阅读说明：本技术 一种相性光变防伪元件 (Phase-change optical anti-counterfeiting element ) 是由 彭亮 于 2021-01-05 设计创作，主要内容包括：本发明首先提供了一种相性光变防伪元件,其至少具有磁性光变颜料层和深色背景层；磁性光变颜料层油墨的联结料为紫外光固化树脂,可在具有多个磁性定位装置和一个或多个遮光板的交互作用下,磁性光变颜料成多个相位角度排列,在光线作用下形成明暗相间的效果,变换角度后,原来明亮部分变暗,暗淡部分变明的相性变化效果。深色背景层也可以结合红外、磁性、荧光、隐藏信息等二线机读防伪特征,形成既能够满足大众易于识别又能够复合难以伪造的多级防伪元素的相性光变防伪元件。(The invention provides a kind of phase light change false proof component, it has magnetic light change pigment layer and dark background layer at least; the magnetic optically variable pigment layer ink has ultraviolet cured resin as the coupling material, and may be arranged in several phase angles under the interaction of several magnetic positioning devices and one or several shading plates to form alternate bright and dark effect. The dark background layer can also combine with infrared, magnetism, fluorescence, hidden information and other two-line machine-readable anti-counterfeiting characteristics to form a coherent light-variable anti-counterfeiting element which can meet the requirement of the public for easy identification and can be compounded with multi-level anti-counterfeiting elements difficult to forge.)

1. The phase-change optically variable anti-counterfeiting element is characterized in that a coupling material of the magnetic optically variable pigment layer ink is ultraviolet light curing resin.

2. A kind of phase light changes the anti-counterfeiting component, characterized by, the printed matter passes two or more fixed magnetic device with light screen apparatus continuously, while passing the fixed magnetic device once, form a magnetic light of the same polarity and change pigment solidification in the position that the corresponding ultraviolet light permeates the hollow light screen, pass another fixed magnetic device, form another magnetic light of the same polarity and change pigment solidification in the position that the corresponding ultraviolet light shines, many kinds of phase can be solidified with many fixed magnetic devices; the phase arrangements are arranged at different angles, and different light and shade reflection characteristics are formed in observation.

3. A phase-change optically variable security element, characterized in that, according to the above-mentioned feature 2, the phase-change optically variable effect is obtained by changing the light-bright part of the light-dark reflection part from light to light and changing the light-dark part from dark to light according to the observation angle, and simultaneously changing the color of the magnetic pigment.

Technical Field

The invention relates to an anti-counterfeiting technology, in particular to an anti-counterfeiting element with a light and shade phase variation pattern and a manufacturing method thereof.

Background

Due to the continuous popularization of modern color printer copiers and imaging systems and the continuous improvement of various printing technologies, the analysis precision and the color effect are continuously improved, so that the phenomenon that counterfeit valuable articles are difficult to distinguish true from false is continuously increased. For the purpose of preventing counterfeiting and forgery, valuable articles such as certificates, securities, and famous brand products are often provided with an optical security element in order to verify the authenticity of the valuable articles by the security element while preventing unauthorized copying.

At present, in the field of anti-counterfeiting technology, various security elements with anti-counterfeiting function have been developed. By using the optical variable technology (hereinafter referred to as optical variable technology), counterfeit and counterfeit valuable articles can be effectively identified through copying, scanning and other counterfeit modes. Since the imaging system used in the optically variable technology records the scattered light information on the surface of the copied object, the copied object with optically variable effect cannot be copied by copying, scanning or other counterfeiting methods. Moreover, the anti-counterfeiting element (also called as an optical variable element) manufactured by the optical variable technology has the characteristic of color change along with the angle, is easy to be identified by the public, and is helpful for preventing the propagation of counterfeits from the field of circulation. Optically variable elements are security elements that use a line of security technology, and from the visual characteristics of the human eye, different visual images can be presented to the viewer at different angles, for example: different colors, along with the difference of observation angles, the change of the pattern color easily arouses the attention of people, and the anti-counterfeiting feature can be used for an observer to quickly judge the authenticity of valuable articles, thereby protecting the economic benefits of mass people.

With the continuous development and marketization of the optical variable technology, the counterfeiting means is gradually improved, so that the optical variable element is more and more easily imitated, and the printing mode of simply utilizing the characteristics of the optically variable pigment is difficult to effectively prevent the counterfeiter from copying the printing process, so that the anti-counterfeiting performance is reduced, the public cannot identify the authenticity of the marked article, and economic loss is brought to the merchant producing and selling real articles.

Disclosure of Invention

The invention provides a special device, which forms a light and shade alternative optical variable anti-counterfeiting element easy to be identified by the public by deeply utilizing the printing mode of the characteristics of magnetic optical variable pigments, and can prevent the counterfeiting and copying difficulty of counterfeiters to the process to a greater extent, thereby providing anti-counterfeiting protection for various valuable articles.

The anti-counterfeiting element of the phase-change optically variable pattern provided by the embodiment of the invention at least comprises a magnetic optically variable pigment layer and a dark background layer. The dark background layer contains a machine-readable and identifiable anti-counterfeiting material, at least part of the dark background layer and at least part of the optically variable pigment layer are overlapped up and down to form an overlapping area, and the connecting material of the magnetic optically variable pigment layer ink is ultraviolet light curing resin. The magnetic optically-variable pigment layer sequentially passes through two or more than two fixed magnetic devices with the light shading plate devices, when the magnetic devices are fixed for one time, a phase magnetic optically-variable pigment is formed at the position where corresponding ultraviolet light penetrates through the hollow light shading plate and is solidified, another phase magnetic optically-variable pigment is formed at the position where corresponding ultraviolet light irradiates through another fixed magnetic device and is solidified, the two phase arrangements are at different angles, and different light and shade reflection characteristics are formed in observation. The different bright and dark light reflecting parts can change from bright to dark and from dark to bright simultaneously according to the different observation angles, and simultaneously the characteristic color of the magnetic pigment changes.

Preferably, the dark background layer is a machine-readable information layer carrying coded information which is formed by coding materials based on anti-counterfeiting characteristics and is identified in a machine-readable manner; the anti-counterfeiting characteristic material comprises any one or more of holographic materials, fluorescent materials, soft magnetic materials, hard magnetic materials, infrared absorption materials, infrared reflection materials, infrared fluorescent materials, infrared up-conversion materials, thermoluminescent materials, thermochromism materials, piezoluminesent materials, piezoluminescer materials, triboluminescent materials, tribochromic materials, electroluminescent materials, electrochromic materials, magnetic and conductive materials and metamerism materials.

Preferably, the pigment composition of the magnetic optically variable pigment layer includes magnetic layered optically variable pigments and magnetic liquid crystal pigments. The magnetic laminar optically variable pigment is an optically variable pigment with a five-layer or seven-layer structure prepared by vacuum evaporation or sputtering, the middle layer is a magnetic layer, and the material of the magnetic laminar optically variable pigment is iron, cobalt and nickel or oxides thereof, barium ferrite, nickel-chromium alloy or titanium-cobalt alloy; the magnetic liquid crystal pigment is a blend of cholesteric liquid crystal pigment and magnetic powder, or is a three-layer structure magnetic liquid crystal pigment with a magnetic layer in the middle and liquid crystal layers on two sides, and the magnetic powder is made of iron, cobalt and nickel or oxides thereof, barium ferrite, nickel-chromium alloy and titanium-cobalt alloy.

Preferably, the light shielding plate device can be separated or patch type, and can shield light from the cured resin to prevent curing, and transmit light to cure the cured resin into a plate or a sheet, which belongs to the range of the light shielding plate device.

Preferably, the fixed magnetic device comprises a magnetic field element and an ultraviolet lamp, wherein the magnetic field element can be one or a plurality of combinations of various types of ferrite, samarium-cobalt body, neodymium-iron-boron, aluminum-nickel-cobalt, iron-chromium-cobalt and other magnets and electromagnetic field elements.

Alternatively, the fixed magnetic devices can be distributed on two sides of the printing product anti-counterfeiting element, so that the magnetic pigments are distributed in an upper and lower layered mode to form the bright and dark photopic variable anti-counterfeiting element with the relief effect.

The phase-change optically variable anti-counterfeiting element can be particularly used for anti-counterfeiting of valuable articles. May include a certificate of value, merchandise identification, merchandise packaging, and the like. The value documents include banknotes, stocks, securities, certificates, checks, passports, identification cards, and the like.

The phase-change optically variable anti-counterfeiting element is characterized in that the characteristics of the magnetic optically variable pigment are deeply utilized to form the optically variable effect of the printing patterns of different light and shade reflecting parts, the light and shade parts can be observed from all angles, simultaneously the bright part can be changed from bright to dark along with the change of the observation angle, simultaneously the dark part is changed from dark to bright, simultaneously the phase-change optically variable effect is also realized along with the change of the characteristic color of the magnetic pigment, the characteristic of easy identification is realized, and the characteristic of higher imitation difficulty and stronger anti-counterfeiting performance exists by using customized special equipment.

Drawings

Fig. 1 is a schematic view showing the arrangement characteristics of magnetic optically variable pigments when a photographic optically variable element of a printed matter of the present invention passes through each electromagnetic device and the light and shade change effect observed at each angle after the corresponding magnetism fixing operation is completed.

Description of the drawings: 100-printed matter substrate 101-printed dark background ink layer 102-printed magnetic optically variable ink layer 10201-magnetic optically variable pigment particles 103-magnetic field device 104-shading plate

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the drawings and detailed description are only illustrative of preferred embodiments of the application and are not intended to limit the scope of the application in any way.

Example 1.

And preparing materials such as magnetic optically variable printing ink, a hollow light screen and the like. Firstly, printing a dark background layer on a substrate layer by prepared ink with two-line anti-counterfeiting characteristics, such as infrared, magnetism, fluorescence, hidden information and the like; and then printing magnetic light-variable ultraviolet light-curable ink on the dark background layer, sequentially passing the printed product through a magnetism fixing device in a screen printing or gravure manner, curing the magnetic material at one phase angle by the magnetic light-variable ink at the hollowed-out part along with the irradiation of ultraviolet rays when the printed product passes through the magnetism fixing device with a light shielding plate for the first time, allowing other light-variable magnetic light-curable ink not to be cured to enter the next magnetism fixing device unit, arranging the magnetic light-variable pigment at the uncured part into another phase arrangement under the action of an electromagnetic field, and forming the arrangement and curing at another phase angle under the irradiation of ultraviolet light. After all the magnetic optically variable ink is cured, the light and shade reflection of different phase parts can be seen from one side, and the light and shade alternate change of the different phase parts can be seen along with the change of the observation angle and the change of the color of the reflection light.

The magnetic optically-variable ink can be a finished product which can be purchased directly in the market, and can also be prepared by purchasing magnetic optically-variable pigment and UV ink.

The invention relates to a phase-change optically variable anti-counterfeiting element which is characterized in that the optically variable effect of printing patterns of light and shade different reflecting parts is formed by deeply utilizing the characteristics of magnetic optically variable pigments, the light and shade parts can be observed from various angles, the phase-change optically variable anti-counterfeiting element has the obvious characteristic of easy identification, and the characteristic of higher imitation difficulty exists by using customized special equipment.