RU7634U1 - INFORMATION MEDIA FOR PROTECTIVE IMAGES - Google Patents

Description

at 42 D 15/00, 15/02

G 03 B 27/54

G 03 G 15/04, 21/00

INFORMATION MEDIA FOR PROTECTIVE IMAGES

The utility model relates to a means of producing protective images on paper and polymeric materials when printing letterheads of securities, products of strict reporting, as well as materials requiring protection from falsification using modern copy machines.

Numerous ink-based image-making tools are currently known that contain specularly reflective material, such as copper, aluminum, gold, nickel, etc. (1,2,3,4).

The prototype of the claimed device is a storage medium on which text or drawing is applied with ordinary paints, and then the second image is imprinted with paint containing mirror-reflecting material. The second image consists of a large number of small dots or strokes with small spaces (1).

total observation), the eye will see the image with the maximum matting coefficient, i.e. without a pronounced shine.

The disadvantage of the prototype is its limited use in the manufacture of images with a high degree of protection, due to the fact that such an image can be easily obtained using the usual technological process of printing production.

The challenge facing the authors of this decision was to develop a storage medium, the scope of which would apply to any documents, securities, and banknotes.

This problem is solved by the creation and use of a device, the circuit of which is shown in the figure, which shows a fragment of an information carrier containing an element for forming a color image. The information carrier 1 is sealed with a background paint 2, in which paint 3 is applied without gaps. White grid lines 4 are continuously applied or formed when printing on the joint field of paints 1 and 2 4. Depending on what color the observer wants to see the image - shiny or matte, made ordinary printing ink, the ink for the background and

for figure 3.

The protective image is made in two colors, one of which is metal. The image contains two patterns and a continuous grid structure superimposed on both images. The geometrical parameters of these three components are essential. The thickness of the white lines, which in a particular case can be the color of the base on which the image is formed, ranges from 0.05 to 0.15 mm. The ratio of the areas of the drawings made by ordinary printing ink and ink with a high reflectivity (metallized) is from 20 to 80% and vice versa.

The combination of colorful images on the storage medium should not have gaps. When viewing a printed image at a right angle (frontal observation), i.e. in the absence of gloss associated with the reflection of a directional light source (in this case, the metallized ink is perceived by the observer without a characteristic mirror color), it loses its sharp shape, and together with the second pattern made by ordinary printing ink, it gives the impression of a complex grid structure.

When the angle of inclination of the sample to the light source changes, the flux of reflected light from the surface of the ink with a high reflectivity increases sharply, while white grid structures become invisible to the observer, and the border and shape of a figure having a smaller area relative to the figure printed are clearly visible. another paint. The observer can see the figures printed with both metallic and ordinary ink, depending on the ratio of the areas sealed on the information carrier.

Thus, when changing the angle of view on the sealed surface, the image visible by the eye on the surface of the medium changes. This property can be used by changing the pattern visible in reflected light and its complementary background from one area of the document to another, gradually or stepwise changing the shape of the visible picture, its contours and color throughout the field of information carriers.

When you try to process such an image on copiers, due to mirror reflection from the surface of the metallized component of the paint, light-distorted color reproduction of the image passes, while the copy differs significantly from the original.

The above-described device eliminates the falsification of images using modern color copiers, and also allows you to verify the authenticity of such documents visually, i.e. becomes publicly available.

Sources of information:

1.US patent N 4066280 V 42 D 15/00 1978 (prototype)

2.URPATENT N 2-266361 G 03 G 7/00 1990

H. Urpatent N 60-13598 B 42 D 15/02

4.URPATENT N 62-199899 G 03 G B 27/54

Claims (3)

1. The information carrier for protective images, containing elements for image formation, made in the form of two colorful surfaces, one of which has a high light reflection coefficient, characterized in that the colorful surfaces are located without gaps between themselves, the ratio of their areas is 20 - 80% , and on these colorful surfaces an additional surface is superimposed in the form of a grid structure of white color.  2. The carrier according to claim 1, characterized in that one of the colorful surfaces is made in the form of a set of certain geometric shapes. 3. The carrier according to claim 1, characterized in that within the same carrier geometric shapes in different parts can smoothly change shape and color.