Pattern for enhancing dynamic optical variable anti-counterfeiting effect and preparation method of pattern

Abstract

The invention discloses a pattern for enhancing the dynamic optical variable anti-counterfeiting effect and a preparation method of the pattern. The pattern for enhancing the dynamic optical variable anti-counterfeiting effect consists of a full-version colored printing body and a colored printing body with high and narrow three-dimensional line patterns; the colored printing body with the high and narrow three-dimensional line patterns is printed on the full-version colored printing body; the shape of the colored printing body with the high and narrow three-dimensional line patterns is in a form of combined lines and comprises curved lines, straight lines, a dot matrix or a combination of the curved lines, the straight lines and the dot matrix; the clearance between every two lines is 100 to 300 percent of the widths of the lines; the heights of the lines are 10 to 300 percent of the widths of the lines. The pattern has the colors containing the color of the colored printing body with the high and narrow three-dimensional line patterns and the color of the full-version colored printing body, which are uniform color space complemented colors or are obvious in visual difference. The pattern disclosed by the invention tilts or rotates along with printing products and generates a bright color change along with visual continuous dynamic optical variable effect, namely inclination; a strong color drifting effect is generated by horizontal rotation; the pattern has the advantages of visibility, easiness in identification, copying resistance, difficulty in counterfeiting and suitability for industrial application.

Description

technical field [0001] The invention relates to an anti-counterfeiting pattern and a manufacturing method thereof, in particular to an enhanced dynamic light-changing anti-counterfeiting pattern and a manufacturing method thereof, belonging to the field of anti-counterfeiting printing. Background technique [0002] The engraving gravure optically variable pattern technology is an anti-counterfeiting technology that is widely used in the banknote printing industry and is easily recognized by the public. The tradition is to use the invisible part of the pattern and the visible part of the pattern with the same number of lines, and the texture is arranged in a 45-90 degree contrast. In recent years, more precise pattern overprinting is used in engraving gravure and offset printing, and engraving gravure is inkless air stamping. When rotating and observing, the angle of the lines and shadows of the pattern is changed to produce grayscale or light-changing effects, but there is ...

AI Technical Summary

Problems solved by technology

[0003] Chinese invention patent application 200610020757.2 provides a recessive anti-counterfeiting pattern of engraved gravure printing that can produce optical changes, but the pattern is composed of parallel lines and has no curved structure, so it cannot produce the effect of dynamic color drift

[0004] Chinese patent CN201310534864 provides a recessive anti-counterfeiting pattern of engraved gravure printing that can produce color changes, but the pattern needs to be accurately overprinted with other patterns (such as offset printing), which requires high overprinting equipment and poor consistency in producing optical changes , is not conducive to wide application, especially in the application of banknotes is limited, and the public recognition is not enough

[0005] Chinese patent CN1262430 provides a data carrier with an optically variable structure, which is a combination of an intaglio relief structure and an overprinted printed body so that part of the printed body is visible when it is vertical, but invisible when viewed obliquely. When viewed alternately vertically and obliquely, it produces a tilt effect, but does not produce a dynamic optical color change effect when rotated

[0006] In the known design of optically variable anti-counterfeiting printing, the line printing of offset printing is basically set on the side of the empty embossing, so the contrast or oblique effect is obvious, but the viewing angle of the optical color change is very narrow, and an accurate viewing angle must be found , not suitable for fast observation, and the light change effect is discontinuous, no dynamic change

Images