the prepress stage, according to the respective specifications (AN). SO ii(Ai)) or a specification (AN S0 n( <t>)) in the form of a rotation angle <D abhängigen Funktion für die Druck-An-Stellung ermittelt werden bzw. wird, und dass im Produktionsbetrieb während des Abrollens einer vollen Drucklänge (121) am Gegendruckzylinder (07) die Druck-An-Stellung sukzessive entsprechend der den Abschnitten (Ai) bzw. Drehwinkel <D zugeordneten Vorgaben (AN SO ii(Ai); AN S0 n( <t>)) varies and / or is adjusted.

6. Method according to claim 5, characterized in that, in addition to the data (DB) relating to the print image to be printed by the flexographic printing unit (02; 02.x) from the prepress stage, printing form-related data (DD) for the flexographic printing form (04; 04.x) are also provided, and that the specification relating to the setting of the print position is also determined using data (DF) relating to the flexographic printing form (04; 04.x).

7. Method according to claim 6, characterized in that information originating from the prepress stage regarding the height (h13) of printing protrusions (13) of the flexographic printing form (04; 04.x) or a dimension corresponding to this height (h13) is provided as printing form-related data for the flexographic printing form (04; 04.x) and is used to determine the specification (AN). SO ii(Ai); AN S0 n( <t>)) is used for the pressure-on position.

8. Method according to claim 1, 2, 3, 4, 5, 6 or 7, characterized in that the target (AN) is determined by S0 H; AN S0 n( <t>)) for the print setting as data relating to the print image (DB) information identifying the affected color separation (x) and / or form cylinder (03; 03.x) and / or a quantity representing an area coverage and / or dot density of printing elevations (13) and / or a progression of the area coverage in axial and / or circumferential direction W1 -3971 POT 2025-10-28 40. Information relating to and / or information representing an image position and / or a size representing a point size or point size distribution is provided and used.

9. Method according to claim 1, 2, 3, 4, 5, 6, 7 or 8, characterized in that the printed image relating to and used to determine the specification (AN) S0 H; AN SO ii(Ai); ANsoii( <t>)) Data (DB) used for the print setup are obtained and / or extracted from RIP data created in prepress for the relevant color separation of the print image to be printed.

10. Method according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, characterized in that to determine the specification (AN S0 H; AN SO ii(Ai); AN S0 n( <t>)) for the printing-on setting as printing-form-related data (DF) for the flexographic printing form (04; 04.x) representing the compressibility and / or elasticity of the printing form (04; 04.x) and / or a quantity representing the thickness (d04) of the flexographic printing form (04; 04.x) in the area of ​​the raised printing elements (13) and / or a quantity representing the thickness and / or compressibility and / or elasticity of an adhesive (19) are provided and used to determine the specification (AN). S0 H; AN SO ii(Ai); AN S0 n( <t>)) is used for the pressure-on setting.

11. Method according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10, characterized in that information on the height (h13) or on a dimension corresponding to this height (h13) is provided and used as information from the prepress stage, either contained in a RIP data set or derived from the printing plate production process, and / or that data on an exposure time and / or intensity of an exposure applied or to be applied during the production of the flexographic printing plate (04; 04.x) in question, corresponding to the height (h13) of the printing elevations (13), are used as a dimension corresponding to the height (h13) of the printing elevations (13). W1 -3971 POT 2025-10-28 41 Flexographic printing form (04; 04.x) or to a strength and / or duration of laser cutting of the flexographic printing form (04; 04.x) applied or to be applied during the production of the flexographic printing form (04; 04.x) or to a cutting depth applied or to be applied for the flexographic printing form (04; 04.x) from the prepress stage and provided for determining the specification (AN) S0 H; AN SO ii(Ai); ANsoii( <t>)) for the print setting as printing form-related data (DF) for the flexographic printing form (04; 04.x).

12. Method according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11, characterized in that the parameters used to determine the specification (AN) S0 H; AN SO ii(Ai); AN S0 n( <t>)) for the print start-up data (DB; DF) are or will be provided as structured data in a file (22) and / or via a signal connection to the prepress department or on a data carrier.

13. Method according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12, characterized in that the pressure application is effected by actuators (24) which act on the end face of the form cylinder (03; 03.x) and / or on the counter-pressure cylinder (07), and which are set as a preset (AN S0 H; AN SO ii(Ai); AN S0 n( <t>)) for the pressure setting, a setting force or a quantity representing a position or actuator is supplied.

14. Method according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 or 13, characterized in that for setting the circumferential register between the form cylinders (03.x) of several flexographic printing units (02; 02.x) - the form cylinders (03.x) equipped with the flexographic printing forms (04.x) are rotated and during this time each over the entire width of the printing form or in at least one axial section (Aa) in which a register mark (28.x) or an image section to be used for assessing the circumferential register is located 2025-10-28 42 is to be expected to be optically scanned by at least one or a respective sensor (28.x) with regard to the pattern of printing protrusions (13), - the image data obtained by the at least one or respective sensor (28.x) and the respective image of the respective entire flexographic printing form (04.x) or of the respective register mark (27.x) or the image section containing the respective register mark (27.x) is evaluated in the circumferential direction to determine the position of the image section to be used for setting the circumferential register or the register mark (27.x) to be used for setting the circumferential register.

15. Method according to claim 14, characterized in that the image data evaluated with regard to the position of the image section to be used or the registration mark (27.x) to be used are evaluated with regard to the relative position between the image sections or registration marks (27.x) of the involved mold cylinders (03.x) detected by the at least one or respective sensor (28.x) or with regard to a relative position to a machine phase position, and if a deviation is detected in the determined relative position of the registration marks (27.x) of two mold cylinders (03.x) from a target relative position, at least one of the mold cylinders (03.x) involved in the deviation is rotated by an angle of rotation opposite to the deviation and / or if a deviation of a mold cylinder (03.x) from a target relative position to the machine phase position is detected, the mold cylinder (03.x) in question is rotated by an angle of rotation opposite to the deviation.

16. Method according to claim 14, characterized in that the image data evaluated with regard to the position of the image section to be used or the register mark (27.x) to be used for the respective form cylinder (03.x) are applied to a relative position to the prepress for the relevant 2025-10-28 43 The data relating to the printing image (DB) of the form cylinder (03.x) known to the production of the flexographic printing form (04.x) is evaluated, and if a deviation from a target circumferential position expected for a correct register is detected, the relevant form cylinder (03.x) is rotated by an angle of rotation opposite to the deviation.

17. Method for setting up and / or operating a flexographic printing unit (02; 02.x) with several printing units (02.x) arranged one behind the other in a substrate path, each of which has a form cylinder (03.x) carrying a flexographic printing form (04.x) with a registration mark (27.x), wherein the circumferential register between the form cylinders (03.x) is set - the form cylinders (03.x) equipped with the flexographic printing forms (04.x) are rotated and during this process are optically scanned by at least one sensor (28.x) with regard to the pattern of printing elevations (13) over the entire width of the printing form or in at least one axial section (Aa) in which a register mark (28.x) or an image section to be used for the assessment of the circumferential register is to be expected, - the image data obtained by the at least one or respective sensor (28.x) and the respective image of the respective entire flexographic printing form (04.x) or of the respective register mark (27.x) or the image section containing the respective register mark (27.x) are evaluated in the circumferential direction to determine the position of the image section or the register mark (27.x) to be used for setting the circumferential register, - the image data evaluated with regard to the position of the image section to be used or the register mark to be used (27.x) are compared to the relative position between the image sections or register marks (27.x) detected by the at least one or respective sensor (28.x) of the 2025-10-28 44 involved form cylinders (03.x) and / or are evaluated for a relative position to a machine phase position, and if a deviation is detected in the determined relative position of the register marks (27.x) of two form cylinders (03.x) from a target relative position, at least one of the form cylinders (03.x) involved in the deviation is rotated by an angle of rotation opposite to the deviation, and / or if a deviation of a form cylinder (03.x) from a target relative position to the machine phase position is detected, the relevant or respective form cylinder (03.x) is rotated by an angle of rotation opposite to the deviation, or for the respective form cylinder (03.x) to a relative position to known from the prepress stage for the relevant form cylinder (03.x) and / or the affected ink separation and for the production of the flexographic printing form (04.x) underlying print image-related data (DB) is evaluated, and if a deviation from a target circumference position expected for a correct register is detected, the relevant form cylinder (03.x) is rotated by an angle of rotation opposite to the deviation.

18. Method according to claim 14, 15, 16 or 17, characterized in that the rotation of the mold cylinder (03.x) during scanning and / or to reduce or eliminate the deviation is carried out by a drive motor (09.x) assigned to the respective mold cylinder (03.x).

19. Method according to claim 14, 15, 16, 17 or 18, characterized in that the evaluation of the relative positions recorded via the sensors (28.x) and / or a determination of the rotation angle opposite to the deviation is carried out using software.

20. Method according to claim 14, 15, 16, 17, 18 or 19, characterized in that a zero position of the respective mold cylinder (03.x) is achieved by assigning a 2025-10-28 45 The angular position of the relevant forming cylinder (03.x) or of a drive (09.x) driving the forming cylinder (03.x) is defined in relation to the detected register mark (27.x).

21. Method according to claim 14, 15, 16, 17, 18, 19 or 20, characterized in that the sensor (28.x) detects the raised areas (13) provided on the flexographic printing form (04.x) and serving for printing, at least of an image section to be used for setting the circumferential register or of the register mark (27.x) to be used for setting the circumferential register, and compares the detected raised areas (13) with the pattern of raised areas (13) to be formed during the flexographic printing form production for the image section to be used for setting the circumferential register or for the register mark (27.x) to be used for setting the circumferential register known and / or obtained from the RIP data for this printing cylinder (03.x), and evaluates their position in the circumferential direction, compares them with a target position, and if necessary, rotates the respective printing cylinder (03.x).

22. Method according to claim 14, 15, 16, 17, 18, 19, 20 or 21, characterized in that the sensor (28.x) detects the raised areas (13) provided on the flexographic printing form (04.x) and serving for printing of an entire printing area (21) relating to the printed image or a part thereof, and compares the detected raised areas (13) in a matrix-like manner with the pattern of raised areas (13) to be formed during flexographic printing form production known from the RIP data for this printing cylinder (03.x), and checks, on the basis of the comparison, whether the correct flexographic printing form (04.x) is on the printing cylinder (03.x) in question and / or whether the flexographic printing form (04.x) is applied correctly on the printing cylinder (03.x).

23. Method according to claim 14, 15, 16, 17, 18, 19, 20, 21 or 22, characterized in that the form cylinder (03.x) carrying the flexographic printing form (04.x) is in W1 -3971 POT 2025-10-28 46 a printing position forms a printing point (08.x) with a counter-pressure cylinder (07), wherein, in order to find a suitable setting for the printing position before the start of production, data (DB) relating to the print image to be printed by the flexographic printing unit (02.x) are provided from the prepress stage as well as printing form-related data (DD) for the flexographic printing form (04.x), using the data relating to the print image (DB) and the printing form-related data (DD) for the flexographic printing form (04.x) a specification relating to the setting of the printing position (AN) S0 H; AN SO ii(Ai; AN S0 n( <t>)) is determined, and finally the flexographic printing unit (02.x) is operated with this specification in at least one operating phase (AN) S0 H; AN SO ii(Ai; ANsoii( <t>)) is operated for the pressure-on setting.

24. Method according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22 or 23, characterized in that data derived from a fingerprint, i.e., a print performed on the printing press under specific conditions with a test printing form, are transferred to the machine control for the configuration of the printing unit (01) and / or for the setting and / or control of printing press components and / or are imported into it and / or adopted as settings or setpoints when the printing press is started up, and / or that color measurement data derived from fingerprint data from a color measurement performed on the fingerprint are compared with measurement results obtained via a color measurement on the printed product and are used to assess the print quality and / or to determine a quality-reducing malfunction.

25. Method for setting up and / or operating a flexographic printing press with at least one flexographic printing unit (02; 02.x) which comprises a form cylinder (03; 03.x) carrying a flexographic printing form (04; 04.x) which, in a printing position, forms a printing point (08; 08.x) with a counter-pressure cylinder (07), wherein - the print image of a print template for the printed product to be printed is transferred to a RIP- 2025-10-28 47 is subjected to a process - RIP data originating from the RIP process is used to produce the relevant or respective flexographic printing form (04; 04.x), - a digital order description is created and / or stored in the machine control system to describe the printed product to be produced and / or the resources to be used for this purpose, which contains at least product-specific data as well as information on the configuration of the machine, - the relevant or respective printing form (04, 04.x) is arranged on the or each form cylinder (03; 03.x), - after the flexographic printing form (04; 04.x) or all flexographic printing forms (04; 04.x) are arranged on the relevant or respective printing cylinder (03; 03.x), a printing operation takes place, characterized in that data originating from a fingerprint, i.e., a print carried out on the printing press under specific conditions with a test printing form different from the relevant or respective flexographic printing forms (04) of the printed product to be printed, for configuring the printing unit and / or for setting and / or controlling printing press components are transferred and / or imported into the machine control and / or used as settings or when starting up the printing press.Target values ​​are adopted and / or color measurement data from fingerprint data is compared with measurement results obtained via color measurement on the printed product and used to assess print quality and / or to determine a quality-reducing malfunction.

26. Method according to claim 24 or 25, characterized in that color measurement data are taken from an output color profile of the printing press stored in the fingerprint data and compared with corresponding measurement results on the printed product. 2025-10-28 48 27. Method according to claim 26, characterized in that the color measurement data for the printing inks used, namely data stored in the fingerprint data relating to the respective color location in the applied color space and / or to the color value in the relevant color circle and / or to the color density, are used and compared with the corresponding measurement results.

28. Method according to claim 24, 25, 26 or 27, characterized in that, in the event of an increasing deviation between the data relating to the fingerprint and the data relating to the printed product in the color measurement under otherwise constant printing conditions, a wear-related cause is inferred.

29. Method according to claim 28, characterized in that, from a certain deviation in the color density, a conclusion is drawn as to wear of an anilox roller (11) encompassed by the flexographic printing unit (02; 02.x), this roller is checked and replaced if necessary.

30. Method according to claim 24, 25, 26, 27, 28 or 29, characterized in that, based on the information on the viscosity and / or temperature of the printing ink to be used, which is included in the digital order description, the viscosity and / or temperature of the printing ink is controlled in operation according to the information included.

31. Method according to claim 24, 25, 26, 27, 28, 29 or 30, characterized in that, based on RIP data generated in the RIP process using fingerprint data, error tolerances for a deviation in an AE value and / or color density that is still tolerable are defined and these are used to evaluate the print quality when comparing the data relating to the fingerprint and the printed product in the color measurement. 2025-10-28 49 32. Flexographic printing press with a flexographic printing unit (01), in particular for carrying out a method for setting up and / or operating a flexographic printing unit (02; 02.x) according to claim 1 or according to claim 1 in conjunction with one of claims 2 to 4, or 7 to 16, comprising - at least one flexographic printing unit (02; 02.x) which includes at least one form cylinder (03; 03.x) carrying a flexographic printing form (04; 04.x) and which, in a printing position, forms a printing point (08; 08.x) with a counter-pressure cylinder (07), wherein actuators (24) acting on the end face of the form cylinder (03; 03.x) and / or the counter-pressure cylinder (07) are provided, - a control unit (23) which is in signal communication with the actuators (24) and is configured to control the actuators (24) according to a specification (AN) S0 H; ANsoii(Ai); ANsoii( <t>)) to regulate or control the pressure-on position, - and data processing means (26) to which input data originating from the prepress stage relating to the height (h13) of printing elevations (13) of the flexographic printing form (04; 04.x) in question, or to a dimension corresponding to this height (h13), can be supplied and which are equipped to use this data relating to the height (h13) to generate a specification (ANsoii; ANsoii(Ai); AN S0 n( <t>)) to determine the pressure-on position of the actuators (24) and to forward this information to the control unit (23) for the control of the actuators (24).

33. Flexographic printing press according to claim 32, characterized in that the data processing means (26) are configured to receive data (DB) relating to the print image to be printed and / or RIP data relating to the color separation on the input side via a data interface and / or a signal connection to the prepress stage and to determine the specification (AN). S0 H; AN SO ii(Ai); ANsoii( <t>to include )). W1 -3971 POT 2025-10-28 50 34. Flexographic printing press, including - a flexographic printing unit (01) with at least one flexographic printing unit (02; 02.x) which includes at least one printing cylinder (03; 03.x) carrying a flexographic printing form (04; 04.x) and which, in a printing position, forms a printing point (08; 08.x) with a counter-pressure cylinder (07), wherein actuators (24) acting on the end face of the printing cylinder (03; 03.x) and / or the counter-pressure cylinder (07) are provided, - a control unit (23) which is in signal communication with the actuators (24) and is configured to control the actuators (24) according to a specification (AN) SO ii(Ai); ANsoii(d>)) to regulate or control the pressure-on position, - Data processing equipment (26) to which data (DB) relating to the print image to be printed and / or RIP data relating to the color separation can be supplied on the input side, - wherein the data processing equipment (26) is set up, using the data (DB) relating to the print image or the color separation from the prepress stage, a plurality of sections (Ai) continuing in the circumferential direction of the form cylinder (03; 03.x) according to the respective specifications (AN) SO ii(Ai)) or a specification (AN S0 n( <t>)) in the form of a rotation angle <D abhängigen Funktion für die Druck-An-Stellung zu ermitteln und ausgangsseitig an die Steuerung (23) zur Steuerung der Stellantriebe (24) entsprechend der den Abschnitten (Ai) bzw. Drehwinkel <D zugeordneten Vorgaben (AN SO ii(Ai); AN S0 n( <t>)) forward.

35. Flexographic printing press according to claim 34, characterized in that the data processing means (26) are configured to receive input-side printing form-related data (DF) for the flexographic printing form (04; 04.x), in particular information on the height (h13) of printing protrusions (13) of the flexographic printing form (04; 04.x) or on a dimension corresponding to this height (h13) and to determine the specification (AN). S0 H); AN SO to use ii(Ai). 2025-10-28 51 36. Flexographic printing machine according to claim 34 or 35, characterized by its design according to one of claims 32 or 33 and / or for carrying out a method according to claim 4 or 5 or according to claim 4 or 5 in conjunction with one of claims 6 to 16.

37. Flexographic printing press with several form cylinders (03; 03.x) each carrying a flexographic printing form (04; 04.x), wherein the respective flexographic printing form (04; 04.x) carries a registration mark (27.x) in the form of one or a group of several printing elevations (13), characterized in that an optical sensor (28.x) is provided for each flexographic printing unit (03.x) and is directed over the entire width of the printing form or at least in an axial section (Aa) in which a registration mark (28.x) or an image section to be used for assessing the circumferential register is to be expected, onto the surface of the flexographic printing form (04.x).

38. Flexographic printing press according to claim 37, characterized in that the sensors (28; 28.x) are in signal communication on the output side with the receivers of the sensors (28; 28.x) with regard to a relative position of the register marks (27; 27.x) of several form cylinders (03; 03.x) received by the sensors (28; 28.x) or with regard to a relative position to a machine phase position software-supported evaluation means (31).

39. Flexographic printing unit (01) according to claim 37, characterized in that the sensors (28.x) are in signal communication on the output side with software-supported evaluation means (31) which evaluate the image data recorded by the sensors (28.x) with regard to a relative position of the register marks (27.x) to a target circumferential position obtained from RIP data of the prepress stage.

40. Flexographic printing machine according to claim 38 or 39, characterized in that the W1 -3971 POT 2025-10-28 52 The form cylinders (03; 03.x) of the flexographic printing units (03.x) each have their own drive motor (09; 09.x), whose drive controllers are in signal connection to control and / or regulation means of a register control (29), which is in signal connection on the input side to the evaluation means (31).

41. Flexographic printing machine according to claim 37, 38, 39 or 40, characterized by its design according to one of claims 32 to 36 and / or for carrying out a method according to one of claims 14 to 23 or according to claim 24 in conjunction with one of claims 14 to 23.

42. Flexographic printing press with at least one flexographic printing unit (02; 02.x) which includes a printing cylinder (03; 03.x) carrying a flexographic printing form (04; 04.x) which, in a printing position, forms a printing point (08; 08.x) with a counter-pressure cylinder (07), and with a machine control having a data storage device in which a digital job description is stored, which contains at least product-specific data as well as information on the configuration of the machine, wherein the job description contains data and / or color measurement data from a color measurement carried out on the fingerprint, i.e. a print carried out on the printing press under specific conditions with a test printing form different from the relevant or respective flexographic printing forms (04) of the printed product to be printed.

43. Flexographic printing machine according to claim 42, characterized in that it comprises a measuring device for colorimetric measurement on the printed product and data processing means which are set up to compare the measurement results obtained via the colorimetric measurement on the printed product with the color measurement data stored in the fingerprint data. 2025-10-28 53 44. Flexographic printing machine according to claim 42 or 43, characterized in that a control device for controlling the viscosity and / or temperature of the printing ink to be printed is provided, which receives a setpoint specification from the fingerprint data stored in the order description via a signal connection to the machine control.

45. Flexographic printing machine according to claim 42, 43 or 44, characterized by its design according to one of claims 32 to 41 and / or for carrying out a method according to one of claims 24 to 31.< / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t> < / t>

Images