PROTECTED INFORMATION CARRIER WITH OPTICALLY VARIABLE EFFECT AND METHOD FOR ITS MANUFACTURE Russian patent published in 2023 - IPC B41M3/14 G03H1/22 

FIELD: security printing.

SUBSTANCE: inventions group relates to the field of security printing and can be used in the manufacture of banknotes, securities, passports and other security printing products. A secure information carrier with an optically variable effect includes a paper, polymer or combined base containing a zone with a regular and/or irregular dot pattern applied. Moreover, the points that make up the raster structure are made in the form of geometric shapes containing straight, broken, curvilinear lines, several colours, and in the area of the raster structure, a three-dimensional raster is applied, made by the method for intaglio colourless embossing, and/or relief embossing, and/or blind embossing, and/or relief printing, and when observing the zone at an angle of 90° from the plane of the information carrier, a uniformly coloured field is visible with a colour resulting from the synthesis of dot structure inks. At the same time, when observing the zone at an acute angle on a uniform field of the protective carrier, the first image is seen, uniformly coloured by colour or stripes alternating in different colours, in addition, when observing the zone of the information carrier at an acute angle and rotated by 90°, the first image changes to the second image uniformly coloured with a colour different from the colour of the first image, or stripes alternating in different colours, different from the colour of the stripes of the first image and changing the orientation of the alternating stripes on the plane of the information carrier.

EFFECT: creation of a new security printing technology, expansion of the arsenal of technical means for creating visual security features based on various visual effects.

6 cl, 17 dwg