DE2825753A1 - PRINT BACKGROUND, IN PARTICULAR FOR SECURITIES - Google Patents

Description

Lorenz & Riederer 9 q 9 ς 7 ς ο

Patent attorneys

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Lorenz te Riederer, Postfach 1320, D-8035 Gmting 2 Dipl.-Phys. Willy Lorenz

Dipl.-Ing. Anton Frhr. Riederer by couple

June 12, 1978

Our files: d 69-j, DE

DRUKKERIJM DE BUSSY TRAPMAN B.V.,

Van Leeuvenhoekstraat 10, HEERHUGOWAARD, Nederland.

Printing background, especially for securities.

The invention relates to a printing substrate for in particular Securities, e.g. stocks, bonds, flight tickets or the like .. Often a colored or at least partially colored printing background is used for securities, on which a fine pattern may be applied, selected to make counterfeiting by copying, among other things, more difficult and to avoid. However, in the meantime, the development in the field of copiers is like this It is well advanced that it is possible to make copies of colored originals that are quite true to life. The fear is therefore justified, that with the ever more general spread of such color copiers, this possibility should be used to transfer securities on the

Copy path to forge.

The aim of the invention is to create a printing background which is composed in such a way that it is immediately clear whether the security paper shown is the original or a copy.

909850/0491.

For this purpose, it is proposed according to the invention to design the printing background in such a way that that it consists of a fine pattern printed on a level surface, the constituent parts of which are mostly one show the same orientation and configuration and, on the other hand, form an area with a different orientation, in which area the composing However, parts of each other again have the same configuration and orientation. The fine pattern on the template is visible to the human eye flow in such a way that it is no longer perceived as a separate pattern, but forms part of the level subsurface. The area with a different orientation is also not perceived by this effect but also form part of the visually almost level subsurface. However, if such a printing background is copied, then clearly visible contrasts arise between the area with the main orientation and an area with an orientation deviating from this. In this way it will be clear at a glance whether you are dealing with a template or a copy of the same. This is particularly large Advantage for securities that need to be checked within a short period of time, such as flight tickets.

If at least according to a further embodiment of the invention If there are two areas with both mutual and deviating orientation from the main orientation, the above-mentioned effect can still be achieved can be further reinforced, e.g. by completely asymmetrical arrangement of two or three areas with a different orientation or by areas with a different orientation, which are in the form of letters that form the word "void", for example.

A particularly suitable printing substrate, which also hardly differs visually differs from the substrates that are often used now, is obtained when the level substrate is white and the pattern with a transparent pastel color is printed.

Although it is possible in principle, the pattern is largely made up of where appropriate It is advisable to combine straight line pieces with deviating areas, composed of points or pits or reversed according to a further embodiment of the invention that the pattern has the same configuration everywhere.

909850/0491

Except through. Line pieces and points or pits can be the composing elements Pattern parts can be formed in many other forms, such as grid lines and closed curves. But it turned out that, with regard to the visual impression to be created, a particularly suitable substrate is obtained when the sample parts are assembled all consist of line pieces, a particularly noticeable difference in contrast being obtained after copying if the line pieces in an area with a different orientation an angle of 90 with the Include line segments oriented in the main direction.

In one attempt, a printing background for a flight ticket issued in the generally has an elongated rectangular shape. If a long side of the rectangle is viewed as horizontal, this can be done on one The samples applied to a level surface are described as follows. The greater part of the pattern was formed by horizontally and mutually parallel lines with a thickness of 0.090 mm and a mutual distance of 0.290 mm to 0.310 mm. At an angle from i + 5 from the horizontal the word "void" was attached, its Letters were formed from the surfaces bounded by the minimum perimeter of each letter, i.e. for the letter "v" e.g. almost a triangle, to be supplemented by vertical line pieces, which were also 0.090 mm thick and mutually parallel in one Gaps of 0.290 mm to 0.310 mm ran. There was also a deviating area in the form of a band extending below the horizontal present, which is again made up of line pieces with a thickness of 0.090 mm running parallel to each other at a distance of 0.290 mm to 0.310 mm was composed. The line pieces closed an angle of 90 with the main direction of the tape. The pattern was printed with a light green, transparent color on a white background. This printing background appeared to the human eye from an almost even, light green background to exist, while on closer inspection it could be perceived that a certain line pattern was present. Perceiving the areas with a different orientation was only possible after attention had been drawn to it.

This printing background was then copied on a color copier. The copy obtained showed extremely clear deviations from the original obtained impression of a level surface. The areas with different

909850/0491

Orientation, hence the word "void", and the tape were very clearly perceptible lighter in color than the rest of the underground, while now too the applied line pattern, i.e. the individual lines of the same, had become clearly perceptible. The explanation for this particularly surprising The effect is likely to be in a certain direction to seek moving, the original scanning light source of the copier.

The same experiment with a printing background with an identical line pattern, as described above, but now with an orange, transparent one Color printed gave the same result.

909850/0491

Claims (8)

? 8? 5753 CLAIMS L 1. Printing background, in particular for securities, such as stocks, Or the like 'bonds, tickets. Consisting printed from a egalen to a substrate, fine pattern whose composing parts once the most part show a same orientation and configuration and on the other an area with a different orientation form in velchem area, the constituent parts of each other but they have the same configuration and orientation. 2. Printing substrate according to claim 1, characterized in that at least There are two areas with an orientation that is both reciprocal and deviating from the main orientation. 3. printing substrate according to claim 2, characterized by areas with different orientation, which are in the form of letters that form e.g. the word "void". H. Printing substrate according to one of the preceding claims, characterized in that the level substrate is ■ white and the cough is printed with a transparent pastel color. 5. Printing substrate according to one of the preceding claims, characterized in that that the pattern has the same configuration everywhere. 6. printing substrate according to claim 5, characterized in that the composing pattern parts all consist of line pieces. 7. Printing substrate according to claim 6, characterized in that the line segments in an area with a different orientation enclose an angle of 90 ° with the line segments which are generally oriented in the main direction. ., 8. Printing substrate according to claim 6 or 7, characterized in that the line pieces have a maximum thickness in the order of magnitude of 0.09 mm and the distance between the line pieces is about 0.30 mm. 909 8'5 0/0491
ORIGINAL INSPECTED