WO2015197499A1 - Set of documents for transmitting data in a spy-proof manner and production method - Google Patents

Abstract

The invention relates to a set (100) of documents (10, 10', 10", 10''') for transmitting data in a spy-proof manner. Each document (10, 10', 10", 10''') of the set (100) has a first sheet with an interference pattern (1; 1'; 1''; 1''') and a second sheet which is designed to be written with data. The interference pattern (1; 1'; 1''; 1''') of the first sheet is produced such that the interference pattern hinders an unauthorized reading or spying of the data of the second sheet when the second sheet and the first sheet are lying one on top of the other. The interference pattern (1; 1'; 1''; 1''') of each of the documents (10, 10', 10'', 10''') of the set (100) is an individual interference pattern which differs from the interference patterns (1, 1', 1'', 1''') of all the remaining documents (10, 10', 10", 10''') of the set (100).

Description

 description

Set of Documents for the Read-Only Transmission of Data and Manufacturing Methods The invention relates to a set of documents for the selective transmission of data. The invention further relates to a method for producing a set of such documents.

In the case of documents or printed matters sent by post in the form of paper, documents shall also be produced which are used to obtain confidential data, such as

Numbers, passwords, encryption codes, bank card numbers and other personal and / or confidential data. Since these are security-relevant data, the unauthorized disclosure of which can often lead to the risk of considerable damage due to improper use, it is necessary to ensure the confidentiality of this data by post between the sender and the intended recipient. In particular, the confidential data to be sent by post must be protected against unauthorized reading or spying by third parties. It is customary to protect at least that part of a document in which the personal data is printed with an additional security feature. In this case, for example, the document with which the personal data are transmitted is transmitted overall in a sealed envelope which has a disturbing pattern, also called a distraction pattern or obfuscation pattern, on at least one surface or page. Such a disturbance pattern is, for example, a pseudo-random arrangement of printed and unprinted, especially black and white, areas which, when superimposed on the personal data, severely diminish their visibility and thus make it difficult to read as long as the sheet or envelope with the baffle pattern and the sheet The confidential data lie directly on top of each other, as is the case until the letter or document is opened. Furthermore, it is known to provide the document itself, on which the confidential data are communicated and, for example, printed, with a disturbance pattern, for example in a field, ie a partial area in which the data is printed. For example, a personal identification number or PIN number can be covered with a peelable or abradable coating or foil, which in turn contains the interference pattern and thus makes it difficult to read out the data even when the document is illuminated.

While the confidential data to be communicated, e.g. Passwords or PIN codes are naturally different for each document is conventionally used for their concealment while a pseudorandom, but uniform for a variety of printed matters, in particular for all documents of the sentence identical Störmuster. For example, in mass printed matter, the letters which are actually similar and which are intended for different addressees and e.g. are each printed with different PIN codes, provided with dust jackets, coatings or foils on which the printed interference pattern is identical for all addressees.

The disadvantage here is that security gaps remain, in particular in the event that unauthorized third parties obtain several copies of one and the same mass printed matter, for example in the form of fundamentally identical letters, each with different data for different addressees but uniform interference pattern. If, for example, a first, actually confidential document is stolen without authorization from the postal waste and its fault pattern is scanned in high-resolution, the unauthorized third party has a duplicate of the interference pattern of other confidential printed matter. With the aid of suitable image processing software, he would be able to create a difference image between the scanned interference pattern and the fluoroscopic image of another document sent, which overlays the same interference pattern and other confidential data. By means of electronic subtraction, the confidential data within the interference pattern could be deciphered.

It is the object of the present invention to provide a set of documents and a manufacturing method therefor, in which an increased security against unauthorized reading or spying of data is achieved. In particular, it should prevent that unauthorized third parties may draw inferences from other documents which they may investigate unopened or at least non-destructively, using the disruptive pattern of one or more documents already in their possession. This object is achieved by the set of documents according to claim 1 and by the manufacturing method according to claim 11. There is provided a set of documents, each of which comprises a first sheet with a disturbance pattern and a second sheet intended for labeling with data, includes. According to the invention, it is provided that the disturbance pattern of each of the documents of the sentence is an individual disturbance pattern, which differs from the disturbance patterns of all other documents of the sentence. In particular, for mass printing, in which a sheet of paper or other first sheet is printed with largely matching text components or information, but individual addressees, is according to the invention on this sheet or sheet not for the mass printed matter uniform interference pattern, but one for each addressee, ie for each Document individual interference pattern provided. For example, a separate disturbing pattern is printed on each document of the sentence; in the form of a black-and-white pattern in a field where the personal and / or confidential information is to be stored. For this data itself, for example, a second sheet of the document is provided, for example a transparent film which is printed with this data or can be subsequently printed. For example, on the field containing the interference pattern, a transparent film may be placed, which is glued only laterally at an edge outside the field to the first sheet. If the foil of such a document showing the blanking pattern under the foil is printed with the PIN, PIN or other identification numbers on the front of the foil, the identification number is not legible, as long as the first and second sheets, ie the paper sheet and the film are directly adjacent to each other and the entire document is enclosed in an envelope from the outside. Only when the letter is opened and the film is lifted off the interference pattern, the identification number becomes easily legible to the human eye. According to the invention, it is thus provided that a respective individual interference pattern is formed on all documents of this sentence, for example printed on it. With regard to the first impression that such a disturbing pattern offers to the human eye, the appearance of the disturbing patterns may at first glance appear quite uniform, especially since these are often pseudo-random interference patterns anyway. However, the formation of the interfering patterns in detail, in particular the exact arrangement of the printed and unprinted or black and white partial surfaces, is different according to the invention for each interference pattern, ie for each document of the sentence and thus individually. This prevents according to the invention that unauthorized third parties, even if they scan locked documents or procure already sent documents with it provided interference, can no longer draw conclusions on the disturbing patterns and / or confidential data of other documents, even if they do not belong to the same set of otherwise identical documents. As a result, the security achievable with glitches security against unauthorized reading or spying is significantly increased.

Preferred embodiments will be described below with reference to the figures. Show it:

FIG. 1 shows a document for the selective transmission of data,

Figure 2 is a schematic cross-sectional view of the document of Figure 1, Figure 3 is an enlarged cross-sectional view of an alternative embodiment of a document,

FIG. 4 shows a set of documents with individual interference patterns, FIG. 5 shows an example of data to be protected against unauthorized spying.

FIG. 6 shows three exemplary, individually formed interference patterns for securing data against unauthorized spying; FIG. 7 shows a schematic plan view of the surface of a pattern carrier with an overall pattern from whose pattern surface a multiplicity of different interference patterns can be extracted; FIG. 8 shows an alternative or supplementary embodiment to FIG. 7, with individually staggered positions of the individual interference patterns;

FIG. 9 two carrier webs assembled as roll goods with different overall patterns which can optionally be combined as overlay patterns,

FIG. 10 shows an overall pattern of two overlay patterns on a pattern carrier,

11 shows an overall pattern of higher print density than in FIG. 10 from four overlay patterns, FIG.

FIG. 12 shows four schematically overlaid patterns to be combined to form a web-shaped overall pattern, FIG. 13 shows an enlarged partial section of the surface of an individual interference pattern, which is constructed from pattern elements, and FIG

Figure 14 illustrates a method for generating individual noise patterns for a set of documents.

FIG. 1 shows by way of example a single document in a schematic plan view for a set of documents. The document 10 comprises at least a first sheet 11 and a second sheet 12, the first sheet 11 carrying a disturbing pattern 1 and the second sheet 2 intended for labeling with personal or otherwise confidential data 2. The first sheet 11 and the second sheet 12 are in the finished state of the document to each other, but are not permanently glued together over the entire surface, but from each other partially lifted. In particular, the first sheet 11 provided with the disturbance pattern 1 and the second sheet 2 provided with the confidential data 2 can be pulled apart to read the data 2 without being disturbed by the disturbance pattern 1. At least at a later time, for example after removal or otherwise removing a part of one or both blades 11, 12, in particular along one or more edges or edges around a field 8 provided with the interference pattern 1 around, the second sheet 12 with respect to the first sheet 11 is exposed so that the interference pattern 1 no longer hinder easy reading of the data 2. By contrast, until this data is revealed by the later legitimate recipient, the second sheet 12 is immediately on the first sheet 11 at least during the mailing. In this case, the disturbance pattern 1 or a field 8 filled therewith or also the first sheet 11 occupies a total of at least that surface area in which the confidential data 2 are entered or still to be entered on the second sheet 12. A document comprising at least two sheets is provided with a blanking pattern and with data, ie a whole set of such documents or printed matters can be produced in this way, whereby each document not only contains individual data 2, but additionally also with an individually formed disturbance pattern 1 is provided. As a result, it is no longer possible to draw conclusions by comparing two externally identical documents or, in any case, sheets 11 of the respective documents provided with a disturbance pattern. Different patterns of interference here mean the different arrangement of the pattern elements constituting the interference pattern, for example the black and white areas on the paper or the film, for example the area distribution of printed and unprinted areas relative to one another within the interference pattern 1. With different interference patterns intentionally differently designed Störmuster meant, but not by the repeated reprinting of the same pattern only as a result of manufacturing inaccuracies, such as printing plate dirt, dust or other random influences resulting deviations that would reproduce a pattern substantially identical, at least within the manufacturing accuracies.

Unlike FIG. 1 and the following figures, no particular size relationship between the first sheet 11 and the second sheet 12 needs to exist; both leaves may be of different sizes or of equal size, i. occupy the same area and completely overlap each other, for example. Nor are the areas on which the interference pattern 1 and the data 2 are arranged fixed. For example, the interference pattern and / or the data can optionally be arranged on the inside or outside of the respective sheet, here with the inside

Side of the sheet is meant, which faces the other sheet. It only need the data 2, the interference pattern 1 overlay optically; For this purpose, one of the sheets or even both sheets can also be formed from a transparent film. More concretely in FIG. 1, the first sheet 11 is, for example, a paper sheet p, such as a normal letter paper in DIN A4 format or another standardized format. For example, the second sheet 2 is also a sheet of paper, especially when the facing sides of both sheets 11, 12 are printed with the disturbing pattern and the data. According to the example in Figure 1, however, the second sheet 12 is preferably a plastic film k, namely a transparent or at least translucent plastic film to be read from the front, through which, however, initially the disturbing pattern 1 of the first sheet 11 is visible , which optically merges with the confidential data 2 of the front second sheet 12. This embodiment has the advantage that the entire documents 10, ie the lettered or unlabeled letterhead with the pattern and the second sheet can be prepared in advance, without having to pre-already personal or other confidential data 2 must be printed on the second sheet 12. Nor do the remaining parts of the text 9, which for example make up a common cover letter, already have to be present on the first sheet. Instead, each prefabricated document or the template for it consists of two sheets 11, 12 and at least the disturbing pattern 1 present on the first sheet 11 12, for example, a transparent and / or colorless plastic film k, so not only the first sheet 11 can be printed on the front side, but in the same operation at the same time the second sheet 12 label the front with the confidential data 2. Through the transparent second sheet is below the label with the confidential data 2 then directly the disturbance pattern 1 of the first sheet visible, ie the printed document is then ready to ship. In the mail, when the data 2 and the jam pattern 1 are still in contact with each other and the document is also closed by an envelope or the like, the jam pattern prevents reading of the data until the receiver lifts the second sheet 12 from the first sheet 11 , In this opening by the rightful or unlawful recipient visible visible traces remain, for example, by serving as a second sheet 12 plastic film k at least partially formed as VOID film or at least provided with VOID areas, for example, along the circumference of the field 8 along leave visible residues on the first sheet 11 as soon as the film k is peeled off. However, an abusive, outwardly invisible spying on the confidential data is still possible by examining or otherwise examining the document in otherwise undamaged condition, ie with the first and second sheets lying directly one on top of the other. In this case, however, only the pattern formed jointly from the superimposition of the interference pattern 1 and the confidential data 2 can be spied out. Since according to the invention, however, each document of the sentence is equipped with its own, individual and thus from the glitches of all other documents different glitches, such spying or scanning a document in the future without any benefit, as the disturbing pattern of a concrete document no conclusions on the Construction of interference patterns of other, otherwise similar documents are more possible. As a result, the Ausspähsicherheit is significantly increased in the context of the use of interference patterns.

In the specific embodiment according to FIG. 1, in which the data 2 are formed, for example, on a second sheet 12 designed as a transparent film k, these data 2 can optionally be arranged on the outside or first side 12a or the inside or second side 12b, in particular be printed. According to FIGS. 2 and 3, the confidential data 2 can be printed, for example, on the outside 12a of the plastic film k. This has the advantage that the end user, i. Sender of the document when printing the first page I Ia of the first sheet 11 at the same time can print the first page 12a of the second sheet 12, which immediately creates the ready-to-send document. In particular, it is not required that the supplier or manufacturer on all documents of the sentence on the inside, i. the second page 12b of the second sheet 12 imprinted in advance concrete confidential data; this is possible in a simpler way by the sender himself. The individual document already provided with an individual disturbance pattern does not therefore have to be prepared in a special way by the manufacturer.

On the other hand, the confidential data 2 could also be applied to the second sheet 12 on the inner side 12b, which faces the first sheet 11, when the first and second sheets 11, 12 are already directly adjacent to each other. Although this would be more expensive than the front-side printing at the same time also the second sheet 2 from the outside, but would offer the advantage that the interference pattern 1 and the confidential data 2 at the interface between the two leaves 11, 12 are directly adjacent to each other and therefore merge even more strongly. Even with microscopic fluoroscopic means, no sharpness separation would then be possible between the confidential data and the interference pattern.

In the context of this application, the first sheet of a document is not about the uppermost sheet, but that which has the disturbance pattern 1. Furthermore, in this application, the second sheet 12 is that sheet of the document 10 which is labeled with the confidential data 2 or, in any case, is intended for later labeling with such data 2. Accordingly, the second sheet 2 may also be a sheet lying on the first sheet, in particular upper or front sheet. In addition, it can optionally cover the first sheet over the entire surface or, as shown in Figure 1, part of the area, for example, only in the area of a smaller field 8 of the first sheet, where the interference pattern 1 is housed on the first sheet.

Notwithstanding Figure 1 may be provided on the plastic film instead of the confidential data as well as the interference pattern, and accordingly may be provided on the letterhead or paper sheet instead of the interference pattern then the confidential data. In such a case, the sheet of paper then forms the second sheet because it carries the confidential data, whereas the transparent sheet forms the first and now also the front sheet, since it is provided with the disturbing pattern. In such an embodiment, only the front sheet must be lifted with the interference pattern to read on the then freed surface or partial area of the second, here paper sheet the confidential data. Here, in the delivery state of the document at the manufacturer to the user and later sender intended for confidential data subarea of the second, lower sheet is not directly accessible, but covered by the provided with the interference pattern and overlying first sheet, namely the plastic film. Nevertheless, it would also be conceivable that the user and sender printed or attached the confidential data below the plastic film on the side facing the second sheet. The interference pattern can thus be optionally formed on the outside or inside of the overlying plastic film; depending on the manufacturer's choice. 1, the personal and / or confidential data 2, which may in particular be alphanumeric data, are given by way of example with "PIN 1234." These are printed on one side of the second sheet 12, which is, for example, a plastic film k 12 is mounted on the first sheet 11, and is preferably mounted by the manufacturer, but at the latest by the user and sender on the first sheet In this respect, it is sufficient if the first and the second sheet are initially assigned to each other, ie in accordance with the number of pieces Stored documents of the entire document set in equal numbers and / or individually assigned, for example, by positioning within stacks of first and second sheets for the documents to be sent or delivered 10th

According to Figure 1, the first sheet 11, which is provided with the interference pattern 1, for example, formed as a letterhead, in particular as a paper sheet p or in any case comprises such a paper sheet. The sheet of paper may already contain additional text components 9 in addition to the disturbance pattern 1, as they are typically preprinted for mass printing. However, such text components 9 as well as the confidential data 2 can also be subsequently printed. In any case, the first sheet 11 has an interference pattern 1, which in the simplest case is printed on the paper sheet p itself. According to Figure 1, the interference pattern 1 can be placed in a designated field 8, i. be provided for a space reserved for the disturbance pattern surface area.

In FIG. 1, the area of the first leaf 11 or the area of the first side 11a is substantially larger than the interference pattern 1 and the field 8 therefor, which is covered by the second leaf 12. For example, the second sheet 12 is adhered to the first sheet 11 along one or more edges, preferably all edges of the panel 8. However, this connection is at least partially solvable, so that within the field 8, the second sheet 12 is deducted from the first to read the confidential data 2, without that the interference pattern 1 is immediately behind it.

Figure 2 shows a cross-sectional view of Figure 1, in which it can be seen how the second sheet 12 is arranged on the first sheet 11. On a first side I Ia of the first sheet 11 the disturbance pattern 1 is provided, preferably as printing, in a surface area which is covered by the second sheet 12 - here preferably a plastic film k. The interference pattern 1 preferably consists of black and white pattern elements which are distributed differently in the interference pattern of each of the documents 10 of the document set and therefore each result in individual interference patterns 1 specific to each first sheet 11. The plastic film k serving as the second sheet 12 is preferably transparent and colorless, so that the viewer gazes from above through the film k onto the interference pattern 1. The second sheet 12 is printable on its first side 12a or second side 12b with data 2 or at least inscribable by suitable techniques. In the simplest case, the film k is printed from the outside with the personal and / or confidential data 2 to be transmitted as soon as the first sheet 11 is printed with the text components 9, for example with text components 9 for mass printing, for other cover letters or for company-specific or authority-specific forms , As Figure 2 shows, the second sheet 12 rests on the first over the entire surface; in any case, within the provided for the second sheet 12 field 8. At least one edge or edge region, the second sheet 12 is fixedly connected to the first sheet 11, for example glued, as in Figure 2 in the left edge region of the interface between two sheets 11, 12 by an oblique hatching is indicated. The remaining, predominant part of the second sheet 12 is, if necessary, after removal of this or other edges, detachable from the first sheet, so that the personal data 2 and the background pattern 1 are separated from each other. As a first opening detection for the at least regional separation of the two sheets 11, 12, a VOID area can additionally be provided along the circumference or one or more edges of the second sheet 12 or its underside 12b.

3 shows a further embodiment in cross-sectional view with a larger magnification than in FIG. 2. According to FIG. 3, the second sheet 2 with or for the confidential data 2 is again a plastic film k, but the first sheet 11 now comprises a plurality of layers, namely an information carrier 13 and a fault pattern carrier 14. In contrast to the second sheet 12, which is at least after taking off in a central region easily removable from the first sheet 11, the two sub-layers 13, 14 of the first sheet 11 are fixed and as far as possible inseparably connected , over its entire common interface over the entire surface, as in Figure 3 also is indicated by a rough hatching. The information carrier 13 may have a substantially larger area than the interference pattern carrier 14, and the interference pattern carrier 14 is provided, for example, only in the area of a field 8 - similar to FIG. 1 - but here arranged on one side of the information carrier 13. Alternatively, however, the information carrier and the interference pattern carrier can occupy areas of equal size.

As the information carrier 13, in the simplest case, a sheet of paper, i. a paper sheet p as shown in FIG. 1 or 2. Optionally, a plastic film k 'or another paper sheet p' is used as the irregularity carrier 14, the plastic film k 'optionally being transparent or non-transparent. Preferably, it is also colorless. The interference pattern 1 can be arranged, for example, on an upper side facing the second sheet 12, specifically printed there. However, it may also be arranged on the upper side of the information carrier 13 or on the underside of the interference suppression carrier 14. The second sheet 12 is in turn preferably a plastic film k, which is labeled or writable on the upper side or lower side with data 2, and in particular is printable. At least in that area where the data 2 is to be provided or to be provided, the second sheet 12 is spaced from the first sheet 11, i. here from the laminate or the double layer of the carrier layers 13, 14 separable or at least liftable. The second sheet 12 and the disturbance pattern carrier 14 only need to extend over a certain area of the first sheet 11 or its information carrier 13, for example via the field 8, in which the individual disturbing pattern of this document 10 is arranged.

The embodiment according to FIG. 3, in which the first sheet 11 consists of several, although firmly interconnected, partial layers is recommended, for example, for interference patterns which are to be introduced by means of special printing techniques in a plastic material instead of paper. Notwithstanding Figure 3, the second sheet 12 may be made instead of the first as such a layer composite. For example, it is conceivable that the carrier layers 13, 14 in FIG. 3 serve as a second sheet instead of as a first sheet, ie are labeled with the confidential data, for example in the region of the layer 14 formed of plastic. However, this does not serve then as a disturbance pattern carrier, but as provided for the confidential data sub-layer of the lower sheet, which now forms the second sheet. The plastic film k shown above in FIG. 3 then has the Function of the interference suppression carrier, ie it forms the first sheet and is to be provided with the interference pattern instead of the confidential data. By the way, apart from this role reversal, the structure of the document 10 from FIG. 3 could be retained. The same applies to Figure 1 and 2 and for all the following figures. In contrast to FIG. 3, only the individual interference pattern 1 of the document 10 would be formed outside or inside on the uppermost plastic film k, whereas the confidential data 2 would have to be inscribed into the layer 14 of the substrate by suitable labeling techniques. Regardless of whether in Figures 1 to 3 or the other figures and other embodiments of the application, the upper or the lower sheet is used as the first sheet for the interference pattern, the document preferably comprises a carrier, at least partially pasted over with a removable transparent label is. The carrier is for example a sheet of paper or includes such. In addition, at least in one field, an intermediate foil, such as layer 14 in FIG. 3, may be provided which optionally carries the interference pattern or the confidential data; for example in the form of a print. This layer is then permanently and in any case, according to its definition, inseparably bound to the paper sheet; Both together form the carrier, ie the lower sheet. Only above the intermediate foil is then the actual foil which can be pulled off to expose and disturb the reading of the data 2. It forms a transparent label, the term "label" being used to designate the sheet which can be removed as intended.

Furthermore, both sheets or carriers can be transparent. You can then also provide the outside or bottom of the lower carrier with either the interference pattern or the confidential data. In any case, regardless of their internal structure of possibly more layers, there are two sheets which can be separated from each other in accordance with the regulations, ie supports, on one of which the data to be concealed and on the other of which the interference pattern is printed. By not using any pseudo-random noise pattern for a plurality of documents, but creating and applying a different and thus individual interference pattern to each document 10 of the set, the use of glitches becomes significantly tamper-resistant.

The features explained so far or alternatives to the figures 1 to 3 can also be transferred to the following embodiments from Figure 4.

Figure 4 shows schematically a set 100 of documents 10 and 10, 10 ', 10 ", 10", respectively, which are preferably mass printed matter or templates for such; in the simplest case provided with a blank pattern, but otherwise blank, blank or otherwise unprinted paper sheets. As indicated in FIG. 4, each of these documents contains its own, individual interference pattern 1, 1, ",",... Each of these interference patterns is different from the interference pattern of all other documents 10,... Of the sentence 100. Thus, not only the confidential data 2 on each of these documents are different, but also the above or below there are disturbance patterns 1, 1 ', 1 ", 1'", .... Previous manipulation methods to draw conclusions by comparing several such documents try on the confidential data of such documents, now go nowhere, since the interference pattern 1, 1, ",", ... of the document set 100 with each other at least in detail no longer similar.

Although it would be conceivable to provide identical groups within the document set 100 in groups, in each case a few of these documents of the sentence would each have the same disturbance pattern. However, since conclusions from a comparison between see the glitches of several documents should be suppressed, preferably the interference pattern of each of the documents of the sentence of the glitches of all other documents of the sentence is different.

FIG. 5 schematically shows an example of personal and / or confidential data 2 which, although recognizable as alphanumeric characters, is composed of graphic elements as in the simplest case lines or lines which can also be used as a pattern element for the above or below interfering pattern are. In Figure 5, digital finger elements, as known from displays of calculators, This represents, for example, a personal identification number, password or password, a registration authorization number, account number or other type of personal and confidential data 2 transmitted on the second sheet 12 of one of the documents 10 of the document set 100. The remaining documents carry at the same place other, different data 2. Right and left of the data 2 is shown in Figure 5 nor a delimiter symbol, this is not part of the data and is usually not present, it should only show in Figure 5, that any other numbers, letters or other symbols could be represented by means of suitable arrangements of such digital finger structures with the aid of the same simple structures. Thus, interference patterns can also be constructed from such digital finger structures.

Alternatively, the confidential data 2 may also be alphanumeric characters, in particular numbers, provided in the usual notation, for example in a suitable publication. Then preferably also the interference pattern is constructed from such characters or numbers. In general, the interference pattern 1, which is provided above or below the printed confidential data 2, formed in a manner that the confidential data 2 with the interference pattern 1 of the visual impression merge as well as possible. In particular, for example, both the confidential data 2 and the interference pattern consist of alphanumeric characters, for example numbers, or both consist of finger-shaped, line-shaped or otherwise suitably designed lines, shapes, polygons, figures or other graphic two-dimensional structures. As a result, the interference pattern merges even better with the confidential data, or the latter go even better in the abundance of similar pattern elements of the interference pattern. The spy protection achieved by means of the different interference patterns according to the invention is thereby further increased.

FIG. 6 shows by way of example three interference patterns 1, 1 ", with which a respective document 10, 10 ', 10" of the document set 100 is provided. In this case, the document 10 is provided with the interference pattern 1, the document 10 'with the interference pattern and the document 10 "with the interference pattern 1", etc. In this type of interference pattern, preferably also the confidential data 2 is a sequence of several alphanumeric characters. here in particular Numbers, in the same font size, font, line width, font pitch, color and brightness as those of the blank pattern.

Even if a different designed Störmuster should be used for each document of the sentence, the production of the document set is more complex than conventional, because not just one and the same pattern is copied as often as desired, but designed and manufactured for each document another interference pattern, i. among other things must be printed. Thus, it is no longer possible to use one and the same template for producing the jam patterns of all the documents in the set. As a result, previous methods of duplication, which are aimed at a large number of copies of the same print medium, such as books, magazines or mass printed matter, are unsuitable in particular for manual production.

A further disadvantage is that a high preparation effort is required so that each individual disturbing pattern is printed only once. This also applies to the attenuation of digital printing, in which then for each individual interference pattern, i. For each document of the sentence, a new, pseudorandom interference pattern must be calculated again and finally printed. When using conventional printing techniques in which appropriate printing plates, Sleeves, print media or other printing units prepared and each have to be redesigned to allow an impression of the respective interference pattern, this additional effort, however, is much higher. In the following figures, therefore, embodiments are proposed with which as little as possible additional effort as large a number of different interference patterns can be produced and so with reasonable effort the greatest possible protection against manipulation or spying on the provided with the interference patterns and confidential data documents is achieved.

For example, as shown schematically in FIG. 7, in order to produce a plurality of interference patterns, which according to the invention should be different, first of all a total pattern 5 is produced, which has a sufficiently large area to accommodate therein accommodate a variety of glitches in the finally printed Storm pattern size, for example, provided in the field 8 label size. From the overall pattern area spanned with the overall pattern 5, a multiplicity of subareas 4 can thus be selected in order to obtain the area detail 23 of the overall pattern 5 as a respective interference pattern 1,, 1 ", Set 100 to use. These surface sections 23 are each equal to each other, but filled in different ways with the pattern elements of the overall pattern 5. They can be arbitrarily arranged within the area of the overall pattern 5, for example as a matrix-like or parquet-like arrangement of partial areas 4. In a conceivable numerical example in which each individual interference pattern or the label or field to be printed therewith has a size of 35 × 44 mm, can be accommodated on a Druckfiäche of 400 x 600 mm, a total of 128 such Störmuster; for example, in a checkerboard-like arrangement of 8 × 16 pattern sub-areas 4 or interference patterns 1. The base area of all interference patterns and their orientation is normally identical.

FIG. 7 shows a clear example in which only 16 surface sections 23 or partial surfaces 4 of an overall pattern 5 are selected for the interference patterns of the documents of the sentence. In FIG. 7, the lower left corner of the overall pattern 5 is hatched on the edge to indicate the areal extent of the overall pattern 5.

For clarity, the pattern elements are not shown in Figure 7 and the subsequent figures in the pattern area of the overall pattern 5; Instead, only the outlines and positions of the individual partial surfaces 4 and surface sections 23 are shown for the interference pattern. The overall patterns can be of any desired design, for example of alphanumeric characters and in particular numbers, as shown in FIG. 6 for three exemplary interference patterns, ie partial areas; from line-shaped elements as in FIG. 5 or from other graphic pattern elements. In contrast to a pixel or "dot" or pressure point, which represents the smallest possible realizable printing surface for a given printer or given printing technology and which is barely perceptible with the naked eye in view of today's high print resolution, In the context of this application, the term "pattern element" does not mean such a technically feasible smallest possible pressure point, but a symbol, graphic element, letter, number, special character, circle, line, rectangle, polygon or other two-dimensional character that is clearly recognizable to the human eye which is perceptible to the human eye as a graphic symbol and from which a recognizable larger pattern, in particular a random or pseudo-random pattern, can be formed, in particular pattern elements with a black-and-white distribution or with boundary lines between black and white areas or between The printed or unprinted surface areas or gaps between them may be used as a pattern element, for example the surface area filled in by the printing of a single digit or of any other character enumerated above h in the immediate vicinity.

Cross-document pattern elements are preferably used for the interference patterns, ie a group of pattern elements that occur more or less frequently in the interference pattern of each document of the document sentence. Furthermore, preferably set-specific pattern elements are used. This refers to pattern elements which are selected or generated specifically for the specific document set 100, for example finger-like digital structures, as illustrated in FIG. 5 on the basis of the confidential data 2, or pattern elements optimized especially for the optical impression of the pattern. In addition to the character size or font size, line or line width, font inclination or the corresponding parameters of other pattern elements, pattern characteristics such as the direction of the predominant line orientation, a certain amount of filigree, a certain unit size or preferred size can also be used to achieve a sentence-specific impression of the interference patterns the individual pattern elements or the degree of printing, ie the percentage or otherwise determined area ratio of the printed area per total area are taken into account. Also targeted deviations of the above parameters or properties or specific specifications for these parameters or at least some of them and also the dispersion of these properties over the total pattern area, ie in smaller areas compared to the total pattern area, can be used to achieve that to look at the different and individually designed Störmuster on closer inspection uniform at first glance seem to be. If many such disturbance patterns are designed in one of the ways described above with an approximately uniform appearance, but nevertheless different patterns of disturbance pattern, the association with the document set 100 remains recognizable even when the documents of the sentence are compared with one another and when compared with foreign documents; the respective interference patterns 1, 1, ", ... are thus specific for this document set 100. The overall pattern 5 is also specific to the document set at the same time, being interdocumented, since it produces interfering patterns for a large number of documents of the sentence, if necessary In particular, the overall pattern 5 is further processed into glitches of the document set 100.

In digital printing, corresponding patches of the overall pattern can be selected and printed on the respective document of the sentence without the surrounding remainder of the overall pattern. Since ultimately only the desired section of the overall pattern has to be selected, the production of the interference patterns becomes more efficient and faster. However, even conventional printing techniques that cut or punch out the blank pattern motif to be printed along its circumference can be applied to the embodiments described herein. In particular, the overall pattern 5 can be printed on a pattern carrier 21. Whenever "printing" is referred to in this application, in addition to the conventional printing techniques in the strict sense in which ink is printed or ink or toner is applied, all other methods can be used in which the surface of the printing technology to be changed In particular, all techniques can be used with which the surface of a paper sheet, a plastic film or other material inscribable or with a monochrome, two-tone or colorful image or other motif The pattern carrier 21 illustrated in FIG. 7 can be, for example, a sheet 20, in particular a paper sheet or plastic film, or alternatively a carrier sheet 22, ie a printing substrate usually packaged and supplied as a roll product can be formed from paper, plastic or a composite of several materials, including an optional lower-side adhesive layer and a further layer or a layer composite underneath as a holding film, in particular with an upper-side release layer for peeling off the adhesive layer. However, in the simplest case, the pattern carrier 21 or the carrier web 22 or the sheet 20 is merely a plastic film or a paper sheet.

In the case of a carrier web 22 present as an endless product or a roll, there is a preferred direction, for example the print transport direction T or the longitudinal direction L, along which the carrier web 22 can be printed by a suitable printing roller or sleeve or other suitable continuous printing unit. However, even if the pattern carrier 21 for the entire pattern is a sheet 20, ie, a large sheet of film or paper, there is often a main direction or preferential direction here referred to as the first direction x There is a great deal of leeway for selecting the area cutouts 23 for the respective pattern from the overall pattern 5. In the direction of the print width y of the overall pattern, however, the margin is often limited.

Thus, using such conventional printing techniques, at least one pattern carrier 21 is printed with a total pattern 5, whereby an impression 25 of the overall pattern 5 is produced. From the paper or foil-like pattern carrier 21, surface cutouts 23 can then be selected and these can then be cut out of the pattern carrier 21 as sections 24. The separation is done for example by punching, in particular by mechanical punching or alternatively by laser punching; in the latter case, the contour lines of the sub-areas 4 are each cut out by means of the laser beam 16 of a motor-driven laser punch 19, i. burned out, as exemplified at the top right in Figure 7 is shown.

In this application, a carrier web 22 is a pattern carrier 21 in the form of a roll, that is to say the material which is actually to be printed and then used as the first sheet or to be labeled thereon. It is preferably a label material that is adhesive at the bottom. Under the pattern carrier 21 and the carrier web 22 may still be a top side non-stick retaining film arranged as a further background layer. When mechanical punching or laser punching are then preferably only the outlines of the partial surfaces 4 or interference patterns 1, 1 ', 1 ", ... are punched or burnt out at the level of the pattern carrier 21, but not the underlying holding film After removing the grid, the labels are for the interference patterns, ie the partial pieces 24 then more easily removable.

According to FIG. 7, the overall pattern 5 and, in the case of mechanical printing technology, the pattern carrier 21 can be selected to be sufficiently large that a sufficient number of interference patterns, ideally the interference patterns for all documents 10 of the sentence 100, can be produced or punched out of the overall pattern 5. This requires a correspondingly large pattern area of the overall pattern and sufficient variability of the overall pattern 5 within its pattern area, so that pattern repetitions do not occur between the sections 24 for the interference patterns 1, 1 ',... For a mass printed matter, the number of documents in the document set, and accordingly the number of different patterns of interference required, can be in the thousands, tens, or hundreds of thousands. In view of the limited area of the pattern carrier 21 for the overall pattern 5, the variability of the interference patterns to be punched out is u.U. quickly exhausted, especially with firmly positioned punch.

The variability of the disturbance patterns, ie the number of different disturbance patterns that can be produced from the overall pattern 5 without obvious pattern overlaps, can be increased by making a plurality of impressions 25a, 25b,... Instead of a single impression 25; approximately on several successive sections of a pattern carrier serving as the carrier web or on a plurality of paper sheets or plastic films. However, even if the multiple prints each show the same overall pattern, the pattern variability can be increased by printing the overall pattern 5 on the next pattern carrier with a certain offset V from the previous pattern carrier in the repeated printing. Even if the positions of all stamping contours for the sections 24 remain stationary, in the subsequent impression then surface cutouts 23 displaced by the offset V from the overall pattern 5, ie from its second impression 25 b, are punched out as sections 24. Optionally, the punch as a whole for all to be punched out of one and the same imprint sections relative to the overall pattern imprint 25 and the next pattern carrier 21 displaced, in particular translationally offset. Such an offset will be preferred at least along a first direction, for example, the print transport direction T or main extension or longitudinal direction L, set. If the carrier width allows it, in addition, a y offset in the width direction, ie along the second direction y can also be set. The portions 24 obtained from this second and subsequent impressions, respectively, have staggered pattern sub-areas of the whole pattern offset from those obtained from the first and previous pattern prints. Therefore, all the interference patterns obtained from any of the multiple impressions are different from each other, even if overlapping overlapping should occur between interference patterns 23 between different impressions 25 of the same overall pattern 5.

In FIG. 7, two such partial surfaces 4 'obtained by repeated printing and translationally offset punching are shown with dashed lines, wherein the overlap 15 with the partial surface 4 of the next positioned partial piece 24, which was obtained from the previous impression 25, is also shown. By repeated printing and joint targeted and / or pseudorandom shifting of the auszustählenden, auszustanzenden faces 4, 4 ', ... can thus significantly more different disturbance patterns 1 generate. Of course, this embodiment as well as all the rest in the description, the claims and the figures with the additional Maßme would be combinable that instead of only a single overall pattern a plurality of total patterns generated and / or printed. The pattern carrier 21 shown in Figure 7 is then provided for example with a first impression 25 a of the overall pattern 5; the partial surfaces 4 ', which result from displacement of punch, overall pattern and / or pattern carrier in the next impression, are then not contained in the same overall pattern carrier 21 but in a further pattern carrier of the same size or punched out of it. After a first imprint 25 a of a first overall pattern, other, ie different overall patterns can thus be used for the other imprints 25 b. All embodiments in the description, the claims and the figures can thus, instead of a single overall pattern, in each case contain different overall patterns 5a, 5b, 5c,... When talking about a repeated printing. As a result, an even higher variety of different, individual interference patterns is achieved. FIG. 8 shows a development in which a respective individual offset v of the area cutout 23 or section 24 'to be punched out is adjusted from a pattern carrier 21, for example in another pattern carrier 21b for printing the same or another overall pattern 5, for some or all interference patterns , Such individual translational shifts or displacements of partial pattern surfaces only for one interference pattern 1; ; 1 "; ... can not be achieved with a rigid multiple punch, but here it is possible to insert an electrically controllable laser punch for cutting out or burning out the sections 24, 24 'from the respective pattern carriers 21a, 21b The offset vertex areas of the overall pattern are shown in broken lines in Figure 8, and the offset v along x and / or y can be calculated for each subarea 4 '. In the simplest case, only dislocations along a preferred direction, namely a longitudinal direction L, a printing transporter direction T or other first directions x are realized, in which case an individual offset vx is created along the direction x for each section 24 ' 8 optionally additionally marked offset vy in the second direction y is the amount vy then zero. By including a translational offset vy also in the second direction y, the diversity and distinctness of the interference pattern formed from the sections 24, 24 ', ... of all pattern carriers 21a, 21b, ... can be further increased. The variability of the interference patterns with otherwise constant overall pattern or constant group of overall patterns can also be increased by rotating some of the pattern carriers around their mid-perpendiculars after printing but before punching. For square pattern carriers, rotations of 90 ° or 270 ° are also possible. Furthermore, with each new punching process for one, some or all parts of the respective pattern carrier, this pattern carrier can also be rotated by any other angle and / or moved by any amount in a certain direction. This results in an even greater variety of different interference patterns despite the uniform pressure plate. As a printing process, the flexographic printing, for example by means of a flexographic printing press or flexographic printing plate, is mentioned here by way of example only. In spite of the overlaps of glitches that sometimes arise, conclusions from a glitch pattern to another glitch pattern of the same set of documents 100 are relatively difficult to apply and then predominantly relate to edge areas of the glitch patterns, but not to the middle of the glitches where the confidential data is obfuscated. In FIG. 8, for example, the displacement vy, vx of the punched-out section 24 'in the second row from the top, second column from the left, shows that portion 24' opposite its original reference position 17 in the second row from the top, second column from the left to the left shifted left and down that the upper left corner of this portion 24 'comes to lie in an area corresponding to the lower right corner or at least the lower part of the right edge of the left adjacent section, if this according to his own Reference position would have been punched out. Therefore, conclusions are only partially possible between the different interference patterns; most difficult, especially in the middle of the disturbance pattern. Depending on the number of pieces 24 or samples 1 available per print 25 or per pattern carrier 21, which in reality is considerably larger than shown in FIGS. 7 and 8 for the sake of clarity, and depending on the number of total used Overall pattern can thus increase the variability of the individual interference patterns arbitrarily.

FIGS. 9 to 11 show overall patterns which are suitable for producing a particularly large number of different partial patterns or punchable interference patterns. The overall patterns on which FIGS. 9 to 11 are based are in the form of webs and are therefore particularly well suited for pattern carriers configured as rolls or for endless carrier webs. Along a first direction x, for example, the main extension direction of the overall pattern 5, i. corresponds to the longitudinal direction L of the carrier web and / or the printing transport direction T, the total length of the continuous overall pattern is ultimately limited only by the total length of the plastic or paper web used, which forms the pattern carrier 21 to be printed.

In FIGS. 9 to 11, the illustrated overall patterns or pattern carriers are shown reduced in size compared to FIGS. 7 and 8; in particular along the second direction y from FIGS. 7 and 8, they should have the same or at least a comparable dimension and thus make it possible to punch out a comparably large number of juxtaposed sections 24 in this direction. Figures 9 to 11 show overall patterns with numbers, for example, but other pattern elements may be used as otherwise mentioned in this application. Expediently, in each embodiment of the application, the pattern is formed from such pattern elements from which the numbers, numbers or other characters of the data 2 to be masked are formed, so that the latter can not already be distinguished from the pattern elements by the nature of the individual structures.

FIG. 9 shows two overall patterns 5a, 5b which are printed on two pattern carriers 21a, 21b. As far as manufacturing, i. If such carrier webs 22 have been dispensed with in advance, corresponding overall patterns can also be generated digitally and then the respective disturbance patterns 1 can be selected from them and printed on the documents 10 or their respective first page 11 in digital printing.

As shown in Figure 9, two or more different overall patterns 5a, 5b, ... may be used, with an overall pattern not having to be used for all the jar patterns of the entire set of documents but needing to be used only for so few jamming patterns that a sufficient Ausspähsicherheit is guaranteed. Also in all other embodiments of the description, the claims and the other figures, a plurality of different overall patterns can be used or printed; optionally only once or several times.

The partial areas 4 to be used for the interference patterns of the documents of the sentence to be used from the overall pattern or designs may optionally be chosen such that they are completely overlapping with one another, or alternatively overlaps between partial areas of different overall patterns or between different impressions of overall patterns are permissible. At least in the case of overlapping-free selection of partial surfaces or partial pieces, sufficient tamper-evident security is ensured almost automatically.

As a result of the overall web-shaped patterns in FIG. 9, the extent of which along the preferred direction x is substantially greater than in the direction perpendicular thereto, the selection of sub-patterns that differ with sufficient certainty is considerably easier. Therefore, it is sufficient in particular here if the positions of the individual sections or partial surfaces only along this preferred direction x, L or T is varied. However, the number and position of the sections or partial areas which can be accommodated along the second direction y need not then be additionally varied; the production is simpler in terms of printing technology. For example, with a carrier web width of 400 mm, eight superimposed rows of area cutouts or partial areas are punched out of each carrier web 22, the same eight identical punching positions being used along the second direction and the position only along the first direction x, ie along each row each of the surface cutouts 23 or partial surfaces 4 to be punched out is varied. The variation of the individual positions can take place in the manner of a regular arrangement as in FIGS. 7 and 8, but also with additional individual displacement as in FIG. 8 at least along the first direction x. Furthermore, the patches to be punched out or to be selected digitally can be selected such that they are either always free from overlapping to all other patches, that they have overlaps of a predefined maximum allowed size or that it depends on further circumstances or parameters, if and to what extent overlaps and thus partial pattern overlaps or similarities between different interference patterns are allowed.

In a further embodiment, several of the patterns shown in FIG. 9 can also be superimposed to form an even denser, combined overall pattern. In this case, the individual patterns 5 a, 5 b shown in FIG. 9 above and below are used as overlay patterns 30 a, 30 b and 30, respectively, and more than just two overlay patterns are combined to form this single overall pattern, depending on the desired degree of printing and the complexity of the intended overall pattern ie can be superimposed.

FIG. 10 shows, for example, an overall pattern 5 which is composed of two actually full-surface individual patterns as in FIG. In this case, the individual pattern 5b from FIG. 9 was used and a further 30c, which, however, is not shown in FIG. In this way, the overall pattern 5 in FIG. 10 is formed from two overlay patterns 30b, 30c. In FIG. 11, however, an overall pattern is depicted that is composed of a total of four overlay patterns 30 similar to those of FIG. 9, wherein at least the single pattern 5a is the first overlay pattern 30a was used with. As can be seen from the comparison of Figures 9, 10 and 11 with each other, can be the desired Degree of printing, ie, the proportion of black to white areas or from printed to unprinted areas controlled by the number of superimposed individual patterns, in particular to achieve the desired degree of confusion of obfuscation serving for obfuscation. In addition, the individual patterns to be superimposed can be distributed to a corresponding number of printing units, wherein in the case of a number of N printing units, each contributes approximately a proportion of 1 / N to the total printing density of the overall pattern.

In order to produce the overall pattern, which is shown schematically in FIGS. 9 to 11 and resembles an endless wallpaper, the carrier web is printed, for example, successively N times, in each case by one of the N printing units. In view of the large pattern expansion in the direction x, printing units provided with rollers or rollers are particularly expedient. However, this does not necessarily mean that no pattern repetitions should occur in the single individual patterns to be combined with each other. It is quite possible to use pressure-sensitive plates or "sleeves" that produce pattern repetitions by tensioning them around a roller which is rolled onto the wallpaper-shaped carrier web and printing on it Number of copies of the printing pattern of the sleeve or printing plate on the carrier web sequentially, ie printed one behind the other.A sleeve offers the advantage of batchless printing, so that the right and left end of the individual impression, ie the end of a 360 ° rotation is not clearly visible is.

The pattern repeats that occur can be visually obscured by printing the multiple overlay patterns using sleeves that are not synchronized with each other and / or using sleeves that have different radii or length dimensions in the x, T, or L directions.

The examples of disturbance exemplarily illustrated in this application, in particular those of FIGS. 6 and 9 to 11, can furthermore be modified in a suitable manner in order to increase the impression created of "confusion" of the respective interference pattern and / or to produce an even stronger optical pattern Fusion of the individual interference pattern with the data to be obfuscated in Figures 6 and 9 to 11 used as a pattern elements numbers or the other each to be used pattern elements for the relevant interference pattern in the following manner be modified. For example, apart from the placement or positioning of the respective pattern element, its orientation can also be changed, if necessary also in combination with the possibility of additionally mirroring the pattern elements, ie printing them in mirror image. Thus, in addition to the selection of the pattern elements and the positioning of these pattern elements, the orientation of these pattern elements within the two-dimensional noise pattern surface may also be determined using pseudorandom algorithms and / or selection steps. Furthermore, the scaling, ie the print size of the respective pattern element to be printed or other modifications of the print image of the pattern element can be set pseudorandomly. For example, the font size, the font height, the font width, the font inclination, the line thickness, the font, other changes such as bold or italic, stylistic character deformations, any other graphical deformations or several of these listed above changes on also preferably pseudo-random, ie using pseudo random algorithms and / or selection steps. In this case, not only the pattern elements themselves, but also the deformation steps to be carried out are determined pseudorandomly. For this purpose, for example, suitable parameter ranges are defined and, within these parameter ranges, pseudo-randomly selected concrete numerical parameter values for each pattern element or for each position in the disturbance pattern on which a pattern element is to be arranged, and according to these pseudo-randomly determined parameter values, that is determined for the respective pattern element position Deformed pattern element. This results in the deformed printed image of the respective pattern element or the respective pattern element position in the disturbance pattern. For example, parameter ranges may be defined for the above deformations or modifications of the pattern elements, eg parameter ranges for the angular degree of rotation of the pattern element in the clockwise direction, for the degree of inclination of the scripture, for the percentage of its magnification, extension or broadening, or for The number of fonts to select from in a list of fonts provided. The patterns formed from the pattern elements changed in print image-be they numbers, other alphanumeric characters of a Romance, modern or any other language or whatever graphic pattern elements are formed-are even more complex or inconsistent in themselves. Therefore, when comparing the documents of the document set, the different patterns of interference also differ much more and more from each other. In the case of a character pool of the same size, an even greater degree of variation in the variety of patterns that can be generated is achieved by means of the above possible variations of the individual pattern elements. FIG. 12 schematically shows an arrangement of four overlay patterns 30 a to 3 od, which are successively printed on the same pattern carrier 21 or on the same carrier web 22. Accordingly, different digitally generated overlay patterns can be digitally overlaid to a single overall pattern. In each case, the final overall pattern 5 is created, the superposed partial patterns of which are shown in FIG. 12 for the sake of clarity instead of one another.

Also computational savings and savings of material and labor costs are achieved, although only a small number N of here, for example, only four sleeves or other suitable printing units 18 is used. Rotational printing or random printing of new copies of the same individual pattern in succession produces a corresponding printing web whose pattern has a certain period M. FIG. 12 shows four such individual patterns 30a to 30d, which are printed without success and repeated next to each other and which are suitable for printing on a wallpaper-type surface of basically any desired length. So that the overall pattern 5 resulting from the superimposition of the overlay pattern has no periodicity or at least the largest possible period, the periods M1 to M4 of the individual overlay patterns 30a to 30d are selected differently, preferably so that the ratio of each two period lengths M to one another is an irrational number is, a fraction with the largest possible numerator and denominator yields or at least chosen so that the resulting by combining or adding the overlay pattern involved overall pattern repeats only after the largest possible portion along the printed carrier web. The contributions of the individual printing units 18 or overlaymusic ter 30a to 30d therefore shift in the longitudinal direction L so that at least in the resulting overall pattern 5 no recognizable repetitions occur more. As a result, for example, thousands or even hundreds of thousands of different, each individual disturbance patterns can be produced, without causing pattern repetition between them. Especially in the batchless continuous printing of the individual overlay patterns, pattern repetitions are no longer recognizable on the basis of the finished overall pattern. The subsequent punching out of the partial surfaces 4 or surface cutouts 23, if necessary in the form of real sections 4 of one or more paper sheets or plastic films used as carrier webs 22 and in particular of roller conveyors, thus results in a sufficiently large number of individual, respectively different, disturbing patterns 1 or provided therewith Notify carrier 14, which can be used as the first sheet 11 of the respective document or at least be glued to the first sheet of the respective document. Even if digital printing is used, ie the merely digital generation of the overall pattern (s), if necessary, as shown in FIG. 12 by superposition of several overlay patterns, only a fraction of the computation effort is required to obtain an arbitrarily large area supply for one or more overall patterns. from which then as Störmuster 1 to be used partial surfaces 4 and surface cutouts 23 are selectable or punched out. In addition, a respective offset v can be set at least along the first direction x between the respective overlay patterns, similar to FIGS. 7 and 8.

FIG. 13 shows a surface section of an individual interference pattern 1, which is constructed from pattern elements 3 or is constructed in the finished state from such pattern elements. The interference pattern 1 is composed for example of kacheiförmigen, eg rectangular or square pattern elements, in addition, the outline of the tiles are shown in Figure 13, which are not visible in the actual interference pattern. Each pattern element 3 is filled with a certain surface area, for example with an arrangement of one or more lines, finger-shaped elements, polygons or with other graphic structures. In particular, each pattern element has an individual color distribution of black and white areas. In FIG. 13, for example, the pattern element 3a is provided with two and the pattern element 3b with three finger-shaped elements, as typically also used to represent an alphanumeric string, such as shown in FIG. 5 for the data 2 to be masked. One of a group of similar pattern elements 3; 3a, 3b, ... formed Störmuster 1 therefore makes it difficult to read such data. 2

In FIG. 13, the cached pattern elements 3 are arranged in a two-dimensional matrix along two directions, wherein the entire surface of the perturbation pattern 1 does not need to be completely covered with the pattern elements; free spaces may also remain, as shown at the positions with the coordinates (X / Y) = (00/00), (04/00), (00/02) and (03/02). The selection of the positions where pattern elements are present and the selection of the respective pattern elements to be placed is done using a pseudo-random number generator. In the partial view of FIG. 13, only the lower left corner of the interference pattern in the vicinity of the coordinate or position (00/00) is shown.

The disturbance pattern 1 built up from the pattern elements has a degree of blackening which i.a. depends on the total number of placed pattern elements, depending on line width or on the nature of the individual pattern elements (for example, with black sub-areas instead of only line structures) already a much higher degree of printing is achieved. Depending on the nature of the pattern elements, suitable boundary conditions ensure that the boundaries between adjacent pattern elements are not recognizable in the finished blank pattern, for example by placing only those pattern elements directly next to each other along their common boundary line having the same distribution of black and white or printed and unprinted areas have.

According to this application, a disturbance pattern 1; ; 1 ";Γ"; ... in which the pattern elements 3 are each arranged differently than in all other noise patterns of the document set 100. In the same way preferably one or more overall patterns 5; 5a, 5b, ... composed of such or other suitable pattern elements 3. Within the total area of the overall patterns 5 thus formed; 5a, 5b,..., The subareas 23 are then selected in the final size of the interference patterns 1, 1 ', 1 ", 1"',.... The pattern elements shown in FIG. 13 contain line strokes of different positioning and orientation or angle inclination within the rectangular pattern element area. In addition, in the case of the interference pattern of FIG. 13, those deformations can also be made which have already been explained above with reference to FIGS. 6 and 9 to 11. The deformations are preferably determined individually for each individual pattern element and / or for each individual pattern element surface, in particular using additional pseudorandom algorithms and / or additional pseudorandom selection steps. For this purpose, again suitable parameter ranges are defined and within these ranges the respective numerical parameter values are defined pseudo-randomly. The deformations of individual pattern elements explained here by way of example with reference to FIGS. 6, 9 to 11 and 13 can also be applied to all other embodiments of the figures, the claims and the remaining parts of the description. Figure 14 shows schematically an exemplary method for generating glitches of the document set. A corresponding method can likewise be used to generate overall patterns; In this respect, the following statements apply equally to the at least one overall pattern. The interference patterns are generated pseudorandomly, ie formed using at least one pseudorandom number before they are printed by digital printing directly on the first sheet of the document or printed by digital printing or mechanical printing on the interference pattern labels, ie on the interference pattern carrier 14 or other pattern carrier become.

The method begins with a random number for each individual interference pattern, which indicates, for example, which position X / Y (see FIG. 13) the first pattern element is to be assigned within the pattern surface of this interference pattern. Furthermore, the pattern element to be placed there - as well as all the following still to be distributed pattern elements - from a group of predefined pattern elements 3; 3a, 3b,... Selected, for example, from a finite, clear character set of cache-shaped patches, of alphanumeric characters or of other symbols or graphic elements. After selecting and positioning the pattern element selected as the starting point for the current interference pattern, further pattern elements are subsequently selected individually or in groups one after the other and positioned within the interference pattern area, the selection and / or the positioning also preferably being carried out using a new pseudorandom number. Thus, additional pattern elements are newly selected and assigned to positions within the interference pattern area until a predetermined number of pattern elements are distributed on the interference pattern area and / or until a predefined area coverage or a predetermined degree of blackening or printing over the entire interference pattern area is achieved , It can also be provided that the entire pattern surface of the interference pattern is filled completely with the pattern elements.

The generated pseudo-random noise pattern is stored and then the next interfering pattern is generated according to the same algorithm, with each new disturbance pattern using different, ie newly generated, pseudorandom numbers. The process ends when all pseudo-random noise patterns are finally generated and stored. They can then either be printed on the documents in quick succession or saved in a file for later printing. In Figure 14, the method for generating the individual perturbing patterns of the document set begins with the generation of a first perturbation pattern; beginning with the selection of the first pattern element (method step S1) and its assignment or positioning within the area for the first interference pattern (method step S2). Thereafter, a further pattern element is successively selected in each case (method step S3) and assigned to a position in the pattern surface (method step S4); Steps S3 and S4 are repeated until the query (step S5) of whether the currently generated disturbance pattern is completed is confirmed. As long as the further query (step S8), whether the entire set of glitches is finished, is denied, the currently generated, finished individual interference pattern is stored (step S6) and a file for the next disturbance pattern created (step S7). The method steps S1 to S4 are now repeated until the next disturbance pattern is completed. After generation of all interference patterns, the entire set of interference patterns is stored (step S9) and / or printed (step S10). As a criterion of whether or when a respective noise pattern is ready, the achieved surface coverage, a given printing or blackening degree or another parameter can be selected and checked during the procedure. The method may also include a check of edge effects between pattern elements that come to lie next to each other (horizontally and / or vertically) within positions within the same interference pattern. For example, it can be checked whether two pattern elements to be placed next to each other along their common edge have the same distribution of black and white areas or edges; if necessary, the additional pattern element actually to be placed there can be modified or assigned to a replacement position. The method can also be modified such that already placed pattern elements are overwritten by pattern elements to be repositioned, ie replaced. In this way, the blackening can be reversed in already-blackened interference pattern areas, for example by means of a logical XOR connection. The quality of the pseudo-random noise patterns thus generated can also be checked on the basis of quality criteria, as defined, for example, by the Federal Office for Information Security.

LIST OF REFERENCE NUMBERS

1; 1 ', 1 ", 1"' interference pattern

 2 dates

 3; 3a, 3b pattern element

4, 4 'partial area

 5; 5a, 5b overall pattern

8 field

 9 text component

10 document

 11 first leaf

 I Ia first page

 I Ib second page

 12 second leaf

12a first page

 12b second page

 13 information carriers

14 irregularity carriers

15 overlap

 16 laser beam

 17 reference position

18 printing unit

 19 laser punch

 20 sheets

 21; 21a, 21b pattern carrier

22 carrier web

 23 area cutout

24; 24 'section

 25; 25a, 25b imprint

 30; 30a, 30b, ... overlay pattern

100 set

 K; k; k 'plastic film

L longitudinal direction M1, M2, M3, M4 period

P; p; p 'paper sheet

 Sl, S2, S3, ... method step

T print transport direction

V; v offset

x first direction

X / Y position

y second direction

Claims

claims 1st set (100) of documents (10, 10 ', 10 ", 10"') for the purpose of readout of data (2), - each document (10, 10 ', 10 ", 10"') of the set (100) having a first sheet (11) with a disturbing pattern (1;; 1 ";") and a second sheet (12) forming the Labeling with data (2) is intended to have,  - wherein the interference pattern (1;, "1"; ") of the first sheet (11) is such that it makes it difficult to read or spy out data (2) arranged on the second sheet (12) if the second sheet ( 12) and the first sheet (11) lie on one another, and - wherein the interference pattern (1; 1 '; 1 "; 1"') of each of the documents (10, 10 ', 10 ", 10"') of the set (100) is an individual disturbance pattern which differs from the disturbance patterns (1 , 1 ', 1 ", 1"') of all other documents (10, 10 ', 10 ", 10"') of the sentence (100). 2. set of documents according to claim 1, characterized in that each interference pattern (1;, 1 ";") is composed of a group of pattern elements (3; 3a, 3b, ...) and that the interference patterns (1,, 1 ",") of all documents (10 ) of the set (100) are composed of the same group of pattern elements (3; 3a, 3b, ...), the relative arrangement of the pattern elements (3; 3a, 3b, ...) in each individual interference pattern (1; ; 1 ";") is different. 3. set of documents according to claim 1 or 2, characterized in that the interference patterns (1,, 1 ",") of all documents (10) of the sentence (100) are subareas (4) of a sentence-specific, but document-overlapping overall pattern (5), in particular a pseudo-random overall pattern (5), wherein each interference pattern (1; 1 ";") of one of the documents (10) in each case contains a partial surface (4) of the overall pattern (5). 4. set of documents according to one of claims 1 to 3, characterized in that the interference pattern (1,, 1 ",") of all documents (10) of the set (100) each cutouts, in particular cut out, punched or otherwise cut out sections (10) of a pattern carrier (21), wherein in each document (10) of the set (100) a respective portion (24) forms the first sheet (11) or is attached to the first sheet (11). A set of documents according to any one of claims 1 to 4, characterized in that the first sheet (11) of each document (10) of the set (100) on a first side (I Ia) has a field (8) in which the individual interference pattern (1) of this document (10) is arranged, and that the second sheet (12) mounted on this field (8) of the first sheet (11), in particular on and / or adjacent to this field (8) peelably glued , 6. Set of documents according to one of claims 1 to 5, characterized in that the second sheet (12) is a transparent or translucent plastic film (k), which covers the interference pattern (1) of the first sheet (11). 7. Set of documents according to one of claims 1 to 6, characterized in that the documents (10) of the set (100) are mass printed matter or templates for mass printed matter on the first sheet (11) one or more pre-printed, respectively identical text components (9). A set of documents according to any one of claims 1 to 7, characterized in that the first sheet (11) of each document (10) of the set (100) comprises an information carrier (13) and a message carrier (14).  wherein the interference pattern (1) is formed on or in the interference pattern carrier (14),  - Wherein the interference pattern carrier (14) has a surface area corresponding to a field (8) of the information carrier (13) provided for the interference pattern (1), and  - Wherein within the field (8) of the information carrier (13) of the interference pattern carrier (14) over its entire back firmly and permanently connected to the information carrier (13). 9. set of documents according to claim 8, characterized in that the information carrier (13) of the respective document (10) of the set (100) is a paper sheet (p) and that the message carrier (14) of the respective document (10) is another paper sheet (ρ ') or a plastic film ( k ') is. A set of documents according to any one of claims 1 to 9, characterized in that the interfering patterns (1; 1 "; Γ") of the documents (10) of the sentence (100) are pseudo-random noise patterns generated by a digital printing process are printed directly on the first sheet (11) of the respective document (10) and each having a pseudo-random pattern structure based on at least one respective pseudo-random number. 11. A method for producing a set (100) of documents (10, 10 ', 10 ", 10"') for the purpose of readout-free transmission of data (2), - For each document (10, 10 ', 10 ", 10"') of the set (100) in each case a first sheet (ll) with a disturbing pattern (1;; 1 ";") provided and a second sheet (12) labeled with data (2) associated with the first sheet (11), placed on the first sheet (11) and / or attached to the first sheet (11),  - wherein the interference patterns (1, 1, ",") are such that they make it difficult to read or spy on data (2) arranged on the second sheet (12) when the first sheet (11) and the second sheet (12) lie on each other,  - All documents (10, 10 ', 10 ", 10"') of the set (100) with different, each individual noise patterns (1;; 1 ";") are provided so that the interference pattern (1; 1 '; 1 ", 1" ') of each document (10, 10', 10 ", 10" ') from the glitches (1, 1', 1 ", 1" ') of all other documents (10, 10', 10 ", 10 "') of the sentence (100). 12. The method according to claim 11, characterized in that for the individual interference patterns (1,, 1 ",") of the documents (10) of the sentence (100) surface sections (23) of at least one set-specific, but cross-document overall pattern (5; 5 a, 5b) used in each case the first sheet (11) of each document (10) is provided with a surface section (23) of the overall pattern (5; 5 a, 5b). 13. The method of claim 1 1 or 12, characterized in that initially at least one pattern carrier (21) provided with a sentence-specific, cross-document overall pattern (5) is produced, - That a plurality of sections (24) from the pattern carrier (21) is cut out, punched or otherwise separated out and  - That each of the sections (24) as the first sheet (11) of a respective document (10) of the set (100) is used or attached to the first sheet (11) of the respective document (10). 14. The method according to claim 12 or 13, characterized in that  - a plurality of impressions (25; 25a, 25b) of identical or different overall patterns (5; 5a, 5b) are printed on one or more pattern carriers (21; 21a, 21b, ...), and  - That a plurality of portions (24) from each impression (25; 25a, 25b) is separated out,  in each case different area cutouts (23), in particular surface areas (23) of the overall pattern (5; 5a, 5b) offset differently and differently from each other within the overall pattern (5), are cut as sections ( 24) are cut out. 15. The method according to any one of claims 12 to 14, characterized in that  - Imprints (25; 25a, 25b) of at least one overall pattern (5; 5a, 5b) are printed on at least one carrier web (22) and  - that from each impression (25; 25a, 25b) an arrangement (26) of surface cutouts (23) of the overall pattern (5) is cut out to obtain the sections (24), - wherein the positions of the surface cutouts (23) from the impressions (25) are separated out as sections (24), are selected differently for each impression (25). 16. The method according to claim 15, characterized in that from each impression (25; 25a, 25b) other, in the direction of a Drucktransportrichtung (T) and / or longitudinal direction (L) of the carrier web (22) each differently differently offset surface cutouts (23) are separated, whereby each impression (25) of the at least one overall pattern (5; 5a, 5b) a plurality of sections (24) is produced, whose interference pattern (1;; 1 ";") is produced by the interference patterns (1, 1 ", 1"') of the other impressions (25; 25a, 25b) produced sections (24) are different. 17. The method according to any one of claims 14 to 16, characterized in that the portions (24) are formed with the interference pattern (1) for the documents (10) of the set (100) by the surface cutouts (23) of the at least one overall pattern (5; 5a, 5b) by means of a laser punch (19) from the at least one impression (25; 25 a, 25 b) are punched out, wherein the laser punch (19) during punching from each of the impressions (25) of the at least one overall pattern (5; 5a, 5b) positioned differently each and / or is guided. 18. The method according to any one of claims 11 to 17, characterized in that each overall pattern (5; 5a, 5b) is formed by superimposing a plurality of overlay patterns (30; 30a, 30b, 30c, 30d) on each other and thereby merging them into one or more overall patterns (5; 5a, 5b) become. 19. The method according to claim 18, characterized in that the impression (25; 25a, 25b) of each overall pattern (5) is produced by printing the plurality of overlay patterns (30; 30a, 30b, 30c, 30d) one above the other on the same carrier web (22). 20. The method according to claim 18 or 19, characterized in that an overall pattern (5; 5a, 5b) is repeatedly produced from a plurality of overlay patterns (30; 30a, 30b, 30c, 30d), wherein for each overall pattern (5; 5a, 5b) a differently sized offset of the plurality of overlay patterns (5; 30, 30a, 30b, 30c, 30d) are adjusted to each other. 21. The method according to any one of claims 18 to 20, characterized in that - on the carrier web (22) a plurality of overlay patterns (30; 30a, 30b, 30c, 30d) are printed on each other, - For each overlay pattern (30; 30a, 30b, 30c, 30d) by means of a respective printing unit (18) a plurality of impressions (25) of this overlay pattern (30; 30a, 30b, 30c, 30d) is printed on the carrier web (22) without any attachments,  - Overlay patterns of different length or period (Ml, M2, M3, M4), measured in the longitudinal direction (L) of the carrier web (22) or the print transport direction (T) are printed one above the other for the overall pattern (5). 22. The method according to any one of claims 14 to 21, characterized in that the at least one overall pattern (5; 5a, 5b) printed on a plurality of sheets (20), in particular paper sheets (P) or plastic films (K) or printed with the overall pattern (5; 5 a, 5b) Carrier web (22) is divided into a plurality of sheets (20) before the portions (24) are cut out of the with the overall pattern (5) provided with sheets (20). 23. The method according to any one of claims 11 to 22, characterized in that the interfering patterns (1,, 1 ", Γ") of the documents (10) of the sentence (100) and / or at least one overall pattern (5; 5a, 5b) are generated algorithmically by using pseudorandom numbers from a Each of the selected pattern elements selected positions (X / Y) within the surface of the interference pattern (1,, 1 ", 1 '") and / or the surface of the overall pattern (5 5a, 5b), wherein at least the selection and / or the assignment of the pattern elements (3; 3a, 3b) is performed as a function of at least one of pseudo-random numbers. 24. The method according to any one of claims 11 to 23, characterized in that each interference pattern (1,, 1 ", Γ") is generated individually pseudo-randomly by selecting a pattern element (3; 3a, 3b) or a number of pattern elements (3; 3a, 3b) successively and in positions (X / Y) is distributed within the interference pattern, wherein the selection and positioning of the pattern elements is repeated until a predetermined total number of already positioned pattern elements or a predetermined amount of area coverage or pattern blackening in the respective interference pattern (1, 1, ",") is reached. 25. The method according to any one of claims 11 to 24, characterized in that the at least one overall pattern (5; 5 a, 5b) is generated pseudorandomly by selecting a pattern element (3; 3 a, 3 b) or a number of pattern elements (3; X / Y) is distributed within the overall pattern (5; 5 a, 5b), the selection and positioning of the pattern elements being repeated until a predetermined total number of already-positioned pattern elements or a predetermined amount of area coverage or pattern blackening in the overall pattern (5; 5 a, 5 b) is reached, and in that, using pseudo random numbers, a plurality of area cutouts (23) are selected from the at least one overall pattern (5; 5 a, 5 b) and used to produce the disturbance patterns (1, 1, 1 ", l '") of the set (100) of documents (10) is printed.