Currency paper, especially bank note, with a safety design and process for producing it

摘要

The safety design printed on a currency paper is composed, on the one hand, of a basic design with parallel lines (10, 20, 30) extending in a specific direction, with a plurality of interruptions, by means of which regions in the form of letters are marked out, and of a plurality of line segments (1, 11, 21) which fill these regions. A plurality of groups (R to Z) of letters located next to one another respectively form a word. Within each group, all the line segments are parallel to one another, but from word to word the directions of the respective line segments differ from one another, so that there is a plurality of words with line segments inclined differently in relation to the direction of the basic- design lines. Mutually adjacent successive lines of the basic design and mutually adjacent successive line segments have alternately different colors, preferably three different colors being represented. In an attempt to reproduce a currency paper with a multi-color safety design of this type by means of a color copier, the line segments crossing the sensing direction at a relatively large angle, above all approximately at a right angle, are reproduced more broadly and more diffusely than the line segments and lines extending approximately in the sensing direction, so that, as a result of this line spread, the corresponding words, inconspicuous in the safety design of the genuine currency paper at a fleeting glance become clearly visible.