Media, printing form, the method of its manufacture, and method of metallographic printing sealing adjacent to each other surfaces of the solid colorful layers of different thickness

 

The proposed group of inventions relates to the printing industry. Proposed storage medium having at least one first continuous sealed surface with thickness (Da) paint layer and at least one adjacent to this first sealed surface, the second continuous sealed surface with thickness (Db) paint layer. The thickness of the paint layers are different. Continuous sealed surface immediately adjacent to each other and separated from each other clearly, not visible to the naked eye boundary line, in the area of this boundary line thickness of paint layers both solid sealed surfaces is minimal. The proposed printed form designed to obtain adjacent to each other continuous sealed surfaces, and method of its manufacture. A distinctive feature of the printing form is that between the first and second engraved areas is a partition, the upper edge of which has a pointed shape and ends at the level of the surface of the printing form. A method of metallographic printing to obtain adjacent to each other continuous sealed surfaces with A invention allows to obtain a document image, small details which it would be impossible to reproduce. 4 N. and 18 C. p. F.-ly, 3 ill.

The present invention relates to recording media obtained by the method of metallographic printing a printed image having at least one first continuous sealed surface with a first thickness of the paint layer and at least one adjacent to this first sealed surface, the second continuous sealed surface with the second ink layer thickness, the thickness of these layers of paint are different. Such media are known, e.g. from GB 1390302.

The invention relates also to a printed form designed to obtain adjacent to each other continuous sealed surfaces and having a surface and engraved in the surface of at least one of the first engraved area with the first engraving depth and at least one adjacent to this first engraved area of the second engraved area with the second engraving depth, the depth of the engraving is different. The printed form of this type is known for example from GB 1320615.

The invention relates further to a method of metallographic printing for boakai way metallographic printing known, for example, from GB 1390302.

The invention relates, furthermore, to a method of manufacturing a printed form to obtain adjacent to each other continuous sealed surfaces with different thickness of the paint layer, namely, that prepare the workpiece for a printed form with the appropriate surface and then on the surface of the blank printing plate engrave the first section with the first engraving depth and a second section with a second depth of the engraving. A method of this type is known, in particular from GB 1320615.

A characteristic feature of the technology of the manufacture of printed forms gravure printing is the removal of material from the surface of the printing form on its printing, i.e., providing ink transfer areas corresponding engraving tool or etching. The finished printing plate is applied printing ink, and the surplus before actual printing process is removed from the surface of the printing form by a squeegee or wiping roller, with the result that ink remains only in the recesses. Then to print form pressed basis, usually paper, which is then separated from this printing plate, and the paint sticks to the surface of the substrate, forming on naona adjust change the thickness of the applied layer of paint.

Conventional gravure printing is divided into autodeploy gravure printing and metallographic printing. Printed forms for autodeploy gravure printing is made, for example, electron beam, laser beam or a chisel. A characteristic feature autodeploy gravure printing is that to convey various shades of gray and color tone in the printed image due to the orderly layout in printed form printing elements in the form of cells of different density, size and/or depth.

Metallographic printing, primarily with steel printing plates, called in this case, engravings, is the underlying technology of printing media, primarily securities, such as banknotes, etc., unlike other common methods of printing such as offset printing, metallographic printing allows drawing on the media paints a very thick layer. Obtained by metallographic printing a relatively thick layer of paint is the easiest sign of authenticity or protective element, easily recognizable to the touch even a layman. Such a sign of authenticity cannot be forged by copying, making the method meta is receiving impressions accordingly, the printed image printed forms perform deepening in the form of lines. Mechanical production of printed forms for metallographic printing because of the generally conical narrowing of engraving tools with increasing depth of etching is increased line width. In addition, with increasing depth of etching is increased and the amount of viraemia engraved paint line, and thus the opacity of the printed line. In the manufacture of printing forms for metallographic printing etching its not printing the parts covered with a chemically inert lacquer. In the subsequent etching on not varnished surface shape formed by etching, the depth and width forming which lines depend primarily on the duration of etching.

From WO 97/48555 known way using a machine to produce printing plates for metallographic printing certain parties. To this end, in the computer, you enter the location of the dashed lines on the figure, as the original, and just set the area of each individual line. After this engraving tool, for example a rotating chisel or laser beam, a first engraved outer contour rnost the same or a different engraving tool is removed the material results in the entire line, precisely engraved in accordance with dashed original. However, depending on the type of engraving tool and control its movement bottom surface at the site where the removed material is given a certain roughness or unevenness, ensures retention of the printed ink.

There is also the possibility vygravirovany within the first etched surface of the second etched surface greater depth, resulting in the impression, respectively, of a printed image due to the different thickness of the layer deposited on the basis of colors, will be adjacent to the other surface on which paint, respectively, the color will vary in intensity. However, after the printing process, the differences in thickness are erased, because the ink on these solid sealed surfaces are merged, resulting in the impression there is no clear visually distinct boundary between these surfaces, so play that way fine detail the structure of the image is impossible.

Based on the foregoing, the present invention was based on the task of developing appropriate measures, which would be obtained with metal distinct border.

In respect of the recording media obtained by the method of metallographic printing a printed image having at least one first continuous sealed surface with a first thickness of the paint layer and at least one adjacent to this first sealed surface of the second continuous sealed surface with the second ink layer thickness, the thickness of these layers of paint are different, this problem is solved due to the fact that the first and second continuous sealed surface immediately adjacent to each other and separated from each other clearly, not visible to the naked eye boundary line, in the area of this boundary line thickness of paint layers both solid sealed surfaces is minimal.

In one of the embodiments proposed in the invention of the information carrier preferably, the minimum thickness of the paint layer was practically equal to zero. According to another variant of the proposed invention in media continuous sealed surface preferably in the form of lines or surfaces. The first and/or second continuous sealed surface can predstavleniya adjacent to each other continuous sealed surfaces and having a surface and engraved in the surface of at least one of the first engraved area with the first engraving depth and at least one adjacent to this first engraved area of the second engraved area with the second depth of the engraving, the depth of engraving different underlying the invention the task is solved by the fact that between the first and second engraved areas is a partition, the upper edge of which has a pointed shape and ends at the level of the surface of the printing form.

Such offer in the invention of the printing form, the angle of inclination of the side surfaces of the partitions relative to the perpendicular conducted to the surface of the printing form, is preferably from 15 to 60, more preferably from 30 to 50. In accordance with one of the embodiments proposed in the invention of the printing form first and second engraving depth is preferably from 5 to 250 μm, more preferably from 5 to 150 μm. According to another variant of the proposed in the invention of the printing plate engraved areas are formed by recesses in the form of lines or surfaces. Preferably next to the offer in the invention of the printing form its first and/or second engraved areas formed illustration, graphic symbol, or font character. In addition, the bottom surface of the first and/or second gruberova the main distinctive feature of the invention is what to get adjacent to each other continuous sealed surfaces corresponding to these surfaces engraved areas of the printing form are separated from each other by a partition, which is at the level of the surface of the printing plate ends sharpened edge. When receiving via a printed form of the imprint on the storage media, for example on the banknote, are formed adjacent to each other continuous sealed surface, colorful layers which have a minimum thickness in the boundary area.

In the ideal case, the thickness of the paint layer on the boundary line between solid sealed surfaces is equal to zero. However, if the ink adjacent to each other continuous sealed surfaces are connected directly in the boundary zone, the specified thickness may be somewhat greater than zero and above all in the case when the partition has a steep side surface with a small angle of inclination. With the increasing shallowness of the side surfaces of the specified partition increases the smoothness with which the thickness of the paint layer in the boundary area is changed in the direction of the minimum. Thus, there is a possibility to receive between adjacent to each other solid sexless boundary line, which may serve as an additional hidden protective element or attribute that is not visible to the naked eye when viewed normally.

Using the proposed invention for the first time it was possible to obtain with metallographic printing directly adjacent to each other continuous sealed surfaces with different thickness of the paint layer that are not merged and are clearly separated from each other.

By varying the depth of the engraving, so by using the same ink you can change the color tint. When using commercially available paints for metallographic printing engraving depth in the range of about 5-60 microns allows you to get the colorful layers that are mostly perceived as translucent, semi-transparent. While light colors usually have a higher degree of transparency than dark. Conversely, when the depth of the engraving in the range of about 60-100 μm obtained colorful layers look more like coverts. Thus, using, for example, three different semi-transparent printing inks in combination with engraved only with two different depth values on the same imprint in one stage picturesfree to receive the sealed document also clearly visible on the touch colorful layers, and therefore proposed in the invention of the printing form can be used not only to focus on creating a certain visual color impression of the sealed document, but intentionally alter its tactile quality.

In the invention it is also proposed a method of metallographic printing to obtain adjacent to each other continuous sealed surfaces with different thickness of the paint layer, which apply the proposed invention and the above-described printed form.

The object of the present invention is also, as stated in the beginning of the description, a method of manufacturing a printed form to obtain adjacent to each other continuous sealed surfaces with different thickness of the paint layer, namely, that prepare the workpiece for a printed form with the appropriate surface and then on the surface of the blank printing plate engrave the first section with the first engraving depth and a second section with a second depth of the engraving. This method differs according to the invention in that the first and second sections engrave so that between the first and second engraved areas remained peregorodochnye areas are preferably formed by recesses in the form of lines or surfaces.

In one embodiment, the implementation of this method partitions are supposed to be performed so that the angle of inclination of the lateral surfaces relative to the perpendicular conducted to the surface of the printing form, ranged from 15 to 60, preferably from 30 to 50.

In the implementation proposed in the invention method for engraving, it is preferable to use an engraving tool with a corresponding angle of its sides. At the same time as such a tool for engraving, it is advisable to use a rotating chisel pointed shape.

In addition, when the implementation of the proposed in the invention method, preferably next to the engraving depth ranged from 5 to 250 μm, more preferably from 5 to 150 μm.

In accordance with another embodiment of the proposed invention in the way of the bottom surface at the first and/or second cuts plots preferably with a rough figure.

According to another variant proposed in the invention method on the surface of the printing form engraving multiple adjacent to each of the first sections and one Ieremia plots and/or second, respectively, a few second cuts plots, it is preferable to arrange in the form of a drawing, a graphic symbol, or font of the sign.

Below the invention is described in more detail on the example of some variants of its implementation with reference to schematic drawings, in which without observance of proportionality, in particular in the ratio of the thickness of the layers shown:

in Fig.1 - fragment of the printing form in cross section;

in Fig.2 is a schematic depiction in cross section of a fragment of the information carrier with the two adjoining to each other colourful layers of different thickness and

in Fig.3 is a depiction in cross section of a fragment of the information carrier with the two adjoining to each other paint layers.

In Fig.1 shows the profile of the printing form 1, on the surface 2 of which is engraved the first engraved area 3A with depth taengraving and second engraved area 3b with the second depth tbthe engraving. Both of these engraved plot 3A, 3b immediately adjacent to each other at the level of the surface 2 of the printing form, and the rest are separated from each other by a partition wall 5, the upper edge 6 which has a pointed shape and ends at the level of the surface of the e, i.e., a few micrometers below the surface 2 of the printing form. The lateral surface of the engraved sections 3A, 3b are simultaneously and side surfaces of the partitions and are inclined at some angle formed by perpendicular conducted to the upper edge 6. In Fig.1 shows only the angletilt the right side of the septum, as in this example, both side surfaces have the same angle of inclination. However, the angles of each of the side surfaces of the partition 5 may be different. These angles can range from 15 to 60, preferably from 30 to 50.

As shown by comparative tests, the printing form with the preferred angles of the side surfaces of the partition walls constituting from 30 to 50have from the point of view of the technique of printing higher properties. Such properties include a clear outline of the printed image and a lower propensity to so-called spray paint, leading to the appearance of the printed image sealed parcel with blurred or indistinct contours or edges.

Bottom powerpunk (7b), giving roughness. Having such a rough figure, it is preferable for the reason that in this case, the printing ink is more firmly held bottom surface of the engraved areas. Engraved areas 3A, 3b, respectively, may also be sostrates down and not be in the bottom surface 7a, 7b, respectively (not shown).

The depth t of engraved areas 3A, 3b is from 5 to 250 μm, preferably from 5 to 150 μm.

Engraved the plates can also be used for reproduction of printed forms with all those conventional methods of manufacturing the secondary form, which is used to produce printing plates for metallographic printing. This engraved original reproduce multiple copies using the appropriate intermediate stages and only obtained with the original secondary forms are used as printing plates. Engraved deepening with the preferred values of the angle of inclination of the lateral surfaces and depth proved to be optimal for use as originals in such mandatory operations, technology for the production of copies, as forming on them and alienate them from secondary forms.

In Fig.2 schematically in USIM two continuous sealed surface 12A, 12b. This carrier 10 information was printed by the method of metallographic printing using the printing plate 1 shown in Fig.1. In the process of printing media 10 information pressed into the engraved areas 3A, 3b, while on the bottom side 17 of the carrier information on the sections 11a, 11b can remain relevant permanent deepening. On the upper side 15 of the carrier of the information in these sections 11a, 11b have respective protrusions that are closed layers 13A, 13b of the ink transferred on the upper side 15 of the information carrier of the engraved areas 3A, 3b. Surface paint layers 13A, 13b form a continuous sealed surface 12A and 12b. The thickness of DaDbcolorful layers is determined by the distance from the sealed surface of the base to the upper side of the respective solid sealed surfaces 12A, 12b. On the edge plot of thickness Daand Dbcolorful layers continuously decreases up to a certain boundary line formed by the top edge 6 of the partition 5 of the printing form 1. Depending on the selected anglethe inclination of the side surface of the partition and the depth t of the engraving is formed at a boundary area respectively In the Xia, the appropriate choice of this angletilt allows you to obtain the boundary line of bright color tones, not visible to the human eye without auxiliary means.

In the ideal case, the thickness Daand Dbpaint layers on the boundary line is reduced to its minimum value of zero. However, between the sealed surfaces 12A, 12b are permissible small one paint layer to another, which, however, should not lead to discernible mixing of paints, colors respectively.

In the form shown in Fig.3 embodiment provides such a transition from one layer of paint to another. While the drawing shows that a continuous sealed surface 12A and 12b are connected to each other at the boundary line 16.

Colorful layers 13A and 13b may consist of printing inks of different colors, as proposed in the invention, the design of the printing form is almost completely eliminates the mixing of paints from different parts of the engraving. The use of the same adjacent to each other engraved parts 3A, 3b of varying depth taand tbthe same translucent paint allows you to get the impression colorful layers 13A and 13b various zwei or surfaces. These recesses preferably engraving rotary chisel, angle of inclination of the lateral sides of which corresponds to the desired angle of the side surfaces of the partitions. In another embodiment, engraving chisel, you can move on trajectories, forming two groups of lines. When this curves or straight lines of one group are parallel to each other and intersect at uniform intervals with curves or straight lines of the second group. As a result, the bottom surface of the engraving is formed a rough figure on the raster type with intersecting lines, providing the most effective hold paint.

In a preferred embodiment, the chisel has a pointed shape or a special circuit that allows you to get to the bottom surface of the engraving rough figure that holds the paint. To this end, the chisel is moved parallel to the pre-etched track, shifting the chisel with each pass at a small constant value, and in this way expand pre-engraved with the deepening of this magnitude. The engraving depth is from 5 to 250 μm, preferably from 5 to 150 μm.

The preferred angle for the sides, dostavljenom very high print quality, provide engraved printed form. The tools and the inclination of the lateral sides 30most suitable for engraving particularly thin, filigree and small structures, whereas engraving larger, large structures, it is preferable to use the tools and the inclination of the lateral sides 40 to 50.

One or more indentations made in the form of line or surface, can be a drawing, a graphic symbol or font character. Multiple adjacent to each other of the recesses may form a regular raster, making the resulting print will look uniform, and the raster will form in the imprint of small, high-lineature structure, which can be detected only with the aid of a magnifying AIDS.

Claims

1. The carrier (10) information obtained by means of metallographic printing a printed image having at least one first continuous sealed surface (12A) with a first thickness (Da) paint layer and at least one adjacent to this first sealed surface (12A), DaDb) these colorful layers of different, wherein the first and second continuous sealed surface (12A, 12b) immediately adjacent to each other and separated from each other clearly, not visible to the naked eye boundary line, in the area of this boundary line thickness of paint layers both solid sealed surfaces (12A, 12b) is minimal.

2. Media information under item 1, characterized in that the minimum thickness of the paint layer is practically zero.

3. Media information under item 1 or 2, characterized in that a continuous sealed surface in the form of lines or surfaces.

4. Media information under item 1 or 2, characterized in that the first (12A) and/or the second (12b) continuous sealed surface are drawing, graphic symbol, or font character.

5. Printing plate (1) intended to receive adjacent to each other continuous sealed surfaces (12A, 12b) and having a surface (2) and engraved in the surface (2) at least one first engraved area (3A) with the first depth (ta) engraving and at least one adjacent to this first etched section (3A) of the second engraved teaching is personal, characterized in that between the first and second engraved areas (3A, 3b) is the partition (5), an upper edge (6) which has a pointed shape and ends at the level of the surface (2) of the printing form.

6. Printed form on p. 5, characterized in that the angle (a) of inclination of the side surfaces of the partition (5) relative to the perpendicular conducted to the surface (2) of the printing plate is 15 - 60, preferably 30 - 50.

7. Printed form under item 5 or 6, characterized in that the first and second depth (ta, tb) engraving is 5 to 250 microns.

8. Printed form under item 7, characterized in that the first and second depth (ta, tb) engraving is 5 to 150 μm.

9. Printing form according to any one of paragraphs.5-8, characterized in that the engraved areas are formed by recesses in the form of lines or surfaces.

10. Printing form according to any one of paragraphs.5-9, characterized in that the first (3A) and/or the second (3b) engraved areas form a pattern, graphic symbol or shiftby sign.

11. Printing form according to any one of paragraphs.5-10, characterized in that the first and/or second engraved areas (3A, 3b) have a bottom surface (7) with a rough figure.

12. The way metalloy thickness of the paint layer (DaDb), characterized in that the used printing plate according to any one of paragraphs.5-11.

13. A method of manufacturing the printing plate (1) intended to receive adjacent to each other continuous sealed surfaces (12A, 12b) with different thickness of the paint layer (DaDb), namely, that prepare the workpiece for the printing plate (1) with a corresponding surface (2) and then on the surface (2) of the blank printing plate engrave the first section (3A) with the first depth (ta) engraving and the second section (3b) with the second depth (tb) engraving, characterized in that the first (3A) and second (3b) sections engrave so that between the first (3A) and second (3b) engraved areas remained partition (5), an upper edge (6) which has a pointed shape and ends at the level of the surface (2) of the printing form.

14. The method according to p. 13, characterized in that the engraved areas are formed by recesses in the form of lines or surfaces.

15. The method according to p. 13, characterized in that the partitions (5) perform such a way that the angle () of inclination of the lateral surfaces relative to the perpendicular conducted to the surface of the printing form, for example is causesa fact, for engraving use engraving tool with the appropriate angle () tilt his sides.

17. The method according to p. 16, characterized in that for engraving using a rotating chisel pointed shape.

18. The method according to any of paragraphs.13-17, characterized in that the depth (ta, tb) engraving is 5 to 250 microns.

19. The method according to p. 18, characterized in that the depth (ta, tb) engraving is 5 to 150 μm.

20. The method according to any of paragraphs.13-19, characterized in that the bottom surface (7) on the first (3A) and/or the second (3b) of the engraving sites perform with rough figure.

21. The method according to any of paragraphs.13-20, characterized in that the surface (2) of the printing form engrave multiple adjacent to each of the first sections (3A) and one or more adjacent to each of the second sections (3b).

22. The method according to any of paragraphs.13-21, wherein the first, respectively the first few cuts sections (3A) and/or second, respectively, a few second cuts plots (3b), come in the form of a drawing, a graphic symbol, or font of the sign.

 

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