Printing form (variants) and printing method

FIELD: printing form for printing of, in particular, securities and documents, and a printing method.

SUBSTANCE: printing form contains, at least, two functional layers 1 and 2, first one of which is made with through printing elements 3 and 4 for transferring painted image directly onto carrier material 5. Printing form has means 8 for tearing paint layer and redistributing paint in printing elements between layers, which means may be made in form of a mesh or honeycombed structure between layers 1 and 2. In accordance to invention, printing method includes transferring form pattern onto carrier material by means of described printing form, while during printing pressure is created in printing zone, value of which exceeds the yield point value of the carrier material.

EFFECT: possible creation of imprints, analogical to metallographic printing imprints, with more complicated structure and increased degree of protection from forgery; improved quality of imprints due to decreased probability of spraying of paint across space sections of form during printing, and also due to fine-grain structure of imprint surface with high productivity and possible use of broad assortment of painting materials.

4 cl, 12 dwg

 

The present invention relates to a printing form for printing, in particular securities and documents, and printing method using the printing plate.

Known printing plates with recessed screen printing elements, with ink in them from the reverse side of the form through special channels. These forms are divided into two types - flat and rotary and are intended primarily for otnositelnoi multi-color printing monochrome images. Methods of inking and structure of the inking units for such forms are characterized by diversity and complexity that can be presented on the example of the inking units of printing forms "Colorflo"used in machines made by "Carraro (Italy) (Niespyjnosci. Platemaking and printing processes (technology and systematization), book 2, C-130, M: Book, 1991 - [1].

In the same source [1] information described stencil forms of solid materials with attached mesh, available from printed material to ensure the net effect of screen printing and increase reprinted forms, of which the simplest is to stencil the shape of the obtained metal-based cut-out or equivalent means, which is attached to the grid to increase the strength.

Famous characterized by high is why the length of screen printing plate, the resulting electrolytic deposition of metals with engraved matrices and galvanizing capacity of the metal, for example Nickel, white-space plots mesh base.

Described in [1] screen forms are primarily used for printing posters, billboards, advertising, and similar products with a clear delimitation of stroke of color images.

Well-known screen printing plate is not applicable for the printing of securities and documents, such as banknotes, bonds, cheques, etc. with high standards of security against forgery.

Because of the specific features of screen printing and, in particular, due to insufficient pressure in the print area, and because the transfer ink layer is performed by supplying ink to the printing material from the side opposite the printed surface of the mold under low pressure, sealed by screen method, the materials may not be typical of securities and documents of prints.

Valuable papers and documents are produced, generally, by the method of metallographic printing, in which the respective image areas usually reproduce by using linear raster.

For such printing ink filled only deepen performed on the surface of the printed Faure is s etching or engraving, why after applying ink to the printing plate, the excess is removed by means Vechernij devices (EN 2249639, WM 3/14, 10.04.2005 - [2], WO 00/20216, WM 3/00, 13.04.2000 - [3].

In the printing process printed material with high pressure on the pressure cylinder with an elastic surface to printed form. Thus, at least partially compressible base printing material, for example paper, is pressed into the filled paint deepening of the printing form.

Subsequent separation of the printing material from the printing plate held up to this point in the recesses of the printing plate printing ink remains on the surface.

Thus obtained imprint consists of spaced apart printed lines or areas (dice), which, depending on the depth of the engraving of the printing form is covered with a colored layer of different thickness.

Under high pressure the printed material is additionally subjected to embossing, and the reverse side of the media becomes a relief structure. When sufficient depth engraved on the printed form depressions in the printing method of metallographic printing the basis of the result of its stamping and transfer it paints the result is a print with a distinct touch of a relief structure. Available from image phase the surface of printing material are in the process of printing under high pressure kind of calendering, which leads to compaction and smoothing the surface of the paper.

These are the features obtained by the method of metallographic printing impressions allow us to distinguish them from the impressions obtained by other methods.

However, the process of transfer of ink from the plate to the printing material is also a factor in determining the quality of the imprint, which depends on the structures formed by splitting of the ink in the transfer process. A visual assessment of the impression they create the impression of uneven sealing surface of the paper, especially on the dice.

In addition, when a large quantity of paint in a confined space depth of the printing element in the process of pushing it to the flap of material under pressure, the paint can be sprayed on whitespace areas of the form.

As is known, the amount of ink passing on the printed material in the deep and, in particular, metallographic printing depends on the depth of the printing element.

In printed form elements based paint is not as smooth layer, and has a more or less uneven granular structure.

The transfer of excessive amounts of paint leads to the formation of too rough structure on the surface of the transferred after splitting layer. Relatively strong cohesive connection of the paint particles impede the assaley, and the paint is subjected to a shift in the contact zone in such a way that forms a large colorful bundle which, in the end, torn in the middle.

A small number of colorful threads per unit area leads to the formation of a rough surface structure splitting, which on paper has the appearance of orange peel skin. Fine structure of the surface of rupture leads to greater uniformity of the imprint.

It is known that a high uniformity of the imprint can be achieved with the exception of the factors that impede the transfer of ink at the stage of rupture, such as high viscosity, high speed printing and low thickness of the paint layer.

However, this limits the variety of colorful materials that can be used to achieve certain effects, providing a high degree of protection of the valuable document from forgery and, in addition, reduces the printing performance.

The basis of the invention was based on the task of creating a printing plate with a through printed items similar to screen printing elements for printing more complex prints with a high degree of protection against forgery, similar prints metallographic printing.

In addition, the basis of the invention was based on the task to improve the quality of the imprint at the expense of improving the Oia structure of its surface, provided that the rupture of the paint layer in printed form elements to obtain a fine-grained structure of the ink in the transfer printing process, and also due to the exclusion of spray paint on space stations because of the possibility of redistribution of ink in the printed elements.

This problem is solved by using objects presented in the independent claims. Preferred embodiments of the invention are given in the respective dependent claims.

According to the first invention this object is achieved due to the fact that the printed form contains at least two functional layers, the first of which is made through printing elements for transferring color images directly on the printed material, and means for breaking the paint layer and the redistribution of ink in the printed elements on the boundary between the layers when the penetration of the ink into the printing elements under the pressure of printing.

This ensures the formation of the fine structure of the surface rupture of the paint layer and a more uniform distribution of the dye between the printing elements, which improves print quality and eliminates splashing paint on space stations.

Tool to break the paint layer and pereras the division colors in the printed items can be made in the form of a layer of the honeycomb structure between the first and second functional layers, moreover, the porous layer when this is performed with channels, informing the cavity of the cell.

Printing elements of the first layer can include point and/or line and/or spot printing elements.

According to another invention of the printing form contains at least two functional layers, the first of which is made through printing elements for transferring color images directly on the printed material and the means to break the paint layer and the redistribution of ink in the printing elements while pressing them in paint under pressure from the press, made in the form of ribbed structures or areas formed on the surface of the inner side of the same and/or another functional layer at the boundary between layers.

Rib structure or sections of ribbed structure can have a constant and/or variable pitch of the protrusions, and the rib structure or its parts can be formed on the surfaces of the inner sides of both layers.

The gaps between the protrusions ribbed patterns are formed of profile grooves.

Such embodiment of the printing form implements one of the most technologically advanced and easiest ways of obtaining the means to break the paint layer and the redistribution of ink in the printing elements in the form of ribbed structures is or her sites.

The plot of a ridge structure is formed of at least two grooves in one of the layers exposed to the surface of the inner side of the other layer at the boundary between layers, and informing the cavity, at least two adjacent printing elements, and interconnecting the side walls of the grooves form a ledge ribbed structure, the top of which is adjacent line to the surface of the inner side of another layer.

Rib structure or a portion of a ribbed structure can be formed on the surface of the inner side of the second functional layer on the interface between the layers.

A printed form can contain point and/or line and/or spot printing elements, which provides the ability to create a variety of prints.

The distance between vertices of adjacent protrusions ribbed structure must be less than the width of a bar and/or dot printing element in order to secure a gap layer of paint in any printed form element.

Ribbed structure with a systematic structure and/or zones of different systematic, including raster structure provides the ability to create the prints, for example, spot printing elements additional visual effects.

The depth of the gaps between the projections ribbed structure can be more be the tion between them, this rib structure may be formed on the inner surface of the first layer at the boundary between layers, and on the inner surface of the second layer in the areas exposed by the printing elements formed of the skin.

In addition, the rib structure or, at least, the plot ribbed structure can be formed on the surface of the inner side of the first layer and on the surface of the inner side of the second layer formed of the linear raster structure. When this frequency raster patterns may coincide with the pitch of the projections ribbed patterns, and projections ribbed patterns may contact the protrusions raster patterns formed by the gaps between the lines.

According to another embodiment of the printed form contains at least two functional layers, the first of which is made through printing elements for transferring color images directly on the printed material, and means for breaking the paint layer and the redistribution of ink in the printing elements while pressing them in paint under pressure from the press, made in the form of a grid between the first and second functional layers.

Printing elements of the first layer can include both point and/or line and/or spot printing elements.

While on the surface the minute the inner side of the second functional layer on the boundary with mesh made of parallel grooves, forming protrusions intended as a support for threads weave mesh structure.

The step of the grid cells and the step of grooves may be the same and should not exceed the minimum width of a bar and/or dot printing element in order to secure the rupture of the paint layer in the printed elements.

According to another invention, a method of printing, which consists in the transfer plate image on the printed material, in which the seal shall be implemented by a printed form containing at least the first functional layer with end-to-end printing elements for transferring color images directly on the printed material, the second functional layer, and means for breaking the paint layer and the redistribution of ink in the printed elements on the boundary between the layers when the penetration of the ink into the printing elements under the pressure of printing, in the printing process in the print area to create a pressure in excess of the value of the yield strength of the printed material.

It also provides reception of impressions for the implementation of the method with typical metallographic printing features - embossed paper structure identifiable by touch relief structure of the stamp, seal and smooth the surface of the material price is Noah paper or document.

In addition, a printing method, in particular, can be carried out by means of the printing form, having the means to break the paint layer and the redistribution of ink in the printed elements on the boundary between layers in the form of ribbed structures or areas formed on the surface of the inner side of one of the functional layers at the boundary between the layers or in the form of a grid between the first and second functional layers.

The invention is illustrated by drawings.

Figure 1 shows a schematic depiction of the printing form, having the means to break the paint layer and the redistribution of ink in the printing elements in the form of a ribbed structure on the surface of the second layer (transverse to the direction of the ribbed protrusions patterns section).

figure 2 - schematic representation of the printing form, which means to break the paint layer and the redistribution of paint made in the form of a grid or mesh structure

figure 3 - schematic representation of the printing form, having the means to break the paint layer and the redistribution of paint in the form of a grid with channels in the second layer,

figure 4 schematically shows a printing form, having the means to break the paint layer and the redistribution of paint in the form of a ribbed structure on the surface of the first layer (transverse to the direction of the ribbed protrusions article shall ucture incision),

figure 5 shows a schematic depiction of the printing form, having the means to break the paint layer and the redistribution of paint in the form of a ribbed structure on the surface of both layers

figure 6 - schematic representation of the printing form, having the means to break the paint layer and the redistribution of paint in a honeycomb structure with channels

7 - section a-a in figure 5,

on Fig - section b-B figure 6,

figure 9 schematically shows a printing form, having the means to break the paint layer in the form of a granular structure, the cross-section,

figure 10 is the enlarged image of the surface of the first layer and the second layer at the boundary layers

on 11, 12 shows a scheme illustrating the possible devices for carrying out the proposed method of printing using the proposed printed form.

The printed form contains at least two functional layers 1 and 2. The first functional layer 1 is made through a point or line of printing elements 3 having the minimum size and width, and the second functional layer 2 is essentially the basis of the printing form. Layer 1 may contain end-to-end spot print elements 4 with a larger than size a, size b width. Transfer colorful images directly to the printed material, the particular paper 5, at the expense of pressure in the area of printing, for example, by means of the presser plate 6.

To obtain the effect printing, typical metallographic printing important documents (embossed structure of the paper, the print with discernible to the touch relief structure, sealing and smoothing the surface of the valuable document), the pressure is selected in the range of 3-8 kg/mm2.

According to the invention to give a fine-grained structure of the ink in printing the elements 3, 4 in the printing process of the printing form in the border region 7 between the layers 1, 2 is medium 8 to break the paint layer and the redistribution of ink in the printed elements.

Presented in figure 1 of the printing form means 8 are in the form of ribbed structure or parcel ribbed patterns on the surface of the second functional layer 2 on the border of the 7 layers 1 and 2, with a constant t1and/or variable pitch of the projections 9, which are formed are made in the layer 2 grooves 10.

Tool to break the paint layer and the redistribution of paint between end-to-end printing elements 3, 4 can be made in the form of a ribbed structure or portions of the ribbed structure with a constant t1and/or variable pitch of the projections 9 formed on the surfaces of both layers at the boundary 7 between the layers (5, 7). This design provides excellent which ensures a better distribution of the ink, as the paint can be distributed in two directions in the profile grooves 10, forming the protrusions 9 a ribbed structure, the first and second functional layers 1 and 2.

For the adjacent printing elements in the General case, the plot of a ridge structure formed of at least two grooves 10 in one of the functional layers, open to the inner surface of another layer, informing the cavity, at least, these neighboring printing elements due to the formation of closed layers on the border of the 7 channels to redistribute paint. Adjacent side walls of adjacent grooves 10 form a ledge 9 ribbed structure, the top of which is adjacent the line of contact of the surface of the inner side layer 1.

The distance t1between vertices of adjacent protrusions 9 or step ledges ribbed structure is preferably less than the width of a bar and/or dot printing element 3, which provides for printing a guaranteed break the paint layer, at least one top protrusion in the printed item 3.

Rib structure may have a systematic structure or parts of different systematic structure in the sense that the location and geometry of the protrusions may be subject to certain dependencies. In particular, the finned structure exposed in the field, for example, spot color printing is the 4 ways can have a bitmap structure. This allows more image effects imprint spot elements.

The protrusions 9 a ribbed structure can be oriented in the direction of the greatest length of the area occupied by the printing element 4 or a group of printing elements 3 and 4, forming a complete semantic fragment.

The depth h of the gaps 10 between the projections 9 is preferably larger than the distance between them or step ledges that provides the best conditions for the rupture of the paint layer.

Rib structure or, at least, the plot ribbed structure can be formed on the inner surface of the first layer 1 (figure 4), and on the inner surface of the second layer 2 on the boundary layer in the areas exposed, for example, circuit elements 4 formed raster structure or surface.

Such embodiment few impairs the ability of the printing form to reduce the graininess of paint in the process, but provides additional image effects imprint spot elements to protect the printed image from a fake.

For the same purposes rib structure or, at least, the plot ribbed structure can be formed on the inner surface of the first layer 1 on the border of 7 layers, and on the inner surface the second STI layer 2 may be formed of linear raster structure. When this frequency raster patterns preferably coincides with the step t1protrusions 9 ribbed patterns, and projections ribbed structure is preferably in contact with the protrusions raster patterns formed by the gaps between the lines.

Figure 2 and 3 show a printed form that contains as a means 8 for rupture of the paint layer and the redistribution of paint between end-to-end printing elements of the first layer 1 grid (or layer mesh structure)formed by interlacing yarns 11, located increments of t2. Step t2largest is selected smaller than the width and the printing element 3 to provide a printing gap of the paint layer on the minimum size and dashed or dot printing element 3, at least one filament 11.

On the inner surface of the second functional layer 2 can be provided with channels 12 (Fig 3) to improve the redistribution of paint between the printing elements 3, 4. The channels 12 can be placed in increments of t3equal to t2, so that the channels formed by the protrusions 13 served as a support for threads 11 of the grid.

On 6, 8 shows a printing form, in which the means for breaking the paint layer and the redistribution of ink in the printed elements 3, 4 are made in the form located between layers 1 and 2 layer have its cellular structure, - through cell 14 and the partition 15 between them. Mesh layer is made with 16 channels, informing the hollow cells 14 in the plane of the layer. The channels 16 may be located in a cellular layer at the boundary with the first and/or second functional layers 1, 2. Perhaps another embodiment of the channels in which they are arranged on the inner surfaces of the first and/or second functional layers 1 and 2. The size of the cells 14 are selected so as to provide a gap of the paint layer in the printed element 3 by means of partitions between adjacent cells 14, i.e. the cell size should be no larger than the size of A.

Figure 9 shows another variant of embodiment of the printing form, in which the inner surfaces of the first and second functional layers 1, 2 form a large grain structure with protrusions 17, 18.

The printed form may contain on the first functional layer 1 sub-layer 19, for example, in the form of precipitated Nickel to increase the run length of the printing form.

Through the above-described printing forms implemented method of printing in which the printing process in the print area to create a pressure in excess of the value of the yield strength of the printed material.

In the printing process using the claimed printing forms through the printing elements is filled with the tsya paint in a known manner, for example, as is done in gravure printing and, in particular, when metallographic printing. After applying ink to the printing plate, the excess is removed by means Vechernij devices.

The nature of what is happening when you print processes described in the printed form can be shown on the example of flat printing in which the printing material paper 5 pressure above limit its fluidity is pressed by the plate 6 with the elastic clamping surface to print form (figure 1).

The paper is partially pressed into the filled ink printed items 3, 4, and paint, located in between the protrusions 9 ribbed patterns and pressed in the print element of the paper is compressed with the change of the dispersed patterns of paint on smaller due to the rupture of the paint layer on the protrusions 9 a ribbed structure.

Along with the rupture of the paint layer is a redistribution of ink between adjacent printing elements. It provides an exception spray paint on whitespace elements, as it may be, for example, using printed forms gravure printing, when an excessive amount of paint in-depth printed item zadumivaetsa" paper under the action of pressure.

For the design of printed forms, presented at the Phi is .1 and figure 4, redistribution of paint between the printing elements will be essentially in only one direction - in the direction of the depressions 10.

In printed form, having a ribbed structure as in the first 1 and second 2 layers, redistribution paint will occur respectively in two directions - the hollows ribbed patterns, respectively, 1 and 2 layers (5, 7).

Printed forms with mesh or granular structure (figure 2, 3, 10) redistribution colors will be in different directions, and forms containing a honeycomb structure, the direction of the redistribution of the paint depends on the organization of messages between cells.

Subsequent separation of the paper from the printing form was up to this point in the printed elements of the paint remains on the surface of the paper. The resulting print has a colorful layer formed by short thread" and includes spaced apart printed lines and/or areas (die).

Under the action of pressure, as with metallographic printing paper 5 is additionally subjected to embossing, and its reverse side gets relief structure.

When a sufficient depth of printing elements 3, 4 depending on the thickness d of the layer 1 on the paper as a result of its stamping and transfer it paints the result is a print with a distinct touch of relief structures is th. Available from image areas of the paper are in the process of printing, sealing, and anti-aliasing.

As the printed material can be any suitable for the manufacture of valuable documents material.

Similarly, the printing process can be carried out using the grid or mesh structure as a means to break the paint layer and the redistribution of ink in the printed elements (figure 2). In this case, the paint is pressed to the printing element of the paper by the pressure of the elastic presser plate 6, is compressed with the change in the structure of the paint due to the rupture of the paint layer on the threads 11 of the grid. Along with the rupture of the paint layer on the threads of the mesh, there is a transfer of ink between adjacent printing elements 3, 4 in the gaps formed by the interweaving of the threads 11, and additionally is made for this purpose, the channels 12 (Fig 3).

Printed forms containing layers of mesh or honeycomb structure can be manufactured, for example, according to the traditional technology of production of screen printing forms of solid materials with attached mesh. The form can be obtained on the metal cut-out basis, or in a similar way, while the first and second functional layers are attached to the grid or mesh layer with obey the parties, providing necessary strength.

Such printing plates can be obtained by increasing metal, such as Nickel, on the parts of the mesh or porous layer with the formation of end-to-end printing elements and the subsequent attachment of such a "sandwich" to the material of the second functional layer mesh or mesh layer, or in another convenient technological sequence.

Device for printing, which can be implemented in the way presented on 11 and 12.

Printing plate 20, made according to one of the above options is set on the plate cylinder 21. Applying ink to the printing plate 20 is colorful roller 22. The transfer plate image from the plate cylinder 21 on the paper 5, located on a printing cylinder 23 may be accomplished in one cycle, and the excess paint is removed using, for example, the squeegee 24 (11).

On Fig shows a diagram of the printing device, whereby the ink on the plate cylinder 21 is transferred using colorful roller 25, which causes the paint on the pattern 26 that is designed to sample its submission to the printed form. Excess paint is removed from the form viserny device 27.

The ink in the printed items 3 and 4 of the printing form can be carried out and the usual screen printing fashion PR is Fig printed surface side. This can be used gaps 10 between the projections or channels 12, or specifically designed for paint flow channels communicated with the mentioned intervals of 10 or channels 12.

1. Printed form containing at least two functional layers, the first of which is made through printing elements for transferring color images directly on the printed material, and located on the border between the layers tool to break the paint layer and the redistribution of ink in the printing elements while pressing them in paint under pressure printing.

2. Printing form according to claim 1, in which the means for breaking the paint layer and the redistribution of ink in the printed elements are in the form of a layer of the honeycomb structure between the first and second functional layers, with the porous layer is made with channels, informing the cavity of the cell.

3. Printing form according to claim 1, in which the printing elements of the first layer include point and/or line and/or spot printing elements.

4. Printed form containing at least two functional layers, the first of which is made through printing elements for transferring color images directly on the printed material and the means to break the paint layer and the redistribution of ink in the printed e is the elements during indentation in them paint under pressure printing made in the form of ribbed structures or areas formed on the surface of the inner side of the same and/or another functional layer at the boundary between layers.

5. Printing form according to claim 4, in which the printing elements of the first layer include point and/or line and/or spot printing elements.

6. Printing form according to claim 5, in which the distance between vertices of adjacent protrusions ribbed structure is less than the width of the bar and/or dot printing element.

7. Printing form according to claim 4, in which the rib structure or sections of ribbed patterns are constant and/or variable step ledges.

8. Printing form according to claim 4, in which the rib structure or parts of a ridge structure formed on the surfaces of the inner sides of both layers.

9. Printing form according to claim 4, in which the intervals between the projections of a ridge structure is formed by the profile grooves.

10. Printing form according to claim 4, in which the plot of a ridge structure formed of at least two grooves in one of the layers exposed to the surface of the inner side of the other layer at the boundary between layers, and informing the cavity, at least two adjacent printing elements, and interconnecting the side walls of the grooves form a ledge ribbed structure, the top of which is adjacent line to the inner surface the second side of another layer.

11. Printing form according to claim 4, in which the rib structure or the plot of a ridge structure formed on the surface of the inner side of the second functional layer on the interface between the layers.

12. Printing form according to claim 4, in which the rib structure has a systematic structure.

13. Printing form according to claim 4, in which the rib structure has lots of different systematic structure.

14. Printing form according to claim 4, in which the rib structure of the second layer, open in the field of printing elements is a raster structure.

15. Printing form according to claim 4, in which the depth of the gaps between the projections ribbed patterns more distance between them.

16. Printing form according to claim 4, in which the rib structure formed on the inner surface of the first layer, at the boundary between layers, and on the inner surface of the second layer in the areas exposed by the printing elements formed of the skin.

17. Printing form according to claim 4, in which the rib structure or at least a section of a ridge structure formed on the surface of the inner side of the first layer and on the surface of the inner side of the second layer formed of the linear raster structure, with frequency raster pattern matches the pitch of the projections ribbed patterns, and projections ribbed patterns made contact with the AMI raster pattern, educated gaps between lines.

18. Printed form containing at least two functional layers, the first of which is made through printing elements for transferring color images directly on the printed material, and means for breaking the paint layer and the redistribution of ink in the printing elements while pressing them in paint under pressure from the press, made in the form of a grid between the first and second functional layers.

19. Printed form on p, at which the printing elements of the first layer include point and/or line and/or spot printing elements.

20. Printed form on p, which on the surface of the inner side of the second functional layer on the border with grid made of parallel grooves forming the protrusions intended as a support for threads weave mesh.

21. Printing form according to claim 20, in which the step of the grid cells and the step of grooving the same.

22. Printing form according to item 21, in which the grid spacing and pitch of the grooves does not exceed the minimum width of a bar and/or dot printing element.

23. Printing method, consisting in the transfer plate image on the printed material, in which the seal shall be implemented by a printed form containing at least the first functional layer is about end-to-end printing elements for transferring color images directly on the printed material, the second functional layer, and means for breaking the paint layer and the redistribution of ink in the printed elements on the boundary between the layers when the penetration of the ink into the printing elements under the pressure of printing, in the printing process in the print area to create a pressure in excess of the value of the yield strength of the printed material.

24. A printing method according to item 23, characterized in that the seal is realized by means of the printing form, having the means to break the paint layer and the redistribution of ink in the printed elements on the boundary between layers in the form of ribbed structures or areas formed on the surface of the inner side of the same and/or another functional layer at the boundary between layers.

25. A printing method according to item 23, characterized in that the seal is realized by means of the printing form, having the means to break the paint layer and the redistribution of ink in the printed elements on the border between layers in a grid between the first and second functional layers.



 

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7 cl, 5 dwg

FIELD: graphic arts industry, in particular, processes for manufacture of protected graphic product with protected member for controlling authenticity of said product.

SUBSTANCE: method involves applying polymeric film material thread having central part and edge zones onto net of netted cylinder of papermaking machine; providing dehydration during forming of paper pulp layer and pressing thereof; before applying of thread onto netted cylinder net, deforming at least one edge zone of thread. Protective member for controlling authenticity of protected graphic products and paper with protective member are manufactured according to said method.

EFFECT: improved workability of protective member during introducing it into paper pulp and simplified process for manufacture of protective member and paper.

15 cl, 5 dwg

FIELD: printing arts; printing inks for securities; protection against falsification.

SUBSTANCE: proposed printing ink contains pigment possessing protective properties, binder and thinner; pigment contains ultra-dispersed powder of rare-earth ferrite-garnet selected from group including Y3Fe5O12, Ln3Fe5O12, YxLn3-xFe5O12, where Ln is rare-earth element, 0≤x≤3, Y3-xBixFe5O12, where 0≤x≤2 with sizes of crystallites not exceeding 100 nm in the amount not exceeding 85% of weight of ink. Optical characteristics are extended within 380-750 nm and infrared transparence is increased within 0.74-3.0 mcm.

EFFECT: enhanced identification due to magnetic properties.

8 dwg, 1 tbl, 3 ex

FIELD: the invention refers to a multiplayer body.

SUBSTANCE: the multi-layer body fulfilled as a carbon film preferably as hot stamping film or as laminated film consists of layer structure formed with a substrate, a layer sensitive to laser emission where layered structure has one background layer which serves for laser emission as reflective and/or opaque , and/or absorbent which is correlated with a layer sensitive to laser emission. The background layer is located in one partial field on the side inverted to the layer sensitive to laser emission and provides so that laser emission does not pass or pass in a very insignificant degree into the layers below the background layer so that sufficient destruction of the substrate is averted under influence of used laser emission.

EFFECT: creation of multi-layer element that ensures possibility of forming exceptionally accurate and many-sided marking induced with laser.

18 cl, 10 dwg

FIELD: printing technique.

SUBSTANCE: set and method of printing can be used for printing light-absorbing signs of protection of printed items. Set of printing ink for printing of light-absorbing signs has at least two dyes. Any dye has at least one dyeing matter, pigment of dye which absorbs visible light. Set of printing inks has first and second groups of dyes. Dyes from first group additionally have mark with preset spectral absorption characteristic, preferably with characteristic relating to absorption. Mark has absorption maximum within wavelength range of 700-900 nm, preferably, 780 nm, and the mark practically doesn't absorb light within visible spectrum of absorption. Dyes of second group has dyeing matter, dye or pigment, which absorbs light within visible light spectrum and they have the same maximum of absorption within IR-red spectrum at wavelength around 700 nm as spectral characteristic within IR-red range of mark, Method of printing signs, printed item and set of dyes, including four-color set of printing inks and IR-mark, are described.

EFFECT: reliability of identification of authenticity of item independently on color of signs.

15 cl, 5 dwg, 2 app

Protective element // 2290316

FIELD: protective elements.

SUBSTANCE: protective element has base, onto which first cover of magnetic material forming first code is applied and second cover of electro-conductive material forming second code, and also provided with third, optically readable code, which are least at local portions is formed by third cover of non-magnetic and non electro-conductive material, which cover separate portions of protective element not covered by first and/or second cover. All three of aforementioned covers indistinguishable from one another by the unaided eye. Proposed invention also concerns document, banknote, protected from forgery, and also method for manufacturing protective element.

EFFECT: creation of protective element, all protective signs of which can not be seen without special equipment and which can be simple and inexpensive to make, and also allows highly reliable authenticity check.

5 cl, 6 dwg

FIELD: multi-layered images.

SUBSTANCE: layered structure has layer sensitive to laser radiation, which is altered by laser effect and forms at least one portion of multi-layered image on part from part of image induced by laser and background layer and/or foreground layer. Part of image induced by laser is positioned so, that it at least partially overlaps with background layer and is at least partially overlapped by foreground layer. Material, sensitive to laser radiation, is made as mixture of various components sensitive to laser radiation, while the mixture is composed of two, preferably three different dying components, preferably components of pigments and/or color-forming dyes. Each one of these two or three components can be whitened by means of laser under appropriate certain conditions of laser radiation.

EFFECT: high degree of protection from forgery.

25 cl, 84 dwg

FIELD: protective element, having a composition of optically efficient structures in layered composite.

SUBSTANCE: protective element contains a layered composite for gluing onto substrate, containing form-making layer, protective layer of plastic material and reflective layer, which is positioned between form-making layer and protective layer of layered composite, while optically efficient structures of protective sign are formed in reflective layer. Protective sign has at least one surface with optical information element, on which reflective layer is made in form of mirror macro-structure with smooth profile, which in partial areas, forming relief display of information, is made curved so, that adjacent points with extreme values relatively to height of macro-structure profile are distanced for at least 0,3 millimeters. Point of macro-structure never has angle ±γ of local inclination of tangential surface to macro-structure, which angle is measured relatively to the surface of layered composite, greater than 7°. Surface with macro-structure is adapted for deflecting light, which falls in parallel manner at angle α relatively to normal onto surface of layered composite within limits of previously given angular range ε 14° around direction of mirror reflection, which includes angle (β=α) of reflection with normal line, so that element of optical information is visually visible, but can not be photo-copied.

EFFECT: high level of protection from photo-copying.

2 cl, 7 dwg

FIELD: manufacturing multi-layered films.

SUBSTANCE: film comprises base made of bi-axially oriented polypropylene film and polyolefin film. Before laminating, the polyolefin film is colored. The multi-layered film is oriented in transverse direction or longitudinal direction and transverse direction after laminating. The thickness of the multi-layered film ranges from 8 μm to 26 μm. The method of producing the multi-layered film is also presented.

EFFECT: expanded functional capabilities.

9 cl, 3 ex

FIELD: printing industry.

SUBSTANCE: proposed storage medium with half-tone image in engraving style produced by method of intaglio printing, i.e. presented by irregular linear structures, consists of repeated printable structural elements. Fine structure present within the limits of structural elements in from of spaces are partially applied to structural elements.

EFFECT: provision of complex design, high protection from counterfeit.

36 cl, 16 dwg

FIELD: engineering of blanket units for offset cylinder of rotation printing machine and method for manufacturing the same.

SUBSTANCE: blanket unit has carrying plate (02) and blanket sheet (03) clamped on external side of carrying plate. Head and/or tail end of carrying plate may be held on the cylinder by bent side (04; 06), free of blanket surface, on offset cylinder. Filling mass (13; 14) is positioned between inclined edge and internal side of blanket surface. Filling mass may be applied onto carrying plate with following clamping of blanket surface. Filling mass may also be injected between the plate and blanket surface clamped on it.

EFFECT: ensured transfer of printing paint onto imprinted material with good quality in zone of gap between ends of blanket sheet enveloping the cylinder.

3 cl, 12 dwg

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