DE102017112015A1 - Apparatus and methods for magnetic printing and printed matter - Google Patents

Abstract

The invention relates to magnetic printing. For this purpose, a printing device (10) is provided which has a pressure surface (11) with a first region and a second region, the first region and the second region at least partially adjoining one another and forming at least one boundary line (28). Furthermore, the first region is a first magnetic region (24) and part of a first magnetic volume (20). Here, the magnetic volume (20) on a first magnetic pole (21) and a second magnetic pole (22), wherein the first magnetic pole (21) of the pressure surface (11) facing and the second magnetic pole (22) of the pressure surface (11) is turned away. Further, with the boundary line (28) a contour (32) on a substrate to be printed (31) hervorufbar.

Description

The invention relates to the technical field of printing technology. More particularly, the invention relates to a printing apparatus, a method of manufacturing a printing apparatus, a use of a printing apparatus, a printing machine, and a printed product.

In the printing technique hitherto, methods are known which make use of the physical phenomenon or are based on the effect of the magnetism in order to effect optical effects on a printed product. It is known to use paints or coatings with magnetically orientable particles, which interact with the printing device. However, the previously known techniques have the disadvantage that they are expensive and can provide very cumbersome or not at all individually according to data specifications printed products.

It is an object of the present invention to provide a solution to cause in the field of printing technology in a simple way optical effects with magnetic means.

This object is achieved with the subjects of the independent claims. Further preferred embodiments of the invention are disclosed in the dependent claims.

The object of the invention is achieved with a printing device having a printing surface with a first region and a second region, wherein the first region and the second region at least partially adjoin one another and form at least one boundary line. Furthermore, the first region is a first magnetic region and part of a first magnetic volume. Here, the magnetic volume has a first magnetic pole and a second magnetic pole, wherein the first magnetic pole facing the pressure surface and the second magnetic pole facing away from the pressure surface. Furthermore, with the boundary line a contour on a substrate to be printed hervorufbar.

The printing device according to the invention can also be referred to as a "printing form" or "cliché". The printing device or the cliché has a printing surface or printing side, which faces the substrate to be printed in the intended use and a mounting side, which can be mounted on a substrate, for example on a pad, platen or impression cylinder. Any size of cliché may be provided, for example, having an outer dimension of about 1000 mm x about 675 mm or about 1000 mm x about 750 mm (mm = millimeter).

Accordingly, a printing apparatus is provided, for example a printing plate or a printing film, which has at least one first area and at least one second area. The printing device can also be understood as a printing plate.

A "volume" is understood to mean a three-dimensional extent. In the present case, an "interface" is to be understood as meaning an area that adjoins a volume, wherein the area may be formed as a two-dimensional surface or as a three-dimensional surface. Likewise, a region such as the first and second regions of the printing device may be a two-dimensional as well as a three-dimensional surface. A three-dimensional surface arises when a flat surface is curved or otherwise deformed. Further, "printing surface" is understood to mean an area suitable for magnetic printing. Here, the printing surface itself may have a magnetic region, i. The magnetic area is part of the printing area. Furthermore, it is also possible that the pressure surface itself does not have the magnetic region, but the magnetic region acts only on the pressure surface, so that, for example, the magnetic region is arranged below the pressure surface and the pressure surface is formed, for example, by a coating.

A transition between two regions (magnetic region and non-magnetic region or magnetic region and magnetic region) forms a boundary line on the printing surface or at least below the surface of the printing device in a two-dimensional view as well as three-dimensional viewing. This boundary line is part of a flat boundary layer, which may be flat, that is, two-dimensional, or even three-dimensional, and which forms in three-dimensional viewing by an abutment of two volumes, for example a magnetic volume and a non-magnetic volume. The boundary line causes a sudden transition between a magnetic region and a non-magnetic region.

With the printing device optically appearing three-dimensional contours can be effected, the course of the boundary line on the pressure surface between the two areas predetermines the shape of the contour. In this case, a two-dimensional or three-dimensional geometry is to be provided under area which lies arbitrarily in space and is part of the printing surface or at least has an effect on the magnetic printing below the printing surface. In a flat pressure surface, which is preferred, the first and the second region is a surface which at its common interface a Forming a boundary line, which is located on the printing surface or below the printing surface and can affect magnetically orientable particles of a paint or a varnish in the vicinity of the printing surface.

It can be provided that the magnetic volume is formed by a permanent magnet. In this case, one pole of the permanent magnet can form a first pole of the magnetic volume and a second pole of the permanent magnet can form a second pole of the magnetic volume. For printing a substrate, a plurality of magnetic volumes can be used to form boundary lines of arbitrary shape.

A permanent magnet can be understood as a magnetic volume that permanently provides a magnetic effect in terms of time. The use of one or more permanent magnets has the advantage that with the printing device permanent magnetic effect can be provided. In this way, it is possible to use the printing device multiple times, so that the printing device is reusable, since the magnetic effect of a permanent magnet in time not or only slightly changed and long-term on the formed boundary line to non-magnetic material provides a magnetic effect, the technical can be used.

Furthermore, it can be provided in a further embodiment of the printing device, that the printing device is formed as a film. The film can also have permanent magnets or areas with magnetic effect, which is permanent.

Under a "foil" is understood in the field of printing technology, a metal or plastic sheet. A film has the advantage that it has a small thickness. Furthermore, it is advantageous if the film is flexible in order to be able to adapt to a predetermined geometry, for example a cylinder or a roll of a printing press. Furthermore, it is advantageous that a film can have any geometry and size of the printing surface. For example, the printing device made as a film may have a thickness of about 0.8 mm or less. Furthermore, the size of the printing device can be sized according to specifications of a printing press. Thus, by using a foil, the field of application of the printing device can be extended with respect to any printing press. Further, the film may be applied to a substrate, for example a substrate having adhesive or adhesive properties, e.g. to allow attachment of the film on a pressure roller.

In the case of a printing operation it can be provided that paint or lacquer with particles or pigments is applied to the substrate, the particles or pigments being magnetically orientable. In this way, it is possible for the magnetically orientable particles to align with respect to the boundary line of the printing device. Due to the exit of magnetic field lines at the boundary line, the magnetically orientable particles or magnetically orientable pigments tend to align along the magnetic field lines as well. It has been found that optical effects can be effected in this way. The magnetic region in the intended use during a printing operation acts on color particles having magnetic properties, so that a magnetically orientable particles or magnetically orientable pigments provide a three-dimensional optical effect on the printed product. Thus, it can be provided that the boundary line determines a printed image that causes three-dimensional optical effects by the print surface in normal use cooperates with color particles of a printing ink or a printing varnish. As used herein, the term "paint" and "paint" are used equivalently, as both types of coatings are suitable for having magnetically orientable particles. The terms "roller" or "pressure roller" and "cylinder" or "impression cylinder" are equally used in the present context, since both types are suitable as substrate-carrying devices to attach thereto one or more printing devices according to the invention.

The printing device according to the invention acts, for example, in a printing process through the substrate to be printed on the color or paint application of the front of the substrate, without necessarily coming into contact with this, since the magnetic effect of the printing device in the millimeter range magnetic forces can exercise.

Overall, the boundary line or a plurality of boundary lines of the printing device according to the invention is used to enable magnetic printing on a substrate by means of the printing device according to the invention. Here, contiguous boundary lines can be formed, for example as a border of a letter. Also, separate boundary lines may be used to print two parallel lines, for example, with two straight boundary lines.

The term "magnetic printing" in the present context, a printing on a substrate understood without causing any mechanical action to produce a Images come in the form of a pattern, a lettering or the like on the substrate. The printing of the image is based solely on a magnetic effect of the printing device which, when used as intended, interacts with magnetically orientable elements in a paint or varnish applied to the substrate.

In this context, "image" is understood to mean a contour or print result on a substrate that has lines, shapes, letters, patterns or the like. "Printed matter" is understood to mean the printed substrate with the image.

In a preferred embodiment of the printing device according to the invention, it can be provided that the second region is a non-magnetic region.

Accordingly, there is provided a printing device, the printing device having a printing surface with at least one magnetic region and at least one non-magnetic region, wherein one of the magnetic regions and one of the non-magnetic regions at least partially adjoin one another and at least one boundary line on the printing surface or form below the pressure surface, and for example, the boundary line runs parallel to the pressure surface. Here, the magnetic region is part of a magnetic volume, wherein the magnetic volume has a first magnetic pole and a second magnetic pole. In this case, the first magnetic pole faces the printing surface and the second magnetic pole faces away from the printing surface. Furthermore, with the boundary line a contour on a substrate to be printed hervorufbar.

In this embodiment, the transition between a magnetic and a non-magnetic region or a magnetic and a non-magnetic volume is used to provide as possible a sudden transition between the two areas. This sudden transition in the form of an interface in three-dimensional or in the form of a boundary line in two-dimensional view is used to technically exploit magnetic effects, in particular the course of magnetic field lines, to effect optical effects on a printed product. With the boundary line, a magnetic effect on a printed product can be evoked.

The boundary line between a magnetic region and a non-magnetic region is used to replicate letters, lines or patterns with the boundary line, for example. Thus, the boundary can take any shape. As it were, the boundary line describes a substrate to be printed, without the boundary line emerging from the surface of the printing form. Due to the magnetic effect of the boundary line on the substrate to be printed, the printed product can be magnetically described or printed. This uses the magnetic effect at a material transition of a magnetic and a non-magnetic material.

In a further preferred embodiment of the printing device it can be provided that the second region of the printing surface is a second magnetic region, which is part of a second magnetic volume, wherein the second magnetic volume has a first magnetic pole and a second magnetic pole. Furthermore, it can be provided that the two magnetic regions are aligned differently with respect to their magnetic poles.

Accordingly, the printing device has at least four magnetic poles, two north poles and two south poles each. The orientation of the poles is formed alternately on the pressure surface, so that at least one north pole and at least one south pole face the pressure surface and unfold their magnetic effect on the magnetically orientable particles.

In a further embodiment it can be provided that the printing device has a plurality of magnetic regions, wherein at least two magnetic regions are aligned identically with respect to their magnetic poles.

In addition to the plurality of magnetic regions, it may also be provided that the printing device has a plurality of non-magnetic regions. These may for example be arranged in each case between two magnetic regions. Further, it is possible for all magnetic areas of the printing surface to be similarly aligned with respect to their magnetic poles.

Under a similar orientation of the magnetic regions is to be understood that the existing magnetic poles are arranged with a magnetic north pole and a magnetic south pole in each case in the same direction. It can be provided, for example, that all magnetic Areas that face the printing surface, the magnetic north pole have. Accordingly, in each case the magnetic south pole of each magnetic region of the printing surface can be remote. Alternatively, it can be provided that all magnetic regions which face the printing surface have the magnetic south pole. Accordingly, in each case the magnetic north pole of a region of the printing surface can be turned away.

As an alternative embodiment, the magnetic poles may also be oriented differently. For example, North Pole and Südpolvolumen can be arranged side by side within a printing form. The arrangement may be direct, i. without further non-magnetic volume therebetween, wherein at least one north pole and one south pole are arranged side by side and each face the substrate. Further, the arrangement of the magnetic poles may also indirectly side by side facing the substrate, i. between the magnetic poles another non-magnetic volume is arranged.

According to a further embodiment of the printing device can be provided that at least one of the regions is formed by a polymer.

A polymer is understood to mean any plastic which has no or almost no magnetic properties. One or more non-magnetic regions can be formed from this polymer. Also, different polymers or polymer blends can be used for a single printing device. For this purpose, the polymer can be admixed with magnetic or magnetizable material for the formation of magnetic regions.

A polymer has the advantage of easily joining two different areas of a printing surface, such as a magnetic and a non-magnetic area, without gaps. A positive connection between a magnetic volume and a non-magnetic volume or a further magnetic volume, can form a boundary line for magnetic printing, which is sharp in its contour and thus particularly suitable for magnetic printing. Suitable polymers may be epoxy resins, polyethylene and polyurethane. Further, polymers for providing the magnetic volume may also be used by adding to this polymer a carrier having magnetic properties. In this way, for example, two different polymers can be used to produce the printing device.

Furthermore, it can be provided that the pressure surface has a curvature when used as intended.

This is possible, for example, if the printing device has a small thickness and is flexible, so that it can adapt to, for example, a curvature on the circumference of a pressure roller or a printing cylinder. This is easily possible if the printing device is designed as a printing film. Accordingly, the printing device has a radius or bending radius when used as intended. If the printing device is elastically deformable, it can assume a flat shape for storage and assume the shape of a circumference or partial circumference of a pressure roller or a printing cylinder and be attached to it in the intended use.

In a further embodiment of the printing device can be provided that the printing device has a coating.

Such a coating may be provided on the underside and / or the top of the printing device. Here, "upper side" of the printing device is understood to be the side or surface of the printing device which faces the printed product in its intended use. In other words, the upper side of the printing device has the printing surface. Accordingly, the "bottom side" of the printing device is understood to be the side or surface of the printing device which faces away from the printed product in its intended use. Accordingly, the underside of the printing device can be attached, for example, to a roller or cylinder of a printing press. In this case, it may be advantageous that the underside of the printing device has an adhesive surface in the form of a coating. It can also be provided that, instead of a full-surface coating on the underside of the printing device, a partially planar or selectively applied adhesive material is present in order to secure the printing device to a substrate, such as a pressure roller, or at least fix it. Furthermore, it may be advantageous that the upper side of the printing device has a layer which serves, for example, as a protective layer.

A coating on the top may be formed of one or more layers of material that will allow the magnetic effects of the magnetic regions underneath the coating to pass unimpeded. Thus, advantageously, the coating on the top of the printing device is magnetically ineffective. Further, the coating on top of the printing device may be used as a protective layer that mechanically protects the magnetic and non-magnetic regions just below the protective layer. This has the advantage that even with repeated use of the printing device, the magnetic and non-magnetic areas are not worn or damaged. The coating as a protective layer on top of the printing device is advantageously uniformly smooth over the entire surface.

Furthermore, the present invention relates to a manufacturing method for a printing device. Here, the method comprises providing a first region, for example a magnetic region, and a second region, for example a non-magnetic region. Furthermore, the method comprises arranging the first region and the second region such that the first region and the second region adjoin one another and form a borderline, wherein the first region is part of a magnetic volume and the magnetic volume has a first magnetic pole and a first magnetic field second magnetic pole, wherein the first magnetic pole facing the pressure surface and the second magnetic pole facing away from the pressure surface. Furthermore, in this case a contour on a substrate to be printed can be produced with the boundary line.

With the boundary line, in the intended use of the printing device, an optical effect or an image on a substrate can be effected in order to produce a printed product.

In one embodiment of the method, it can be provided that at least one magnetic region by casting a magnetic material, cutting out a magnetic material, by punching a magnetic material, by printing a magnetic material, in particular 3D printing (three-dimensional printing), and / or by Using a magnetic fluid or paste is provided.

Here, a magnetic "paste" is understood to mean a material which has a higher viscosity than a liquid and is a composition which has at least one substance which has magnetic properties and is permanently magnetizable in order to provide magnetic properties of the printing device. In this case, it is possible to use a paste-like mass for producing the printing device, which can be cast, pressed, sprayed or printed in 3D printing, for example. The magnetic paste can be prepared as a basic substance by a polymer. Further, in addition to the magnetic properties, the magnetic paste may have other properties by admixing other substances, for example, a substance for ultraviolet light stability or a substance for hydrophobic or hydrophilic properties.

Accordingly, it is possible to integrate prefabricated magnetic volumes in the printing device. Alternatively, it is also possible for a magnetization of an existing material, for example a magnetic paste, to be carried out during the production of the printing device as a work step.

In a further exemplary embodiment of the method, it can be provided that a first shaping of the first area and a second shaping of the second area are provided by specifying a data structure.

The specification of the geometry of the individual regions preferably takes place digitally in a data structure; in particular, a profile of the boundary line is formed by parameters in the data structure. In this way, it is possible to digitally program a printing device to subsequently, in machine, or at least partially, machine the printing device using the programmed data default.

Thus, data specifications can be specified in the form of a data structure to be printed as a contour or as an image. The specification of the contours takes place for example in the form of a digital file with predefined file format under definition of the contours. In this case, for example, vector data are used. Structures can be printed as an image. A corresponding printing device can be produced according to individual specifications, so that any shaped images can be printed with the printing device by digitally imaging the boundary lines between the magnetic and non-magnetic regions. Thus, the printing device according to the invention can be used in many ways, for example, to print fonts, patterns, logos or other geometric shapes.

Furthermore, the invention relates to a use of a printing device for magnetic printing using a layer with magnetically orientable particles, which can be applied to a substrate surface, wherein the printing device acts on this substrate surface.

The layer used is, for example, a paint or a varnish, each having magnetic properties, for example caused by magnetically orientable particles or magnetically orientable pigments or particles or pigments having magnetic properties which have been admixed with the paint or the paint. The printing device is correspondingly applied to the substrate, wherein the printing device preferably passes through the substrate, so that on a first side of the substrate, the printing device is arranged and on a second side, opposite the first side, applied the layer with magnetic properties in a printing operation can be.

Furthermore, the invention relates to a printing press. In this case, the printing press has at least one roller or a cylinder, a feed device for a substrate or printing medium and a ink supply device for feeding a paint, wherein the ink has magnetically orientable particles. It can be provided that on the roller or the cylinder, a printing device is arranged, which has at least one magnetic region. In this case, with the printing press a printed product can be produced by a magnetic effect of the at least one magnetic region of the printing device. It is further provided that at least one magnetic region of the printing device acts on the magnetically orientable particles during a printing process of the printing press and the magnetically orientable particles can be aligned by this effect and a contour on the substrate to be printed hervorufbar.

Accordingly, a printing machine is proposed which can be equipped with the printing device according to the invention in order to be able to produce a printed product based on a magnetic effect of the printing device, the magnetic particles interacting with a magnetic region of the printing device during the printing process.

In one embodiment of the printing press, it may be provided that the printing press is an offset rotary printing press, a flexo rotary printing press, a screen printing rotary press, a gravure rotary printing press, a sheetfed offset press, sheetfed flexographic press, sheetfed printing press or sheetfed offset press.

Accordingly, the printing device according to the invention can be used for machine printing in a printing press. In this case, the printing device can be used multiple times for printing. In one embodiment of the printing press can be provided that the printing device is arranged on a counter-pressure device, in particular on a counter-pressure cylinder and / or on a guide roller and / or a guide roller.

Furthermore, the invention relates to a printed product which has been processed by a printing device according to the invention. Here, the printed product on a substrate which is coated with a layer, wherein the layer has magnetically orientable particles. Furthermore, the printed product has at least one contour caused by magnetism, wherein the contour on the printed product is caused by aligned magnetically oriented particles of the layer.

In this case, the contour may have been aligned by at least one boundary line between a first region and a second region of the printing device. Accordingly, the printed matter has contours produced by magnetism, the contours having a three-dimensional appearance.

The layer may be a color layer or a lacquer layer. As substrates to be printed, papers, cardboard, plastic substrates and metal substrates or the like can be used, mainly substrates that can be processed by machine in the printing industry.

Furthermore, according to the invention, a method for producing a printed product can be provided. Here, the method comprises providing information describing an image of the printed product and storing the data in a production machine for a printing device. Furthermore, the method comprises providing at least one first area, for example a magnetic area, and a second area, for example a further magnetic area or a non-magnetic area. The geometry of the regions is provided, for example, based on data structure. Further, mounting of the printing apparatus is provided in a printing machine. Furthermore, the proposed method comprises supplying a substrate to the printing device and supplying paint with magnetically orientable particles. Further, applying the resist to the substrate and applying a pressure surface of the printing apparatus to the substrate are provided, wherein the pressure surface has at least one magnetic portion and at least one non-magnetic portion and a boundary between the magnetic portion and the non-magnetic portion the substrate acts.

Overall, a magnetic effect is used technically to produce three-dimensional optical effects on substrates in magnetic printing. The optical effects are caused by magnetically orientable particles on the printed product. Furthermore, individually adapted to an image or print motif, a printing device can be produced according to data. The printing device can be adapted in size to a printing press or to a roll of the printing press and easily mounted on this and then dismantled again, the printing device can be used several times after disassembly. Overall, the proposed solution is less expensive and uncomplicated in its application. Furthermore, the proposed printing device has a simple structure.

• 1 ein erstes Ausführungsbeispiel einer erfindungsgemäßen Druckvorrichtung in perspektivischer Ansicht;
• 2 die Druckvorrichtung der 1 in einer Draufsicht;
• 3 eine schematische Darstellung eines magnetischen Volumens;
• 4 das magnetische Volumen der 2 mit beispielhaften magnetischen Feldlinien;
• 5 ein zweites Ausführungsbeispiel einer erfindungsgemäßen Druckvorrichtung in Schnittansicht;
• 6 ein drittes Ausführungsbeispiel einer erfindungsgemäßen Druckvorrichtung in Schnittansicht;
• 7 ein viertes Ausführungsbeispiel einer erfindungsgemäßen Druckvorrichtung in Schnittansicht;
• 8 ein fünftes Ausführungsbeispiel einer erfindungsgemäßen Druckvorrichtung in perspektivischer Ansicht;
• 9 ein Druckerzeugnis, das mit der Druckvorrichtung der 8 bedruckt wurde;
• 10 ein Ausführungsbeispiel einer Druckmaschine für die Herstellung eines erfindungsgemäßen Druckerzeugnisses unter Verwendung der erfindungsgemäßen Druckvorrichtung;
• 11 eine Detailansicht der Druckmaschine der 10 in einem ersten Zustand; und
• 12 eine Detailansicht der Druckmaschine der 10 in einem zweiten Zustand.

The invention, as well as other features, objects, advantages and applications thereof, will be explained in more detail below with reference to a description of preferred embodiments with reference to the accompanying drawings. In the drawings, the same reference numerals designate the same or corresponding elements. All described and / or illustrated features alone or in any meaningful combination form the subject matter of the present invention, regardless of their summary in the claims or their dependency. In the drawings show:

• 1 a first embodiment of a printing device according to the invention in a perspective view;
• 2 the printing device of 1 in a plan view;
• 3 a schematic representation of a magnetic volume;
• 4 the magnetic volume of 2 with exemplary magnetic field lines;
• 5 A second embodiment of a printing device according to the invention in sectional view;
• 6 a third embodiment of a printing device according to the invention in sectional view;
• 7 A fourth embodiment of a printing device according to the invention in sectional view;
• 8th a fifth embodiment of a printing device according to the invention in a perspective view;
• 9 a printed product associated with the printing device of 8th was printed;
• 10 an embodiment of a printing machine for the production of a printed product according to the invention using the printing device according to the invention;
• 11 a detailed view of the printing press the 10 in a first state; and
• 12 a detailed view of the printing press the 10 in a second state.

1 shows a first embodiment of a printing device according to the invention 10 in perspective three-dimensional view. In 1 To illustrate the three-dimensionality, a coordinate system is shown with the axes x . y and z , each one dimension of the printing device 10 mark. The printing device 10 has a three-dimensional magnetic volume 20 with a first magnetic pole 21 and a second magnetic pole 22 on. The magnetic volume 20 is formed in this embodiment as a cuboidal volume and has flat surfaces on six outer sides of the volume 20 on. Further, the first magnetic pole abuts 21 and the second magnetic pole 22 flat on each other and form a flat two-dimensional interface, with a boundary line 23 the interface in 1 shown partially inside the printing device 10 lies. In the present embodiment, the first magnetic pole 21 the magnetic north pole of the magnetic volume 20 and the second magnetic pole 22 the magnetic south pole of the magnetic volume 20 , However, in other embodiments, the poles can be reversed, so that the first magnetic pole 21 the magnetic south pole and the second magnetic pole 22 the North Pole is. In both cases, one of the magnetic poles forms a pressure surface 11 while the other magnetic pole of the pressure surface 11 turned away.

The printing surface 11 has a magnetic range 24 on, which is formed by one of the magnetic poles or by a magnetic pole. The printing surface 11 is used for magnetic printing and is in intended use facing a substrate to be printed. The magnetic field 24 is through the first magnetic pole 21 of the magnetic volume 20 educated. It is also possible that the magnetic pole is covered by an additional layer and thus the pressure surface 11 only indirectly affects a substrate, since it then does not come into contact with the substrate surface. This magnetic field 24 is fully effective in such a case, even if the magnetic pole 21 below an outer surface of the printing device 10 If, for example, a layer between the printing surface 11 and the surface of the printing device 10 is trained. In the embodiments of the 5 to 8th this is the case, ie the magnetic volume 20 lies at least partially or completely within the printing device 10 , In the embodiment of 1 forms the magnetic volume with its pressure surface 11 an outer surface of the printing device 10 ,

Thus, the magnetic field 24 by a magnetic pole 21 of the magnetic volume 20 is formed, directly on the printing surface 11 Act. In such a case, the magnetic pole forms 21 the printing surface 11 ,

1 also shows two non-magnetic regions 25 , each to the magnetic field 24 adjoin. Each of the magnetic areas 25 forms in the present case in each case an edge region of the printing device 10 ,

2 shows the printing device 10 of the 1 in a plan view, ie in the coordinates z and y out 1 in which the non-magnetic areas 25 partly the magnetic field 24 In particular, the magnetic volume is adjacent to two non-magnetic volumes. Here is the printing surface 11 shown in a plan view, wherein the in 2 visible magnetic area 24 and the two non-magnetic regions 25 with the printing surface 11 are identical.

At the transition between the magnetic field 21 and the non-magnetic region 25 forms inside the printing device 10 an interface 27 out. At the interface 27 form borderlines 28 from which the interface 27 limit, being one of the borderlines 28 the printing surface 11 facing and parallel to the printing surface 11 runs. This in 2 exemplified borderlines 28 are used to magnetically print a substrate. In an embodiment of the printing device according to the invention 10 , as in 1 shown, the substrate comes with the printing surface 11 the printing device 10 in contact with magnetic printing. Indirect contact is also possible by placing between the printing surface 11 and the magnetic volume is a further layer, for example a protective layer, which in the embodiments of the 5 to 7 is shown. Furthermore, it is not necessary that substrate and printing surface 11 during magnetic printing, since the magnetic effect of the magnetic volume of the printing device 10 also acts contactless.

The printing device according to the invention 10 can be used manually or in a printing machine. In both cases, a coating with magnetically orientable particles is applied flat on the substrate or applied at least partially flat. In the present embodiment of 1 and 2 arise two lines as a print result or image on the substrate to be printed according to the contour of the two boundary lines 28 the printing device 10 , Thus, a contour is printed magnetically on the substrate, which remains permanently on the substrate. The use of magnetically orientable particles in the applied paint results in optically three-dimensional effects on the substrate. In the present embodiment of 2 is a monochrome image with a three-dimensional contour with two parallel lines corresponding to the course of the two boundary lines 28 generated. The optically three-dimensional effect is due to the effect of the boundary line 28 causes. The applied magnetically orientable particles depend on the course of the boundary line 28 so that at these points the particles have a different orientation than at the magnetic surface 24 and on the non-magnetic surface 25 , This means that the area 24 and the area 25 cause the same visual appearance on the image and only the borderline 28 causes a three-dimensional contour, wherein the printed product on the substrate surface shows no roughness and flat uniformly smooth.

In an alternative embodiment with respect to 3 and 4 can the magnetic pole 21 below the printing surface 11 inside the printing device 10 be educated. The location of the magnetic volume 20 may require additional optional coatings of the printing device 10 depend. For example, at the magnetic region 24 a coating may be disposed about the printing device 10 mechanically protect.

To illustrate the technical effect used when printing a printed product with the printing device according to the invention 10 is in 3 and 4 the magnetic volume 20 of the embodiment of the printing device according to 1 shown. At the surface of the magnetic volume 20 become edge effects of the magnetic domain 24 used to print outlines on a printed product. For this purpose, material is applied to the printed product, for example lacquer with magnetically orientable particles, which is particularly at the edge regions of the magnetic field 24 aligns.

As in 4 is shown schematically, the most strong edge effects of the course of magnetic field line 26 used to align magnetic particles or pigments on a printed product in the immediate vicinity. This alignment of the magnetic particles or pigments causes a visual three-dimensional effect on the printed matter without the printed matter becoming uneven or rough on its printed surface by the printing process.

5 shows a second embodiment of a printing device according to the invention 10 in cross-section at the one magnetic volume 20 a partial area of a printing surface 11 forms. The printing surface 11 has a magnetic range 24 up through a first pole 21 of the magnetic volume 20 is formed. Further, the magnetic region 24 a second magnetic pole 22 which adjoins the first magnetic pole. The printing surface 11 the printing device 10 has a non-magnetic area 25 on, which is formed for example by a polymer. Here are the limits of the magnetic field 24 and the non-magnetic region 25 to each other and each form a borderline 28 , The borderline 28 lies below the printing surface 11 and works through a protective layer 13 through to the printing surface 11 , The protective layer 13 For example, it can be used to mechanically protect the printing surface 11 serve. Furthermore, the printing device 10 a carrier layer 12 on. The carrier layer 12 For example, it can serve as a pad and be used to create multiple areas 24 . 25 to fix in their position to each other. The borderline 28 is in the intended use of the printing device 10 used to cause an optical effect on a printed product, in particular to align magnetically orientable particles in a paint or in a color magnetically. The carrier layer 12 as well as the protective layer 13 are each optionally available.

In the embodiment of the 5 become two borderlines 28 formed, caused by a first transition from the magnetic region 24 to the non-magnetic region 25 and by a second transition from the non-magnetic region 25 to a second magnetic region 24 ,

6 shows a third embodiment of a printing device according to the invention 10 , wherein the printing device 10 two non-magnetic areas 25 characterized by a magnetic field 24 be separated from each other. The magnetic poles of the two magnetic domains 24 are aligned similarly. This means that in the present embodiment, for example, the magnetic north poles of the printing surface 11 are facing and the magnetic south poles of the pressure surface 11 are averted. Here, the printing device of the 6 an optional carrier layer 12 and an optional protective layer 13 on, as well as in 5 shown.

In the embodiment of the 6 will also be like in 5 two borderlines 28 educated. at 6 becomes a first borderline 28 by a transition from the first non-magnetic region 25 to the magnetic domain 24 educated. Further, in 6 a second boundary line 28 through a transition from the magnetic domain 24 to the second non-magnetic region 25 educated. In this case, the printing device 10 of the 6 an optional carrier layer 12 and an optional protective layer 13 on.

Basically, with the embodiments of the 5 and 6 each the same image or print image are generated, because it is on the course of the borderlines 28 for the image arrives. For example, are the trained borderlines 28 in the sectional view of 5 and 6 each straight line, as in 1 shown, so can with the pressure devices 10 of the 5 and 6 each two straight lines are printed as a contour magnetic. This is possible if the two embodiments of the 5 and 6 geometrically equal borderlines 28 but in different ways due to the arrangement of the magnetic and non-magnetic regions 24 . 25 were caused.

7 shows a further embodiment of a printing device according to the invention 10 in sectional view. Here, both a first region is a magnetic region 24 as well as a second area a magnetic area 24 , Furthermore, the printing device 10 a third magnetic domain 24 on. The magnetic areas 24 each have magnetic poles 21 . 22 on, being one of the poles of each area 24 the printing surface 11 is facing and one of the poles of each area 24 the printing surface 11 turned away. Further, each two of the magnetic regions adjoin 24 to each other and each form a borderline 28 , Two adjacent magnetic areas 24 differ here with respect to their orientation of the magnetic poles 21 . 22 , So are alternately magnetic north pole and magnetic south pole of the pressure surface 11 facing. A lower layer 12 and an upper layer 13 are optional as in the other embodiments, since the effect of the printing device 10 through these layers 12 . 13 is not affected.

Furthermore, it is possible that in the context of the present invention the embodiments shown and described can be combined. For example, it is possible that the printing device 10 according to 7 also non-magnetic areas 25 having. These can, for example, between the magnetic areas 24 lie. In this way, alternating magnetic areas 24 and non-magnetic areas 25 adjacent to each other, wherein additionally the orientation of the magnetic poles 21 . 22 in relation to the printing surface 11 change alternately.

In the context of the present invention, it is also possible according to a further embodiment, that the side surfaces 27 the magnetic poles 21 . 22 not at right angles or at nearly right angles with respect to the printing surface 11 are aligned, for example, in 1 the right-angled or nearly right-angled case is shown. Instead, the side surfaces 27 inclined with respect to the printing surface 11 be arranged. In this way, you can get magnetic volume 20 similar to in 3 result, however, in side view and sectional view, respectively 4 form a trapezoidal shape, a diamond shape, a triangular shape or similar geometries with oblique side boundaries. They are therefore inclined side surfaces 27 possible, which can form any angle to each other. These shapes have Impact on magnetic printing, because of its geometry, the magnetic effect on the printing surface 11 is changeable.

Although it can by the magnetic effect of the magnetic volume 20 also magnetic effects in the non-magnetic region 25 occur, but these are the magnetic volume or the magnetic field near the pressure surface 11 the printing device 10 attributed. The non-magnetic area 25 has a non-magnetic material so that at least one side surface 27 between the magnetic volume and the non-magnetic volume. The side surface 27 is in the embodiment of 1 perpendicular or at right angles or almost at right angles to the pressure surface 11 arranged. At the geometric places where the interface 27 the two-dimensional magnetic field 24 limited, forms a borderline 28 which is used commercially for "magnetic printing" of the present invention.

8th shows a fifth embodiment of a printing device according to the invention 10 in perspective view. With this embodiment, the letter "T" is to be magnetically printed. For this purpose, the printing device 10 a magnetic volume 20 which corresponds to the shape of the letter "T". To this shape of the letter is a non-magnetic volume adjacent to lateral interfaces 27 , Thus, instead of the cuboid shape of 1 used another embodiment of the magnetic volume.

9 shows a printed product 46 that with the printing device of the 8th was printed. This was a substrate 31 the printing device 10 supplied, so that the substrate 31 directly or through an intermediate layer on the printing device 10 at least for a short time. The substrate 31 may be, for example, paper, cardboard, plastic or metal foil. By applying a paint or lacquer layer with magnetically orientable particles during the action of the printing device 10 on the substrate 31 becomes at the interface between the magnetic field 24 and the non-magnetic region of the printing device 10 a contour 47 the letter "T" magnetically printed. Here, the magnetically orientable particles cause at the borderlines 28 a three-dimensional optical effect, so that the contour 47 of the letter "T" is perceived three-dimensionally by a viewer. The printed surface of the substrate 31 This is smooth, without the magnetically oriented particles can be perceived haptic. Also, the size of the individual magnetically orientable particles is so small that individual particles are optically imperceptible. Rather, a collection of magnetically oriented particles as a three-dimensional optical effect is perceptible.

It is within the scope of the present invention that any number of letters, numbers, characters, and geometric shapes may be used with a single printing device 10 be printed magnetically, so that the printing device 10 corresponding borderlines 28 which reflects this image design.

10 shows an embodiment of a section of a printing press 40 , in particular a sheet-fed offset printing machine, which in a working section a printing layer as a color 33 or paint 33 with magnetically orientable particles on a substrate 31 applies. The illustrated section of the printing press 40 can also be referred to as a printing unit or as a printing unit, which is formed in the present embodiment in the form of a flexographic printing unit, also referred to as a flexographic printing unit.

In the embodiment of 10 has the printing press 40 or the flexographic printing unit an anilox roller 41 , a paint form cylinder 42 and an impression cylinder 43 on. Furthermore, the printing press has 40 a paint supply device 44 on, the color 33 with magnetically orientable particles or paint 33 with magnetically orientable particles. The color 33 or the paint 33 gets on the substrate 31 ie on the print medium 31 applied to after applying the paint 33 of the paint 33 to provide a printed product.

The directions of the rollers and cylinders are correspondingly in 10 marked with arrows. Furthermore, a horizontally extending arrow shows the conveying direction of the substrate 31 on, by the printing press 40 is carried out over several printing stations.

Here, the printing station shown leads the printing press 40 in 10 For example, a finishing of the substrate 31 by, as the last layer, the color 33 with magnetically orientable particles or the paint 33 is applied with magnetically orientable particles. This may be, for example, a Flexolackierwerk a sheetfed offset press, with which a printing of the substrate 31 is carried out.

During a printing process, the ink supply device 44 or a chamber squeegee the color 33 with magnetically orientable particles or the paint 33 with magnetically orientable particles available. This color 33 or the paint 33 passes over the anilox roller 41 on the paint form cylinder 42 that the paint or the paint 33 as a layer 34 the substrate 31 supplies. The substrate 31 may be paper, cardboard or foil, for example.

10 shows a section of a printing process. In previous printing stations of the printing press 40 became, for example, the substrate 31 already printed with paint or varnish and in a final step of the printing process is the last layer of the color 33 with magnetically orientable particles or the paint 33 with magnetically orientable particles applied. For example, in the previous steps within the printing press 40 the substrate 31 printed with a uniform arbitrary hue, so that subsequently a contour 32 or an image 32 can be magnetically printed on this background.

For a magnetic printing in the present embodiment of the 10 a printing device according to the invention 10 on the impression cylinder 43 attached, leaving the printing device 10 with the rotational speed of the impression cylinder 43 is moved. The printing device 10 is here designed as a film and on the impression cylinder 43 glued, in particular on a part of the circumference of the impression cylinder 43 , In this case, the printing device 10 a curvature having a radius of curvature, wherein the radius of curvature of the printing device 10 the radius of the impression cylinder 43 equivalent. Furthermore, it is also possible several printing devices 10 within the printing press 40 to use, for example, by attachment of a plurality of printing devices according to the invention 10 , It is also possible that the printing device according to the invention 10 the entire circumference of the impression cylinder 43 covered so that upon rotation of the impression cylinder 43 several supplied substrates 31 can be magnetically printed.

In 11 and 12 is schematically each a temporal state of the printing press 40 out 10 for magnetic printing of the substrate 31 shown. 10 shows a temporal state of the printing press 40 in which the substrate 31 the paint form cylinder 42 and the impression cylinder 43 has already been fed. The substrate 31 is located between the lacquer printing cylinder 42 and the impression cylinder 43 and comes in this position with the supplied color 33 or the supplied paint 33 on the paint form cylinder 42 in contact. The printing device 10 acts on the substrate 31 between the two cylinders 42 . 43 on the substrate 31 one. The substrate 31 has a print page that the lacquer printing cylinder 42 is facing. On the back of the print side, the substrate has 31 a Einwirkseite on which the impression cylinder 43 is facing. The substrate 31 becomes the color on the print page 33 or the paint 33 fed. On the Einwirkseite of the substrate 31 acts an embodiment of the printing device according to the invention 10 on the substrate 31 , This means that the printing device 10 not with the color 33 or the paint 33 comes into contact, but only magnetic to the color 33 or the paint 33 with magnetically orientable particles on the pressure side of the substrate 31 acts. Consequently, the printing device acts 10 through the substrate and unfolds its effect on the printing side of the substrate, where the color 33 or the paint 33 through the printing device 10 is influenced to magnetically orientable particles of color 33 or the paint 33 to align, which is an alignment at the boundary lines of the printing device 10 or near the borderline 28 he follows. The course of the borderline 28 does not need this on the printing surface 11 the printing device 10 lie, there a borderline 28 also below the printing surface 11 unfolds a magnetic effect. Overall, when exposed to the pressure surface 11 the printing device 10 on the substrate 31 the desired image with a contour on the substrate 31 generated. For this purpose, the contour advantageously by data specifications in the production of the printing device 10 predetermined to be able to produce a printing device by machine or at least partially by machine. Thus, a printing device can be used multiple times for one and the same contour.

11 schematically shows a temporal state of the printing press 40 with a printed substrate 31 as printed matter 46 after a printing process. The printed product 46 indicates a printing contour after printing 47 or an image 47 on what through oriented particles 34 the applied color 33 or the paint 33 was caused. These aligned particles 35 create an optical three-dimensional effect that can be visually perceived by a viewer.

Alternatively to the in the 10 to 12 schematically illustrated printing press 40 With a flexographic printing unit, other types of printing machines can be used to use the inventive technique. For example, in the gravure printing method, the printing device according to the invention can be fastened on a impression roller. Further, in rotary printing process, the printing device according to the invention may be mounted on a guide roller.

The invention has been explained in detail above with reference to preferred embodiments thereof. However, it will be apparent to those skilled in the art that various modifications and changes can be made without departing from the spirit of the invention.

LIST OF REFERENCE NUMBERS

10

printing device

11

printing surface

12

backing

13

protective layer

20

magnetic volume

21

first magnetic pole

22

second magnetic pole

23

Borderline between magnetic poles

24

magnetic area

25

non-magnetic area

26

magnetic field line

27

Interface between a first area and a second area

28

Borderline between a first area and a second area

29

non-magnetic volume

30

Printed Media

31

Print medium or substrate

32

Contour or print contour with three-dimensional effect

33

Color with magnetically orientable particles

34

Layer, such as a paint film or a paint film

35

magnetic oriented particles or magnetically oriented particles

40

Printing machine, in particular as an exemplary embodiment with a flexographic printing unit

41

anilox roller

42

Coating form cylinder

43

Impression cylinder

44

Ink feed arrangement

Claims (13)

Having printing device (10) a pressure surface (11) having a first region and a second region, wherein the first region and the second region at least partially adjoin one another and form at least one boundary line (28), wherein the first region is a first magnetic region (24) and is part of a first magnetic volume (20), the magnetic volume (20) having a first magnetic pole (21) and a second magnetic pole (22) magnetic pole (21) facing the pressure surface (11) and the second magnetic pole (22) facing away from the pressure surface (11), and wherein the boundary line (28) a contour (32) on a substrate to be printed hervorufbar (31) is. Printing device (10) after Claim 1 wherein the second region is a non-magnetic region (25). Printing device (10) after Claim 1 wherein the second region is a second magnetic region (24) forming part of a second magnetic volume (20), the second magnetic volume (20) having a first magnetic pole (21) and a second magnetic pole (22). wherein the two magnetic regions (24) are oriented differently with respect to their magnetic poles (21, 22). Printing device (10) after at least one of Claims 1 to 3 wherein the printing device (10) comprises a plurality of magnetic regions (24), wherein at least two magnetic regions (24) are aligned identically with respect to their magnetic poles (21, 22). Printing device (10) after at least one of Claims 1 to 4 wherein at least one of the regions is formed by a polymer. Printing device (10) after at least one of Claims 1 to 5 , wherein the pressure surface (11) has a curvature when used as intended. Printing device (10) after at least one of Claims 1 to 6 , wherein the printing device (10) has a coating (16). Method for producing a printing device (10), in particular for producing a printing device (10) according to at least one of Claims 1 to 7 imaging device comprising providing a pressure surface (11) having a first region and a second region, and disposing the first region and the second region such that the first region and the second region (25) adjoin one another and form a boundary line (28) the first region is part of a magnetic volume (20) and the magnetic volume (20) has a first magnetic pole (21) and a second magnetic pole (22), the first magnetic pole (21) facing the pressure surface (11) and the second magnetic pole (22) facing away from the pressure surface (11), wherein with the Border line (28) a contour (32) on a substrate to be imprinted (31) can be caused. Method according to Claim 8 wherein at least one magnetic region (24) is provided by casting a magnetic material, cutting out a magnetic material, punching, printing, in particular three-dimensional printing, and / or by using a magnetic paste. Method according to Claim 8 or Claim 9 , wherein a first shaping of the first area and a second shaping of the second area are provided by specifying a data structure. Use of a printing device (10) according to one of Claims 1 to 7 method of magnetic printing using a magnetically orientable particle layer (34) applicable to a substrate surface and wherein the printing device (10) acts on the substrate surface. Printing press (40) at least one roller (41, 42, 43); a feeder for a substrate (31); ink supply means (44) for supplying a paint (33), the ink (33) having magnetically orientable particles; wherein on the roller (41, 42, 43) a printing device (10) is arranged, which has at least one magnetic region (24), wherein the printing machine (40) a printed product (46) by a magnetic effect of the at least one magnetic region (24) of the printing device (10) can be produced, and wherein at least one magnetic region of the printing device (10) acts on the magnetically orientable particles during a printing operation of the printing press (40) and the magnetically orientable particles can be aligned by this effect and a contour (32) on the substrate to be printed (31) is hervorufbar , Printed product (30) processed by a printing device, in particular by a printing device (10) according to one of Claims 1 to 7 ink jet printing machine comprising a substrate (31) coated with a layer (34), said layer (34) comprising magnetically orientable particles, said printed product (30) having at least one magnetism induced contour (32), and said contour (32) on the printed product (30) is caused by aligned magnetically oriented particles (35) of the layer (34).

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