Drum for aligning magnetic or magnetizable particles contained in a coating medium on a substrate and machine for generating optically variable graphic elements

Abstract

A drum (26) for aligning magnetic or magnetizable particles (P) contained in a coating medium (06) on a substrate (02), which drum comprises in the region of its outer circumference a matrix of a number n x m (in other words n times m, where n, m ∈ N > 1) of field-providing elements (24), in short magnet elements (24), which are arranged in n rows running parallel to the axis and m columns running in the circumferential direction, and which drum has in the circumferential region a suction element (34) with outwardly directed suction openings (42). In the magnet elements (24) of a plurality of columns or of all columns, respectively, a plurality or all of the magnet elements (24) arranged one after another with one another are respectively grouped with at least one of the assigned suction elements (34) in a respective structural unit (36) as an action unit (36) and thus can be positioned in the circumferential direction as a whole and respectively independently of all other such action units (36) and / or can be designed separately from the drum (26). The invention also relates to a system for assembling and / or positioning the magnet elements (24) and a machine (01) for generating optically variable graphic elements on a substrate (2).

Description

Technical Field

[0001] The present invention relates to a roller for aligning magnetic or magnetizable particles contained in a coating medium on a substrate, as described in claim 1 or 13, and a machine for producing optically variable primitives. Background Technology

[0002] EP2114678B1 discloses a printing press having a screen printing unit and means for aligning magnetic or magnetizable particles contained in printing ink or paint. The means includes a roller having a plurality of magnetic field-generating elements arranged in a plurality of axially adjustable support rings. The support rings have openings on their inner circumference that mate with openings on the shaft of a support ring to allow air to be drawn in. In one example, the openings on the shaft are selectively closed by plugs, such as screw-on elements. The support rings can be axially positioned on the shaft and can be clamped on the shaft by a tensile force acting in the circumferential direction.

[0003] US2011 / 0168088A1 relates to an apparatus for orienting magnetic sheets, in one embodiment of which magnets are arranged on the circumference of a disk arranged on a shaft and can be replaced with disks having a different distribution.

[0004] CN103192591A discloses an apparatus for aligning magnetic or magnetizable particles contained in a coating medium with a roller, the roller comprising a matrix of magnetic elements arranged in a matrix configuration in the region of its outer circumference. Here, groups of magnetic elements arranged axially adjacent to each other and sequentially arranged circumferentially are respectively arranged on axially extending support elements and are axially movable on the support elements. After axial positioning, the magnetic elements in the support elements can be clamped in the respective support elements by screws acting in the circumferential direction. The support elements can be positioned circumferentially. The axially extending support elements are clamped at their ends by support rings that surround the ends in the circumferential direction.

[0005] WO2014 / 037221A1 discloses a magnetic roller having multiple roller segments. The magnetic roller includes multiple magnetic elements sequentially arranged around its circumference, as well as regions with air suction openings surrounding both sides of the magnetic elements. Support elements with cylindrical circumferential surfaces are provided between such roller segments.

[0006] DE112012006348B4 discloses a magnetic roller with a plurality of spaced-apart support rings, the support rings being adjustable relative to their axial position on the roller. These support rings have annular grooves on their outer circumference, the annular grooves being sequentially fitted with magnetic devices in the circumferential direction and adjustable in the circumferential direction after loosening the adjusting screws on the relevant support rings. An air suction system has openings leading to the bottom of the annular grooves and the shoulder located therebetween, through which suction air can be drawn from suction openings in the cover plate forming the roller housing.

[0007] WO2020 / 094291A1 discloses a magnetic roller with an axially movable annular element, on which a magnetic device can be positioned in a circumferential direction. An air suction opening is provided in the edge region of the annular element, through which air can be drawn from a suction opening in a cover plate arranged thereon. Each annular element is provided with a cover plate having an opening. Summary of the Invention

[0008] The purpose of this invention is to provide a roller for aligning magnetic or magnetizable particles contained in a coating medium on a substrate, and a machine for producing optically variable primitives.

[0009] According to the invention, this objective is achieved by the features of claim 1 or 13.

[0010] The advantages that can be achieved by utilizing the features according to the invention are particularly: to achieve or improve high accuracy in generating optically variable primitives and / or high flexibility in providing the application range or process range of optically variable primitives.

[0011] In a suitable embodiment of a roller for aligning magnetic or magnetizable particles contained in a coating medium on a substrate, the roller comprises, in a matrix-like manner, a plurality of n×m (in other words, n multiplied by m, where n, m ∈ N>1) elements, or simply magnetic elements, providing a magnetic field, arranged in a row of n parallel axes and in m columns extending in the circumferential direction, and including suction elements with outwardly pointing suction openings in the circumferential region. In a particularly advantageous embodiment, among the plurality of columns of magnetic elements, a plurality of magnetic elements arranged sequentially to each other are each assembled in a corresponding structural unit as an action unit with at least one assigned suction element, and thus can be positioned in the circumferential direction and / or separated from the roller in general and independently of all other such action units. Advantageously, the actuating unit includes at least one pipe interface on the lower side of its insertion roller and / or a roller inner body surrounded by the roller and directly or indirectly carrying the corresponding actuating unit on its circumference, and includes multiple pipe interfaces for conducting suction air on the outer side of the roller inner body.

[0012] This enables the free positioning of the magnetic components in the circumferential direction, wherein each assigned suction element is in a defined relative position with respect to the corresponding magnetic component, and achieves good retention.

[0013] Preferably, the unit includes at least one pipe interface on its lower side inside the insertion roller and a roller inner body included by the roller and directly or indirectly carrying the corresponding functional unit on its circumference, and a plurality of pipe interfaces for conducting suction air are included on the outer side of the roller inner body.

[0014] In a particularly advantageous improvement, at least two magnetic elements arranged sequentially in the same column are arranged on or in magnetic element carriers that are different from each other and can be independently positioned on the roller in the circumferential direction, wherein the at least two magnetic elements arranged sequentially on the respective magnetic element carriers are adjustablely supported in the circumferential direction within an adjustable range relative to the magnetic element carriers that carry the magnetic elements.

[0015] In an advantageous alternative or additional improvement, at least two or all magnetic elements arranged sequentially in the same column are supported as a group on or at a common support element, and can vary in axial position within or on the roller together with and independently of the magnetic elements in adjacent columns. In a particularly advantageous embodiment, at least two or all magnetic elements in the same column are arranged on corresponding magnetic element carriers, which can be independently positioned circumferentially on and / or separated from the common support element. Furthermore, at least two or all magnetic elements in the same column are axially adjustable relative to the corresponding magnetic element carrier within an adjustable range. Advantageously, the support element, having multiple working units on its circumference and carried by the roller inner body, has multiple pipe interfaces on its inner side that mate with pipe interfaces on the roller inner body to facilitate air suction, and multiple pipe interfaces on its outer side that mate with pipe interfaces of the working units to facilitate air suction.

[0016] A particularly advantageous embodiment of a machine for generating optically variable primitives on a substrate includes: a substrate reservoir; at least one printing mechanism for printing and / or being able to print on sheets of substrate guided through the machine in a matrix configuration of m columns and n rows on at least a first surface; a product receiving section by means of which the processed substrate can be integrated into an assembly; and an alignment device disposed in the substrate path between the printing mechanism and the product receiving section for aligning magnetic or magnetizable particles using rollers, wherein the rollers are preferably designed according to one or a combination of the aforementioned rollers.

[0017] High precision in machining optically variable primitives and / or high flexibility in providing application range or process range for optically variable primitives are achieved or improved, in the case of the design of clamping devices for fixing ring elements and / or as structural units, and / or by the axial and / or circumferential mobility of individual or all magnetic elements and / or by clamping devices for clamping magnetic elements or structural units.

[0018] In an advantageous embodiment, multiple structural units, each including at least one conduit interface for facilitating air intake on its underside, are disposed on the inner body of the drum or on a common support element arranged on the inner body of the drum, wherein the inner body of the drum and / or the corresponding support element includes multiple conduit interfaces on the outwardly facing side, having optionally closable through-holes, in particular orifices, for facilitating air intake.

[0019] A particularly advantageous embodiment of the aforementioned roller has, when viewed axially, four to eight columns or groups of each other in the region of its outer circumference, each column or group having a plurality of, for example, 2 to 12, particularly 5 to 10, magnetic elements arranged sequentially in the circumferential direction to provide a magnetic field, referred to as magnetic elements.

[0020] Unless otherwise expressly stated, the axial direction in this document and below refers to the direction parallel to the axis of rotation of the drum.

[0021] In principle, unrelated to, but particularly advantageously relevant to, the implementation of the alignment device is the following advantageous improvement, wherein at least two, preferably all, magnetic elements arranged sequentially in the same column are supported as a group on or at a common support element, and their axial position in the roller or on the roller can vary with respect to the support element and independently of the magnetic elements in adjacent columns. At least two or all of the magnetic elements in the relevant group are arranged on corresponding magnetic element carriers that can be independently positioned circumferentially on the common support element and / or separable from the support element, and are adjustablely supported axially within an adjustable range on the relevant magnetic element carriers. This is preferably applicable to multiple columns, and particularly to all columns.

[0022] In principle, regardless of the embodiments having the aforementioned functional units and / or the aforementioned embodiments having axially locatable magnetic elements, but preferably related to one or more of the aforementioned advantageous embodiments, an advantageous improvement to the device for aligning magnetic or magnetizable particles contained in a coating medium on a substrate has a roller having, for example, n×m (where n,m∈N>1) magnetic elements arranged in a matrix in the region of its outer circumference, the magnetic elements being arranged in rows extending parallel to n axes and columns extending in the circumferential direction, wherein at least two, preferably all, magnetic elements arranged sequentially in the same column are arranged on or inside magnetic element carriers that are different from each other and can be independently positioned in the circumferential direction of the roller, and at least two or all of the magnetic elements arranged on the respective magnetic element carriers are adjustablely supported in the circumferential direction within an adjustable range relative to the magnetic element carriers carrying the respective magnetic elements.

[0023] In principle, regardless of the design of the roller having the aforementioned functional units and / or the aforementioned embodiments of the roller having axially locating magnetic elements and / or the aforementioned embodiments of the roller having circumferentially locating magnetic elements, but preferably in relation to one or more of the aforementioned advantageous embodiments, a particularly advantageous improvement of the roller, viewed axially in the region of its outer circumference, is that it has m groups, each group having a plurality of magnetic elements arranged sequentially in the circumferential direction, wherein a plurality or all of the magnetic elements in one group, particularly in multiple or all of the groups, are supported within the roller. On a common annular support element on the body and can be positioned on the support element in the circumferential direction, wherein the magnet element, the holder containing the magnet element, or the magnet element carrier carrying the magnet element, when viewed in the axial direction of the drum, includes at least one clamping element on each side, the effective end of which is fitted below into a stop surface that extends in the circumferential direction on the corresponding end face of the annular support element in the assembled state and is inwardly pointing, i.e., its surface normal points to the inside of the drum and / or prevents the magnet element or the magnet element carrier from moving radially out by cooperating with the clamping element in the clamping position.

[0024] In particular, machines for generating optically variable primitives on segments of printing material, such as securities printing presses, have a printing material reservoir specially designed as a sheet feeder, and at least one printing mechanism, particularly a screen printing mechanism, through which sheets of substrate guided through the machine on the transport path are printed and / or can be printed in a matrix of multiple columns and rows on at least the first surface, and the machine has a product receiving section through which processed substrates can be assembled into an assembly, the product receiving section being particularly designed as a stacking and receiving device. The machine preferably includes, in the transport path of the printing material segments between the printing mechanism and the product receiving section, a device for aligning magnetic or magnetizable particles using rollers, according to the above-described or combined embodiments.

[0025] Further details and design variations can be found in the embodiments. Attached Figure Description

[0026] Embodiments of the present invention are shown in the accompanying drawings and described in more detail below.

[0027] in:

[0028] Figure 1 An embodiment of a machine for producing optically variable primitives on a substrate is shown;

[0029] Figure 2A schematic diagram of a substrate printed in a printing element using an optically variable coating medium is shown, wherein a) shows a state in which magnetic or magnetizable particles are not yet oriented, and b) shows a state in which the imaging portions have been aligned, in the form of the number "1" in this example;

[0030] Figure 3 A schematic diagram of the printing and downstream alignment process using an imaging printing cylinder and a cylinder with magnetic elements is shown, exemplarily illustrating a single sheet of substrate that widens in a trapezoidal shape at the rear end.

[0031] Figure 4 An embodiment of the magnet roller is shown in perspective;

[0032] Figure 5 A separate view is shown of a carrier element in which multiple magnetic elements are arranged sequentially in the circumferential direction;

[0033] Figure 6 A cross-sectional view of a carrier element equipped with a magnet component is shown, but with... Figure 5 It is a narrower implementation scheme;

[0034] Figure 7 Showing according to Figure 4 A partial view of the longitudinal section of the roller;

[0035] Figure 8 An embodiment of a valve that selectively opens and closes the air intake opening is shown;

[0036] Figure 9 An embodiment of an action unit including a magnet element and a suction element is shown with a less complex example;

[0037] Figure 10 Showing according to Figure 9 A top view of the functional unit, but without magnets and housing;

[0038] Figure 11 A cross-section of an embodiment of an action unit including a magnet element and a suction element is shown, wherein the suction element has an identifiable adjustment mechanism for axially adjusting the magnet element.

[0039] Figure 12 A cross-sectional view is shown of an embodiment of an action unit including a magnetic element and a suction element, the action unit having an identifiable adjustment mechanism for adjusting the magnetic element in the circumferential direction.

[0040] Figure 13 A perspective view of an assembly aid mechanism for installing or removing and / or positioning the action unit is shown;

[0041] Figure 14 Showing has Figure 13A perspective view of the assembly auxiliary mechanism arranged on the ring element;

[0042] Figure 15 A perspective view of the inner body of the drum equipped with six annular elements is shown;

[0043] Figure 16 A cross-sectional view of a drum having a drum interior, an annular segment-shaped support element disposed on the drum interior, and, for example, ten working units disposed on the support element is shown.

[0044] Figure 17 An enlarged partial view of the fixing device used to support the element is shown;

[0045] Figure 18 Details of the fixing device used to support the element are shown. Detailed Implementation

[0046] A machine 01, such as a printing press 01, particularly a securities printing press 01, for generating optically variable features 03 on a substrate 02, such as a web-like or sheet-like printing material 02, includes: an application device 04, such as a printing mechanism 04, through which an optically variable coating medium 06, such as an optically variable printing ink 06 or paint 06, is applied to at least one application site, such as a printing site 11, capable of being applied in the form of printed features 08 to at least a first surface of the substrate 02, such as the printing material 02, either entirely or in a partial area; and a device 07 for aligning particles P contained in the optically variable coating medium 06 applied to the substrate 02 and responsible for generating the optical variability (see, for example, see...). Figure 1 The device 07 will also be referred to hereinafter as an alignment device 07, or as an imaging alignment device 07 because the alignment device achieves imaging of optically variable patterns or subjects by aligning particles P in a defined manner. For example, a coating medium 06 containing particles P is applied to a substrate 02, and the primitive 03 obtained by subsequently imaging and aligning the previously randomly oriented particles P is, for example, in... Figure 2 The number "1" is used to illustrate this schematically. Here, a) indicates that the coating medium 06 has been applied and is, for example, still randomly oriented, and b) indicates that imaging alignment has already occurred.

[0047] The printed pattern 08, consisting of a variable coating medium 06, applied to the substrate 02 by the application device 04 before processing by the alignment device 07, may correspond in size and position to the optically variable pattern 03 to be produced, or may be larger than these patterns, and may even extend across multiple sheets 09 if necessary. In the case of a larger printed pattern 08, for example, the optically variable pattern 03 is not produced by alignment on the entire surface coated with the optically variable coating medium 06.

[0048] As the particles P responsible for generating optical variability, the coating medium 06, such as printing ink 06 or paint 06, contains magnetic or magnetizable non-spherical particles P, such as pigment particles P, hereinafter also referred to as magnetic flakes.

[0049] Machine 01 is preferably used to produce printed sheets 09, such as securities 09, particularly banknotes 09. This particularly includes the production of intermediate products of securities, such as the production of printing materials 02 in the form of strips 02, particularly in the form of single sheets of printing material 02, having printed images of multiple securities 09. The substrate 02 can be formed from, for example, paper based on cellulose or preferably based on cotton fibers or containing at least cellulose or cotton fibers, from synthetic polymers, or from mixtures of the above materials. The substrate may be present uncoated or already coated in the application device 04 prior to coating, and the substrate may be unprinted or printed once or multiple times in one or more upstream processes or otherwise mechanically processed. On the printing material segments 02 formed by longitudinal segments of the web-like substrate 02 or by single sheets of paper from the sheet-like substrate 02, multiple printing sheets 09, such as banknotes 09 to be produced or their printed images, can preferably be arranged in a matrix, adjacent to each other in rows extending transversely to the transport direction T and sequentially in columns extending along the transport direction T. Alternatively, they can be arranged during the processing of the substrate 02 (e.g., in...). Figure 2 and Figure 3 (as shown in the image).

[0050] The machine 01, designed as a printing press 01, can in principle include one or more printing mechanisms 04 of any printing method. However, in the embodiment shown here, for simplicity, the machine includes a printing mechanism 04, particularly one operating according to a flexographic printing method or preferably a screen printing method, by which an optically variable coating medium 06 is applied or can be applied to a first surface of the substrate 02. With the aforementioned printing methods, particularly screen printing, a greater layer thickness can be applied, for example, compared to other printing methods. The designation of the substrate 02 or the printing material 02 as the "first surface" is chosen voluntarily and is used to indicate the side of the substrate 02 on which the optically variable coating medium 06 to be applied, or has been applied, or can be applied by the alignment device 07 downstream.

[0051] In the illustrated and preferred design, the printing press 01 includes a substrate reservoir 13, preferably designed as a sheet feeder 13, for example, designed as a sheet-like printing substrate 02. The substrate 02, if necessary, is conveyed via a separate printing or processing unit or can be conveyed to at least one printing mechanism 04, such as a flexographic printing mechanism or preferably a screen printing mechanism 04, which applies an optically variable coating medium 06. This printing mechanism, between the printing mechanism cylinder 14, particularly the plate cylinder 14 (e.g., screen printing cylinder 14), and a common impression cylinder 17, forms a printing area 11 for printing, for example, the first side, of the printing substrate 02 (see, for example, see...). Figure 1 ).

[0052] Preferably, the printing mechanism 04, as an imaging cylinder, includes a plate cylinder 14 having a plurality of, particularly similar and / or identical, imaging printing elements 18, hereinafter also referred to as printing subjects 18, or particularly similar and / or identical groups of imaging printing elements 18 or printing subjects 18 arranged circumferentially. These printing elements or printing subjects are arranged in multiple, for example four to eight, particularly five to seven, for example six columns spaced apart from each other transversely to the transport direction T, along a circumferential length corresponding to the length of the printed image, and in multiple rows spaced apart from each other in the transport direction T along a cylinder width corresponding to the width of the printed image. In the case of the printing mechanism 04 for flexographic printing operations, these printing subjects 18 are designed in the form of relief printing, and in a preferred case for screen printing operations, they are designed in the form of stencil printing.

[0053] The printing material 02 of the alignment device 07 can be conveyed by the printing mechanism 04, which applies an optically variable coating medium 06, via a feeding mechanism, such as one or more feeding devices 12 designed as conveying rollers 12. In the case of the web-shaped printing material 02, the feeding mechanism can be formed by one or more driven and / or non-driven rollers.

[0054] After passing through the alignment device 07 described in detail below, the printing material 02 can be fed directly or via other feeding mechanisms, such as another conveyor roller of another feeding device 21, and via the second feeding device 21, to the product receiving section 22 for accommodating the printing material 02 processed and / or processed in the machine 01, and in the case of single sheet printing material 02, to the stacking and receiving device 22. In the preferred case of single sheet printing material 02, a feeding mechanism is provided here, such as one or more conveyor rollers or conveyor drums, or as shown here, a feeding device 21 designed as a gripper around the feeder 21, particularly a chain gripper system 21. Through the single sheet feeding mechanism, the single sheet printing material 02 is transferred in segments from the conveying path of the alignment device 07 via one or more additional conveyor rollers if necessary, and is, for example, conveyed to the stacking and receiving device 22.

[0055] On the transport path away from the alignment device 07, there is at least one drying device, such as a radiation dryer 23, having one or more dryers 23 pointing towards the first side of the printing material 02, and, if necessary, a cooling device (not shown), such as a cooling roller. In an improvement (not shown), on the transport path between the alignment device 07 and the stacking and receiving device 22, there is at least one inspection device (not shown), such as a surface scanning or line scanning camera.

[0056] In an advantageous improvement, the printing mechanism 04 and the alignment device 07 can, for example, be structurally combined as modules to form a device 16 for generating optically variable primitives. For example, in an improved embodiment, multiple IDs can be sequentially arranged within the machine 01. In the advantageous modular embodiment, the device 16 is inserted into or can be inserted into the transport path of the machine 01 through interfaces on the input and output sides that correspond to the respective interfaces of the upstream and downstream feed systems.

[0057] The alignment device 07, which is described in detail below, is arbitrary in principle in terms of its design, design variations, or configuration, but it is preferred or can be installed in the aforementioned machine 01 or printing press 01.

[0058] The alignment device 07 for forming optically variable primitives 03, for example for forming optically variable effects onto an optically variable coating medium 06 previously applied to a substrate 02, particularly a printing material 02, in the form of printed primitives 08, includes a defined transport path along which the substrate 02 to be fed by the alignment device 07 is effectively connected to the alignment device 26 from an entry region in a defined manner, wherein, in the entry region, the substrate 02 to be processed and having an optically variable coating medium 06 on its first surface is transported or can be transported, the alignment device 26 as an acting element 24 including an element 24 providing a magnetic field, referred to as a magnetic element 24, preferably effectively connected in such a way that the magnetic element 24 of the alignment device 26 for imaging alignment and the printing material 02 printed with printing ink 06 containing particles P move synchronously with each other at least in a segment of the transport path. Here, the alignment device 26 is designed as a magnetically effective roller 26, or simply a magnetic roller 26, which has magnetic elements 24 arranged on its circumference and guides or feeds the printing material 02 from the inlet area toward the outlet area of ​​the alignment device 07.

[0059] The magnet element 24 may be formed directly from a single or multiple magnets 27 themselves, or may preferably comprise one or more magnets 27 preferably detachably arranged on or in the holder 28, such as on the base 28. Here, magnet 27 is generally understood as a magnetically effective device that permanently or switchably generates a sufficiently strong magnetic field, particularly for aligning particles contained in the coating medium 06 on the substrate 02 on which they are guided, as described herein. Here, magnet 27 may be formed from one or more permanent magnets with or without graffito, from electromagnets, or from a combination of one or more permanent magnets and / or one or more electromagnets. Whether it is a single magnet or a combination of multiple magnets (e.g., permanent magnets and / or electromagnets), unless otherwise explicitly stated, the term magnet 27 is also understood below to refer to multiple magnets 27 assigned to the same magnet element 24 and integrally forming a magnet unit. Below the magnet element 24, there should also be an embodiment having a plurality of single or multiple magnets 27 included by and spaced apart from each other by the magnet element 24, as applicable, for example, to cases where corresponding magnetic fields are applied to two different locations on the same sheet of paper 09. Here, such an arrangement of magnets 27 or multiple magnets 27 of the same magnet element 24 can be housed in the housing 38 of the magnet element 24, which can be arranged separately from or on the holder 28.

[0060] In principle, two such magnetic rollers 26 can also be arranged in the conveying path, with the magnetic rollers arranged on the same or different surfaces of the substrate 02 to be fed along the conveying path.

[0061] In an advantageous embodiment, the alignment device 07 is a drying and / or curing device 19, such as a radiation dryer 19, particularly a UV radiation dryer 19, or simply a UV dryer 19, which is preferably designed as a UV-LED dryer 19 and / or a part in the conveying path that mates the substrate 02 with the magnetic roller 26.

[0062] The magnetic roller 26 is preferably arranged on the second surface of the substrate 02 in the conveying path of the substrate to be fed, such that the magnetic roller, with its first surface, which is coated with an optically variable coating medium 06 in the upstream line, points outward as it passes over the magnetic roller 26, especially when it is conveyed on the magnetic roller 26.

[0063] The magnetic roller 26 includes a single-piece or preferably multi-piece roller body 29, on which the magnetic elements 24 are preferably detachably arranged. The single-piece or preferably multi-piece roller body 29 is rotatably supported or can be supported in a frame. Here, the concept of roller body 29 should include both closed structures, i.e., roller shells with more or less closed surfaces, and open structures, i.e., scaffolding or frame-like components, such as... Figure 4 The example shown.

[0064] The magnetic roller 26 has a plurality of magnetic elements 24 in the region facing the substrate path, such as in the region of the outer circumference, particularly in the region of the outer cylindrical envelope of the roller body 29, which are used to orient at least a portion of the magnetic or magnetizable particles P of the coating medium 06 on the passing substrate 02.

[0065] In particular, for the preferred case where each substrate segment has multiple sheets 09, for example, for each sheet 02 of printing material or substrate, multiple columns or groups are provided on the roller 29, in particular corresponding to the number of columns on the printing material segment 02, which is m (m∈N>1), and in particular corresponding to the number of rows on the printing material segment 09 to be processed, which is n (n∈N>1), extending parallel to each other, or in the conveying direction T of the substrate 02 and / or in the circumferential direction of the roller 26, arranged in columns or groups sequentially or in a matrix, that is, there are n×m, i.e., n multiplied by m, arranged in a matrix on the outer circumference, where n,m∈N (in other words, n and m come from the set of natural numbers greater than 1). These magnetic elements are preferably arranged such that for each column or group, the same number n magnetic elements 24 are arranged on the circumference and in rows extending parallel to the axis, and / or specifically arranged such that when these magnetic elements are unfolded on the substrate 02, they correspond to the pattern of the primitive 03 on the substrate 02 with an applied magnetic field, provided that the substrate position and the roller angle position along the conveying direction T are correctly aligned. The row or column arrangement should also be understood to mean a corresponding grid or matrix arrangement, such that these arrangements are slightly offset from each other in the axially parallel direction, if necessary, partly for correction or adjustment purposes. The n magnetic elements 24 arranged sequentially in columns or groups are then arranged sequentially in the circumferential direction, for example, at least in such a way that these magnetic elements at least overlap as they roll along the circular circumference and / or, even if they may be slightly offset from each other for correction or adjustment purposes, are in the same column of print 09 of the substrate 02 to be processed. Minor mutual offsets that may be present in the circumferential direction also apply to the axially parallel arrangement.

[0066] By guiding the substrate 02 on the magnetic roller 26 designed in this way, wherein, for example, the first substrate surface points outward during transport on the first roller 26, the alignment or orientation of particles P in the area of ​​the primitive 03 disposed on the printing sheet 09 can be achieved by means of the magnetic element 24, here for example through the substrate 02.

[0067] Here, the number of columns or groups m is, for example, four to eight, particularly five and seven, such as six, and / or the number n of magnetic elements 24 in a column or group is, for example, two to twelve, advantageously five to ten. The magnetic roller 26 or its roller body 29 is preferably designed such that the number m of columns or groups and / or the number n of magnetic elements 24 arranged sequentially in a row or column can vary, for example, within the boundaries mentioned above, to adapt to different requirements.

[0068] Preferably, the magnet element 24 is preferably arranged detachably with or on a corresponding retainer 28, such that the magnet element can be arranged at a defined position on the circumference of the roller 26 in the assembled state, and preferably can be completely removed from the roller 26 and / or can be positioned on the circumference of the roller 26 in the axial and / or circumferential directions.

[0069] For the matrix arrangement described above, the magnetic elements 24 can be arranged and supported on or in the roller body 29 in such a way that the magnetic elements are variably supported on or in the roller body relative to other magnetic elements 24 in the same column or group of magnetic elements 24 in terms of their axial position relative to the single-piece or multi-piece roller body 29. This can be achieved, for example, via axially extending guides on the circumference of the roller body 29, in which the associated magnetic elements 24 are supported indirectly or directly, and can be moved to different axial positions. In principle, such guides can be individually provided for each magnetic element 24 in a row (see, for example, according to...). Figure 11 (As in the embodiment described above), but if necessary, multiple or all of the magnet elements 24 in the same row can be arranged continuously. In this case, the guide portion can be provided on the aforementioned axially extending support element, which carries all the magnet elements 24 in the same row.

[0070] In an advantageous embodiment, the independent axial and / or circumferential positioning of the corresponding row or preferably corresponding column of magnet elements 24, which is necessary to be added to the individual or all of the magnet elements 24 in the row or column, as explained in more detail below—generally and independently of adjacent rows or columns, in the case of rows, in terms of their circumferential position, and in the case of columns described herein, as groups, in terms of their axial position on the magnet roller 26 or roller body 29. For rows grouped as shown here, in particular multiple, preferably all rows, the magnet elements 24 are grouped by row, for example, on an axially extending support element, into groups that can be positioned together in the circumferential direction. In the preferred case of columns grouped as groups, in particular multiple columns, advantageously at least two of at least three columns closest to the end face, and advantageously all columns as groups, are axially movably supported in or on the magnet element carrier 29, in particular the roller body 29.

[0071] In the preferred case of a grouped array, the magnetic elements 24 can be arranged or can be arranged, either indirectly or directly, on a plurality of, for example, a number m of, for example, four to eight, particularly five to seven, for example, six, axially spaced from each other, and preferably partially or entirely axially positionable on the inner body of the drum 32, particularly on the axially extending shaft 32, preferably annular support elements 31, wherein, in or on the annular element 31, there are a plurality of, for example, two to twelve, advantageously five to ten magnetic elements 24 arranged sequentially in the circumferential direction and preferably at least partially or entirely positionable in the circumferential direction (see, for example...). Figure 4 and Figure 5 ).

[0072] In the case of a web-like substrate 02, the magnetic roller 26 can be designed without any holding mechanism acting on the substrate 02 and, for example, with an annular element 31 that is closed in the circumferential direction. For the preferred case here involving a sheet-like substrate 02, a holding mechanism 33, such as a gripper 33 for tensioning strips, is preferably provided on the circumference of the roller 26. The sheet-like substrate 02 to be fed onto the roller 26 is held or can be held within a certain angular range, particularly the angular range, during the rotation of the roller 26, as it is held at its front end by the gripper. Here, the magnetic roller 26, designed in this way, is also used for conveying the substrate 02. Here, the annular element 31, for example, is like... Figure 4 and Figure 5 The circumferential interruption is identifiable in order to accommodate the retaining mechanism 33. Therefore, unless otherwise stated, the term "ring-shaped" load-bearing element or "ring-shaped element" here also includes non-closed, i.e., ring-shaped segmental elements. Figure 5 In, when necessary, a fixing mechanism is used for fixing, such as its, for example, according to Figures 15 to 18 The embodiments are described in connection with and can also be used for Figures 1 to 14 The implementation plan is not shown in detail as described in the document.

[0073] In a particularly advantageous embodiment of the magnetic roller 26, separate structural units 36 are provided for the plurality or all of the magnetic elements 24, which are positioned or can be positioned in a matrix of rows and columns on or in the roller body 29 in the manner described above. These structural units are also referred to below as action units 36, particularly magnetic units 36, each of which includes at least one magnetic element 24 and at least one suction element 34.

[0074] In a particularly preferred embodiment of the device 07 for aligning magnetic or magnetizable particles P, among a plurality of, preferably all m columns of magnetic elements 24, a plurality of, particularly all, arranged sequentially with each other, magnetic elements 24 together with at least one corresponding suction element 34 are assembled in a corresponding structural unit 36 ​​as an action unit 36, and thus can be positioned as a whole and independently of all other such action units 36 and / or can be separated from the roller 26.

[0075] Each actuating unit 36 ​​includes a magnet element carrier 37, on which a magnet element 24 is arranged on or within its outwardly pointing side. At least one suction element 34 may be integrated into the magnet element carrier 37 as part of the magnet element carrier, or arranged as a separate component on the magnet element carrier. Preferably, viewed axially from the roller 26, the actuating unit 36 ​​includes at least one suction element 34 on each side of the magnet element 24. The corresponding suction element 34 includes a plurality of suction openings 42 in its outwardly pointing surface, i.e., towards the outside of the roller 26, and / or at the height of the roller envelope. These suction openings are, for example, provided in suction air channels 39 covering the suction element 34 (see, for example...). Figure 11 A cover element 41, preferably detachably fixed above the suction channel 39. The channel structure, not visible in the drawings, leads from the corresponding suction air channel 39 through the actuating unit 36 ​​to a pipe interface 43 on the bottom side, which is, for example, a recess 43 on the bottom of the actuating unit 36 ​​facing inward toward the inside of the drum (see, for example...). Figure 11 Air can be drawn from the suction opening 42, which is connected via the channel structure and the suction air passage 39, through at least one notch 43 or a conduit interface 43 formed here and assigned to the actuating unit 36.

[0076] The actuating unit 36 ​​can, in principle, be arranged in a matrix, either indirectly or directly, or can be arranged on the cylindrical shell surface 44 of the axially extending drum inner body 32, particularly the shaft 32. The drum inner body or shaft has, for example, radially outward-pointing suction air openings 46 in longitudinal segments that indirectly or directly support the magnet element 24, serving as conduit interfaces 46 for guiding suction air. These suction air openings are connected, for example, via radial through portions 47, such as holes 47, to channels 48, such as suction air channels 48, that extend axially in the shaft 32 and are to be loaded with suction air from at least one drum end.

[0077] When the actuating units 36 are arranged in a matrix directly, i.e., indirectly, or can be arranged on the shell surface 44 of the axially extending inner drum 32 or shaft 32, the actuating units 36 are positioned on the shell surface 44 such that the free cross-section of the pipe interface 43 on the bottom of the actuating unit 36, for example, the notch 43 in the bottom of the corresponding actuating unit 36, overlaps with at least one pipe interface 43 formed by the suction air opening 46 in the shaft 32. Here, the notch 43 forms, for example, a chamber 43 defined by the shell surface 44 on the bottom side, wherein the wall portion completely surrounding the notch 43 forms a sealing surface surrounding the sealed chamber 43 together with the area opposite the shell surface 44 of the shaft 32 in the foot region of the actuating unit 36. In this embodiment, air is drawn from the suction opening 42 in the relevant suction element 34 via the suction air channel 39 and channel structure, via the pipe interface 43 formed by, for example, a notch 43 in the actuating unit 36, and at least one suction air opening 46 and suction air channel 48 in the inner drum body 32. For such an embodiment, a suitable fixing mechanism, for example in the form of a clamping connector or screw connector, is provided to secure the corresponding actuating unit 36 ​​to the housing surface 44.

[0078] However, in the particularly advantageous embodiment shown here, the action units 36 are not directly arranged or can be arranged on the segments of the drum body 32 or shaft 32 with the air suction openings 46, but rather multiple or preferably all of the action units 36 for the corresponding columns are arranged as groups or can be arranged on the aforementioned, in particular, annular support elements 31, such as annular elements 31, wherein, advantageously at least on the outermost support elements 31 on both sides, but preferably all the support elements 31 carrying the corresponding groups or columns of action units 36 can vary in their axial position on the drum body 32 or shaft 32.

[0079] Preferably, the annular support element 31 or the annular element 31 has conduit interfaces 49; 51 assigned to the respective support element 31 on the side pointing inward, that is, in the assembled state, towards the inner drum body 32 or shaft 32, and on the side pointing outward. It also has a channel structure for connecting one or more inner conduit interfaces 49 to one or more outer conduit interfaces 51 to conduct air suction. Here, on the inner side, as a conduit interface 49, a recess 49 is provided in the wall 52 pointing towards the inner drum. This recess is connected to the outer conduit interface 51 via one or more channels 53 extending in the annular element 31, and is maintained by, for example, radially extending through portions 54, such as holes 54. Although the openings of each hole 54 are also guided outward to, for example, the recess 51 constituting the outer conduit interface 51 in the outward-pointing wall 56 of the support element 31.

[0080] The annular element 31 is positioned on the shell surface 44 in such a manner that the free cross-section of a corresponding conduit interface 49 on the inner side of the annular element 31, for example, the aforementioned recess 49, overlaps with at least one suction air opening 46 in the shaft 32 or the inner drum 32. Here, the recess 49 is formed, for example, in a cavity 49 defined by the shell surface 44 on the bottom side, and the surface of the inwardly pointing wall 52 of the annular element 31 located outside the recess 49, together with the opposing region of the shell surface 44, forms a sealing surface for sealing the cavity 49. Similarly, for example, the actuating unit 36 ​​is positioned on the outwardly pointing side of the annular element 31 in such a manner that the free cross-section of the recess 43 at the bottom of the actuating unit 36, for example, overlaps with at least one external conduit interface 51 on the outwardly pointing side of the annular element 31. Here, the notch 43 forms a chamber 43, for example, defined by the outer wall 56 on the bottom side, wherein the wall portion completely surrounding the notch 43, together with the area opposite the wall 56 of the supporting element 31 in the foot region of the actuating unit 36, forms a sealing surface of the sealed cavity 43. In this embodiment, air is conveyed from the suction opening 42 in the associated suction element 34 via the suction air passage 39 and the passage structure, via, for example, the pipe interface 43; 51 formed by overlapping notches 43 and 51, the passage structure of the annular element 31, the pipe interface 49 formed by, for example, the notch 49 on the inner side of the annulus, and at least one suction air opening 46 and suction air passage 48, and is drawn from a suction air source located outside the roller 26, for example, via a rotating through portion.

[0081] The corresponding patterns of the air suction openings 46 or pipe interfaces 46 on the inner body of the roller 32 and the positions and shapes of the (multiple) pipe interfaces 43 or (multiple) recesses 43 that cooperate with each other in the bottom region of the actuating unit 36 ​​associated with the first variant (without the supporting element 31) are preferably coordinated with each other, such that the continuous positioning of the actuating unit 36 ​​in the circumferential direction is achieved in at least one adjustment range of the two air suction openings 46 spaced apart in the circumferential direction on the shaft 32 in the following manner: In the first variant, at each position in the relevant adjustment range, at least one of the air suction openings 46 or pipe interfaces 46 is completely covered by the lower side of the actuating unit 36, while at the same time, the opening cross-section of at least one air suction opening 46 or pipe interface 46 at least partially overlaps with the pipe interface 43 or recess 43 on the bottom side of the actuating unit 36.

[0082] In relation to the second variant (including the support element 31), the corresponding patterns of the suction air opening 46 or pipe interface 46 on the inner drum 32, the positions and shapes of the cooperating pipe interfaces 49 or recesses 49 on the inner side of the support element 31, and the positions and shapes of the cooperating pipe interfaces 51; 43 or recesses 51; 43 on the outer side of the support element 31 on one side and in the bottom region of the action unit 36 ​​on the other side are preferably coordinated with each other, such that: the continuous positioning of the action unit 36 ​​of the second variant on the outer side of the support element 31 in the circumferential direction within the adjustment range of at least two pipe interfaces 51 or recesses 51 is achieved in such a way that at least one pipe interface 51 or recess 51 on the outer side of the support element 31 is completely covered by the lower side of the action unit 36, while at the same time the opening cross-section of at least one pipe interface 51 or recess 51 on the outer side of the support element 31 at least partially overlaps with the pipe interface 43 or recess 43 on the bottom side of the action unit 36.

[0083] Related to the variable positioning, in a particularly advantageous improvement, conduit interfaces 46; 51 are provided on the bearing element 31 in more locations in the axial direction and / or circumferential direction of the inner drum 32 than are required for a single particular operating configuration. However, in order to prevent spurious air from being drawn into the conduit interfaces 46; 51 that are not covered by the actuating unit 36 ​​or the annular element 31, a closing mechanism 57; 58 is provided, by which the supply through-holes 47; 54 of the conduit interfaces 46; 51 that are not covered by the actuating unit 36 ​​or the bearing element 31 can be selectively closed on the inner drum 32 and / or the outer circumference of the bearing element 31. Here, in the simplest case, a plug can be inserted into the relevant through-hole 47; 54 for closure, and can be removed from the through-hole again if necessary.

[0084] Preferably, in the through-holes 47 and 54 to be selectively closed, a closing mechanism 57 or 58, designed as a valve 57 or 58, is provided, wherein the closing mechanism is inserted into or can be inserted into the closed position in the through-hole 47 or 54 that is not covered by or is only partially directly covered by the actuating unit 36 ​​or the supporting element 31, while at least some of the through-holes 47 or 54 are inserted into or can be inserted into the open position by the pipe interfaces 46 or 51 that are completely covered by the actuating unit 36 ​​or the supporting element 31.

[0085] A preferred embodiment of this closure mechanism 57; 58 is in the form of a valve 57; 58, which can be selectively moved to an open or closed position without removal or insertion. In an advantageous embodiment, particularly the through portion 47; 54 designed as a hole 47; 54, it is connected only in its net cross-section to the channels 48 and 53 of the roller inner body 32 or the support element 31 on the suction side. The valve 57; 58 is formed, for example, in a particularly advantageous embodiment, by a sleeve 57; 58 having a recess 61 in a side wall portion 62 on one side, which opens in a rotating position representing the open position to the path of the channel 48; 53 connected in the suction side of the roller inner body 32 or the support element 31, while in different rotating positions, the connection between the recess and the associated channel 47; 54 is interrupted by the sleeve wall portion. In an advantageous embodiment, the sleeve-shaped valves 57; 58, for example in a further outward segment at least in the assembled state, have an operating interface 63 that can engage with a tool 59, through which the valves 57; 58 can be rotated between an open and closed position by means of the corresponding tool 59, particularly without having to be removed. Serving as the corresponding tool interface pairs 59, 63 are, for example, polygonal keys 59 and inner circumferential segments 63 within the sleeves 57; 58 designed as inner polygonal portions 63 for use.

[0086] In the improvement of roller 26, a support element 66 is provided between each pair of structural units or functional units 36, and the support element has a support surface 67; 68 at the height of the roller envelope end for supporting the substrate 02 fed via roller 26. Here, the support surface 67 can be the outwardly pointing cylindrical surface 67 of the annular support disk 64, or the outwardly pointing surface 68 of the support plate 71 arranged on the support disk 69, made of synthetic material or metal. Here, the term "circular" should also include the support disk 69, which is not completely closed in the circumference, that is, the annular segment.

[0087] In a particularly advantageous embodiment for securing the magnet element 24 to the roller 26, multiple or all of a group of magnet elements 24 are supported on a common annular support element 31 and can be positioned circumferentially on the support element 31. The magnet element 24 or the magnet element carrier 37 supporting the magnet element 24, viewed axially, has at least one clamping element 72; 73 on both sides, such as clamping rods 72; 73. The clamping elements, at their effective clamping ends, are respectively engaged below on the corresponding end faces of the annular support element 31 in the assembled state, extending circumferentially and pointing inwards, i.e., with their surface normal pointing inwards towards the inside of the roller, and / or preventing the magnet element 24 or the magnet element carrier 37 from radially displaced by cooperating with the clamping element 72; 73 in the clamping position. Here, in a particularly advantageous embodiment, the stop surface 74; 77 is an inwardly oriented surface of a groove 76; 78 extending circumferentially in the bearing element 31 on the end side, into which the clamping element 72; 73 engages effectively, for example, with a claw or clamp-like end. Here, the circumferentially extending stop surface 74; 77 or groove 76; 78, in addition to those preferably extending over the entire angular range or circumference, or those extending through the relevant arc segment as shown, also includes stop surfaces 74; 77 or grooves 76; 78 that continue in multiple arc segments and are interrupted if necessary. However, the latter limits the variability of the circumferential positioning. In addition to the strictly radially inward-pointing surface, the "inward-pointing" surface here also refers to the surface inclined to it, whose surface vector converges into the interior of the roller, but preferably as a circumferential surface, pointing towards the roller axis at the same location for each end face, and providing a stop for the clamping elements 72; 73 to prevent radial movement. In advantageous embodiments, particularly to increase the stability of the support, there are two circumferentially spaced clamping elements 72; 73 on each side, with two claws that engage with the bearing element 31 at intervals.

[0088] Even though the clamping elements 72; 73 can theoretically be designed as single-arm rods 72; 73, they are preferably implemented as double-arm rods 72; 73 that are pivotable around an axis 81, such as a pivot axis 81, supported on the magnet element 24 or its retainer 28 or the structural unit 36 ​​including the magnet element 24. The arm of the rod closer to the center of the roller has claw-like or clamp-like parts that cooperate with the stop surface 74; 77, and the outermost arm is used for operation. Preferably, the clamping elements 72; 73 are self-locking, for example by a spring element 79, particularly a compression spring 79, effective between the rod 72; 73, especially the outermost arm, and the magnet element 24 or retainer 28 or structural unit 36, such that the clamping elements are in the clamped position and hold the magnet element 24 or retainer 38 or structural unit 36 ​​on the bearing element 31 in a static state, i.e., without operation. The described fixing device, together with the assembly auxiliary mechanism 97 explained in more detail below, provides specific advantages.

[0089] The fixing types shown above, utilizing fixing mechanisms 72; 73, 74, 77, are, in principle, independent of, but advantageously related to, the above-described structural unit 36, particularly the actuating unit 36, and / or the axial mobility and / or circumferential mobility of the individual magnetic elements 24 implemented below. The connection can be externally separated by clamping elements 72; 73 without removing the associated magnetic element 24. Through their mutual adjustability, separation can occur to such an extent that the associated magnetic element 24 can be positioned circumferentially overcoming any remaining frictional forces, without the risk of tipping over, slipping, or falling.

[0090] In example Figure 11 , Figure 12 and Figure 14 A portion of the diagram shows or indicates a line 84 that is optionally provided to the motor in the case where the magnet 27 in the magnet element 24 is designed to be rotatable by the motor.

[0091] As already combined above Figure 2 and Figure 3As described, the corresponding columns of printed subjects extending in the circumferential direction of the printing cylinder 14 refer to the same column of printed sheets 09 arranged sequentially or potentially arranged on the substrate 02. Ideally, these printed sheets 09 are aligned in a straight line along the transport direction T and have a uniform width. In contrast, if, for example, the substrate 02, on which the pattern of the printed sheets 09 may have been previously printed, undergoes trapezoidal deformation during upstream processing or due to other mechanical or physical stresses, such altered geometry can be overcome by correspondingly changing the arrangement of the printed subjects 18 on the printing cylinder 14. Then, the individual columns of printed subjects 18 are not strictly aligned in a straight line in the circumferential direction, but rather, for example, partially located on a spiral line slightly inclined towards the circumference (e.g., for better perception). Figure 3 (Enlarged view shown). Here, the width of the printed sheet 09 on the substrate 02 is increased, for example, when the substrate is segmented or when a single sheet of substrate is fed in the opposite direction from the front end to the rear end 02, or, for example, at the beginning of the printing press 01. However, there may be other reasons that cause a shift in the relative position between the axial position and the target position of the individual magnetic elements 24, thereby affecting the effect of this shift on the substrate 02, such as a slight misalignment of the axial positioning of the magnetic elements 24 on the rollers 26, etc.

[0092] In principle, regardless of the arrangement of the magnet elements 24 in the aforementioned structural unit 36 ​​and / or the implementation of the aforementioned fixing device and / or the adjustability in the circumferential direction, but preferably related to one or more of the aforementioned advantageous embodiments, in a particularly advantageous embodiment, at least one magnet element 24 in each of at least a plurality of, preferably all, columns or groups of magnet elements 24 extending in the circumferential direction is supported directly or indirectly, at least axially adjustable or movably, on the roller body 29 of the magnet roller 26, independently of at least one other magnet element 24 in the same column or group. Preferably, a plurality of, advantageously at least all, except one, and particularly advantageously all magnet elements 24 in the same group are supported axially movably, independently of the other magnet elements 24 in that group, and / or at least two near the end sides of at least three columns or groups, particularly a plurality of, advantageously all except one or all magnet elements 24 in all columns or groups, are supported independently of the other magnet elements 24 in the corresponding column. Thus, the random or systematic relative offset of the aforementioned individual magnet elements 24 can be readjusted or corrected in the axial position. In particular, in relation to the aforementioned indirect support scheme of the magnet element 24 on the magnet element carrier 37, the magnet element carrier is directly or indirectly mounted on the roller body 29 via the aforementioned support element 31. This axially adjustable magnet element 24 is preferably axially adjustable relative to the associated magnet element carrier 37. Alternatively or preferably additionally, multiple or all of the magnet elements 24 on the roller body 29, or particularly the magnet element carrier 37, can be individually adjusted in the circumferential direction.

[0093] In a particularly advantageous embodiment of a roller 26 having n×m magnetic elements 24 arranged in a matrix, at least two or all of the magnetic elements 24 arranged sequentially in the same column are supported on or at the aforementioned common support element 31, and can vary their axial position in or above the roller 26 together with the support element and independently of adjacent groups. Furthermore, these or preferably at least two or preferably all of the magnetic elements 24 in each column are supported on corresponding magnetic element carriers 37 that are circumferentially independent of each other on the common support element 31 and / or separable from the support element 31, and are axially adjustable on the associated magnetic element carriers 37 within an adjustment range of, for example, at least 1 mm in total, preferably at least 2 mm.

[0094] In this embodiment, the axially movable magnet 27 or retainer 28 is indirectly carried via an associated magnet element carrier 37, which carries a corresponding, at least axially movable magnet element 24 and preferably is itself variably positioned on the annular element 31 in the circumferential direction.

[0095] In a simple and less complex implementation (see, for example) Figure 10 The corresponding magnet element 24 or retainer 28 is secured in or on the magnet element carrier 37 or its retainer 28 by a fixing mechanism 83 (e.g., screw 83) in such a way that, after at least partial loosening of the fixation, for example by at least partially loosening the screw 83 using a suitable tool, the magnet element 24 or retainer 28 is separated to a degree that allows axial movement at least within a relevant adjustment range on the magnet element carrier 37. For example, the fixing mechanism 83, designed as a screw 83, can be achieved, for example, by a notch designed as an elongated hole 82 in the bottom region of the retainer 28 that receives the magnet element 24 after it has been removed.

[0096] However, in contrast to, for example, purely manual and / or tool-free movement, the axial movement or adjustment of the magnet element 24 or the retaining element 28 included therein is preferably performed via mechanical adjustment mechanisms 86, 87, 89, particularly including transmission devices.

[0097] Although the adjusting mechanisms 86, 87, 89 that cause axial movement can be implemented by any suitable mechanism or transmission, in the illustrated and particularly advantageous case, these adjusting mechanisms include transmissions, particularly eccentric wheel drives, that indirectly or directly convert the rotational movement of the magnet element 24 or the holder 28 supporting the magnet element 24, especially on the input side, into linear motion. These drives convert the rotational movement of the eccentric wheel 86 (which is formed, for example, by an eccentrically mounted shaft segment 86) into the axial linear movement of the carrier element 87 supporting the magnet element 34 or its holder 28, which is indirectly or directly and effectively connected to the working surface on the eccentric wheel housing side and is linearly movable and supported on or on the magnet element carrier 37. Here, the eccentric wheel 86 is preferably operated radially relative to the roller 26 along its axis of rotation and / or indirectly or directly from the outwardly pointing roller side. For this purpose, for example, an operating interface 88, such as an inner polygonal portion 88, is provided in the region surrounding the eccentric wheel 86 or in the region of the outwardly extending shaft 89 at its outwardly pointing end. This operating interface can be operated by means of a suitable tool, here for example a polygonal key, and is particularly pivotable. As an alternative to the eccentric wheel 86, which is radially arranged relative to the axis of rotation, a tangential position or a position parallel to the tangent is also considered. Here, the eccentric wheel can be operated from the outside, for example, from the side pointing in the circumferential direction or via an angular transmission device.

[0098] The axial adjustment range, viewed from the center position, is, for example, at least ±1.0 mm (i.e., at least 2 mm of total adjustment travel), preferably at least ±1.2 mm, for example ±1.5 mm.

[0099] In the above-described embodiment of the actuating unit 36 ​​including at least one suction element 34, in one embodiment variation, at least one suction element 34 can move axially on the magnet element carrier 37 together with the magnet element 24. Here, the corresponding suction air conduction can be provided, for example, by a relatively movable sealing surface or a flexible conduit.

[0100] The relative positions of the individual magnet elements 24 in the circumferential direction of the roller 26 and the target positions of the magnet elements on the substrate 02 may also be offset in the conveying direction T. This may be due to various reasons, such as the limited feasibility of rough and / or manual pre-positioning on the roller body 29 or especially on the carrier element 31 that is set when necessary.

[0101] In principle, independent of the arrangement of the magnet elements 24 in the aforementioned structural unit 36 ​​and / or independent of the embodiments from the aforementioned fixing device and / or independent of the aforementioned axial adjustability, but preferably associated with one or more of the aforementioned advantageous embodiments, in a particularly advantageous embodiment, at least one magnet element 24 in each of at least a plurality of, preferably all axially extending rows, is independently of at least one other magnet element 24 in the same row, and is adjusted or movable at least in the circumferential direction, indirectly or directly supported on the roller body 29 of the magnet roller 26. Preferably, in the plurality of rows, particularly all rows, a plurality of, advantageously at least one except one, magnet elements 24 in the same row, but particularly advantageously all magnet elements 24, are axially movable independently of the other magnet elements 24 in that row.

[0102] Alternatively or otherwise, in a particularly advantageous embodiment having a roller 26 with magnetic elements 24 arranged in a similar matrix manner, at least two magnetic elements 24 arranged sequentially in the same column are arranged on magnetic element carriers 37 that are different from each other and can be independently positioned on the roller 26 in the circumferential direction. At least two, particularly all, of the magnetic elements 24 arranged on their respective magnetic element carriers 37 are adjustablely supported relative to the magnetic element carriers 37 that support the magnetic elements 24 in the circumferential direction within a total adjustment range of at least 1 mm, preferably at least 2 mm. This preferably applies to at least two or all of the magnetic elements 24 in all columns.

[0103] In contrast to, for example, purely manual and / or tool-free movement, the movement or positioning of the magnet element 24 or the retaining member 28 surrounded therefrom in the circumferential direction is preferably achieved via mechanical, in particular, adjusting mechanisms 91, 92, 94 including transmission devices.

[0104] In this way, circumferential adjustment or adjustment movement, in addition to movement along an arc-shaped path, should also explicitly include movement along a linear trajectory extending tangentially or parallel to the tangent within the relevant adjustment range on the circumference. Similar to the drum diameter, this is typically a very small relevant adjustment range, so the linear adjustment stroke usually does not lead to unacceptably large imaging errors.

[0105] Although the adjusting mechanisms 91, 92, 94 that cause circumferential movement can be implemented by any suitable mechanism or transmission, in the illustrated and particularly advantageous case, these adjusting mechanisms include a transmission mechanism, particularly an eccentric wheel drive mechanism, that converts rotational motion, especially on the input side, for example indirectly or directly, into linear motion, particularly of the magnet element 24 or the holder 28 supporting the magnet element 24. The eccentric wheel drive mechanism converts the rotational motion of, for example, the eccentric wheel 91 formed by the eccentrically mounted shaft segment 91, into linear motion, for example, of the slide 92 in or on the magnet element carrier 37, which indirectly or directly supports the magnet element 24 or its holder 28, through indirect or direct engagement with the working surface on the eccentric wheel housing side and is capable of linear motion. In the above sense, the linear motion should be both based on work preferably in a straight line and also possibly in an arc. The eccentric wheel 91 preferably extends radially relative to the roller 26 with its axis of rotation and / or can be operated from the outwardly pointing roller side. For this purpose, for example, the eccentric wheel 91 or the outwardly extending shaft 94 may have an operating interface 93, such as an inner polygonal portion 93, in its outwardly pointing end region. This operating interface can be operated, in particular, by means of a corresponding tool, here for example a polygonal key, which is pivotable. As an alternative to the eccentric wheel 91, which is radially arranged relative to the axis of rotation, a tangential position or a position parallel to the tangent is also considered, in which the eccentric wheel can be operated from the outside, for example, from a circumferentially pointing side or via an angular transmission device.

[0106] The adjustment range in the circumferential view taken from the center position is, for example, at least 100 μm ± 1.0 mm (i.e., a total adjustment stroke of at least 2 mm), preferably at least ± 1.2 mm, for example ± 1.5 mm.

[0107] In the above-described embodiment, which includes an action unit 36 ​​comprising at least one suction element 34, in one variation, the at least one suction element 34 can move circumferentially together with the magnet element 24 on the magnet element carrier 37. Here, a corresponding suction air passage may be provided, for example, by means of a relatively movable sealing surface or a flexible conduit.

[0108] Regarding the axial and adjustable properties of the magnet element 24 on the corresponding magnet element carrier 37 in the circumferential direction, the two slides 87; 92 can be arranged indirectly or directly in a cross-shaped guide configuration, stacked on top of each other and / or piled on top of each other.

[0109] The positioning of the associated magnetic element 24 in the axial and / or circumferential directions can be achieved in one of the above-described embodiments by a remotely controlled drive device, such as an eccentric wheel 86; 91, or by an electric motor that drives a reduction gear transmission.

[0110] In principle, regardless of the aforementioned adjustability of the magnet element 24 in the structural unit 36 ​​and / or axially and / or circumferentially in the manner described above, but preferably associated with one or more of the aforementioned advantageous embodiments, an assembly auxiliary mechanism 97 is provided. This assembly auxiliary mechanism can be placed on the magnet element 24 or the magnet element carrier 37 supporting the magnet element 24 or on the structural unit 36 ​​including the magnet element 24, and allows the clamping seats or clamping connections between the clamping elements 72 on both sides and the carrier element 31 to be separated. Preferably, the clamping performed by the assembly auxiliary mechanism 97 or the drive mechanism 102 included in the assembly device 97 and particularly manually operable, not only allows the magnet element 24 or the structural unit 36 ​​including the magnet element to be separated and opened to the extent that it can be removed from the carrier element 31, but also, in an intermediate position, in terms of the strength of the clamping or the degree of opening, the magnet element 24 or the structural unit 36 ​​is not yet completely free, but can be separated to the extent that it is circumferentially positioned on the carrier element 31. Here, the degree of opening can be adjusted so that there is still a tactile contact between the clamping elements 72 and 73, but positioning can be achieved when any small frictional force that may still exist is overcome. For this purpose, the operating arm 98 can be positioned, preferably continuously, by the drive mechanism 102, between the clamping position where the clamping elements 72 and 73 generate a full clamping force on the carrier element 31 and the position where the clamping is separated from the magnet element 24 or the magnet element carrier 37 carrying the magnet element can be removed from the carrier element 31.

[0111] To enable simple operation from the outside of the roller and / or particularly to achieve such limited opening, the assembly auxiliary mechanism 97, in addition to the base 104 which can be placed on the associated magnetic element 24 or the associated structural unit 36, also includes operating arms 98 on both end faces 98. These operating arms extend radially to both end faces of the magnetic element 24 or structural unit 36 ​​and are effectively connected to, or can be connected to, the clamping elements 72; 73 on the said or corresponding end faces to operate the clamping elements. Furthermore, the assembly auxiliary mechanism 97 includes the aforementioned drive mechanism 102, particularly the adjustment drive 102, by which the operating arms 98 can be moved to a first position in which, for example, the operating arms 98 overcome the aforementioned spring force to open the clamping elements 72; 73 to such an extent that the magnetic element 24 or structural unit 36 ​​can be mounted on or completely separated from the support element 31, until a second position is reached where the clamping elements 72; 73 generate a full clamping force on the support element 31, without the operating arms 98 absorbing a force opposite to the clamping force. Preferably, all positions therebetween can be adjusted by a drive device.

[0112] In the above-described configuration of clamping elements 72; 73 as double-arm levers 72; 73, the operating arms 98 are respectively indirectly or directly engaged with the lever arm located closer to each other, and are moved toward each other, i.e., toward the bearing element 31, by the drive mechanism 102 to open the clamping connection, and can be moved apart again to close the clamping connection. In the case of two clamping elements 72; 73 arranged adjacent to each other, these clamping elements are interconnected, for example, by a connecting member 96 connecting the two outermost lever arms, such as a connecting shaft 96 supported in the two outermost lever arms, which also serves as the point of action for the corresponding operating arm 98. In the case of each clamping element 72; 73, the corresponding operating arm 98 can act indirectly or directly on the outermost lever arm of the relevant clamping element 72; 73.

[0113] In principle, any driving device can be considered as the drive mechanism 102, by which two opposing operating arms 98 can move toward and away from each other in the aforementioned sense. However, a drive mechanism with a self-locking transmission is preferred here, such as that provided by a threaded drive mechanism, for example. Thus, the drive mechanism 102 includes, for example, a first portion 99 that carries the operating arm 98 on one side, and a drive device portion 99, such as a second bushing 101, that carries the operating arm 98 on the other side and is torsionally but axially movable relative to the first portion 99, and a threaded drive mechanism internally configured to allow the components carrying the operating arm 98 to move apart or closer to each other via a threaded spindle (not shown) on one side and rotatable via a manual operating interface 103, such as a rotary handle 103, and internal threads on the other portion of the two portions 99; 101 of the drive mechanism 102.

[0114] In embodiments of the magnetic roller 26 having variable, particularly annular, support elements 31 in their axial positions, these axially positionable support elements or annular elements 31 can, in principle, be fixed in any manner that allows for a separable connection between the respective support element 31 and the inner body of the roller 32 and for relative axial movement. In particular, such a connection is especially advantageous in which, in the region where the pipe interfaces 46 and 49, which mate on the inwardly pointing wall 52 of the annular element 31, conduct air-suction pipe interfaces, the surfaces surrounding these pipe interfaces 46 and 49 are pressed together by connectors, such that these pipe interfaces form a sealing surface that prevents air from passing through and is as closed as possible.

[0115] In principle, regardless of the arrangement of the magnet element 24 in the aforementioned structural unit 36 ​​and / or the aforementioned axial adjustability and / or circumferential adjustability and / or the aforementioned clamping direction of clamping the magnet element 24 or the retainer 29 or the structural unit 36, but preferably associated with one or more of the aforementioned advantageous embodiments, in a preferred embodiment for fixing the annular element 31, a clamping device is provided for fixing, by which the bearing element or the annular element 31 can be clamped onto the inner drum body 32, which is specifically designed as a shaft 32, in such a way that the aforementioned sealing surface can be formed. Here, the embodiment of the annular element 31, which is actually designed as annular segments, is helpful, such that the inner diameter of the annular element 31 within the segment angle range is slightly larger than, for example, 2 to 50 μm, particularly 5 to 20 μm, than the outer diameter of the inner drum body 32, which is designed as a shaft 32 within the corresponding angle range.

[0116] In the case of the already explained roller 26 with rows of magnetic elements 24, multiple or all rows of magnetic elements 24 are arranged as corresponding groups on corresponding support elements 31. The corresponding support elements 31 are here specifically designed as annular segments, i.e., annular support elements 31 that are interrupted within a certain angular range, and have front and rear ends 106 and 107 with respect to the production rotation direction D. Here, the production rotation direction D is defined, for example, by the arrangement of the tensioning strips mentioned above, which have grippers 33 at the front end 106 of the annular segment 31 that open and close during operation to pick up single sheets of substrate paper 02. The corresponding support elements 31 are detachably arranged on the inner body 32 of the roller 26, and their axial position can be changed in the detached state. To fix the bearing element 31 to the desired position on the inner drum body 32, with the bearing element 31 assembled on the inner drum body 32, a tensioning device 108 is provided on the inner drum body 32 in the region between the front and rear ends 106; 107 of the annular segment bearing element 31. A clamping device applies a circumferentially directed force towards each other to the two circumferentially spaced ends 106; 107 by an adjusting mechanism 109 included in the tensioning device 108. Thus, the annular segment annular element 31 is pressed against the housing surface of the shaft 32 with a slightly elastic deformation when necessary, thereby achieving the aforementioned sealing surface.

[0117] Here, the tensioning device 108 is specifically engaged at both ends 106; 107 of the bearing element 31, and can be changed circumferentially by the adjusting mechanism 109 included in the tensioning device 108 with respect to the effective length of the engagement on both sides.

[0118] Preferably, the tensioning device 108 includes a tensioning strip 111 arranged on the circumference of the inner drum 32 in the region between the front and rear ends 106 and 107 of the bearing element 31 and fixed at least on one side to prevent relative movement in the circumferential direction relative to the inner drum 32. However, preferably, the tensioning strip 111 and the inner drum 32 are fixed by a pair of stops effective in both rotational directions to prevent torsion in the circumferential direction. This fixing can be achieved, for example, by a corresponding offset of the inner circumference of the annular element 31 and the outer circumference of the inner drum 32 acting as a pair of stops. However, in the advantageous embodiment shown here, this relative anti-torsion device is provided by a so-called mating element 112, commonly referred to as a key 112, which, for example, is anchored in the shell surface of the inner drum 32 and precisely mates with a notch, particularly a groove, in the tensioning strip 111, and vice versa. Here, the advantage of the mating element 112 with the correspondingly mating notch is that the inner drum 32 can be easily radially fitted with the tensioning strip 111. In addition to anti-torsion protection, a fixing mechanism (not shown), such as screws, can be provided to fix the tensioning strip 111 radially to the inner body 32 of the drum.

[0119] Preferably, when the tensioning device 108 is in a relaxed state, i.e., in a powerless state, either directly or after the aforementioned fixing mechanism has been released, and when the bearing element 31 is still on the inner body 32 of the drum, the tensioning strip 111 can be removed from the inner body 32 of the drum. Alternatively, when the annular element 31 has been positioned on the inner body 32 of the drum, the tensioning strip can be inserted into the inner body 32 of the drum in the interrupted area.

[0120] In an advantageous embodiment, the tensioning device 108 is statically engaged in a fixed relative circumferential position between the tensioning strip 111 and the associated ends 107; 106, preferably on the rear end 107, and on the other end, preferably on the front end 106, in one of the ends 107; 106, in a variable relative circumferential position between the tensioning strip 111 and the associated other end 106; 107, by means of the adjusting mechanism 109. This means that, for example, by adjustment, the engagement point, and consequently the associated end 106; 107, can be moved closer to the tensioning strip 111, or can be returned to the initial position, for example, by the elastic restoring force in the annular element 31.

[0121] For static engagement, effective circumferential locking is provided, for example, by a pair of stops acting between the relevant ends 107; 106 and the tension strip 111. The stops 106, 107 are formed, for example, by the opposing faces of hook-shaped protrusions on the tension strip 111 and hook-shaped protrusions 117 embedded therein, acting as suspension edges 117 on the ends 107 of the annular element 31.

[0122] In a preferred embodiment, the engagement position of the adjusting mechanism 109 at the relevant ends 106; 107, viewed circumferentially, is located along a straight line or with at least a deviation of no more than 5° at a point on the circumference of the inner drum 32 where the tangent to the adjusting mechanism 109 extends parallel to the adjusting direction of the adjusting mechanism 109. This small adjustment range ensures that the ends 106; 107 pulled by the adjusting mechanism 109 are, in principle, subjected to a tangential force, thereby eliminating radial deformation that could occur due to a force deviating from the tangential direction.

[0123] Although it can be implemented in another manner in principle, the adjusting mechanism 109 is preferably formed directly in the end region of the annular element 31 by means of threaded drives 113, 114 supported on the tensioning strip 111 and, for example, manually operable, such as screws 113, particularly bolts 113, and corresponding threads 114, such as threaded sleeves 114, rotatably supported in the tensioning strip 111, or preferably in a tensioning mechanism 116 engaged with the annular element 31 and whose position can be changed along the adjusting direction of the threaded drives 113, 114, wherein the tensioning mechanism 116 is designed and arranged to cooperate with the associated end 106 by means of circumferentially acting stop faces. The stop pairs are formed on the annular element 31, for example, by means of the opposing faces of the tensioning mechanism 116 designed to pull the tensioning strip 116 and the hook-shaped protrusions 118 accommodating the tensioning strip 116, for example, as suspension edges 118.

[0124] In an advantageous improvement, viewed from a cross-section extending perpendicular to the roller axis, the tensioning strip 116 is at least partially submerged in the tensioning strip 111 in a notch 122 or more corresponding in shape and cross-section, thereby ensuring the movement of the tensioning strip 116 in the adjustment direction guided by the notch 122.

[0125] In principle, for each annular element 31 to be fixed, a corresponding tensioning strip 111 and / or a corresponding assigned tensioning mechanism 116 can be provided. However, in a preferred embodiment, viewed along the axial direction of the roller 26, tensioning strips 111 are provided on multiple or all of the bearing elements 31 arranged on the inner body of the roller 32, and / or tensioning mechanisms 116 extending along the axial direction of the roller 26 on multiple or all of the bearing elements 31 arranged on the inner body of the roller 32. Here, a fixed numerical or spatial allocation scheme for multiple of the adjusting mechanisms 109 or threaded drive devices 113, 114 assigned to one annular element 31 is no longer necessary. Here, regardless of the number and position of the annular elements 31, a fixed device can be maintained, with a continuous or possibly partial tensioning device 108 cooperating with the annular element to clamp it. In particular, one of the above would also be a tensioning device 108 without tensioning strip 116, i.e., since the adjustment mechanism 109 directly engaged in the annular element 31 is not well suited for continuous positioning work, as the feasible position depends on the hole spacing of the threaded rod 113.

[0126] The tensioning strip 111 can be arranged and designed in such a way that it simultaneously forms the bottom carrier of a single or multiple tensioning strips. Here, for example, the bearing 121 that carries the gripper shaft 119 is arranged on the tensioning strip 111 that forms the bottom carrier.

[0127] In a preferred embodiment, such roller 26 is an integral part of the aforementioned machine 01 and / or particularly advantageously associated with the axial and / or circumferential adjustability of each magnet element 24 on the corresponding magnet element carrier 37 and / or with the aforementioned actuating unit 36 ​​having the corresponding magnet element or suction element 24; 34 constituting and / or with one or more schemes for clamping each magnet element 24 or its holder 28 or magnet element carrier 37 on the annular element 31.

[0128] List of reference numerals

[0129] 01 Machines used to generate optically variable primitives, printing presses, securities printing presses

[0130] 02 Substrate, Printing Material, Printing Material Segments, Printing Material Sheet, Substrate Sheet

[0131] 03 Elements

[0132] 04 Coating equipment, printing mechanism, flexographic printing mechanism, screen printing mechanism 05 - 06 Coating media, printing inks, paints

[0133] 07. Apparatus for aligning magnetic particles in graphic elements; alignment device

[0134] 08 Printed Elements

[0135] 09. Printed sheets, securities, banknotes

[0136] 10 - 11 Printing area

[0137] 12. Feeding device, conveyor roller

[0138] 13. Substrate accumulator, single sheet feeder

[0139] 14. Printing mechanism cylinders, printing plate cylinders, screen printing cylinders 15 - 16. Apparatus for generating optically variable primitives

[0140] 17 Imprinting Cylinders

[0141] 18 Printing elements and printing themes

[0142] 19. Drying and / or curing equipment, radiation dryers, UV radiation dryers, UV dryers, UV-LED dryers

[0143] 20 - 21. Feeding devices, gripper rotating feeders, chain gripper systems

[0144] 22 Product receiving section, stacking and paper receiving device

[0145] 23. Dryer, Radiation Dryer

[0146] 24. Functional elements, components, magnetic components 25 - 26. Alignment device, roller, magnetic roller

[0147] 27 Magnets

[0148] 28. Retaining parts, base

[0149] 29. Roller body

[0150] 30-31 Bearing elements, ring elements

[0151] 32. Drum inner body, shaft

[0152] 33. Maintain the mechanism and gripper.

[0153] 34 Suction Element 35 - 36 Structural units, functional units, and magnet units

[0154] 37. Magnet component carrier

[0155] 38. Housing

[0156] 39. Air Suction Channel 40 - 41 Cover element

[0157] 42 Suction opening

[0158] 43 Pipe joints, notches, chambers 44 Shell surface (belongs to 32)

[0159] 45 - 46 Pipeline interfaces and air extraction openings (belonging to 32) 47. Through section, drill hole

[0160] 48 channels, air suction channel

[0161] 49 Pipe joints and notches 50 - 51 Pipe joints and notches

[0162] 52 wall

[0163] 53 channels

[0164] 54. Through section, drilling 55 - 56 wall

[0165] 57. Closing mechanisms, valves, sleeves

[0166] 58. Closing mechanisms, valves, sleeves

[0167] 59 Tools, Polygonal Wrench 60 - 61 Notch

[0168] 62 Wall section

[0169] 63. Operation interface, inner polygonal part, inner circumference segmentation 64 Support Plate

[0170] 65 - 66 Load-bearing elements

[0171] 67 Supporting surface, surface

[0172] 68 Support surface

[0173] 69 Support level

[0174] 70 - 71 Support plate

[0175] 72 Clamping elements, tensioning strips, rods

[0176] 73 Clamping elements, tensioning strips, rods 74 Stop surface

[0177] 75 - 76 slots

[0178] 77 Stop surface

[0179] 78 slots

[0180] 79. Spring elements, compression springs 80 - 81 Axis, Pivot Axis

[0181] 82 long holes

[0182] 83 Fixing mechanism, screws

[0183] 84 Piping

[0184] 85 - 86 Eccentric wheel and shaft segmentation

[0185] 87 Slide, load-bearing element

[0186] 88. Operation interface, inner polygonal part 89 axis 90 - 91 Eccentric wheel and shaft segmentation

[0187] 92 Slide, load-bearing element

[0188] 93. Operation interface, inner polygonal part 94 axes 95 - 96. Connecting parts, connecting shafts

[0189] 97 Assembly Auxiliary Mechanism

[0190] 98 manipulators

[0191] 99 First component, socket 100 - 101 Second component, socket

[0192] 102 Drive devices, operators

[0193] 103 Operating interface, rotary handle 104 bases 105 - 106 at the front end (belonging to 31)

[0194] 107 at the rear end (belonging to 31)

[0195] 108 Clamping device

[0196] 109 Adjustment Mechanism 110 - 111 tension strips

[0197] 112 Mating components, slide keys

[0198] 113 Threaded rods, screws 114 Threads, thread penetration 115 - 116 Clamping device, traction strip 117. Protruding part, hanging edge

[0199] 118 Protruding part, hanging edge 119 Grab Shaft 120 - 121 bearing

[0200] 122 Notch, notch D Production rotation direction P particles, pigment particles T teleportation direction

Claims

1. A roller (26) for aligning magnetic or magnetizable particles (P) contained in a coating medium (06) on a substrate (02), the roller comprising, in a matrix configuration in a region of its outer circumference, n×m magnetic elements (24) providing a magnetic field, wherein, n, m ∈ N > 1, the magnetic elements are arranged in n rows extending parallel to the axis and m columns extending in the circumferential direction, and the roller has suction elements (34) with outwardly pointing suction openings (42) in the circumferential region, characterized in that, in the multiple or all columns of magnetic elements (24), multiple or all of the magnetic elements (24) arranged sequentially to each other are respectively grouped with at least one corresponding suction element (34) in a corresponding structural unit as an action unit (36), and can be positioned in the circumferential direction as a whole and independently of all other such action units (36). And / or can be separated from the roller (26), in multiple or all columns, multiple or all of the magnetic elements (24) arranged sequentially in the same column are supported as a group on or at a common annular support element (31), wherein multiple or all of the magnetic elements (24) arranged sequentially in the same column are respectively circumferentially positioned, and for each action unit (36), a magnetic element (24) having one or more magnets (27) is provided, and when viewed in the axial direction of the roller (26), suction elements (34) are provided on both sides of the magnetic element (24).

2. The roller according to claim 1, characterized in that, The action unit (36) has at least one pipe interface on its lower side pointing towards the inside of the drum, and the drum interior (32) surrounded by the drum (26) and indirectly or directly carrying the corresponding action unit (36) on its circumference includes multiple pipe interfaces for conducting air suction on its outer side.

3. The roller according to claim 2, characterized in that, The pipe interface on the outer side of the inner drum (32) is formed by one or more openings of the through section that can be selectively closed and / or can be supplied with suction air from the inside.

4. The roller according to claim 2 or 3, characterized in that, The bearing element (31), which has multiple working units (36) on its circumference and is carried by the inner body of the drum (32), has multiple pipe interfaces on its side pointing towards the inside of the drum that cooperate with the pipe interfaces on the inner body of the drum (32) to conduct air suction, and the bearing element has multiple pipe interfaces on its outer side that cooperate with the pipe interfaces of the working units (36) to conduct air suction.

5. The roller according to claim 4, characterized in that, The pipe interface on the outside of the support element (31) is formed by one or more openings of through portions that can be selectively closed, and / or is supplied or can be supplied with suction air from inside the support element, and / or for multiple pipe interfaces not completely covered by the action unit (36) positioned on the support element (31), the through portion leading into the corresponding pipe interface is closed or can be closed by means of a closing mechanism (58) that can be moved away or can be moved from a closed position to a conducting position.

6. The roller according to claim 1, 2 or 3, characterized in that, The action unit (36) supported on the bearing element (31) has at least one clamping element (72; 73) on each side of the magnet element (24) when viewed in the axial direction of the roller (26). The effective end of the at least one clamping element is respectively engaged with one of the stop surfaces (74; 77) below in the assembled state. The stop surfaces extend circumferentially on the two end faces of the annular bearing element (31) and point toward the interior of the roller (26) and / or prevent the structural unit from moving radially out by cooperating with the corresponding clamping element (72; 73) located in the clamping position.

7. The roller according to claim 6, characterized in that, The stop surface (74; 77) is formed by the inner surface of the groove (76; 78) extending circumferentially on the end side of the bearing element (31) and pointing towards the inside of the roller (26), and the clamping element (72; 73) designed as a single-arm or double-arm and / or spring-preloaded rod is embedded in the groove with its effective end for clamping.

8. The roller according to claim 1, 2 or 3, characterized in that, The actuating unit (36) includes a magnet element carrier (37) on which the magnet element (24) is movable relative to the magnet element carrier (37) in the axial direction and / or in the circumferential direction.

9. The roller according to claim 8, characterized in that, The magnet element (24) is supported on the magnet element carrier (37) in an axial and / or circumferential manner, either relative to at least one suction element (34) that is fixedly disposed on the magnet element carrier (37) or together with at least one suction element (34).

10. The roller according to claim 8, characterized in that, The magnet element (24) is movably supported in the axial and / or circumferential direction between two suction elements (34) that are fixedly supported on the magnet element carrier (37), or together with the two suction elements (34) on the magnet element carrier (37).

11. A machine (01) for generating optically variable primitives (03) on a substrate (02), the machine comprising: Substrate reservoir (13); at least one printing mechanism (04) by means of which a substrate (02) guided through the machine (01) on the transport path is printed and / or capable of printing in a matrix of m columns and n rows of sheets (09) on at least the first surface; a product receiving section (22) by means of which the processed substrate (02) can be integrated into an assembly; and an alignment device (07) disposed between the printing mechanism (04) and the product receiving section (22) in the substrate path for aligning magnetic or magnetizable particles (P), characterized in that the alignment device (07) has a roller according to any one of claims 1-10.

12. The machine according to claim 11, characterized in that, The printing mechanism (04) and the alignment device (07) or at least one impression cylinder (17) forming the printing portion (11) with the printing mechanism cylinder (14) of the printing mechanism (04) and the cylinder (26) carrying the magnetic element (24) are structurally integrated into a device (16) for generating optically variable primitives (03) and / or are constructed and / or supported on the same frame in a modular manner.

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